6 Corrective Maintenance using Status Display Pages Contents ■ Contents 16-1 ■ Status Display Pages 16-3 2130 - Cell Site Status Summary Display Page 16-3 2130 - Procedure to Analyze the 2130 - Cell Site Status Summary Page 16-3 2131 - Cell Equipment Status Display Page 16-5 2131 - Removing Cell Site Units 16-9 2131 - Procedure to Remove a Cell Site Unit 16-10 2131 - Restoring Cell Site Units 16-11 2131 - Procedure to Restore a Cell Site Unit 16-11 2131 - Diagnosing Cell Equipment 16
Corrective Maintenance using Status Display Pages 2133 - Removing/Restoring/Diagnosing Radios & Server Group Antennas 16-22 2134 - Cell DS-1 Unit Status Display Page 16-24 2134 - Removing/Restoring/Diagnosing or Generating a Status Report for DS1/DFI Units 16-26 2134 Procedure to Remove/Restore/Diagnose or Generate a Status Report for DS1 or DFI Unit 16-26 2135 -Cell LC SU /BC Status Display Page 16-27 2135 - Removing/Restoring/ Diagnosing or Generating a Status Report for Locate or Setup Radios
Corrective Maintenance using Status Display Pages Status Display Pages Status display pages are the principle interface between the technician/operator and the Series II cellular system. They allow the technician to view system status, generate status reports, enter commands, and receive system responses.
Corrective Maintenance using Status Display Pages NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< CMD DESCRIPTION s SCREEN s OF 3 2131,c Cell c Equipment Status 2132,c Cell c Software Status 2133,c Cell c VRG Status SERIES 2 ONLY 2133,c,sg,ant VR Status 2134,c Cell c DS-1 Unit Status 2135,c Cell c LC/SU/BC Status 2136,c Cell c LAC Status 2137,c Cell c OTU/LMT Status 2138,c Cell CDMA Equip Status 2139,c,n Cell c CCC n CCU Status 2235,c Cell c DCCH Status 401,c OP:CELL
Corrective Maintenance using Status Display Pages Table 16-1. 2130 - Cell Site Status Summary Page Indicators Summary State (Note) Description uneq Cell Site unequipped in the RC/V ceqcom2 (Series II) form. grow Cell is marked as growth in the RC/V ceqcom2 (Series II) form. init Cell Site transient clear, stable clear, or boot initialization phase.
Corrective Maintenance using Status Display Pages See the following documents for additional information: ■ AUTOPLEX Cellular Telecommunications Systems System 1000 CDMA Spectrum SWAP Base Feature (401-613-001) NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< xttya-cdA MTTY00 mm/dd/yy hh:mm:ss SYS NORM IMS CDN CCS7 CELL LINK OMP+LK MSC DCS TRUNK 2131,C - CELL C EQUIPMENT STATUS PCS TDMA SUMMARY: trbl PHASE LEVEL tc SOURCE cell LOCATION: N.
Corrective Maintenance using Status Display Pages Table 16-2. 2131 - Cell Equipment Status Page Indicators Indicator Description CELL SUMMARY or SUMMARY Indicates the summary state of the Cell Site. The state indicated will also appear on the 2130 - Cell Site Status Summary page. If any CDMA equipment or indicator is alarmed or troubled, the summary state will be trbl. PCS TDMA This indicator is displayed for TDMA PCS cells.
Corrective Maintenance using Status Display Pages Table 16-2. 2131 - Cell Equipment Status Page Indicators (Contd) Indicator Description DS-1 State of DS1 and/or digital facilities interface (DFI) boards: norm (normal—no DS1 or DFI boards are OOS or alarmed); or trbl (one or more DS1 or DFI boards are OOS or alarmed).The DS1 is a plugin circuit board that supports 24 DS0 channels on a T1 trunk facility.
Corrective Maintenance using Status Display Pages Table 16-2. 2131 - Cell Equipment Status Page Indicators (Contd) Indicator Description CAT State of clock and tone (CAT) board or CDMA synchronous clock and tone (SCT) board (0 - 5) (a c or an s displayed next to the number indicates a CAT board or an SCT board, respectively). Boards 4 and 5 can only be SCT boards. Possible states: act; stby; oos (if problem with TDM bus clocking); grow; trbl (if problem with CDMA clocking signals); or uneq.
Corrective Maintenance using Status Display Pages The conditional remove maintenance action changes the state of a maintenance unit from active or standby to out-of-service. It schedules an event or process to place the specified maintenance unit to out-of-service assuming that by doing so does not cause calls to be dropped or service denied to a user.
Corrective Maintenance using Status Display Pages Example: RMV:CELL 1 CSC 0, COMPLETED See the following documents for additional information: 2131 - Restoring Cell Site Units ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Series II Cell Site Description, Operation, and Maintenance (401-660-100) You can use the 2131 - Cell Equipment Status page (See Figure 16-2) to conditionally restore Cell Site unit
Corrective Maintenance using Status Display Pages 2131 - Diagnosing Cell Equipment You can use the 2131 - Cell Equipment Status page (See Figure 16-2) to diagnose specific Cell Site units. The diagnose maintenance action can be applied to a unit in the out-of-service or growth state, to a redundant unit in the standby state, or to a redundant unit in the active state. In the latter case, the cell initiates a switch before executing the diagnose request.
Corrective Maintenance using Status Display Pages 2131 - Procedure to Diagnose Cell Equipment 1. Select ECP Control & Display from the AUTOPLEX(R) System 1000 ECP Access menu. 2. Open the 2131 - Cell Equipment Status page by entering command 2131,c (where c is the Cell Site number). 3. At the CMD< line, To diagnose the... enter... CSC (Cell Site controller) 50 followed by the CSC number (0-1) and press RETURN. DL (data links) press 51 followed by the data link number (0-1) and RETURN.
Corrective Maintenance using Status Display Pages 2131 - Generating Cell Equipment Status Reports You can use the 2131 - Cell Equipment Status page (See Figure 16-2) to generate status output message reports on Cell Sites and Cell Site units. 2131 - Procedure to Generate Cell Equipment Status Reports Select ECP Control & Display from the AUTOPLEX(R) 1. System 1000 ECP Access menu. 2. Open the 2131 - Cell Equipment Status page by entering command 2131,c (where c is the Cell Site number). 3.
Corrective Maintenance using Status Display Pages After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file. The following is an example of a successful output message report.
Corrective Maintenance using Status Display Pages ■ Interrupts ■ Phase monitoring ■ Routine diagnostics ■ Diversity error imbalance output. In addition, this display page has a command to generate a cell status output message report. Inhibiting a Cell Site software process causes the affected cell to send an offnormal alarm to the ECP. (A steady black on white CELL status indicator on the status display pages means that at least one Cell Site in the system is in the inh state.
Corrective Maintenance using Status Display Pages 2131 Procedure to Allow/Inhibit Cell Software Processes 1. Select ECP Control & Display from the AUTOPLEX(R) System 1000 ECP Access menu. 2. Open the 2132 - Cell Software Status page by entering command 2132,c (where c is the Cell Site number). 3. At the CMD< line, To allow/inhibit... enter... audits 701,followed by the name of the audit to allow, or 601,followed by the name of the audit to inhibit and press RETURN.
Corrective Maintenance using Status Display Pages NOTE: This ends the procedure for using the 2132 page to allow/inhibit various Cell Site software processes. Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file. The following is an example of a successful output message report.
Corrective Maintenance using Status Display Pages the RF carrier power level remains fixed for beacon radios, the dual-personality RCU or SBRCU is ineligible for dynamic power control. A TDMA radio (DRU or EDRU) provides a basic modulation efficiency of three user channels per 30-kHz of bandwidth. A 30-kHz channel is subdivided into six timeslots (1 - 6) for TDMA transmissions. Timeslots 1 and 4 form user channel 1, timeslots 2 and 5 form user channel 2, and timeslots 3 and 6 form user channel 3.
Corrective Maintenance using Status Display Pages Table 16-5. 2133 - Series II Cell VR Status Page Radio Maintenance Indicators (Contd) Indicator Description MEM Identity of the trunk member (1 - 1951). The summary state for the trunk member is indicated by its video state: grow (white on magenta): Trunk can be tested, but not used for call processing. idle (white on black): Normal state when not handling calls. busy (black on green): Normal state when in use for call processing.
Corrective Maintenance using Status Display Pages CITY APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< xttya-cdA MTTY00 mm/dd/yy hh:mm:ss ZONE SYS NORM CDN IMS CCS7 CELL OMP+LK LINK MSC DCS TRUNK DCS 2133,52,0,5 PCS TDMA (screen s of 20) Cell CMD s DESCRIPTION SCREEN s of 20 200,r 201,r 202 203 300,r 301,r 302 303 402 500,r 502 RMV RMV RMV RMV RST RST RST RST OP: DGN DGN r r; SG SG r r; SG TG SG r SG UCL ANT ANT UCL UCL ANT MEM ALL ANG ANT RADIO 0 1 2B 3 4 5 6 7 8-
Corrective Maintenance using Status Display Pages . Table 16-6.
Corrective Maintenance using Status Display Pages Conditionally remove a server group antenna 202 and press RETURN. Unconditionally remove an SG antenna 203 and press RETURN. Conditionally restore a radio Unconditionally restore a radio 300, followed by the radio number (0-191) and press RETURN. 301, followed by the radio number (0-191) and press RETURN. Conditionally restore a server group antenna 302 and press RETURN.
Corrective Maintenance using Status Display Pages ■ 2134 - Cell DS-1 Unit Status Display Page AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) The 2134 - Cell DS-1 Unit Status page (See Figure 16-5, and Table 16-7) displays the summary state of the cell DS1 and/or DFI units.
Corrective Maintenance using Status Display Pages NAME SYS EMER OVERLOAD CMD< APX-1000 GENERIC xttya-cdA MTTY00 mm/dd/yy hh:mm:ss CCS7 CRITICAL MAJOR MINOR IMS CELL CDN SYS NORM SYS INH CU CU PERPH LINK MSC DCS TRUNK OMP+LK 2134,c - CELL c DS-1 STATUS UNIT RST RMV DGN OP DS-1xy 3xy 2xy 5xy 4xy CMD 2130 2131,c 490 LEGEND c xy - DESCRIPTION CELL Status Summary CELL c Equipment Status OP:CELL c DS-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 STATE act act act oos act alarm alarm grow grow uneq uneq uneq uneq uneq
Corrective Maintenance using Status Display Pages 2134 - Removing/ Restoring/ Diagnosing or Generating a Status Report for DS1/DFI Units You can use the 2134 - Cell DS-1 Unit Status page (See Figure 16-5, and Table 16-7) to remove, restore, diagnose, or generate a status output message report for DS1/ DFI units. 2134 Procedure to Remove/Restore/Diagnose or Generate a Status Report for DS1 or DFI Unit 1. Select ECP Control & Display from the AUTOPLEX(R)System 1000 ECP Access menu. 2.
Corrective Maintenance using Status Display Pages DGN:CELL 1 DS1 13 COMPLETED ALL TESTS PASSED References: See the following documents for additional information: ■ 2135 -Cell LC SU / BC Status Display Page AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) The 2135 - Cell LC/SU/BC Status page (See Figure 16-6, Figure 16-7 and Table 16-8) displays the summary state of the cell locate, setup, and beacon radios.
Corrective Maintenance using Status Display Pages measurements of signal strengths received from radios at neighboring sites. This latter type of handoff is referred to as mobile-assisted handoff (MAHO). A feature known as the digital verification color code (DVCC) verification feature can ensure a high success rate for the TDMA MAHO procedure. For this feature, there is a digital locate radio (L-DRU) available to each physical antenna face, or sector, neighboring the serving face.
Corrective Maintenance using Status Display Pages NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< UNIT RST LCxy 3xy LCxy ORIG 6xy RMV DGN 2xy 5xy 7xy OP 4xy CMD DESCRIPTION s SCREEN s of 2 2130 CELL Summary 2131,c CELL c HW Stat 490 OP:CELL ??? Beacon Radios 0 1 6 xttya-cdA MTTY00 mm/dd/yy hh:mm:ss SYS NORM IMS CELL CDN CCS7 OMP+LK LINK MSC DCS TRUNK 2135,c - Cell PCS TDMA Locate Radios 0 1 2 3 10 11 12 13 20 30 31 32 33 c LC/SU/BC STATUS 4 14 24 34 5 15 25 35
Corrective Maintenance using Status Display Pages NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< UNIT RST SUxy 3xy SUxy ORIG 6xy RMV 2xy DGN 5xy 7xy OP 4xy CMD DESCRIPTION s SCREEN s of 2 2130 CELL Summary 2131,c CELL c HW Stat 490 OP:CELL ??? Beacon Radios xttya-cdA MTTY00 mm/dd/yy hh:mm:ss SYS NORM IMS CELL CDN CCS7 OMP+LK LINK MSC DCS TRUNK 2135,c - Cell c LC/SU/BC STATUS PCS TDMA Setup Radios 0 1 2 3 4 6 7 8 5 10 11 14 15 16 17 18 20 21 27 28 30 31 32 333434
Corrective Maintenance using Status Display Pages Table 16-8. 2135 - Cell LC/SU/BC Status Page Indicators Indicator Description PCS TDMA This indicator is displayed for TDMA PCS cells. Radio Unit Summary States The summary state for each radio type is indicated by its video display (color) state alone.
