User's Manual Part 2

ManualsBrandsEricsson Radio Systems ManualsElectronicsPCS Broadband GSM Base Station

RBS 2109 User’s Guide

Example of an Unacceptable DTF Measurement

P007952A

CAL ON LIM ON 259 POINTS RECALL

1.20

ON/OFF

50.0DIST (m)0.0

1.00

EDIT

DELTA

(M2 - M1)

MARKER

PEAK

BACK

M3=OFFM1:1.01,2.3m

M4=OFF :+0.07, +38.6m

DTF DTF2

MARKER

VALLEY

Figure 36 Example of an Unacceptable DTF Measurement

6.3.3 Measuring Feeder Length

This section describes how to measure the feeder length, based on the result of

the test in chapter Section 6.3.2 Testing Feeder Installation on page 80.

1. Press the MARKER key.

2. Press the M1 soft key.

3. Press the EDIT soft key and place the M1 marker at the near end of the

feeder using the UP/DOWN arrow key. See figure below.

N/LZT 720 0090 Uen R1A 2004-09-17

Summary of content (158 pages)

PAGE 1
RBS 2109 User’s Guide Example of an Unacceptable DTF Measurement DTF CAL ON LIM ON 1.20 DTF2 259 POINTS RECALL ON/OFF EDIT DELTA (M2 - M1) MARKER TO PEAK MARKER TO VALLEY 1.00 0.0 M1:1.01,2.3m 2 :+0.07, +38.6m DIST (m) M3=OFF M4=OFF 50.0 BACK P007952A Figure 36 6.3.3 Example of an Unacceptable DTF Measurement Measuring Feeder Length This section describes how to measure the feeder length, based on the result of the test in chapter Section 6.3.2 Testing Feeder Installation on page 80. 1.
PAGE 2
RBS 2109 User’s Guide DTF CAL ON LIM ON 1.20 DTF1 259 POINTS RECALL ON/OFF EDIT DELTA (M2 - M1) MARKER TO PEAK MARKER TO VALLEY 1.00 0.0 M1:1.01,2.3m 2 :+0.07, +38.6m DIST (m) M3=OFF M4=OFF 50.0 BACK P007951A Figure 37 Placing the M1 and M2 Markers 4. Press the BACK soft key and then the M2 soft key. 5. Press the EDIT soft key and place the M2 marker at the far end of the feeder, using the UP/DOWN arrow key. See figure above. 6.
PAGE 3
RBS 2109 User’s Guide 1. The cell ID found in the Site Installation Documentation is "SOF007_A". 2. The text on the feeder label is "Cell A: DX1". 3. The type of measurement is DTF, so the name of the measurement is "DTFSOF007ADX1". Example 1 6.5 Naming a DTF Measurement Calculating the Feeder Attenuation This section describes how to calculate the attenuation of the feeder system. 1. Use the feeder length measured in Section 6.3.3 Measuring Feeder Length on page 82. 2.
PAGE 4
RBS 2109 User’s Guide Table 15 Attenuation for Different Cables Feeder Type Andrew Attenuation, dB/m (CABLE LOSS) GSM 800 GSM 1900 1/4” LDF1 0.124 0.195 1/4” FSJ1 (flex) 0.179 0.278 3/8” LDF2 0.106 0.166 3/8” FSJ2 (flex) 0.121 0.191 1/2” LDF4 0.066 0.104 1/2” FSJ4 (flex) 0.107 0.171 7/8” LDF5 0.037 0.060 1 1/4” LDF6 0.027 0.043 1 5/8” LDF7 0.022 0.
PAGE 5
RBS 2109 User’s Guide Example 2 6.6 Calculating the Total Feeder Attenuation Calculating the Feeder Delay This section describes how to calculate the total delay in the feeder system. 1. Use the feeder length measured in Section 6.3.3 Measuring Feeder Length on page 82. 2. Find the delay value (ns/m) for the cable type in Table 15 on page 85. Calculate the total attenuation for each feeder and jumper, by multiplying the length in metres with the delay per metre. 3.
PAGE 6
RBS 2109 User’s Guide Table 16 Delay Specifications for Different Cables Feeder Type Andrew Delay, ns/m 1/4” LDF1 3.9 1/4” FSJ1 (flex) 4.0 3/8” LDF2 3.8 3/8” FSJ2 (flex) 4.0 1/2” LDF4 3.8 1/2” FSJ4 (flex) 4.1 7/8” LDF5 3.7 1 1/4” LDF6 3.7 1 5/8” LDF7 3.8 Note: If the cable type is not found in the table above, the values must be taken from the manufacturer’s specifications.
PAGE 7
RBS 2109 User’s Guide Example of Calculating the Total Feeder Delay Example 3 88 Calculating the Total Feeder Delay EN/LZT 720 0090 Uen R1A 2004-09-17
PAGE 8
RBS 2109 User’s Guide 6.7 Performing SWR Test on Passive Antenna Systems (Without TMA) The purpose of the SWR test is to verify that the antenna system functions correctly when it is completely installed. The test verifies that the SWR is not too high and that the signal is not reflected back into the RBS. 6.7.1 Connecting SWR Test Setup This section describes how to connect the SWR test setup for passive antenna systems (without TMA). 1. Connect the test equipment to the RBS jumper, see figure below.
PAGE 9
RBS 2109 User’s Guide 6. Observe the trace in the frequency range according to the table below. Table 17 TMA) Measurement Frequency Range for Passive Antenna Systems (No System Start Freq. MHz Stop Freq. MHz GSM 800 824 894 GSM 1900 1850 1990 7. Check that no SWR levels are over 1.4 (= 15.6 dB RL) between the frequencies stated in the table above. For conversion between VSWR and Return Loss see Table 20 on page 99. Enter the test result in the test record.
PAGE 10
RBS 2109 User’s Guide Example of an Unacceptable SWR Measurement CAL ON LIM ON 2.00 SWR ANTENNA 900 259 POINTS RECALL M1 M2 M3 1.4 M4 1.00 800.0 M1:1.03,889.9MHz M2:1.19,959.7MHz FREQ (MHz) M3=OFF M4=OFF 1000.0 ALL OFF P010277A Figure 41 TMA 6.8 Example of an Unacceptable SWR Measurement, GSM 900, No Performing SWR Test on Antenna Systems with ddTMA The purpose of the SWR test is to verify the antenna system when it is completely installed.
PAGE 11
RBS 2109 User’s Guide TX/RX antenna ddTMA Test Equipment RBS Jumper Feeder TMA Jumper Tx Rx ANT Antenna Jumper Bias Injector P012636A Figure 42 6.8.2 Test Setup for Antenna Systems with ddTMA Testing the Antenna System 1. Check that the Site Master’s display shows ‘‘CAL ON’’, indicating that the Site Master is calibrated. If the display shows ‘‘CAL OFF’’, calibrate the Site Master according to Section 6.2 Calibrating the Antenna Tester on page 76. 2.