Corrective Maintenance using Status Display Pages enter... To... conditionally restore a locate radio conditionally remove a locate radio diagnose a locate radio generate a locate radio status output message report conditionally restore a setup radio conditionally remove a setup radio diagnose a setup radio generate a setup radio status output message report generate a cell status output message report 3 followed by the locate radio number (0-39) and press RETURN.
Corrective Maintenance using Status Display Pages DGN:CELL 1 LC 39 COMPLETED ALL TESTS PASSED References: See the following documents for additional information: ■ 2136 - Cell LAC Status Display Page AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) The 2136 - Cell LAC Status page (See Figure 16-8) displays the summary state of all LACs at the cell. There is also a page command (400) for generating a Cell Site status output message report.
Corrective Maintenance using Status Display Pages The OTU and LMT are basic hardware components of the fiber-link microcell system, which is a low-power RF system that attaches to a host cell such as the Series II Cell Site (often referred to as a macrocell) to provide coverage from perhaps a few hundred feet (60 meters) up to 3,280 feet (1 kilometer) in radius. The fiber-link microcell system can handle any combination of AMPS, TDMA, and CDMA radio equipment simultaneously.
Corrective Maintenance using Status Display Pages NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< 2137,c - DCS c,OTU/LMT STATUS ID OTU LMT TR DESCRIPTION No. Stat. Stat.
Corrective Maintenance using Status Display Pages Table 16-9. 2137 - Cell OTU/LMT Status Page Indicators Indicator Description OTU Stat OTU alarm state: uneq—OTU is unequipped oscil—OTU has a local oscillator malfunction optrx—OTU has an optical receiver malfunction opttx—OTU has an optical transceiver malfunction noscn—OTU alarms cannot be scanned (OTU is insane) norm—OTU is equipped and functioning.
Corrective Maintenance using Status Display Pages CDMA cluster contains 14 CEs, and a fully loaded CDMA radio shelf contains 28 CEs. A CE contains the necessary circuitry to support one CDMA channel. It can be configured as an overhead channel (pilot/sync/access or page) or a traffic (voice) channel. ■ BCR-BIU-ACU (BBA) A baseband combiner and radio (BCR) and its associated bus interface unit (BIU) and analog conversion unit (ACU) form a CDMA radio set—the BBA (for BCR-BIU-ACU).
Corrective Maintenance using Status Display Pages ANYTOWN SYS EMER OVERLOAD CMD< CMD APX-1000 GENERIC xttya-cdA MTTY00 mm/dd/yy hh:mm:ss CST SYS NORM CELLCCS7 CCS7 CRITICAL MAJOR MINOR IMS CELL CDN OMP+LK MSCTRUNK TRUNK SYS INH CU CU PERPH LINK MSC DCS 2138,c - CDMA Equipment STATUS PAGE SUMMARY: trbl trbl CCC OOS PP-W CCC OOS PP-W BBA BBA CHANL PAF DESCRIPTION 200,n 300,n 400,n 500,n 600,c 700,c 2136,c 2139,c,n 2152,d,t RMV:CELL c, CCC n RST:CELL c, CCC n OP:CELL c, CCC n DGN:CELL c, CCC n INH:CELL c,
Corrective Maintenance using Status Display Pages Table 16-10. 2138 - Cell CDMA Equipment Status Page Indicators Indicator Description CCC Identity of CDMA cluster controller (1-30). When the CCC and/or packet pipe (PP) trunk group is removed from service and calls are still active, the status of CCC will be displayed as camp_on so that no new calls are allowed. Once the removal is complete, the status will change to oos.
Corrective Maintenance using Status Display Pages Table 16-10. 2138 - Cell CDMA Equipment Status Page Indicators (Contd) Indicator Description BBA Identity of BBA (combination of BCR-BIU-ACU [baseband combiner/radio, bus interface unit, and analog conversion unit]) unit (1-30).
Corrective Maintenance using Status Display Pages A remove action on a CCC also removes each associated CCU. Any CCU in the CDMA cluster that was in the active state just prior to the removal of the CCC is tagged OOS-POS (out-of-service because parent is out-of-service). A restore actpCUs. Whether the CCC passes or fails the diagnostic test, all units in the CDMA cluster are left in the out-of-service state. NOTE: Use the 2139 - Cell CCC CCU Status page to remove, restore, or diagnose individual CCUs.
Corrective Maintenance using Status Display Pages Inhibit automatic execution of cell routine diagnostics Allow automatic execution of cell routine diagnostics ! 600, followed by the cell number (1-222) and press RETURN. 700, followed by the cell number (1-222) and press RETURN. CAUTION: This option may permit faulty operational or test equipment to remain in service.
Corrective Maintenance using Status Display Pages A CCC and up to seven CCUs form a CDMA cluster. Each CCC terminates the dedicated packet pipe (PP) associated with its CDMA cluster. Each CCU contains two channel elements (CEs); thus, a fully loaded CDMA cluster contains 14 CEs, and a fully loaded CDMA radio shelf contains 28 CEs. A CE contains the necessary circuitry to support one CDMA channel.
Corrective Maintenance using Status Display Pages CITY APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< xttya-cdA MTTY00 mm/dd/yy hh:mm:ss SYS NORM IMS CDN CCS7 CELL MSC LINK OMP+LK DCS TRUNK 2139 - Cell c, CCC n CCU STATUS RMV CCU 2 CCU 3 CCU 4 CCU 5 CCU 6 CCU 7 CCU 1 200,x CCU x SRC=cell 201,x UCL RSN=rmv RST CE STAT PAF STAT PAFSTAT PAFSTAT PAFSTAT PAFSTAT PAFSTAT PAF oos 300,x CCU x 0 psa 1 page 3 idle oos psa 3 grow uneq 301,x UCL 1 busy 3 idle psa 2 oos busy 2 grow u
Corrective Maintenance using Status Display Pages Table 16-11. 2139 - Cell CCC CCU Status Page Indicators Indicator Description CCU Identity of CDMA channel unit (1 - 7) for user-specified CCC. SRC Source of the reported state of the CE(s): man or cell. RSN Reason for the reported state of the CCU(s): campon, dgn (diagnostics), stop (a request [dgn, rmv, etc.
Corrective Maintenance using Status Display Pages Table 16-11. 2139 - Cell CCC CCU Status Page Indicators (Contd) Indicator Description PP TG Member No. Identity of packet pipe trunk group member (1-30). The PP number always matches the CCC number. The individual blocking bits (bfc, bfd, bfm) are highlighted when set: oos (black on red): PP summary state is oos when the bfm (blocked from MSC) bit is set.
Corrective Maintenance using Status Display Pages 2. Open the 2139 - Cell CCC CCU Status page by entering command 2139,c,n (where c is the Cell Site number and n is the CDMA cluster controller number). 3. At the CMD< line, To... enter... Conditionally remove a CCU 200, followed by the CCU number (1-7) and press RETURN. For example: 200,1 and a RETURN conditionally removes CCU 1. Unconditionally remove a CCU 201, followed by the CCU number (1-7) and press RETURN.
Corrective Maintenance using Status Display Pages References: See the following documents for additional information: ■ 2235 - Cell DCCH Status Display Page AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) The 2235 - Cell DCCH Status page (See Figure 16-12, and Table 16-12)displays the summary state of the TDMA digital control channel (DCCH) radios. Maintenance commands are also available on this display page.
Corrective Maintenance using Status Display Pages NAME APX-1000 GENERIC SYS EMER CRITICAL MAJOR MINOR OVERLOAD SYS INH CU CU PERPH CMD< CMD DESCRIPTION 2133,c,r SII VR 2135,c LC/SU/BC 300,r 301,r 400 500,r RST r RST r; UCL OP:CELL c DCCH DGN r xttya-cdA MTTY00 mm/dd/yy hh:mm:ss SYS NORM IMS CDN CCS7 CELL MSC LINK OMP+LK DCS TRUNK 2235,c CELL DCCH STATUS PCS TDMA RADIO PF RADIO PF RADIO PF RADIO PF 0 -1 1 150 -1 6 2 -1 1 162 -1 6 5 -1 1 8 -1 2 10 -1 2 15 -1 2 25 -1 3 32 -1 3 40 -1 3 70 -1 4 85 -1 4 90 -1
Corrective Maintenance using Status Display Pages Table 16-12. 2235 - Series II Cell Site DCCH Status Page Indicator Description PCS TDMA This indicator is displayed for TDMA PCS cells. RADIO Identity of DCCH radio (range 0 - 191; the maximum number of DCCH radios that can be assigned is currently 21—three per sector). Radios are identified as follows: radio_number-user_channel_number.
Corrective Maintenance using Status Display Pages so does not violate maintenance action rules; for example, units are out-of-service or not in the active state). NOTE: This ends the procedure for using the 2235 page to restore, diagnose, or generate a status output message report for DCCH radios. Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file.
Corrective Maintenance using Status Display Pages 3. TDMA Voice Radio OOS Limit Server Group 0. This parameter defines the TDMA Voice Radio Out of Service Limit for Server Group 0. 4. TDMA Voice Radio OOS Limit Server Group 1 This parameter defines the TDMA Voice Radio Out of Service Limit for Server Group. For all 4 translations, the following apply: ■ The view is Per Logical Face. ■ The Allowable Values are 1 to 100% or Blank. ■ The Default is Blank.
17 Corrective Maintenance using ECP Craft Interface Contents ■ Contents 17-1 ■ ECP Craft Shell 17-3 Generating Cell Site Units/Radios/Alarms Status Reports 17-3 Procedure to Generate a Cell Site Unit/Radios/Alarms Status Report 17-3 Removing Cell Site Units 17-4 Procedure to Remove Cell Site Units Restoring Cell Site Units 17-5 17-6 Procedure to Restore Cell Site Units Diagnosing Cell Site Units 17-7 17-8 Procedure to Run Cell Site Unit Diagnostics Stopping Cell Site Unit Diagnostics Proce
Corrective Maintenance using ECP Craft Interface Swapping CDMA Spectrum to/from AMPS/TDMA Procedure to Swap CDMA Spectrum to/from AMPS/TDMA Generating Status Reports of Spectrum Swap of CDMA to/from AMPS/TDMA Procedure to Generate Spectrum Swap Status Reports Running Cell Site Audits 17-15 17-15 17-16 17-16 Diagnosing Cell Site Data Links 17-17 Stopping Cell Site Data Link Diagnostics Procedure to Stop Cell Site Data Link Diagnostics Diagnosing Cell Site Trunks Associated with a Server Group and Antenna
Corrective Maintenance using ECP Craft Interface ECP Craft Shell The ECP Craft Shell is another one of several software interfaces between the technician and the ECP. The same commands that are entered via status display pages may also be entered at the ECP Craft Shell. This section will describe customized commands that can be entered at either the ECP Craft Shell or at the command line at the bottom of a status display page.
Corrective Maintenance using ECP Craft Interface c. Indicates message class override. RUNVMGenerates the status on all radio units currently undergoing NVM updating. NOTE: See the AUTOPLEX Cellular Telecommunications Systems System 1000 Input Messages (401-610-055) for more information about message parameters. Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file.
Corrective Maintenance using ECP Craft Interface place the specified maintenance unit to out-of-service assuming that by doing so does not cause calls to be dropped or service denied to a user. The unconditional remove maintenance action changes the state of a maintenance unit from active or standby to out-of-service with little concern to whether calls are dropped or service denied to a user during the course of command execution.
Corrective Maintenance using ECP Craft Interface a. Indicates the Cell Site number. b. Indicates the Cell Site unit. UCL Indicates unconditional execution. c. Indicates message class override. d. Indicates to remove all busy radios with a specific campon time d (between 0-30 minutes). Only valid for a single Cell Site. INCOMPNVMIndicates to remove all radios with an NVM version that is incompatible with the CSC.Only valid for a single Cell Site.
Corrective Maintenance using ECP Craft Interface The restore maintenance action can be applied to units that are in the out-ofservice, active, or standby state. Except for a unit that is already out-of-service or in the growth state, the first step in a conditional restore maintenance action is the automatic execution of a conditional remove. Therefore, all the restrictions associated with a conditional remove are also associated with a conditional restore.
Corrective Maintenance using ECP Craft Interface NOTE: See the AUTOPLEX Cellular Telecommunications Systems System 1000 Input Messages (401-610-055) for more information about message parameters. Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file. The following is an example of a successful output message report.
Corrective Maintenance using ECP Craft Interface 2. When the connection is established, enter the following command: DGN:CELL a,b[;[RPT c][,RAW][,UCL]] [:[PH d][,TLP][,CHANL e]][ CLASS f] where a. Indicates the Cell Site number. b. Indicates the Cell Site unit. c. Indicates the number of times you want the diagnostic to run. The default value is 1. RAW Indicates printing the diagnostic results of every phase. The default is the first five failures of each failing phase.
Corrective Maintenance using ECP Craft Interface References: See the following documents for additional information: ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ AUTOPLEX System 1000 Virtual System Output Message Routing Optional Feature (401-612-021) NOTE: Feature documents are contained in AUTOPLEX Cellular Telecommunications Systems System 1000 Optional Features (401-900004).
Corrective Maintenance using ECP Craft Interface Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file. The following is an example of a successful output message report.
Corrective Maintenance using ECP Craft Interface where a. Indicates a single Cell Site number. b. Indicates the radio whose functionality you want to move to another radio on the same logical antenna face. UCL Indicates unconditional execution. c. Indicates message class override. NOTE: See the AUTOPLEX Cellular Telecommunications Systems System 1000 Input Messages (401-610-055) for more information about message parameters.
Corrective Maintenance using ECP Craft Interface The CE you specify must be connectable to the same sector as the traffic-serving CE. For a successful handoff: ■ The CDMA call must be in a stable talking state. ■ The destination CE must be connectable to the same sector as the serving CE. ■ The destination CE must be idle. ■ The CDMA call must not be in a 3-way soft handoff. Procedure to Move a CDMA Call to a Specified CE 1. Select ECP Craft Shell from the AUTOPLEX(R) System 1000 ECP Access menu.
Corrective Maintenance using ECP Craft Interface See the following documents for additional information: ■ Swapping CDMA Spectrum to/from AMPS/TDMA AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) You can switch the use of a range of frequencies by the system between either the CDMA technology or analog/TDMA technology.
Corrective Maintenance using ECP Craft Interface Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file. The following is an example of a successful output message report.
Corrective Maintenance using ECP Craft Interface Example: SW:SPECTRUM SWAP CDMA ON, FINISHED ALL CELLS FINISHED SWAP References: See the following documents for additional information: Running Cell Site Audits ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ AUTOPLEX Cellular Telecommunications Systems System 1000 CDMA Spectrum Swap (401-613-001). You can request audits on one or more Cell Sites. Procedure to Audit Cell Sites 1.
Corrective Maintenance using ECP Craft Interface AUD:CELL 10 NAME ARCCC,COMPLETED, ERROR COUNT 4 References: See the following documents for additional information: ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ Cell Site Audits (401-610-078) ■ AUTOPLEX System 1000 Virtual System Output Message Routing Optional Feature (401-612-021) NOTE: Feature documents are contained in AUTOPLEX Cellular Telecommunications Systems System 1000 Optional Features (401-900004)
Corrective Maintenance using ECP Craft Interface where a. Indicates the Cell Site number. b. Data link number. c. Indicates the diagnostic test type. ERR Dumps the protocol error registers at the conclusion of the loopback test. d. Indicates the number of times you want the test repeated. UCL Indicates an unconditional execution of the diagnostic with no early termination and printing all failures (conditional stops on first failure). e. Indicates message class override.
Corrective Maintenance using ECP Craft Interface Stopping Cell Site Data Link Diagnostics You can stop diagnostics on Cell Site data links. Procedure to Stop Cell Site Data Link Diagnostics 1. Select ECP Craft Shell from the AUTOPLEX(R) System 1000 ECP Access menu. 2. When the connection is established, enter the following command: STOP:DGN;CELL a,DL b [ CLASS c] where a. Indicates the Cell Site number. b. Indicates the Cell Site data link number. c. Indicates message class override.
Corrective Maintenance using ECP Craft Interface NOTE: Feature documents are contained in AUTOPLEX Cellular Telecommunications Systems System 1000 Optional Features (401-900004). Diagnosing Cell Site Trunks Associated with a Server Group and Antenna Face (Non-CDMA) You can diagnose Cell Site trunks that are associated with a cell, server group, and antenna face. Procedure to Diagnose a Cell Site Trunk Server Group and Antenna Face 1.
Corrective Maintenance using ECP Craft Interface DGN:CELL 1 SG 0 ANT 6, COMPLETED References: See the following documents for additional information: ■ Stopping Diagnostics on Cell Site Trunks Associated with a Server Group and Antenna Face AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) You can stop Cell Site trunk diagnostics associated with a specific cell, server group, and antenna face.
Corrective Maintenance using ECP Craft Interface ■ Requesting Cell Site Data Link NVM Updates AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) You can request a non-volatile memory (NVM) update for Cell Site data link optioning fields. NOTE: The download command works only with an off-line Cell Site controller (CSC). Procedure to Update Cell Site NVM 1. Select ECP Craft Shell from the AUTOPLEX(R) System 1000 ECP Access menu. 2.
Corrective Maintenance using ECP Craft Interface DNLD:CELL 2 DLOPTS COMPLETED References: See the following documents for additional information: ■ Requesting Cell Site Hardware Unit NVM Updates AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057). You can request a non-volatile memory (NVM) update for Cell Site units. Procedure to Request Cell Cite Hardware Unit NVM Updates 1. Select ECP Craft Shell from the AUTOPLEX(R) System 1000 ECP Access menu. 2.
Corrective Maintenance using ECP Craft Interface See the following documents for additional information: ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ AUTOPLEX System 1000 Virtual System Output Message Routing Optional Feature (401-612-021) NOTE: Feature documents are contained in AUTOPLEX Cellular Telecommunications Systems System 1000 Optional Features (401-900004).
Corrective Maintenance using ECP Craft Interface INIT:CELL a:BOOT[IE];SW NOTE: This command format switches the standby (STBY) radio control complex to the active (ACT) controller after the boot. The non-active controller can be in the STBY or OOS state before you request the switch. where a. Indicates the Cell Site number. b. Indicates the system process you want to purge (SPP). TC Indicates a transient clear, phase 3.
Corrective Maintenance using ECP Craft Interface See the following documents for additional information: ■ AUTOPLEX Cellular Telecommunications Systems System 1000 Output Messages (401-610-057) ■ AUTOPLEX Cellular Telecommunications Systems System 1000 System Recovery (401-610-079) ■ AUTOPLEX System 1000 Virtual System Output Message Routing Optional Feature (401-612-021) NOTE: Feature documents are contained in AUTOPLEX Cellular Telecommunications Systems System 1000 Optional Features (401-900004).
Corrective Maintenance using ECP Craft Interface Procedure to Initialize, Set Up, or Use OCNS at a CDMA Cell Site 1. Select ECP Craft Shell from the AUTOPLEX(R) System 1000 ECP Access menu 2.
Corrective Maintenance using ECP Craft Interface f. Indicates the interval number of 30 second increments for periodic clipping of OCNS reports from the cell. NOTE: See the AUTOPLEX Cellular Telecommunications Systems System 1000 Input Messages (401-610-055) for more information about message parameters. Result: After the system processes the command, an output message report scrolls up from the bottom of the window. In addition, the output message report is sent to a log file.
Corrective Maintenance using ECP Craft Interface The Maintenance request Administrator Info (MRAINFO) & Technician Interface Info (TIINFO) Fields The Maintenance Request Administrator (MRA) and other Radio Cluster Server (RCS) maintenance software, use a field called MRAINFO to specify reason codes and to pass them to other processes within the Radio Control Cluster (RCS) and external to it.
Lucent Technologies — Proprietary See notice on first page 17-30 401-660-100 Issue 11 August 2000
18 Alarm Collection and Reporting Contents ■ Contents 18-1 ■ Introduction 18-3 Equipment Alarms 18-4 Alarm Status Registers and Scan Points 18-5 Alarm Reporting to the ECP 18-6 Cell Site Alarm Circuits 18-13 User-Defined Alarms ■ 18-14 Increased Cell Alarms Enhancement 18-16 New Hardware for the Increased Cell Alarms Enhancement 18-17 New Translations for the Increased Cell Alarms Enhancement 18-18 Support Documentation for the Increased Cell Alarms Enhancement Directional Setup ■ 1
Alarm Collection and Reporting Dynamically Populated Amplifier Alarm Table MSC Functions Amplifier Alarm Reporting/Query 401-660-100 Issue 11 18-24 18-24 CDMA Transmit Unit (CTU) and Receive Unit (RU) Separate Alarms 18-27 Performance & Capacity 18-29 Lucent Technologies — Proprietary See notice on first page 18-2 18-23 August 2000
Alarm Collection and Reporting Introduction The alarm and FITS interface (AFI) units (See Figure 18-1), which are part of the RCC (shelf 0) in the primary RCF, monitor both equipment and user-defined alarms. Equipment alarms are gathered from alarm sensors within the AIFs, LAFs, primary RCF, and growth RCFs, while user-defined alarms are gathered from alarm sensors external to the Cell Site equipment. The alarm inputs to the two AFIs are connected in parallel through the backplane of the RCC.
Alarm Collection and Reporting alarm signals route through the backplane to both the active and standby AFIs, but only the alarms monitored by the active AFI are scanned for alarm conditions. J110 PRIMARY RCF—RCF 0 (REAR VIEW) SHELF 0 AYD5 PADDLEBOARD AFIs Figure 18-1.
Alarm Collection and Reporting The AFI monitors six PCU alarms and six fan alarms in the primary RCF (18 PCU alarms and 18 fan alarms if both growth RCFs are connected). Each of the alarms connects to the AFI through one signal line and a common ground return (see “C” and “D” in Figure 18-4, Sheet 2). The “no alarm” state of a PCU or fan alarm is an open (logic 1) between the associated line and the ground return.
Alarm Collection and Reporting Alarm Reporting to the ECP The AFI scans the alarm inputs every two seconds to update its alarm memory. When the AFI detects an alarm condition, it sets a flag in the alarm memory. The CPU, which scans the alarm memory every four seconds, reads the flag and responds by transmitting the alarm condition via an X.25 signaling channel to the ECP. The CPU reports an alarm condition only once to the ECP, at the time that the CPU initially senses the alarm.
Alarm Collection and Reporting ADDR (9) ADDR (9) ADDR (14) 6 3 IEEE-488 CONNECTOR 16 IEEE-488 INTErfACE HARDWARE ALARM MEMORY ADDRESS LATCH EPROM 6 5 RED LED (FAILURE) 2 2 DATA (8) 2 DATA (8) 3 5 (15) ADDRESS DECODE AND CONTROL 2 4 2 12 DATA (8) DATA BUFFER 8-BIT MICROPROCESSOR LAC ALARMS (7) EIA-422A SCAN CONTROL 8 USER-DEF ALARMS (18) + EQUIPMENT ALARMS (5)* +12 VDC LINES (18) OPTO24 ISOLATOR OPTO1 ISOLATOR +12 VDC REGULATOR 24 1 +24 VDC 64 EQUIPMENT ALARMS (36) 6 3 1
Alarm Collection and Reporting P/O AFI RCG +5 VDC OPTO-ISOLATOR (LOGIC 0) A RCG ALARM DEVICE +12 VDC PREAMP SRC 0 +5 VDC OPTO-ISOLATOR (LOGIC 1) B PREAMP ALARM DEVICES +12 VDC PREAMP SRC 1 +12 VDC REF GEN 0 +12 VDC REF GEN 1 SCAN CONTROL +5 VDC OPTO-ISOLATOR (LOGIC 0) E +12 VDC REF GEN SELECT SCAN CONTROL +5 VDC OPTO-ISOLATOR (LOGIC 0) D RFG STATUS DEVICE SCAN CONTROL +5 VDC OPTO-ISOLATOR (LOGIC 1) C RFG ALARM DEVICES SCAN CONTROL SCAN CONTROL +5 VDC OPTO-ISOLATOR (LOGIC 1) F +1
Alarm Collection and Reporting P/O PRIMARY RCF—RCF0 J110 RCC BACKPLANE W50 J2 AYD5 J1 P1 AFI (SIDE 0) ALARM SIG IN USER DEFINED ALARMS (18) +12 VDC OUT AND GRD RCG ALARM (1) ALARMS (2) PREAMP AIF ALARMS & STATUS (6) REF GEN ALARMS (2) REF0/REF1 STATUS (1) J104 LAF ALARMS (UP TO 7) P/O W51 RCF0 PCU & FAN ALARMS (12) J105 PROCPWRL P/O W51 PCU & FAN ALARMS RCF1 ALARMS (12) J106 RCF2 ALARMS (12) J3 LAC ALARMS (EIA-422A) W55 PCU & FAN ALARMS NOTE: P1 = EQUIPMENT LOCATION (EQL) 022.