PAGE 12
RBS 2109 User’s Guide Table 18 Measurement Frequency Range for Antenna Systems with ddTMA RX Band (on TMA Label) TX Band (Measurement Frequency Range) Start Freq. MHz Stop Freq. MHz Start Freq. MHz Stop Freq. MHz GSM 800 824 849 869 894 GSM 1900 1850 1910 1930 1990 1850 1880 1930 1960 1865 1895 1945 1975 1880 1910 1960 1990 System 7. Check that no SWR levels are over 1.5 (= 14.0 dB RL) in the TX band, see table above.
PAGE 13
RBS 2109 User’s Guide Example of an Acceptable SWR Measurement CAL ON LIM ON 2.00 SWR DDTMA 900 259 POINTS RECALL M1 M2 M3 1.5 M4 1.00 800.0 M1:1.22,934.9MHz M2:1.17,959.7MHz FREQ (MHz) M3=OFF M4=OFF 1000.0 ALL OFF P010266A Figure 43 ddTMA Example of an Acceptable SWR Measurement, GSM 900 with Example of an Unacceptable SWR Measurement CAL ON LIM ON 2.00 SWR DDTMA 900 259 POINTS RECALL M1 M2 M3 1.5 M4 1.00 800.0 M1:1.22,934.9MHz M2:1.17,959.7MHz FREQ (MHz) M3=OFF M4=OFF 1000.
PAGE 14
RBS 2109 User’s Guide 6.9 Naming an SWR Measurement This section describes how to give the measurement a unique name traceable to the correct antenna system on the correct site. 1. Find the cell ID in the Site Installation Documentation. 2. Read the label on the jumper measured. 3. Combine the measurement type, cell ID, and label text (a unique name with a maximum of 16 characters). The following example illustrates these steps: Site Installation Documentation 1.
PAGE 15
RBS 2109 User’s Guide Test Record for Antenna System Tests Date: Site Name: Site No: RBS Serial No: Tester's Name: Test Instrument: Anritsu Site Master S_______ Serial Number: Installation Check DTF Test Feeder Length RRU 0 RRU 1 RRU 2 RRU 0 RRU 1 RRU 2 RRU 0 RRU 1 RRU 2 RRU 0 RRU 1 RRU 2 TX(/RX)1 TX(/RX)2 RX1* RX2* * If applicable Total Feeder Attenuation TX(/RX)1 TX(/RX)2 RX1* RX2* * If applicable Total Feeder Delay TX(/RX)1 TX(/RX)2 RX1* RX2* * If applicable SWR Test SWR/Return L
PAGE 16
RBS 2109 User’s Guide 6.10.2 Making a Test Record Supplement The figure below is an example of a printout from the Site Master Software Tools. This should be added as a supplement to the test protocol, and included in the Site Installation Documentation.
PAGE 17
RBS 2109 User’s Guide 6.10.3 Filling in the Checklist The following checklist is not mandatory but is strongly recommended. Local procedures and safety regulations must be evaluated and included in this checklist. Table 19 Checklist Check the following: 6.11 OK 1. That all outdoor antenna system connectors are covered with sealing tape. 2. That the test record is filled in. 3. That the Site Installation Documentation is completed with the test record and the test record supplements.
PAGE 18
RBS 2109 User’s Guide Table 20 Conversion Table Return Loss (dB) SWR Return Loss (dB) SWR Return Loss (dB) SWR 4.0 4.42 16.0 1.38 28.0 1.08 6.0 3.01 16.2 1.37 28.5 1.07 8.0 2.32 16.4 1.36 29.0 1.07 10.0 1.92 16.6 1.35 29.5 1.07 10.5 1.85 16.8 1.34 30.0 1.06 11.0 1.79 17.0 1.33 30.5 1.06 11.2 1.76 17.2 1.32 31.0 1.05 11.4 1.74 17.4 1.31 31.5 1.05 11.6 1.71 17.6 1.30 32.0 1.05 11.8 1.69 17.8 1.29 32.5 1.04 12.0 1.67 18.0 1.29 33.0 1.
PAGE 19
RBS 2109 User’s Guide 100 EN/LZT 720 0090 Uen R1A 2004-09-17
PAGE 20
RBS 2109 User’s Guide 7 Site Installation Tests This section describes the test procedure for site installation tests. 7.1 Preconditions Before starting the tests, ensure the following: • A completed test record for Antenna System Tests is available • The nominal AC mains voltage and/or DC supply on the site is known Note: The information above can be found in: Site Installation Documentation 7.1.
PAGE 21
RBS 2109 User’s Guide Inspecting the Cable Connections Verifying AC Mains and/or DC Power Supply Switching on the RBS Testing Fan Unit Setting the IDB Parameters Reading Fault Status Testing External Alarms Performing Concluding Routines P010216B Figure 47 Work Process for Site Installation Tests The work order can be altered or tests can be removed due to local circumstances, but if this is the case, an investigation of the consequences must be carried out.
PAGE 22
RBS 2109 User’s Guide Danger! Electric shock risk. Avoid both direct and indirect contact with parts connected to mains power as this is likely to be fatal. Switch off the mains power before starting work. 1 Open the sunshields and the RRU, and remove the lid from the MBU. 2 If applicable, measure the incoming AC Mains power to the RBS, using a multimeter. Check that the incoming AC Mains power is between 100 and 127 V AC, or between 200 and 250 V AC.
PAGE 23
RBS 2109 User’s Guide 1 Switch on the RBS AC on/off switches on the MBU on all cabinets. Repeat this procedure for the RBS DC on/off and the RRU on/off switches. 2 Before continuing testing of the site installation, ensure that the indicators on the RRU and IXU interface panels have the status shown in the table below when the RBS is in local mode.
PAGE 24
RBS 2109 User’s Guide Table 23 IXU Indicators Before Setting the IDB Parameters (1) DC power on On IXU temp. Off Transmission OK On/Off (2) (1) Depending on power system configuration. (2) Status, depending on transmission configuration. Note: In cold conditions, the RBS may need up to 60 minutes to warm up, during which time the IXU or RRU temperature indicator is on. The internal heater works only with an AC power supply. 3.