Alarm Collection and Reporting ALARM DEVICE “1” USR-DEF ALARM DEVICES P/O AFI +5 VDC OPTO-ISOLATOR(LOGIC 0) A +12 VDC ALARM DEVICE “2” ALARM DEVICE “3” SCAN CONTROL (LOGIC 1, (NO ALM) POLARITY, LOGIC 1 (SEE NOTE) +5 VDC (LOGIC 1, NO ALM) (LOGIC 1) C FAN ALARM DEVICE POLARITY, LOGIC 1 (SEE NOTE) +5 VDC OPTO-ISOLATOR(LOGIC 0) B +12 VDC PCU ALARM DEVICE SCAN CONTROL (LOGIC 1, ALARM (NO ALM)MEMORY SCAN CONTROL ALARM DEVICE “4” POLARITY, LOGIC 0 (SEE NOTE) +5 VDC (LOGIC 1, NO ALM) (LOGIC
Alarm Collection and Reporting P/O PRIMARY RCF—RCF0 RCC BACKPLANE J2 12 ADDITIONAL USER-DEFINED ALARMS (18 - 29) 12 ADDITIONAL EQUIPMENT ALARMS AAI ALARM SIG IN (NEGATIVE) AFI (SIDE 0) J1 +12 VDC OUT (POSITIVE) 12 TTL SIGNAL LINES P1 AFI (SIDE 1) ALARM SIG IN (NEGATIVE) 12 TTL SIGNAL LINES +12 VDC OUT (POSITIVE) P20 +12 VDC +12 VDC REG P1 +24 VDC +5 VDC * +5 VDC +24 VDC NOTE: P1 = EQUIPMENT LOCATION (EQL) 022, P20 = EQL 154, AND * = EQL 172. Figure 18-6.
Alarm Collection and Reporting P/O PRIMARY RCF—RCF0 RCC BACKPLANE J3 24 POSITIVE TERMINALS +12 VDC OUT (POSITIVE) 24 NEGATIVE TERMINALS ALARM SIG IN (NEGATIVE) AAI AFI (SIDE 0) J1 P1 12 TTL SIGNAL LINES J4 AFI (SIDE 1) P20 12 TTL SIGNAL LINES J5 CIRCUIT GROUND (COMMON) 24 COMMON TERMINALS +12 VDC +12 VDC REG P20 +24 VDC +5 VDC * +5 VDC +24 VDC NOTE: P1 = EQUIPMENT LOCATION (EQL) 022, P20 = EQL 154, AND * = EQL 172. Figure 18-7.
Alarm Collection and Reporting Cell Site Alarm Circuits Cell Site alarm circuits are monitored by the AFI circuit boards on the RCC shelf. Each side of the RCC has one AFI board. The alarm inputs to the two boards are connected in parallel. The Core Processor reports the status of each alarm to the MSC by a data channel.
Alarm Collection and Reporting ■ Five alarms from the Antenna Interface Frame (AIF) ■ Twelve alarms from each Radio Channel Frame (RCF) ■ Alarms from the linear Amplifier Frames (LAFs) by an EIA-422 data link. All of the alarms are connected to the Alarm/FITS Interface (AFI) board by an AYD5 adapter board. On the AFI board, the interface for each of the user alarms and the AIF alarms is an opto-isolator with some protective input resistance.
Alarm Collection and Reporting There are two translations associated with each user-defined alarm: an equipage translation used to enable the alarm and a polarity translation used to invert (if need be) the logic state of the alarm signal. The “no alarm” state for an alarm is with current flowing (see “A” and “B” in Figure 18-4, Sheet 2), which also provides a means for detecting a break in a line pair.
Alarm Collection and Reporting Increased Cell Alarms Enhancement An Increased Cell Alarms enhancement to the User-Defined Cell Site Alarms (UDA) optional feature is available in ECP Release 7.0, which will provide an additional 12 user-defined alarms and 12 equipment alarms for use in the cell.* Unlike other equipment alarms (which are permanently assigned), the additional 12 equipment alarms are assigned by the cell based on the Cell Site equipment configuration.
Alarm Collection and Reporting The equipment alarm input assignments for the RCF0, RCF1, RCF2, AIF, and LAF will not change from the assignments made prior to ECP Release 7.0. New Hardware for the Increased Cell Alarms Enhancement The Increased Cell Alarms enhancement requires a new hardware kit for existing Series II Cell Site equipment. The kit consists of an alarm adapter interface (AAI) AYD10 board, mounting hardware, cabling, and connectors.
Alarm Collection and Reporting Adjunct equipment at the Cell Site must be connected to the AAI according to the installation instructions to ensure proper alarm assignment. New Translations for the Increased Cell Alarms Enhancement While the cell can identify equipage of the CDMA adjunct via the translations data base, it cannot identify equipage of the CDPD or Battery adjunct.
Alarm Collection and Reporting base station and neighbor base station location measurements decreases message traffic associated with digital mobile transceivers and accelerates the handoff process. Received Radio Frequency (RF) signals are fed from the receiving antennas to the Antenna Interface Frame (AIF) where they are filtered, amplified, and divided for distribution to the Radio Frame Set (RFS). See Figure 18-8.
Alarm Collection and Reporting ANT "0" (OMNI) DIV 0/1 RX SIG IN ANT "1" (ALPHA) DIV 0/1 RX SIG IN P/O INTERCONN ASSEM 1:9 RF PWR DVDR DIV 0/1 RF RCVR AMPL/4X12 SWITCH/CMBR BOARD 1:12 RF PWR DVDR OMNI ALPHA BETA GAMMA SW-0 SW-1 SW-11 ANT "5" (EPSILON) DIV 0/1 RX SIG IN 1:9 RF PWR DVDR 1:12 RF PWR DVDR OMNI DELTA EPSILON ZETA SW-0 SW-1 RX RF SIG SW-11 RCU 0 RX RF SIG SW CONT SIG P/O INTERCONNECTION ASSEMBLY RCU 11 SHELF "2" (RCU SWITCHABLE SHELF) SW CONT SIG ANT "6" (ZETA) DIV 0/1 RX S
Alarm Collection and Reporting Alarm Scanning Redesign Introduction Until recently, the amplifier Alarm Scanning (AS) software functioned as follows: The Cell Site was presumed to have only one type of amplifier. This amplifier type was hard-coded into an amplifier alarm table that was created specifically for that particular type of amplifier. Within that table each type of alarm pertaining to that specific amplifier was hard-coded and pre-defined.
Alarm Collection and Reporting Previously, Alarm Scanning (AS) software for alarms at the Cell Site and the Mobile Switching Center used hard-coded tables to assign not only the Alarm and FITS Interface (AFI) alarm addresses, but the alarm text string for each internal device unit (e.g.
Alarm Collection and Reporting ■ Allows the reuse, or reassignment, of existing amplifier alarm states (4-bit alarm data representations) and their alarm descriptions (alarm text) to a different amplifier/type with minimum effort. ■ Allows all amplifier related alarm reports (alarm office summary report, amplifier alarm query response, and spontaneous alarm scan report) to be synchronized with consistent amplifier unit number, amplifier name, and alarm text string for the same alarm status.
Alarm Collection and Reporting As it is populated on a per amplifier alarm address basis, any amplifier unit with a supported amplifier type is assignable to any amplifier address. The dynamically populated table allows the amplifier unit to configure itself. NOTE: For the TDMA, Series II CDMA and AMPS cells, the system uses the existing hardcoded amplifier alarm table for alarm processing.
Alarm Collection and Reporting amplifier unit 0 was at the alarm state, he/she had to query the amplifier alarm status of this alarmed amplifier by entering the amplifier alarm address 29 in the OP:CELL-LAC alarm input command. This inflexibility of the user interface has been corrected by defining a logical amplifier unit number for each amplifier unit associated with an amplifier alarm address and providing the logical amplifier unit number to the physical amplifier unit mapping.
Alarm Collection and Reporting Six alarm states are supported for the PCS CDMA MiniCell: 0 - None 1 - CDMA Transmit Unit (CTU) failure-critical alarm, 2 - Single Receive Unit (RU) failure-major alarm 3 - CTU and single RU failure-critical alarm 4 - Both RU failure-critical alarm 5 - CTU and double RU failure-critical alarm. The content of the interface message is not changed, except the alarm text string to be replaced by the amplifier alarm state.
Alarm Collection and Reporting The basic alarm state (on or off) per alarm unit on the SDP 2136 page is supported for amplifier units of a new amplifier type reusing an existing amplifier alarm state (4-bit alarm data representations). The MSC also sends to the cell site the logical amplifier unit number (0-31) for the individual amplifier OP query request from the technician. A new AU option for the OP:CELL command is allowed to query the alarm status of non-LAC type amplifiers.
Alarm Collection and Reporting ■ RU down converter synthesizer out-of-lock. If either of these alarm conditions occur, the RCC is informed. For the PCS CDMA Minicell, the receiver unit alarm was reported as part of the CTU transmit amplifier status message. Any failure occurring on both diversity receive units would result in a critical alarm. Currently, RU and CTU alarms are accurately reported at the ROP, but incorrectly reported in the "OP:ALARM,ALL" or "OP:CELL-LAC" input command response.
Alarm Collection and Reporting Upon the single CDMA transmit unit or double receive diversity (DRD) alarm/ failure, the traffic from CCCs/CCUs toward the affected antenna is blocked from sector with a reason of "ctu" or "drd" in the 2139 page. Two BFS reasons, ctu and drd, to indicate the single CTU or double RU alarms for the OP:CELL-CCC report is provided. NOTE: A pair of receive diversities serves one sector for all carriers to determine which RU causes a single receive diversity alarm.
Lucent Technologies — Proprietary See notice on first page 18-30 401-660-100 Issue 11 August 2000
19 Cell Site Hardware LED Descriptions Contents ■ Contents 19-1 ■ LED Descriptions Table 19-2 Lucent Technologies — Proprietary See notice on first page 401-660-100 Issue 11 August 2000 19-1
Cell Site Hardware LED Descriptions LED Descriptions Table Most of the Cell Site hardware units have one or more LEDs that continually provide information on the current operating conditions of the units. A technician at an on-site location can observe the LEDs to identify faulty hardware units. Except for the linear amplifier circuits in the LAF and the channel service units in the FIF, the LEDs for the various Cell Site hardware units are listed and described in Figure 19-1.
Cell Site Hardware LED Descriptions Table 19-1. Cell Site Hardware Status Indicators (Contd) Hardware Unit Hardware Type Gen AMPS TDMA CDMA LED Description CPI x Red Lighted momentarily during the self-test initiated upon powerup or after a system reset and is off after successful completion of the self-test; lighted during normal operation if software detects a CPI failure or the CPI is insane.
Cell Site Hardware LED Descriptions Table 19-1. Cell Site Hardware Status Indicators (Contd) Hardware Unit Hardware Type Gen AMPS TDMA CDMA LED Description DFI x Lighted during the self-test initiated upon powerup or after a reset and goes off after successful completion of the self-test; lighted during normal operation if the DFI is insane.
Cell Site Hardware LED Descriptions Table 19-1. Hardware Unit RCU, SBRCU Cell Site Hardware Status Indicators (Contd) Hardware Type Gen AMPS TDMA CDMA LED x Red Description Lighted during the self-test initiated upon powerup or after a reset and goes off after successful completion of the self-test; lighted during normal operation if the RCU/ SBRCU has a board error or is insane. Yellow Lighted during non-volatile memory (NVM) update. RTU x Green Lighted when the RCU/ SBRCU is transmitting.
Cell Site Hardware LED Descriptions Table 19-1. Hardware Unit Cell Site Hardware Status Indicators (Contd) Hardware Type Gen AMPS TDMA CDMA LED PCU (415AA) +5 Vdc PCU (419AA) ±12 Vdc DRU, EDRU x x x x x Description Red Indicates one of the following alarms: low input voltage shutdown alarm (non-latched shutdown), high output voltage shutdown alarm (latched shutdown), over-current shutdown alarm (latched shutdown) or low output voltage alarm (no shutdown).
Cell Site Hardware LED Descriptions Table 19-1. Hardware Unit PCU (415AC) +5 Vdc CCC Cell Site Hardware Status Indicators (Contd) Hardware Type Gen AMPS TDMA CDMA LED x x Description Red Indicates one of the following alarms: low input voltage shutdown alarm (non-latched shutdown), high output voltage shutdown alarm (latched shutdown), over-current shutdown alarm (latched shutdown) or low output voltage alarm (no shutdown). Green Indicates the presence of input voltage (+24 Vdc nominal).
Cell Site Hardware LED Descriptions Table 19-1. Hardware Unit Cell Site Hardware Status Indicators (Contd) Hardware Type Gen AMPS TDMA CDMA LED ACU x x BCR x SCT Description Red Lighted during the self-test initiated upon powerup or after a reset and goes off after successful completion of the self-test; lighted during normal operation if the ACU has a board error. Green Lighted when the ACU is supplying reverse path data to the shelf RXDATA bus.
Cell Site Hardware LED Descriptions Table 19-1. Hardware Unit CRTUi Cell Site Hardware Status Indicators (Contd) Hardware Type Gen AMPS TDMA CDMA LED x Red Description Lighted during the self-test initiated upon powerup or after a reset and goes off after successful completion of the self-test; lighted during normal operation if the CRTUi has a board error or is insane. Yellow Lighted during NVM update. RFTG x Green Lighted when a CDMA functional test is executing.
Lucent Technologies — Proprietary See notice on first page 19-10 401-660-100 Issue 11 August 2000
20 AMapping Status Display Page Unit Numbers to Hardware Contents ■ Contents 20-1 ■ Introduction 20-2 Logical-to-Physical Mappings of Generic Cell Site Units 20-2 Logical-to-Physical Mappings of CDMA-Specific Cell Site Units 20-8 Lucent Technologies — Proprietary See notice on first page 401-660-100 Issue 11 August 2000 20-1
AMapping Status Display Page Unit Numbers to Hardware Introduction This section shows how logical unit numbers on the ECP status display pages map to their physical counterparts in the Series II Cell Site. For example, logical unit DS1 0 on the 2134 - Cell DS-1 Unit Status page maps to a DS1 or DFI hardware unit seated in shelf 3, slot 12, of the primary RCF.
AMapping Status Display Page Unit Numbers to Hardware Although the DFI has two physical facility ports, only a single facility port is currently supported. The mappings in Figure 20-1 shows how the CAT logical unit numbers on the status display pages map to their physical counterparts in a partially and fully equipped, non-CDMA, Series II Cell Site. The range for CAT logical numbers in a non-CDMA Cell Site is 0 through 3.
AMapping Status Display Page Unit Numbers to Hardware FRONT VIEW OF PRIMARY RCF—RCF0 SLOT NUM CSC MAPPING 0 SHELF 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A F I G R O W T H C P U C P U (SEE NOTE) G R O W T H G R O W T H G C N M R P C E O I I M W 0 T H M N C G E C P R M I I O 0 W T H 0 RC/V UNIT NUM SLOT NUM N C I 1 0 1 2 3 4 N C I 1 G R O W T H G R O W T H G R O W T H A F I 1 5 6 7 8 9 10 11 12 13 14 15 16 17 C A T SHELF 1 CAT MAPPING 0 RC/V UNIT N
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF1 AMPS/TDMA RCF0 AMPS/TDMA RCF2 TDM0 SHELF 0 TDM1 SHELF 1 SHELF 2 FANS SHELF 3 0 SHELF 4 1 SHELF 5 TDM1 = DS1 OR DFI Figure 20-2.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 AMPS/TDMA RCF1 TDM0 SHELF 0 TDM1 SHELF 1 0 SHELF 2 1 FANS SHELF 3 SHELF 4 SHELF 5 = CAT = POPULATED AMPS/TDMA RCF1 SHELF Figure 20-3.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 AMPS/TDMA RCF1 TDM0 SHELF 0 TDM1 SHELF 1 0 SHELF 2 1 FANS SHELF 3 SHELF 4 2 SHELF 5 3 = CAT = POPULATED AMPS/TDMA RCF1 SHELF Figure 20-4.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 AMPS/TDMA RCF2 AMPS/TDMA RCF1 TDM0 TDM1 SHELF 0 SHELF 1 0 SHELF 2 1 FANS SHELF 3 SHELF 4 2 SHELF 5 3 TDM1 = CAT Figure 20-5. Logical-to-Physical Unit Mapping for the CAT (Sheet 3 of 3) Logical-to-Physical Mappings of CDMA-Specific Cell Site Units The mappings in Figure 20-6 and Figure 20-8 show how the CDMA logical unit numbers on the status display pages map to their physical counterparts in the Series II Cell Site.
AMapping Status Display Page Unit Numbers to Hardware The “DS1” logical numbers associated with the DFI units in Figure 20-10— denoted by an asterisk (*)—are suggested values. The user could associated other “DS1’ logical numbers with those DFIs, but the DFIs must be physically located as shown in the Figure 20-10. DFIs are required for CDMA operation. (Slot 24 of shelves 2 and 3 of the CDMA growth frame is reserved for the DFI.) The range for CAT logical numbers in a CDMA Cell Site is 0 through 5.
AMapping Status Display Page Unit Numbers to Hardware FRONT VIEW OF CDMA RCF1 Slot Num 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 C C U 7 Shelf 0 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 7 RC/V Unit Num Slot Num 1 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 1 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 C C C C U C 1 24 25 24 25 24 25 24 25 24 25 24 25 C C U 7 8 C C C C C C C C C U U U 1 2 3 C U C 4 C C U
AMapping Status Display Page Unit Numbers to Hardware FRONT VIEW OF CDMA RCF2 Slot Num 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C C U 7 Shelf 0 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 1 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 1 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 1 2 C C U 6 C C U 5 C C U 4 C C U 3 C C U 2 RC/V Unit Num 1 2 C U C 4 C C U 5 C C U 6 25 C C U 7 C C C C U C 1 C C C C C C C C C U U U 1 2 3 C U C 4 C C U 5 C C U 6 25 C C U
AMapping Status Display Page Unit Numbers to Hardware FRONT VIEW OF CDMA RCF1 Slot Num 1 Shelf 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 B C R A B C I U U 7 RC/V Unit Num Slot Num 1 Shelf 1 Shelf 2 BBA MAPPING 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C I U U 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C I U U 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A B C I U U Shelf 5 RC/V Unit Num B A I C U U
AMapping Status Display Page Unit Numbers to Hardware FRONT VIEW OF CDMA RCF2 Slot Num 1 Shelf 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 B C R A B C I U U 19 RC/V Unit Num Slot Num 1 Shelf 1 Shelf 2 BBA MAPPING B C R A B C I U U Slot Num 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 A B C I U U 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 A B C I U U Shelf 5 RC/V UNIT NUM B A I C U U 25 24 25 24 25 24 25 B C R 26 2 3 4 5 6 7 8 9
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 CDMA RCF1 TDM0 Shelf 0 4 Shelf 1 0 5 Shelf 2 1 3* SCT Units Configured For GPS Timing Only Fans Shelf 3 0 Shelf 4 1 Shelf 5 2* = DS1 or DFI = DFI = SCT = CAT = Populated CDMA Shelf Figure 20-10.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 CDMA RCF1 TDM0 TDM1 Shelf 0 4* Shelf 1 0 5 Shelf 2 1 2* Shelf 3 0 3* Shelf 4 1 2 4 SCT Units Configured For GPS Timing Only Fans Shelf 5 = DS1 or DFI 3 = DFI = SCT = CAT = Populated CDMA Shelf Figure 20-11.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 CDMA RCF2 CDMA RCF1 Shelf 0 TDM0 5 *TDM1 Shelf 1 Shelf 2 4 2 0 SCT Units Configured For GPS Timing Only 5 SCT Units Configured For GPS & TDM Bus Timing 3 1 3* 6* Shelf 3 0 4* Shelf 4 1 Shelf 5 2* Fans = DS1 or DFI = DFI TDM1 = SCT = CAT = Populated CDMA Shelf Figure 20-12.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 CDMA RCF2 CDMA RCF1 Shelf 0 TDM0 5 *TDM1 Shelf 1 Shelf 2 4 2 0 SCT Units Configured For GPS Timing Only 5 SCT Units Configured For GPS & TDM Bus Timing 3 1 3* 6* Shelf 3 0 4* 7* Shelf 4 1 Shelf 5 2* Fans = DS1 or DFI = DFI TDM1 = SCT = CAT = Populated CDMA Shelf Figure 20-13.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 CDMA RCF2 AMPS/TDMA RCF1 Shelf 0 TDM0 5 * TDM1 3* Shelf 1 0 4* Shelf 2 1 SCT Units Configured For GPS & TDM Bus Timing 3 2 6* Fans Shelf 3 0 Shelf 4 1 Shelf 5 2* = DS1 or DFI = DFI TDM1 = SCT = CAT = Populated CDMA Shelf Figure 20-14.
AMapping Status Display Page Unit Numbers to Hardware AMPS/TDMA RCF0 AMPS/TDMA RCF1 CDMA RCF2 Shelf 0 TDM0 5 *TDM1 3* Shelf 1 0 4* Shelf 2 1 6* Shelf 3 0 7* Shelf 4 1 Shelf 5 2* SCT Units Configured For GPS & TDM Bus Timing 3 2 Fans = DS1 or DFI = DFI TDM1 = SCT = CAT = Populated CDMA Shelf Figure 20-15.
Lucent Technologies — Proprietary See notice on first page 20-20 401-660-100 Issue 11 August 2000
21 CDMA Maintenance Contents ■ Contents 21-1 ■ Introduction 21-3 CRTU and CDMA Functional Testing 21-3 CRTU Components 21-4 RC/V Form Changes to Support the CRTU 21-6 Executive Cellular Processor Form 21-7 Cell Equipage Common Form 21-8 Subscriber and Feature Information Form 21-8 Cell Equipage Component Location Form 21-9 2132 - Cell Software Status Display Page 21-10 ■ Command and Report Changes to Support the CRTU 21-12 ■ CRTU Growth Procedures 21-14 CDMA Functional Tests 2
CDMA Maintenance General Errors 21-25 Overhead Channel Functional Test Errors 21-25 Lucent Technologies — Proprietary See notice on first page 21-2 401-660-100 Issue 11 August 2000
CDMA Maintenance Introduction This section describes the code division multiple access (CDMA) system as implemented in the Series II platform and presents trouble-clearing procedures to correct faults pertaining to CDMA Cell Site hardware units. It also presents cursory trouble-clearing procedures to correct faults pertaining to CDMA voiceprocessing hardware units at the 5ESS®-2000 Switch DCS.
CDMA Maintenance TO/FROM PSTN SERIES II Cell Site MSC 5ESS®-2000 SWITCH DCS TDM BUS RCC T1 LINES T1 LINES DIGITAL TIME SLOT DIGITAL DIGITAL FACILITIES INTERCHANGE FACILITIES TRUNK UNIT INTErfACE UNIT INTErfACE MOST TONE GENERATOR PCM PACKET PIPE PROTOCOL HANDLER FOR VOICE FRAME RELAY PROTOCOL HANDLER CRTUi TDM BUS DFI CRTUm TX ANT RF RX ANTs DIV0DIV1 AMPS LAC & AIF CDMA RSP CDMA PATH SERIES II Cell Site TDM BUS RCC ECP COMPLEX DFI OMP CRTUi TDM BUS CRTUm TX ANT RF RX ANTs DIV0DIV
CDMA Maintenance The CRTUi communicates with the CRTUm through an EIA-422 asynchronous data link. It is over this data link that the CRTUi, under the direction of the RCC, instructs the CRTUm to perform individual CDMA functional tests, and over which the CRTUi and RCC collect the test results. Included with the four-wire EIA-422 data link are two control leads. One control lead allows the CRTUi or RCC to turn off the CRTUm by disabling power to the CRTUm. The other control lead is reserved for future use.
CDMA Maintenance RC/V Form Changes to Support the CRTU Certain fields and parameters have been added to the following recent change and verify (RC/V) forms to support the CRTU: ■ Executive Cellular Processor form (ecp) ■ Series II Cell Equipage Common form (ceqcom2) ■ Subscriber and Feature Information form (sub) ■ Cell Equipage Component Location form (ceqcloc).
CDMA Maintenance Executive Cellular Processor Form The ecp form contains the ECP information used to process calls, make service measurements, and provide automatic message accounting (AMA) information. The values specified here will be used for each cell served by this ECP unless other values are specified on an individual cell basis using the RC/V cell forms, such as ceqcom2. The values on the RC/V cell forms for an individual cell take precedence over the ECP values.
CDMA Maintenance Cell Equipage Common Form The ceqcom2 form contains information concerning Cell Site equipment configuration, status, and maintenance-related parameters for an individual Series II cell. The values on the ceqcom2 form take precedence over the values on the ecp form. The following new fields have been added to the “Radio Test Unit” screen of the ceqcom2 form: ■ CDMA RTU - Status—Used to equip a CRTU at a Series II cell.
CDMA Maintenance each type has a unique Mobile Directory Number Type value (y, b)* designated via the sub form. Both types of CDMA MOST calls use the same special directory number specified in the Traffic Path Functional Test MOST DN field of the ecp form. Cell Equipage Component Location Form The ceqcloc form is a review-only form containing information about how Series II cells are equipped. It contains the physical layout information for each slot on each shelf in each frame.
CDMA Maintenance The CRTU can be in one of four states (active, out-of-service, unequipped, or growth) as indicated by the video state of the CRTU indicator: 2132 - Cell Software Status Display Page 1. act (steady black on green) 2. oos (steady black on red) 3. uneq (steady magenta on black) 4. grow (steady white on magenta).
CDMA Maintenance Entering the menu command to allow or inhibit the execution of a routine CDMA functional test when the test is disabled via translations has no affect. You must first revisit the RC/V ecp or ceqcom2 form and specify an interval value other than 1439.
CDMA Maintenance Command and Report Changes to Support the CRTU Several technician interface input commands and reports have been modified to support the CRTU. Most but not all of the modified input commands are listed below: ■ ALW:CELL a,FT OC - Allows the execution of routine (scheduled) overhead channel functional tests at cell a (1-222). (Entering the ALW:CELL a,FT OC command when the CDMA overhead channel test is disabled via translations has no affect.
CDMA Maintenance — INH:CELL a,FT OC - Inhibits the execution of routine (scheduled) overhead channel functional tests at cell a. — INH:CELL a,FT TP - Inhibits the execution of routine (scheduled) traffic path functional tests at cell a. ■ OP:CELL a,CRTU - Requests the current status (active, out-ofservice, unequipped, growth) of the CRTU at cell a. ■ OP:CELL a,CRTU;UCL:VERSION - Displays the version of firmware and/or software installed on the CRTU at cell a.