PAGE 25
RBS 2109 User’s Guide Table 24 Fan Unit Indicators After Test Fan unit Indicator Status Fault Off Operational On 5. Put back the fan unit cover. 7.6 Setting IDB Parameters This section describes how to set the IDB parameters using the Operation and Maintenance Terminal (OMT). For more information on the use of the OMT, see: OMT User’s Manual EN/LZN 720 0001 Work Process for Setting IDB Parameters This section describes the work process for setting the IDB parameters.
PAGE 26
RBS 2109 User’s Guide Connecting the OMT Reading the IDB Creating IDB Defining External Alarms Defining ALNA / TMA Parameters Defining Delay Defining GPS Parameters Defining Hardware Info for Passive Units Defining Loss Defining RBS Identity Defining Transmission Interface E1, 75 Defining Transmission Interface E1, 120 Defining Transmission Interface T1, 100 Defining TEI Defining TNOM Installing IDB P011295B Figure 49 Note: Work Process for Setting IDB Parameters The IDB parameter values require
PAGE 27
RBS 2109 User’s Guide 7.6.1 Connecting OMT This section describes how to connect the OMT physically to the RBS. 1. Remove the lid from the OMT port on the IXU. 2. Connect the OMT cable from the PC serial port to the OMT port on the right-hand side of the IXU. If an extended OMT cable is connected to the OMT port, then connect the OMT cable to the end of the extended OMT cable. Local/Remote AC power on DC power on IXU temp.
PAGE 28
RBS 2109 User’s Guide Table 25 Reading and Checking IDB Check that the following parameters are correct: OK Transmission interface Cabinet configuration(s) Antenna sector configuration(s) 5. If the IDB parameters in the table above need to be set, see Section 7.6.3 Creating IDB on page 109. If the IDB parameters above are correct, set the following applicable site-specific IDB parameters: 7.6.
PAGE 29
RBS 2109 User’s Guide Figure 51 Creating IDB Defining Cabinet Setup 1. To add cabinets to the Cabinet Setup box, click New to open the Define Setup for Cabinet window. 2. In the Cabinet Type box, select the RBS ‘‘2109’’. 3. In the Define Master Cabinet Setup window, select the applicable master cabinet configuration and click OK: – IXU – IXU/RRU 4. Select the power system used: – 230/115 V AC, no backup – 230/115 V AC, external battery – – 48 V DC 5.
PAGE 30
RBS 2109 User’s Guide 6. Click OK when finished. 7. Repeat steps 4 to 9 to add another RRU cabinet to the configuration. Defining Antenna Sector Setup For different Site Cell Configurations (SCC), the number of cells is related to antenna sectors. The number of TRXs is related to the number of RRUs (antenna systems). The RBS 2109 has two TRX/RRU. Example 1: For an RBS 2109 in a SCC = 1x4, define an RBS with two RRUs (two TRX/RRU) and then define one antenna sector with two antenna systems (RRUs). 1.
PAGE 31
RBS 2109 User’s Guide 7.6.4 Defining External Alarms This section describes how to define the external alarms, that is, customer-specific alarms, if applicable. See Site Installation Documentation. 1. On the Configuration menu, click Define and Alarm Inlets to open the Define Alarm Inlets window. 2. In the Alarm Inlet Information window, select a physically connected alarm inlet that needs to be defined. P010226A Figure 52 Defining Alarm Inlets 3. In the Inlet Usage box, select ‘‘External Alarm’’. 4.
PAGE 32
RBS 2109 User’s Guide This message will be displayed in the BSC/OMT if the alarm is issued. 8. Click Apply after defining the alarm. 9. Repeat steps 2 to 8 to define remaining alarms. 10. Click OK when all alarms are defined. Defining External Alarms for EBB and PBC The alarms for EBB and PBC should be defined according to the tables below.
PAGE 33
RBS 2109 User’s Guide EBB-06 Table 28 External Alarm Definitions for EBB-06 Alarm Inlet Inlet Usage Type 0/4 Breaking External Alarm Id (1) Severity Comment Level 2 Battery backup fault (1) Preferably, ID should be set to the same number as the corresponding alarm inlet.
PAGE 34
RBS 2109 User’s Guide 1. On the Configuration menu, click Define and Delay to open the Define Delay window. 2. Select the cable for which delay is to be defined, and click Run. 3. Enter the delay value (in ns) and click OK. 4. Repeat steps 2 and 3 for the remaining cables. 5. Click Close when finished. 7.6.7 Defining GPS Parameters This section describes how to define the GPS parameters. To be able to use GPS as a synchronisation source, the RBS must be equipped with a GPS receiver. 1.
PAGE 35
RBS 2109 User’s Guide 4. Repeat steps 2 to 3 for all applicable HW units. 5. Click Close when finished. 7.6.9 Defining Loss This section describes how to define the Total Feeder Attenuation. 1. On the Configuration menu, click Define and Loss to open the Define Loss window. 2. Select the appropriate feeder cable (for example, FEED_RXA 0) and click Run. 3. In the Define Loss window, enter the Total Feeder Attenuation from the test record for Antenna System Tests and click OK.
PAGE 36
RBS 2109 User’s Guide Table 30 PCM Parameter Settings for Transmission Interface E1, 75 PCM Parameter Settings Transmission Interface E1 Network Topology See Site Installation Documentation Sync Source See Site Installation Documentation CRC-4 See Site Installation Documentation Spare bits See Site Installation Documentation Receiver Sensitivity 7.6.
PAGE 37
RBS 2109 User’s Guide Note: Ports C and D can also be used as a multidrop pair. Far End RBS 1 A(C) B(D) RBS 2 A(C) B(D) RBS 3 A(C) B(D) P008428C Figure 53 System View for Transmission Interface E1, 120 1. Calculate the cable attenuation between the Far End and the RBS according to the following formula: Cable attenuation = cable length x cable attenuation per metre (or foot).
PAGE 38
RBS 2109 User’s Guide In this example, Far End and the RBS refer to the figure above The cable length between the RBS and the Far End is 150 m. The cable attenuation for the cable between the RBS and the Far End is 0.03 dB/m 1. 2. 3. 4. 5. Calculate the cable attenuation between the Far End and the RBS: 150 m x 0.03 dB/m = 4.5 dB Set Receiver Sensitivity A for the RBS to “Short haul”. Set Receiver Sensitivity C for the RBS to “Short haul” (not connected).
PAGE 39
RBS 2109 User’s Guide 2. If there is no information about the transmission interface type in the Site Installation Documentation, use the cable length to find the appropriate section in the table below. Table 33 Selecting Section for Defining T1, Cable Length Known If... then... the cable length is less than 655 feet go to Section Defining LBO Parameters as Short Haul on Page 120. the cable length is more than 655 feet and...
PAGE 40
RBS 2109 User’s Guide P010223A Figure 55 Defining Transmission Parameters 2. Set the parameters according to the table and instructions below. 3. Click OK when all parameters are set.
PAGE 41
RBS 2109 User’s Guide Customer Interface DSX-1 RBS 1 A(C) B(D) RBS 2 A(C) B(D) RBS 3 A(C) B(D) P008645B Figure 56 System View for Transmission Interface T1, Short Haul 1. Determine the length of the cable between the RBS and the customer interface (the cross-connection point DSX-1). See figure above. If multidrop is used, then calculate the attenuation of the entire RBS chain, since LBO A (C) is determined by the total attenuation of the chain.
PAGE 42
RBS 2109 User’s Guide In this example, customer interface (DSX-1), RBS 1 and RBS 2 refer to the figure above. RBS 1: The cable length between RBS 1 and the customer interface (DSX-1) is 200 feet (61 m). 1. Set LBO A for RBS 1 to “Short h., 133 – 266 feet”. See the table above Set LBO B for RBS 1 to “Short h., 0 – 133 feet”. Set LBO C and D (not connected) for RBS 1 to “Short h., 0 – 133 feet”. 2. 3.
PAGE 43
RBS 2109 User’s Guide P010223A Figure 59 Defining Transmission Parameters 2. Set the parameters according to the table and instructions below. 3. Click OK when all parameters are set. Table 37 Manual PCM Parameter Settings for Transmission Interface T1, Long Haul PCM Parameter Settings Transmission Interface DS1(T1) Network Topology See Site Installation Documentation. Sync Source See Site Installation Documentation.
PAGE 44
RBS 2109 User’s Guide Note: It is also possible to use ports C and D as a multidrop pair. 1. If the carrier advised code is given in the Site Installation Documentation, then use the table below to set the correct A (B, C, D) LBO parameters. If multidrop is used, then calculate the attenuation of the entire RBS chain, since LBO A (C) is determined by the total attenuation of the chain.
PAGE 45
RBS 2109 User’s Guide Example of a Manual LBO Parameters Calculation for Long Haul Network Interface RBS 1 RBS 2 RBS 3 ACBD ACBD ACBD Cable Carrier Advised Attenuation = Code= 5 dB -15 dB Cable Attenuation = 3 dB Cable Attenuation = 9 dB P010473A Figure 60 126 Calculating LBO Parameters Manually for Long Haul EN/LZT 720 0090 Uen R1A 2004-09-17
PAGE 46
RBS 2109 User’s Guide In this example, network interface, RBS 1, RBS 2 and RBS 3 refer to the figure above. RBS 1: Carrier advised code at the network interface is “C” (-15 dB) and the cable attenuation is 5 dB. 1. See the table Long haul parameters for different carrier advised codes at the network interface to find the correct LBO parameter for LBO A. 2. Set LBO A to “Long h., -15 dB”. 3. Set LBO B to “Long h., 0 dB”. 4. Set LBO C and D (not connected) to “Short h., 0 - 133 feet”.
PAGE 47
RBS 2109 User’s Guide RBS Customer Interface (Far End) Maximum input signal level A(C) B(D) Measured cable attenuation P008626B Figure 61 System Parameters for Defining LBO Parameters Automatically to Long Haul 1. On the Configuration menu, click Define and PCM to open the Define PCM window. See figure below. P010223A Figure 62 Defining Transmission Parameters 2. Use the table and instructions below to set the parameters. 3. Click OK when all parameters are set.
PAGE 48
RBS 2109 User’s Guide Table 40 PCM Parameter Settings for Transmission Interface T1, Long Haul Automatically PCM Parameter Setting Transmission Interface DS1(T1) Network Topology See Site Installation Documentation. Sync Source See Site Installation Documentation. LBO A See instructions below LBO B LBO C LBO D FDL Use See Site Installation Documentation. The instructions below describe how to set the PCM parameters automatically. For RBS 1 only: 1. Set LBO A (C) to ‘‘Long h.
PAGE 49
RBS 2109 User’s Guide P010477A Figure 63 Monitoring Cable Attenuation 6. Click on Start Monitor and read the value of the cable attenuation. The displayed value is given in deci dB (10 deci dB = 1 dB). Make a note of the value in the test record. When configuring the IDB for RBS 2 and RBS 3, follow the instructions below. For RBS 2 and RBS 3: 7. Set LBO A (C) on RBS 2 (RBS 3) to ‘‘Long h. ALBO, 0 dB’’. 8. On the Configuration menu, click Install IDB. 9. On the Maintenance menu, click Monitor. 10.