CDMA Maintenance CRTU Growth Procedures The recommended procedures for growing a CRTU at a CDMA Cell Site are as follows: 1. Enter the following commands to inhibit the execution of routine CDMA functional tests: INH:CELL a,FT OC INH:CELL a,FT TP 2. Install the CRTU hardware. Consult the installation procedures in the Installation Handbook 225, Section 880 to install the CRTU hardware.
CDMA Maintenance The default interval value for the routine overhead channel functional test is 25 minutes. The default interval value for the routine traffic path functional test is 60 minutes. 8. Optional*: Access the RC/V ceqcom2 form, find the two CDMA-related interval value fields under Functional Test Intervals, and then use those fields to set the interval values for the CDMA functional tests. 9.
CDMA Maintenance The RCC uses the CRTU to perform CDMA functional tests on every antenna face (omni, alpha, beta, gamma, delta, epsilon, zeta) of a CDMA cell. The CRTU must be in the active state to perform the tests. There are two types of CDMA functional tests: overhead channel functional tests and traffic path functional tests.
CDMA Maintenance Default Interval Values The interval values for the routine (scheduled) CDMA functional tests are specified in the ECP translations. The default interval value for the routine overhead channel functional test is 25 minutes, and the default interval value for the routine traffic path functional test is 60 minutes. For a 3-sector cell, the various antenna faces are tested in a sequential fashion: sector 1 (alpha), then sector 2 (beta), and then sector 3 (gamma).
CDMA Maintenance NOTE: Currently, the CDMA functional tests verify the operation of the diversity 0 receive path but not the diversity 1 receive path.
CDMA Maintenance The RCC instructs the CRTU to dial the CRTU-designated MOST directory number. Upon receiving the call, the ECP identifies the call as a MOST call during digit analysis and terminates the test call to a low-tone source at the DCS. The ECP also identifies the call as a MOST call originating from the CRTU. NOTE: Both the ECP and RCC set certain bits in their call records to identify the call as a MOST call originating from the CRTU.
CDMA Maintenance The overhead channel functional test may be initiated in one of three ways: by a manual request, by a timer—scheduled—assuming that the overhead channel functional tests are in the allowed state, or by the RCC after an overhead channel has been migrated to a different CE.
CDMA Maintenance For the access-paging channel test, the RCC instructs the CRTU to initiate a CRTU-designated MOST call. The test passes if the network can set up the call. For a multiple-sector cell, the RCC performs both parts of the overhead channel functional test on sector 1 (alpha), then performs both parts of the overhead channel functional test on sector 2 (beta), and so on until the RCC has tested all sectors of the cell. The overhead channel functional test consists of the following basic steps.
CDMA Maintenance will abort the overhead channel functional test for the selected antenna face. If the cell being tested has more than one antenna face, and if the test was initiated manually for more than one antenna face, the RCC will immediately select and begin testing the next antenna face. If the test was initiated by a timer— a scheduled functional test, the RCC will wait a certain amount of time before testing the next antenna face.
CDMA Maintenance the overhead channel test. Only if the overhead channel test passes will the RCC continue to Step 2. 2. Upon receiving the CRTU origination, the RCC allocates a traffic CE to handle the call and sends a message to the ECP requesting message and subscriber validation. (RCC-ECP message exchange is through the Cell Site data link.) 3. The ECP identifies the call as a CRTU-designated MOST call during digit analysis and terminates the test call to a low-tone source at the DCS. 4.
CDMA Maintenance 10. The RCC sends the flash with information message to the ECP. (RCC-ECP message exchange is through the Cell Site data link.) The ECP sends a MOST forced handoff command to the RCC. 11. The MOST CE selection algorithm at the RCC selects the next CE to which the call should be handed off. The RCC writes data pertaining to the selected CE (CE, CCU, CCC, and sector) into a global data area and then attempts to hand off the MOST call to the selected CE. 12.
CDMA Maintenance Functional Test Errors and System Recovery Actions When a CDMA functional test fails, the RCC hardware error handler (HEH) software subsystem responds in one of two ways, depending upon the failure: ■ Reports the failure to the ECP, takes action to correct the failure, and then reports the result of the recovery action to the ECP. ■ Does nothing more than report the failure to the ECP.
CDMA Maintenance OC 2 OC 3 COMPLETED COMPLETED ALL TESTS PASSED ALL TESTS PASSED What follows is an RMS-generated report for a manually initiated overhead channel functional test that failed: M 11 EXC:CELL 132 FT OC, COMPLETED OC 1 PARTIALLY COMPLETED LOST PILOT An RMS-generated report contains the results for each sector tested (OC 0 = omni, OC 1 = sector 1, OC 2 = sector 2, ...).
CDMA Maintenance ■ Handoff to selected CE is rejected but the call is maintained on the previously selected CE. The test continues; the CE selection algorithm selects the next CE for testing. The failed CE will appear in the report sent to the ECP. Currently, for any type of failure encountered during a traffic path functional test, HEH takes no recovery action other than to report the failure to the ECP. The technician must perform manual recovery procedures from the ECP.
CDMA Maintenance by noting their absence in the report. By observing the passed and failed test results, the technician can make an informed decision as to how to isolate and correct the error.
Lucent Technologies — Proprietary See notice on first page 401-660-100 Issue 11 August 2000 21-29
Lucent Technologies — Proprietary See notice on first page 21-30 401-660-100 Issue 11 August 2000
22 Linear Amplifier Circuit (LAC) Maintenance Contents ■ Contents @-1 ■ LAC Maintenance Procedures @-3 LAC Alarm Summary: LACSUM @-4 LAC Alarm Detailed Report: LACALM @-5 Interpreting the LAC Alarm Reports @-7 Continuous Alarms @-8 MINOR Alarms @-8 MAJOR Alarms @-9 CRITICAL Alarms @-11 SANITY Alarms @-12 INFO Alarms @-13 Troubleshooting Procedures at the Cell Site @-13 Initial Procedure at the Cell Site @-13 Radio Control Procedure for Traffic Dependent Alarms @-14 LAM Alarm
Linear Amplifier Circuit (LAC) Maintenance Sanity Alarm Procedure @-21 Sanity Alarm Troubleshooting @-23 Procedure 1: LAQS Test Equipment IS Available.
Linear Amplifier Circuit (LAC) Maintenance LAC Maintenance Procedures This chapter provides the recommended procedures for identifying and troubleshooting problems with Linear Amplifier Circuits (LACs) in Series II cell site. All cell site maintenance personnel and ECP operators should be familiar with these procedures. It is important to recognize that there are a number of preliminary diagnostic steps which should be taken at the MSC, prior to dispatching maintenance personnel to the cell site.
Linear Amplifier Circuit (LAC) Maintenance LAC Alarm Summary: LACSUM Before the start of the maintenance period, log-on to the ECP and print a copy of the LACSUM report*. This report provides a summary of the day's LAC alarms for each cell site controlled by the ECP.
Linear Amplifier Circuit (LAC) Maintenance MIN = MINOR OTHER Table 22-1.
Linear Amplifier Circuit (LAC) Maintenance The resulting printout is shown below.
Linear Amplifier Circuit (LAC) Maintenance 1 3 **S 05/05/93 06:21 1 3 **S 05/05/93 07:22 1 3 **S 05/05/93 08:21 1 3 **S 05/05/93 09:21 1 3 **S 05/05/93 10:22 1 3 **S 05/05/93 11:21 1 3 **S 05/05/93 12:21 1 3 **S 05/05/93 13:21 1 3 **S 05/05/93 14:22 1 3 **S 05/05/93 15:21 1 3 **S 05/05/93 16:21 1 3 **S 05/05/93 17:21 1 3 **S 05/05/93 18:22 1 3 **S 05/05/93 19:21 As suspected, all alarms generated by cell 1, LAC 3 occur hourly, indicating a continuous
Linear Amplifier Circuit (LAC) Maintenance ! CAUTION: Be careful that LAC alarms generated as a result of recent maintenance activities are not mistakenly interpreted as legitimate LAC alarms. This can be avoided by printing out the LACSUM file, not LACSUM.Ext, at the beginning of the maintenance window. Continuous Alarms Continuous alarms are potentially service affecting and should be attended to promptly.
Linear Amplifier Circuit (LAC) Maintenance determine if the LAC has issued a Processor alarm. A LAC should not be replaced for a MINOR alarm if it has not issued a processor alarm*. Low-level Thermal alarms indicate that the LAC is beginning to overheat. Overheating may be caused by the LAC being overdriven or may be due to a Linear Amplifier Unit (LAU) fan failure or a cell site air conditioning failure. This type of alarm is seldom encountered. See Thermal Alarm Procedure.
Linear Amplifier Circuit (LAC) Maintenance LAU LAM LAU FAN AYM BOARD 10/20 Switch ADDRESS SWITCHES LINEARIZER LEDs & FUSES LINEARIZER FAN Figure 22-1.
Linear Amplifier Circuit (LAC) Maintenance Preamp alarms are the most frequent cause of MAJOR alarms. MAJOR alarms without accompanying MINOR alarms are almost always generated by the Preamp, especially if they are intermittent. A bad Preamp or blown Preamp fuse is indicated by a lighted LAC Preamp LED at the cell site. If a Preamp LED is not visible upon entering the cell site, use the Radio Control Procedure to uncover an intermittent preamp problem. See Preamp Alarm Procedure.
Linear Amplifier Circuit (LAC) Maintenance voltage is removed from the LAMs, thereby shutting down the RF output power of the LAC.) Multiple LAMs in alarm due to tripped breakers are the most common cause of CRITICAL alarms. Other possibilities include multiple blown LAM fuses or failed LAMs, although it is unlikely that the number of LAM failures would have been allowed to progress to this level. This type of failure is indicated by multiple lighted LAM LEDs at the cell site. See LAM Alarm Procedures.
Linear Amplifier Circuit (LAC) Maintenance SANITY alarms, by themselves, are not service affecting, but they may mask other service-affecting conditions. Therefore, this type of alarm should be investigated promptly. NOTE: Resolve SANITY alarms before attempting to troubleshoot other alarms, since the other alarms may or may not be real. See Sanity Alarm Procedure. INFO Alarms All alarms which do not fit into one of the four previous categories are reported as INFO alarms.
Linear Amplifier Circuit (LAC) Maintenance Radio Control Procedure for Traffic Dependent Alarms This procedure is used to exercise the LAC in order to uncover those types of alarms which are traffic dependent. The conditions under which an alarm is generated often depends upon the number of radios active, the frequencies at which they are operating, and also upon the operating temperature of the LAC and/or Preamp. Observe the LAC LEDs while following the procedure described in Step 2 below.
Linear Amplifier Circuit (LAC) Maintenance 5. If a lighted LED is still not observed, and minor alarms have been reported, proceed to the Processor Alarm Procedure to determine if the LAC has generated a processor alarm. 6. If the LAC has not issued a Processor alarm, and minor alarms have been reported, the alarm was probably caused by a faulty LAM or a loose LAM fuse. Refer to the LACALM report to determine the time of day when the alarms occur, and return to the site at that time.
Linear Amplifier Circuit (LAC) Maintenance 4. Remove and check the fuse; if the fuse is good proceed to Step 5. a. If the fuse is blown, replace it with a new fuse. Do not take one from a 10 LAM LAC, thinking the fuse is spare just because the slot is not equipped with an LAM. NOTE: A good fuse must always be in place to prevent a false alarm. b. If the fuse blows right away with little or no traffic present, replace the LAM. c.
Linear Amplifier Circuit (LAC) Maintenance — If only one breaker has tripped, and it is found during an active traffic period, reset the breaker, verifying that it does not trip again. If the breaker does trip again, have the MSC block one or more radios from service until the breaker holds. Return during the maintenance window. — If a tripped 20A breaker is found during the maintenance window, have the radios taken out of service.
Linear Amplifier Circuit (LAC) Maintenance 1. For a C-Series or later LAC (See Figure 22-3) with 20 LAMs, check that the 10/20 switch, located on the circular AYM board is in the 20-LAM position. 2. Follow the procedure for Case 2, above. Figure 22-2.
Linear Amplifier Circuit (LAC) Maintenance LAM LEDs LAM FUSES 10/20 SWITCH Figure 22-3. Location of LAM Fuses, LEDs, and the 10/20 Switch (on C-Series LACs) Preamp Alarm Procedure Notes about Preamps 1. Before a preamp is installed, check that the gain adjustment screw is turned fully counter-clockwise (minimum gain). 2. Before adjusting the gain, be sure to allow at least a 30-minute warm-up period to allow the preamp to stabilize. Notes about Preamp Alarms 1.
Linear Amplifier Circuit (LAC) Maintenance 2. The preamp alarm circuitry monitors the output power difference between the two redundant RF power paths within the preamp. Therefore, in the very unlikely case of two blown fuses, both outputs will be zero and an alarm will not be issued. 3. A preamp alarm may occur at low power level but not at high, or vice versa, or it may be a function of frequency and occur with one radio or group of radios but not with another.