PAGE 50
RBS 2109 User’s Guide 11. Click on Start Monitor and read the value of the cable attenuation. The displayed value is given in deci dB (10 deci dB = 1 dB). Make a note of the value in the test record. 12. Add the measured cable attenuation values. The value given by Lin Att PCM A (C) is the cable attenuation to the previous RBS in the chain, so the measured value must be added to the value for the previous RBS(s) to obtain the total cable attenuation for the RBS in question. 13.
PAGE 51
RBS 2109 User’s Guide In this example, Far End, RBS 1, RBS 2 and RBS 3 refer to the figure above. Maximum input signal level at the Far End is -15 dB. The cable attenuation is not known. RBS 1: 1. Set LBO A to “Long h. ALBO, -15 dB”. The cable attenuation is measured by the RBS to 5 dB. 2. 3. 4. The value of LBO A is set automatically by the RBS. Set LBO B to “Long h., 0 dB”. Set LBO C and D (not connected) to “Short h., 0 - 133 feet”. RBS 2: 1. Set LBO A to “Long h. ALBO, 0 dB”.
PAGE 52
RBS 2109 User’s Guide Defining LBO Parameters when Transmission Characteristics are Unknown This section describes how to define the LBO parameters if none of the following parameters are known: carrier advised code, maximum input signal at the customer interface, cable attenuation or cable length. 1. On the Configuration menu, click Define and PCM to open the Define PCM window. See figure below. P010223A Figure 65 Defining Transmission Parameters 2. Set the parameters according to the table below. 3.
PAGE 53
RBS 2109 User’s Guide Table 42 PCM Parameter Settings for Transmission Interface T1, Transmission Characteristics Unknown PCM Parameter Settings LBO B ‘‘Long h., 0 dB’’, if used ‘‘Short h., 0 – 133 feet’’, if unused LBO C ‘‘Long h., 0 dB’’, if used ‘‘Short h., 0 – 133 feet’’, if unused LBO D ‘‘Long h., 0 dB’’, if used ‘‘Short h., 0 – 133 feet’’, if unused FDL Use 7.6.14 See Site Installation Documentation. Defining TEI This section describes how to define the TEI value for the IXU. 1.
PAGE 54
RBS 2109 User’s Guide Note: The RBS must be in Local Mode in order to accept a new or modified IDB. 1. Physically connect the OMT to the RBS if not already connected. See Section 7.6.1 Connecting OMT on page 108. 2. On the RBS 2000 menu, click Connect to connect the OMT logically to the RBS. 3. On the Configuration menu, click Install IDB. If the OMT detects inconsistencies between the RBS HW and the IDB, then the differences will be displayed in a window.
PAGE 55
RBS 2109 User’s Guide P010476A Figure 66 Reading Fault Status 3. In the Available monitors box, select ‘‘MO fault maps’’ and click → to add ‘‘RBS’’ into the Monitors to start box. 4. Click Start monitor. 5. In the RBS Event Monitor window, check the MO faults box to see if there are any faults. If there are, then correct these before continuing. When an MO fault is selected, corresponding fault description, action and related faults are displayed. See also Appendix Fault List. 6.
PAGE 56
RBS 2109 User’s Guide Note: The alarms must be individually identifiable in the OMT. There must be no doubt which alarm was indicated. The alarm message must be unique for each alarm. 1. On the Maintenance menu, click Monitor to open the Monitor window. See figure below. P010475A Figure 67 Testing External Alarms 2. In the Available monitors box, select ‘‘External Alarm Status’’ and click → to add ‘‘Alarm Inlets’’ in the Monitors to start box. 3. Click Start monitor. 4.
PAGE 57
RBS 2109 User’s Guide 6. Release the trigger on the alarm and check that the alarm disappears from the OMT. 7. Repeat steps 5 to 7 for all defined external alarms. 8. Close the RBS Event Monitor window when finished. 7.9 Performing Concluding Routines This section describes the actions to take before leaving the site and provides a site checklist. It also contains a test record. 7.9.1 Saving IDB In case it is necessary to re-install the IDB, the IDB parameters must be saved on the PC. 1.
PAGE 58
RBS 2109 User’s Guide Table 43 RRU and IXU Indicators After Site Installation Tests Without BSC Connection RBS in remote mode and no BSC connected RRU IXU Fault Off Fault Off Operational Off Operational Off Local Flashing Local Flashing RF off On RBS fault Off External alarm Off AC power on On DC power on On IXU temp. Off Transmission OK On/Off AC power on On DC power on On RRU temp. Off (1) (1) (1) (1) (2) (1) Depending on power system configuration.
PAGE 59
RBS 2109 User’s Guide 6. If RBS site integration is not performed immediately after site installation tests, then close the sunshields. 7.9.3 Completing Test Record This section contains a test record. It is recommended to fill in the test record during the testing procedure.
PAGE 60
RBS 2109 User’s Guide Test Record for Stand-alone Tests NE Commissioning Date Site Site No Cell RBS type Tester's Name NE STAND ALONE TEST GSM - Remark Antenna System Test Record Cable connections inspected Power supply verified Fan Unit Tested (If Applicable) IDB parameters set Fault status read External Alarms tested Notes: P010243C Figure 68 Test Record for Site Installation Tests EN/LZT 720 0090 Uen R1A 2004-09-17 141
PAGE 61