Linear Amplifier Circuit (LAC) Maintenance START NO PREAMP LED ON? YES NOTE: If alarms persist after a preamp is replaced, rule out cables as a cause by swapping or replacing cables. Also try connecting a preamp from a LAC that is not exhibiting a preamp alarm.
Linear Amplifier Circuit (LAC) Maintenance appears as a MAJOR alarm on the ROP, with the word SANITY after the LAC number, and is listed on the LACSUM report under the heading, MAJS. Incorrect LAC address settings are a common cause of LAC SANITY alarms. Addressing problems are usually only encountered upon initial LAC installation or when a LAC is changed. LAC SANITY alarms may also be generated when alarm bus circuits on either the UN166 AFI board or on the LAC are damaged.
Linear Amplifier Circuit (LAC) Maintenance 1 2 Switch Settings LAC Address 0 0 0 0 0 0 1 0 0 0 0 1 2 0 0 0 1 0 3 0 0 0 1 1 4 0 0 1 0 0 5 0 0 1 0 1 6 0 0 1 1 0 SW-1 SW-2 SW-3 SW-4 SW-5 3 4 5 0 Figure 22-5.
Linear Amplifier Circuit (LAC) Maintenance Procedure 1: LAQS Test Equipment IS Available. * 1. Check that all five breakers on each LAC are ON. 2. Check all LAC addresses, verifying that each LAC has a unique address. Verify with the MSC that the number of LACs shown on the MCRT agrees with the number of LACs in the site. If in doubt about the LAC addressing scheme, check the CEQCOM2 database. 3.
Linear Amplifier Circuit (LAC) Maintenance 10. ! Once a problem LAC is isolated, reset its microprocessor by powering it down, waiting 10 seconds, and re-setting the breakers. After re-setting the LAC, bring up two radios and allow at least 2 minutes for any alarms to clear. CAUTION: Make sure that all radios are turned off before re-applying power to the LAC. 11.
Linear Amplifier Circuit (LAC) Maintenance Procedure 2: LAQS Test Equipment IS NOT Available * 1. Check that all five breakers on each LAC are ON. 2. Check all LAC addresses, verifying that each LAC has a unique address. Verify with the MSC that the number of LACs shown on the MCRT agrees with the number of LACs in the site. If in doubt about the LAC addressing scheme, check the CEQCOM2 data base on the ECP. 3.
Linear Amplifier Circuit (LAC) Maintenance connected, or until all of the LACs have been disconnected. Reconnect each LAC to the alarm bus by itself, one LAC at a time, until all faulty LACs are isolated. 11. ! Once the LAC which generates SANITY alarms is isolated, reset its microprocessor by powering it down, waiting 10 seconds, and re-setting the breakers. After resetting the LAC, bring up two radios and allow at least 2 minutes for any alarms to clear.
Linear Amplifier Circuit (LAC) Maintenance 17. Replace all faulty LACs, making sure to correctly set the address on any new LACs. Verify with the MSC that all LAC SANITY alarms have been cleared. NOTE: If replacements are not available, leave all defective LACs disconnected from the alarm bus until they can be replaced. J104 Figure 22-6.
Linear Amplifier Circuit (LAC) Maintenance J1 J2 Figure 0-1.
Linear Amplifier Circuit (LAC) Maintenance AYD5 Figure 22-7.
Linear Amplifier Circuit (LAC) Maintenance UN166 C56 C38 LS32 GND (PIN 8) TX - (PIN 13) LS31 B A C K P L A N E C O N N E C T O R C37 GND (PIN 8) TX + (PIN 14) RX + (PIN 2) RX - (PIN 1) TEST LIMITS CHIP NUMBER OHMMETER ( - ) TERMINAL OHMMETER ( + ) TERMINAL RESISTANCE RANGE (Ohms) 26LS32 PIN 1 PIN 8 (GND) 4k < R < 200k 26LS32 PIN 2 PIN 8 (GND) 4k < R < 200k 26LS31 PIN 13 PIN 8 (GND) R > 20k 26LS31 PIN 14 PIN 8 (GND) R > 20k NOTE : OHMMETER ( + ) TERMINAL ON GROUND PIN Figure 22-8.
Linear Amplifier Circuit (LAC) Maintenance LAC ALARM CONN. Figure 22-9.
Linear Amplifier Circuit (LAC) Maintenance FAC/FLD SWITCH PROCESSOR ACCESS PORT LAM Bias Fault Procedure Figure 22-10. Location of the FAC/FLD Switch and Microprocessor Access Port (Cover Removed) NOTE: This fault condition is reported differently in C-Series LACs than in A/BSeries LACs. Symptoms: 1. For C-Series LACs - Critical Alarm, LINEARIZER and LINEAR AMPLIFIER UNIT LEDS are both ON. For A/B-Series LACs - Minor Alarm, LINEARIZER LED is ON. 2. All LAM LEDs are OFF. 3.
Linear Amplifier Circuit (LAC) Maintenance 2. A short circuit on the circular AYM board. 3. A failure of the power unit within the Linearizer (LZR) that provides 5 volt bias to the LAMs. Procedure: Fan Alarm Procedure 1. Have the MSC take all radios on the LAC out of service (all radios OFF). 2. Remove DC power from the LAC by opening its breakers. 3. Disconnect all LAM ribbon cables. 4. Reapply power. If the alarm does not clear, the problem is within the LAC. Replace the LAC. 5.
Linear Amplifier Circuit (LAC) Maintenance STATUS STATUS INPUT DRIVE INPUT DRIVE ANTENNA FANS LINEAR AMPLIFIER UNIT LINEAR AMPLIFIER UNIT PRE-AMPLIFIER PRE-AMPLIFIER LINEARIZER LINEARIZER LINEARIZER FAN 10A 24V 3A 24V PRE AMPLIFIER LINEAR AMPLIFIER UNIT FAN FCA LINEARIZER FAN 2A 24V PRE AMPLIFIER 2A 24V 5A 24V LINEAR AMPLIFIER UNIT FAN Figure 22-11. View of the Linearizer Faceplate with the Front Grille Removed Procedure: 1.
Linear Amplifier Circuit (LAC) Maintenance Linearizer Fan Symptoms: C-Series LACs: 1. Major Alarm 2. LAC LEDS = FANS and LINEARIZER A/B-Series LACs: 1. Minor Alarm 2. LAC LEDS = LINEARIZER Procedure: 1. Check the LINEARIZER FAN fuse on the front panel of the linearizer. Replace with a new fuse, if blown. 2. If the fuse is good, remove the front grille from the Linearizer and carefully check to see if the fan is turning. The fan is located on the far right side of the linearizer cabinet.
Linear Amplifier Circuit (LAC) Maintenance POS. NEG. INDUCTOR Figure 22-12. Measuring the LAU Fan Voltage INFO Alarm Procedure Symptoms: 1. INFO alarms reported at the MSC 2. The INPUT DRIVE LED is ON Probable Causes: 1. The LAC is being overdriven 2.
Linear Amplifier Circuit (LAC) Maintenance 1. During the maintenance period, have the MSC configure all of the radios on the LAC. Using the switch on each radio, turn off all but one and measure the output power of each radio at the J4 antenna connector to be sure that the LAC is operating within its rating of 240 watts for a full-power LAC or 100 watts for a half-power LAC, taking into account the insertion loss from the LAC output to the J4 antenna connector. 2.
Linear Amplifier Circuit (LAC) Maintenance Thermal Alarm Procedure Thermal alarms are generated when the temperature of the LAC rises to a level which may cause an LAM failure. This condition will not occur as long as the LAU FAN (See Figure 22-12)and cell site air conditioning are both functioning properly. Symptoms: 1. MINOR, MAJOR, or CRITICAL alarms at the MSC 2. LAU fan failure 3. Cell site air conditioning failure Procedure: 1.
Linear Amplifier Circuit (LAC) Maintenance LAMs near the bottom of the LAU and use a flashlight to check the position of the switch. (There are actually two switches, but only the upper one is used.) Insert a scribe, or other pointed tool, into the circular indent in the upper slide switch, making sure that the switch is positioned toward the front of the LAC. 2. If the position is wrong, change it and check to verify that the alarm has cleared.
Linear Amplifier Circuit (LAC) Maintenance 5. If the alarm remains clear, try other combinations of radios as described in the Radio Control Procedure. Be sure the LAC is not reporting a SANITY alarm at the MSC. 6. After leaving the site, continue to monitor the LAC from the MSC to determine if the alarm has cleared. If the alarm returns, go back to the site and query the microprocessor.
Linear Amplifier Circuit (LAC) Maintenance F8 F7 Figure 22-13.
Linear Amplifier Circuit (LAC) Maintenance ! CAUTION: The information stored in the Processor Alarm Registers is lost when the LAC is powered down. Therefore, do not turn off the LAC prior to checking the alarm registers. Microprocessor Alarm Registers - Corrective Actions NOTE: For 10-LAM LACs, verify that the LAC is configured with a 2-dB attenuator on the AYF4 circuit pack J35 connector. For 20-LAM LACs, verify that the attenuator is not installed.
Linear Amplifier Circuit (LAC) Maintenance YF4 Figure 22-14. Linear Amplifier Circuit (LAC), Front View ! CAUTION: Be sure to re-connect all alarm bus cables before leaving the cell site. Verify that the alarm bus is functioning properly by checking with the operator at the MSC to be sure that no alarms are being generated.
Continuous Register 1 and Register 3 Processor Alarms: Symptoms: 1. Continuous LINEARIZER LED. 1. Numerous Processor alarms. Suspect: 1. A blown fuse on the AYG3 circuit pack. 2. A blown FCA fuse on the front panel of the Linearizer. Procedure: 1. Before checking any fuses, inhibit call processing and turn off all radios on the LAC. Open all 5 breakers which feed the LAC. 2. For Register 3 alarms, check the FCA fuse on the front of the Linearizer.
2. Numerous Processor alarms. Procedure: 1. Be sure to rule out problems with the FCA and AYG3 fuses, as described above. 2. If the LINEARIZER LED is continuously lighted and the LAC has issued a large number of Processor alarms, then the LAC should be replaced. The LAC Alarm Query System (LAQS) The LAC's microprocessor stores the current LAC alarm status as well as information about what caused Processor MINOR alarms.
! CAUTION: Don't forget to reconnect the J104 connector at the top of the RCF prior to leaving the site. Running the LAQS Software 0 After connecting to the alarm bus, run the LAQS program. The software should be installed in the C:\LAQS directory. Type in the following DOS commands: cd C:\LAQS LAQS The computer will display a menu similar to the following: LAQS - Linear Amplifier Query System Addresses of On-Line LACS: 0 1 2 3 Currently Selected LAC: 0 OPTIONS MENU ----------------------1) Show Alarm S
sure that the LAC has the proper firmware version installed, as explained in the Processor Alarm Procedure. Description of LAQS Menu Options 1. 0 Show alarm status of On-Line LACs Selecting this option will cause the software to continuously display the alarm status of the LACs attached to the alarm bus. This option can be used to monitor the LAC alarm status in a cell site while performing maintenance.
Retrieving Error Registers..... Error Registers Count --------------- ----- Register 1 0 Register 2 0 Register 3 0 Register 4 0 Register 5 0 Register 6 0 Register 7 0 Register 8 0 Register 9 0 Register 10 0 Register 11 0 Register 12 0 Register 13 0 3. Clear Error Registers of Current LAC Selecting this option will clear the contents of the error registers in the LAC microprocessor.
This command will cause the computer to continuously search for LACs connected to the alarm bus. This command is useful for diagnosing LAC alarm bus problems. The following lines will be displayed: ON-Line LAC Addresses LAC #0 LAC #1 LAC #2 LAC #3 Press any key to return to main menu: Finding On-Line LACs ........................... 6. Set Option and This command will display the following options: 1.
For additional information, consult Lucent Technologies Customer Information Bulletin 196A, "Improved "C" Linear Amplifier Circuit Features." Differences in Alarm Reporting Between A/B-Series and C-Series LACs 0 Although all LACs issue the same types of alarms, there are differences between C-Series and A/B-Series LACs which affect how failures are reported under the various categories of alarms (MINOR, MAJOR, and CRITICAL), as well as which LAC LEDs are lit under various trouble conditions.
as the present LAC alarm status, is necessary in order to properly diagnose LAC related problems. Linearizer Faceplate LEDs 0 There are five LEDs on the front faceplate of the Linearizer; four of them are labeled the same on all LACs, even though the conditions under which they light are somewhat different for C-Series LACs than for earlier vintages, as described above. The position of the LEDs and their labels is shown below, followed by a description of their functions.
LineariZeR (LZR) - Indicates a failure in the Linearizer; either the LZR fan, an internal power supply failure, a blown FCA (Final Correction Amplifier) fuse, or a problem related to the microprocessor (Processor alarm). Linear Amplifier Unit (LAU) LEDs 0 Associated with each LAM on the circular AYM power distribution board in the LAU (Linear Amplifier Unit), is a fuse and an LED which is lighted whenever a loose or blown fuse or a failed LAM is detected.