RBS 2109 User’s Guide 7.9.4 Filling in Checklist The following checklist is not mandatory but strongly recommended. Local procedures and safety regulations must be evaluated and included in this checklist. Table 45 Checklist Check the following: 142 OK 1 The indicators on the RRU and the IXU are in the approved status. 2 The test equipment has been disconnected from the RBS 3 The RBS cabinet and the mounting base are free from foreign objects. 4 All cabinets and cables are free of damage.
PAGE 62
RBS 2109 User’s Guide 8 RBS Site Integration This chapter describes how to integrate the RBS with the BSC into the GSM network, and the tests used to verify the integration. Integration is carried outwith the RBS connected to a PCM link and in close co-operation with a BSC operator. All results must be documented in the test record. Preconditions at the RBS Site This section describes the preconditions for personnel at the RBS site before integrating the RBS.
PAGE 63
RBS 2109 User’s Guide − BCCHNO parameters − DCHNO parameters − BSIC parameters − Time slots (TS) used for SDCCH Work Process for RBS Site Integration This section describes the order in which to perform the integration and tests. Each section should be completed and the results written in the test record before moving on to the next step in the process. See Figure below.
PAGE 64
RBS 2109 User’s Guide 1. Open the RRU, and the IXU cover. P010357B 2. Remove the PCM cable plug, starting with position A, and connect it to the Loop Back socket on the Loop forward/backward board. Loop forward/backward board P011267A 3. Request that the BSC operator checks the Digital Path on the active RBLT. 4. Remove the PCM cable plug from the Loop forward/backward board and reconnect it to the socket in the IXU. 5.
PAGE 65
RBS 2109 User’s Guide 7. 8.1.2 Enter Pass/Fail in the test record, see Section 8.4.2 Filling in the Test Record on page 152. Transmission Test on T1 This section describes how to test transmission, when the T1 transmission interface is used. Note: Transmission test on T1 can also be performed in the same way as E1, according to Section 8.1.1 on page 144. 1. Request that the BSC operator uses CSU functions. 2. Configure the RBS for CSU, using OMT, and restart the RBS.
PAGE 66
RBS 2109 User’s Guide The RBS now downloads and executes the commands previously prepared by the BSC operator. When the Local indicator turns off, the RBS is in remote mode. 5. Check that all RRUs are in Remote Mode by confirming that the Local indicator on each RRU is off. 6. If BTS PCM Supervision is used, then wait for the BSC operator to activate it and check that MO DP state is operational. 7. Wait for the BSC operator to activate and check the cell. 8.
PAGE 67
RBS 2109 User’s Guide TEMS Min 50 P010288A Figure 71 8.3.1 Distance From the Antenna System During Test Call Using TEMS Making Test Call Using TEMS This section describes how to make a test call using a TEMS and a PC with TEMS SW. The test confirms that all TSs on all TRXs work properly. The test record should be completed during the test. See Section 8.4.2 Filling in the Test Record on page 152. 1. Connect the TEMS cable between the TEMS and the PC COM port 1 on the PC containing TEMS SW. 2.
PAGE 68
RBS 2109 User’s Guide Table 46 Defining the External Connections Definition Port MS1 Port COM1 MS2 Port N/A Position Port N/A 4. In the Control menu, select Test of TCH. Enter the following parameters: • Telephone number • Frequency (ARCFN) • Broadcast Channel (BCCH) • Frequency for the Traffic Channel (TCH) 5. Select the TSs used for traffic and click on Add. The BCCH and SDCCH channels are used for signalling and do not carry traffic. Do not make test calls on these TSs.
PAGE 69
RBS 2109 User’s Guide 9. Request the BSC operator to block all TRXs except for the one being tested, and check that BCCH and SDCCH are configured. 10. Make a test call from the TEMS. 11. Request the BSC operator to check that the TCH being tested is busy. Verify the speech quality and write ‘‘Pass’’ or ‘‘Fail’’ in the test record. See Section 8.4.2 Filling in the Test Record on page 152. 12. Terminate the call. 13. Request the BSC to check that the tested TCH is released. 14.
PAGE 70
RBS 2109 User’s Guide 5. Monitor the signal strength (RxLev) and move through the cells to verify that handover takes place between cells at the cell borders. See figure below. TEMS P010289A Figure 72 Verifying that Handover Takes Place at the Cell Borders 6. Write ‘‘Pass’’ or ‘‘Fail’’ in the test record. See Section 8.4.2 Filling in the Test Record on page 152. 7. Terminate the call and stop the log. 8.
PAGE 71
RBS 2109 User’s Guide Table 47 RRU Indicators After Site Integration RRU Indicator State Fault Off Operational On Local Off RF off Off AC power on On (1) DC power on On (1) RRU temp. Off (1) Depending on power system configuration. Table 48 IXU Indicators After Site Integration IXU Indicator State Fault Off Operational On Local Off RBS fault Off External alarm Off AC power on On (1) DC power on On (1) IXU temp.
PAGE 72
RBS 2109 User’s Guide RBS Site Integration GSM - Date: Site Name: Site No.
PAGE 73
RBS 2109 User’s Guide 8.4.3 Filling in the Checklist This section describes the checklist to be filled in after the integration has been completed. The following checklist is not mandatory but it is strongly recommended. Local procedures and safety regulations must be evaluated and included in this checklist. Table 49 Checklist Check the following: 8.4.4 OK 1. The indicators on the RRU and the IXU are in the approved status. 2. The test equipment has been disconnected from the RBS. 3.
PAGE 74
RBS 2109 User’s Guide NETWORK ELEMENT ACCEPTANCE CERTIFICATE This is to certify that Ericsson AB has delivered, installed and tested the Network Element ............................................................ as defined in contract .................. The Network element acceptance has been performed in accordance with the procedures described in the above mentioned contract. Further reference should be made to the acceptance documents.
PAGE 75
RBS 2109 User’s Guide 156 EN/LZT 720 0090 Uen R1A 2004-09-17
PAGE 76
RBS 2109 User’s Guide 9 Maintenance This chapter describes the maintenance procedures for the RBS 2109. 9.1 Introduction 9.1.1 Target Group The target group for this document is maintenance personnel. To perform maintenance work in a safe and professional way, the work must be done by skilled personnel. The following qualifications are minimum requirements: 9.
PAGE 77
RBS 2109 User’s Guide Table 51 9.3 Connectors Connector Torque Nm Remark TNC 1.7 Nm +/- 0.15 Nm — N 2.7 Nm +/- 0.2 Nm — Fault Localisation Using OMT This section contains information on how to localise a fault when handling an alarm in the OMT. Ericsson recommends that the OMT is used, but if no OMT is available, or it is not possible to connect to the RBS, see Section 9.4 Troubleshooting Using the RBS Indicators on page 175.
PAGE 78
RBS 2109 User’s Guide For supplementary information about RU maps, see: Fault List Micro 9.3.1 EN/LZT 720 0466 Reading Fault Status This section describes how to read the fault status, using the OMT. If any fault indicator on the RBS is on, then the fault status must be read. Connect the OMT 1. Remove the lid from the OMT port on the IXU. 2. Connect the OMT cable from the PC serial port 1 to the OMT port on the right-hand side of the IXU.
PAGE 79
RBS 2109 User’s Guide P010476A Figure 76 Reading Fault Status 7. In the Available monitors box, select ‘‘MO fault maps’’ and click → to add ‘‘RBS’’ into the Monitors to start box. 8. Click Start monitor. 9. In the RBS Event Monitor window, check the MO faults box to see if there are any faults. If there are, then correct these before continuing. When an MO fault is selected, corresponding fault description, action and related faults are displayed. See also Fault List. 10.
PAGE 80
RBS 2109 User’s Guide Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, then proceed to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169. • If ‘‘SO CF RU:3/ Y link’’ appears in the OMT, then proceed with Section 9.3.3 SO CF RU:3/ Y Link on page 161. Displaying Fault Information Display fault information according to Section 9.3.
PAGE 81
RBS 2109 User’s Guide Perform the following actions step-by-step until the fault ceases: Checking IDB Configuration 1. In the OMT, ensure that the IDB is in accordance with the HW cabinet configuration. Checking RRU Power Perform the following actions step-by-step until the fault ceases, or until the RRU power is confirmed. Note: This is only valid for an RRU connected to the Y link-generated alarm. 2. Check that the indicators AC Power on/DC Power on on the RRU interface panel are ON. 3.
PAGE 82
RBS 2109 User’s Guide 1 2 6 5 3 Not used P010607A Figure 77 Table 52 Measuring Voltage on RRU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 Resetting RRU 6. Press the RRU reset button on the RRU interface panel connected to the faulty Y link Resetting IXU 7.
PAGE 83
RBS 2109 User’s Guide 8. Check that the Y link cable is correctly connected to both the IXU and the RRU 9. Check that the cable is free from damage 10. If the Y Link cable is damaged, replace it according to Section 9.5.10 Y Link Cable Replacement on page 215 Replacing the RRU 11. Replace the RRU, see Section 9.5.7 RRU Replacement on page 208 Replacing the IXU 12. Replace the IXU, see Section 9.5.3 IXU Replacement on page 195 9.3.
PAGE 84
RBS 2109 User’s Guide Resetting IXU 3. Press the IXU reset button on the IXU interface panel. Replacing IXU 4. Replace the IXU, see Section 9.5.3 IXU Replacement on page 195. 9.3.5 SO CF RU:14/ Battery This section describes how to localise an SO CF RU:14/ Battery fault. Related RUs • If ‘‘SO CF RU:31/ Environment’’ appears in the OMT, together with ‘‘SO CF EC2:10/ Mains fail (external power source fail)’’, then proceed with Section 9.3.7 SO CF RU:31/ Environment on page 167.
PAGE 85
RBS 2109 User’s Guide Related RU The RU listed below has higher priority than the RU described in this section. If it is present, go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159. Perform the following actions step-by-step until the fault ceases. Checking IDB Configuration 1.
PAGE 86
RBS 2109 User’s Guide FAN UNT-01 Fault Test Operational P010581A Figure 78 Fan Unit Test Button 5. Check that the test sequence below is carried out: • The fans run at maximum speed for approximately 5 seconds • The fans run at nominal speed for approximately 5 seconds • The fans stop for approximately 5 seconds 6.
PAGE 87