■ PK/PCB style circuit board mounted fuses on the AYG3 circuit pack. On recently manufactured LACs these fuses can be accessed through a cover plate on the left side of the Linearizer. These fuses can only be checked with an ohmmeter. ■ Before checking any Linearizer fuses, inhibit call processing and turn off all radios on the LAC. Open the 30 amp LAC circuit breaker which feeds the Linearizer.
F8 and F7, the second and third fuses from the top, protect the LAC drive circuitry during a severe overload condition, one fuse for each of the two redundant RF power paths inside the driver. They are both 3A Buss PCB fuses with part number BK/PCB-3. If either of these fuses is blown, replace both of them with BK/PCB-5 fuses by Bussman. Be careful not to drop a fuse into the casting. ! CAUTION: The other fuses under the cover plate should not be replaced in the field.
NOTE: Prior to Cell Site Software Release 4.3, 32 addresses were reserved for LACs. With the introduction of Release 4.3, that number was reduced to 7, numbered 0 through 6. Alarm Status Registers 0 Status registers on the AFI board store the current alarm information for each LAC. In addition to alarm state, 10/20 configuration, and WARNING, a register is also reserved for a SANITY alarm. A SANITY alarm is set if a LAC address which is supposed to be equipped fails to respond to a status query.
Maintenance CRT (MCRT): 0 The MCRT terminal * in the MSC serves as the primary interface between the cellular system and the system operator. It is used for most administrative and diagnostic tasks and may be used to display status information for all cells serving the MSC. If the MSC receives an alarm from any piece of equipment or sensor in the system, that alarm state will appear at the top of the screen.
LAC alarm message on the ROP: 0 The LAC alarm message on the ROP contains 5 lines. The first line gives an indication of the alarm level, the time at which the alarm was printed (in minutes past the hour), and the number of the cell site which generated the alarm. Alarm levels are indicated by a single asterisk for MINOR (*), two asterisks for MAJOR (**), and an asterisk with a C in front for CRITICAL (C*).
Table 22-5. Example 1: A MINOR alarm was printed at 11:29 PM on LAC 2 in Cell 222: * 29 REPT: CELL 222 ALARM SCANNING SCAN POINT: OFFSET 11, BIT 4 ALARM: LAC ALARM 2 STATE: OFF NORMAL 06/01/93 23:29:48 #834867 Table 22-6. Example 2: An RF Overdrive WARNING was printed at 11:58 PM on LAC 2 in Cell 54: 58 REPT: CELL 54 ALARM SCANNING SCAN POINT: OFFSET 23, BIT 2 ALARM: LAC ALARM 2 STATE: OFF NORMAL 06/01/93 23:58:04 #836035 Table 22-7.
■ SD2R271-02 - Series II Cell Site ■ J41660C-2 - Linear Amplifier Frame ■ J41660CA-2 - Linear Amplifier Circuit ■ J41660CA-3 - Modular Linear Amplifier Circuit ■ ED2R839-30 - Linear Amplifier Unit ■ ED2R840-30 - Linear Amplifier Module Tools The following tools are required: ■ Small screwdriver ■ Large screwdriver (3/8-inch by 10-inch) ■ Screw-holding screwdriver (1/4-inch by 14-inch) ■ 1/4-inch wrench ■ 5/16-inch wrench. Removal Procedure The first equipped LAC is always in LAF0.
1. At the cell site power plant, set the circuit breakers for the affected LAC to OFF in the following sequence — CB4, CB3, CB2, CB1, and CB0. 2. Remove the LAMs and/or dummy modules from the LAC. 3. Remove the screws securing the LAC to the frame. 4. Pull the LAC out to its fully extended and locked position. ! CAUTION: Use extreme care when handling coaxial cables. Damage to these cables could result in system degradation. 5. Disconnect cables. 6. Remove the LAU locking pins.
5. Secure the LAC to the frame using the screws removed in the removal procedure. NOTE: The LAMs are not pre-mounted on the LAU. A full-power LAC requires 20 LAMs; a half-power LAC requires 10 LAMs plus 10 dummy modules. Standoffs for mounting the LAMs are provided. 6. Insert standoffs in all 20 positions on the LAU and secure with a 1/4-inch wrench. Do not over-tighten. NOTE: Every position on the LAU must have a LAM installed.
Table 22-8.
Table 22-8. Linear Amplifier Circuit Cable Connections (Contd) LAF LAC W# Comcode Plug Jack CKT Function 1 6 W65 846492585 J36 LZR PRE-AMP RF OUT 1 6 W117 HY1-2 LZR TO AIF 1 6 W47 J10 LZR ALARMS 846492338 Set Linear Amplifier Circuit Address Perform the following procedures: 1. Locate switch 1 on the Linearizer AYE1 circuit board. This switch consists of five rocker switches. The lower rocker (5) is the least significant bit. 2. Set the switches as follows: Table 22-9.
2. At the cell site power plant, set the circuit breakers for the affected LAC to ON in the following sequence — CB0, CB1, CB2, CB3, and CB4. 3. Verify that cooling fans are operating properly. 4. Have the MSC bring up 2 radios connected to the LAC and wait at least 2 minutes for any alarms to clear. 5. Verify that all LEDs are off on the Linearizer. 6. Verify that all LEDs are off on the LAU AYM circuit board. 7. Make sure that all radio switches are turned ON before leaving the site.
1. At the cell site power plant, set the circuit breakers for the LAC being converted to OFF in the following sequence - CB4, CB3, CB2, CB1, and CB0. 2. Remove 4 LAMs from the lower left quadrant of the LAU. 3. Locate the AYF4 circuit pack which is the third pack from the left in the Linearizer, and the SMA connector, J35, on the top of the pack nearest the front. (The connector toward the rear connects to the preamp.) A coaxial cable with a right-angle end-connector is connected to J35.
LINEAR AMPLIFIER UNIT (LAU) CONVERSION RECORD #LAM DATE CONVERTED 10 20 20 10 10 SWITCH (SET TO 10 FOR 10 LAMs, SET TO 20 FOR 20 LAMs) LABEL (MARK DATE CONVERTED TO 10 LAM OR 20 LAM LAC) 20 10 LINEAR AMPLIFIER FRAME (LAF) LINEARIZER (LZR) (COVER REMOVED) LINEAR AMPLIFIER CIRCUIT (LAC) Figure 22-15.
STATUS STATUS INPUT DRIVE INPUT DRIVE ANTENNA FANS LINEAR AMPLIFIER UNIT LINEAR AMPLIFIER UNIT PRE-AMPLIFIER PRE-AMPLIFIER LINEARIZER LINEARIZER 10A 24V LINEARIZER FAN FCA 3A 24V PRE AMPLIFIER LINEAR AMPLIFIER UNIT FAN 2A 24V 2A 24V 5A 24V LINEARIZER FAN PRE AMPLIFIER LINEAR AMPLIFIER UNIT FAN Figure 22-16. Linear Amplifier Unit 5. Install the 2-dB, in-line attenuator (specified above) on the J35 connector. Tighten to 7 inch-pounds using the 5/16-inch wrench. 6.
8. On C-Series LACs, change the setting of the 10/20 switch on the face of the circular AYM board on the LAU from the 20 to the 10 position. Make sure the switch is firmly in position. 9. With a permanent marking pen, record the date in the appropriate space on the Conversion Record label located on the front face of the Linearizer cabinet. 10. Follow the power-up procedure described in Paragraph G.
The fan spare parts kits listed below are required. ■ LAU (Central) fan kit - 847011699 ■ Pre-amp fan kit - 847011681 ■ Linearizer fan kit - 847011681. NOTE: Both pre-amp fans should be replaced at the same time. This requires two pre-amp fan kits. To order these kits, refer to AT&T 401-610-120, AUTOPLEX Series II Recommended Spare Parts, Tools, and Equipment. LAU (Central) Fan Replacement Included in 847011699 kit: ■ LAU (Central) fan (1) ■ Protectors for RF connectors (40).
2. ! To remove the Linear Amplifier Modules (LAMs) counter-clockwise from position 13 to position 4, perform steps a through e on each of the 10 LAMs. CAUTION: The LAMs may be hot Figure 22-17.
a. 2a. Disconnect the ribbon cable from the printed circuit board (donut). Figure 22-18.
b. Unscrew the LAM from its standoff. Figure 22-19. Unscrew the LAM from its standoff c. Pull firmly.
d. Protect the RF connectors on each LAM with protective sleeves included in the kit. Figure 22-20. RF connectors on each LAM e. Set LAM aside.
3. Disconnect the remaining ribbon connectors from the donut board. Figure 22-21. Disconnect the remaining ribbon connectors from the donut board 4. Remove the printed circuit board (donut) from the standoffs. Save screws. NOTE: Standoffs may loosen while attempting to loosen screws. If this should occur, use pliers to hold standoffs stationary while backing out the screws.
Figure 22-22.
5. Disconnect D-Shell connector located behind the donut board. Figure 22-23. Disconnect D-Shell connector located behind the donut board 6. Carefully push the printed donut board to the right side. NOTE: If you are having trouble pushing it to the side, check to clear all cabling.
Figure 22-24. Push the printed donut board to the right side 7. Remove and save silver standoffs and washers which hold the fan assembly in place with a 7/16-inch nut driver.
NOTE: You must support the fan once the last standoff is loosened. Figure 22-25. Remove and save silver standoffs and washers 8. Disconnect cabling leading to the large, round splitter/combiner plate using pliers at each connection. The red and blue cable connections are at the inductor. The white cable connection is free-hanging.
NOTE: If no inductor is present, the red, blue, and white cable connections are all free-hanging. 9. 10. Discard the old fan assembly and replace with new fan assembly. Connect cabling to the new fan assembly (white cable to white cable, blue cable to the same side of inductor as the other blue cable, and red cable to same side of inductor as the other red cable). NOTE: If there is no inductor, cable connections should be made red to red, white to white, and blue to blue. 11.
1. To turn power off, turn off ALL breakers to the frame that house the preamp fans. For each LAC, turn off linearizer circuit breaker first and then turn off the four LAU circuit breakers. 2. Open the Frame Interface Assembly (penthouse) door by first loosening two screws and then lifting. Figure 22-26. Cut the three cables (black, red, blue) to each fan 3. Cut the three cables (black, red, blue) to each fan approximately 6 inches from the fan itself.
NOTE: Pre-amplifier fans are replaceable in pairs. Figure 22-27. Remove both fans 4. To remove both fans, remove the four screws that hold each fan and finger guard in place. Save finger guards and screws. 5. Discard old fans and replace with new fans. 6. Fasten new fans with finger guards onto linear amplifier frame.
NOTE: Air should go in (intake) the left fan and out (exhaust) the right fan. See marking on fan label for airflow direction. 7. Splice cabling (red to red, black to black, and blue to blue) for both fans using heat gun. 8. Close the penthouse door and tighten screws. 9. Restore power to the frame. For each LAC, turn on the four LAU circuit breakers first, then the linearizer circuit breaker. Linearizer Fan Replacement Included in 847011681 kit: ■ Linearizer fan (1) ■ Splices (3).
1. To turn power off, identify LAC where the malfunctioning linearizer fan resides. Figure 22-28. Identify LAC where the malfunctioning linearizer fan resides 2. Locate a screw that holds the fan in place (as shown above) and proceed to Step 3. If you cannot locate it, the fan is not field replaceable. Notify your AT&T representative. 3. Turn off the circuit breaker to the linearizer with the malfunctioning linearizer fan.
4. Pull the linearizer fan fuse. Figure 22-29.
5. Remove the linearizer faceplate. Save the faceplate and nine flat-head screws. Figure 22-30. Linearizer faceplate 6. Remove and save screws which mount the LAC to the frame. 7. Slide LAC forward. 8. Remove and save the two screws, which secure the fan mounting plate, from the back of the linearizer.
9. Remove and save the two screws, which secure the fan mounting plate, from the top of the linearizer. Figure 22-31. Fan Mounting Plate 10. ! Cut cabling to the right of any existing splice. CAUTION: The circuit packs may be hot. 11. Slide the fan assembly out.
12. Remove the fan from its sheet metal mounting plate. Save the screws, finger guards, and plate. Take note of the positioning of fans and finger guards. 13. Discard old fan and replace with new fan. 14. Fasten the new fan and finger guards onto the mounting plate. NOTE: Air should flow to the left. See marking on fan label for air flow direction. 15. Splice cabling by color (red to red, black to black, blue to blue) using heat gun.
Figure 22-32. Cabling by Color (Red To Red, Black To Black, Blue To Blue) 16. Lay all cabling into the trough. 17. Slide the fan assembly into place and replace two screws at the top and two screws at the rear of the linearizer. 18. Slide the LAC back inside and replace the screws that mount the LAC to the frame. 19. Replace linearizer faceplate. 20. Replace linearizer fan fuse. 21. Restore power.
Lucent Technologies — Proprietary See notice on first page 22-90 401-660-100 Issue 11 August 2000