RBS 2109 User’s Guide Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159. Perform the following actions step-by-step until the fault ceases: Checking IDB Configuration 1. Check in the OMT that the IDB configuration is correct, according to the HW cabinet configuration, regarding defined power system and climate system. Checking Climate 2. Inspect the airflow path in the RBS, and ensure that the airflow is not obstructed. 3.
PAGE 88
RBS 2109 User’s Guide Checking Incoming DC Power (Optional) 5. Open the MBU cover and use a multimeter to check that the voltage, supplying the RBS, is between – 40.5 and – 57 V DC. If DC supply is not detected, then check the DC supply source. P010497A Figure 80 9.3.8 Measuring Incoming DC Voltage SO CF RU:34/ IDB This section describes how to localise an SO CF RU:34/ IDB. Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159.
PAGE 89
RBS 2109 User’s Guide 9.3.9 SO CF RU:40/ Antenna This section describes how to localise an SO CF RU:40/ Antenna fault. Related RU The RU listed below has higher priority than the RU described in this section. If it is present, then go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 Displaying Fault Information Display fault information according to Section 9.3.1 Reading Fault Status on page 159.
PAGE 90
RBS 2109 User’s Guide Performing DTF Test 10. Disconnect the faulty feeder and locate the fault, by performing a Distance To Fault (DTF) test. For more information, see chapter Antenna System Tests in this manual. 11. Replace the faulty equipment identified in the DTF test. Note: The RXBP are not included in the DTF test. 12. If no faulty equipment was identified, replace the antenna. 9.3.10 SO CF RU:48/ GPS Receiver This section describes how to localise an SO CF RU:48/ GPS Receiver.
PAGE 91
RBS 2109 User’s Guide Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, go to the related section before handling this RU. • If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section 9.3.8 SO CF RU:34/ IDB on page 169 • If ‘‘SO CF RU:0/ IXU’’ appears in the OMT, then proceed with Section 9.3.2 SO CF RU:0/ IXU on page 160 Displaying Fault Information Display fault information according to Section 9.3.
PAGE 92
RBS 2109 User’s Guide P011186A Figure 81 Cable Connection Check 48 V 48 V_RTN - 48 V LINK P010514A Figure 82 Connector Connection Check 7. Perform a cold reset on the GPS by disconnecting the termination block for a few seconds. 8. Check that both the – 48 V LINK cable and the conductor are free from damage. Replace if needed. 9. Check that the voltage is – 48 V DC, using a multimeter.
PAGE 93
RBS 2109 User’s Guide 2 mm P011187A Figure 83 9.3.12 Voltage Check SO TRXC RU:0/ RRU This section describes how to localise an SO TRXC RU:0/ RRU fault. Related RUs The RUs listed below have higher priority than the RU described in this section. If they are present, go to the related section before handling this RU. • If ‘‘SO CF RU:3/ Y link’’ appears in the OMT, then proceed with Section 9.3.
PAGE 94
RBS 2109 User’s Guide Resetting RRU 1. Press the RRU reset button on the RRU interface panel. Restarting RRU 2. Switch off the RRU, wait for one minute and switch it on again. Replacing RRU 3. Replace the RRU, see Section 9.5.7 RRU Replacement on page 208. 9.4 Troubleshooting Using the RBS Indicators This section describes troubleshooting procedures using the RBS indicators. If no faults are detected in the RBS, then the indicators should be in accordance with the tables below.
PAGE 95
RBS 2109 User’s Guide Table 55 IXU Indicator Status When the RBS is in Operation IXU temp. Off Transmission OK On (2) (1) Depending on power system configuration. (2) A, B, C and/or D, depending on transmission configuration. If the indicators indicate a fault, see the applicable Section below. 9.4.1 Corrective Actions for the IXU Fault If the fault indicator is ON (red), IXU HW fault(s) are detected.
PAGE 96
RBS 2109 User’s Guide If the Local indicator is flashing (yellow) and the anticipated BSC communication cannot be established, then perform the following actions step-by-step (in close cooperation with the BSC operator) until the fault ceases: • Reset the IXU • Ensure that the expected Transmission OK LEDs are ON Note: Transmission OK LEDs only indicate that the incoming transmission signal is present electrically. The physical transmission connection should still be checked.
PAGE 97
RBS 2109 User’s Guide 1. Start the OMT. 2. In the Maintenance menu, select Monitor. 3. Select External Alarms Status and click Start Monitor. 4. In the Available monitors box, select “MO fault maps” and click → to add “RBS” in the Monitors to start box. 5. Check the Display Status window to see which external alarms are active. 6. Check that the external alarm are correcly defined in the IDB 7. When the faults are corrected, close the Display Status window.
PAGE 98
RBS 2109 User’s Guide 1 6 2 5 3 Not used P010615A Figure 85 Table 56 Measuring AC Voltage on IXU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the IXU, see Section 9.5.
PAGE 99
RBS 2109 User’s Guide • Open the MBU cover and use a multimeter to check that the incoming voltage is between – 40.5 V DC and – 57 V DC P010497A Figure 86 • Measuring Incoming DC Voltage Disconnect the power cable from the IXU and use a multimeter to check that the voltage, supplying the IXU, is between – 40.
PAGE 100
RBS 2109 User’s Guide Table 57 Pins and Functions Connector Pin Function 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the IXU, see Section 9.5.
PAGE 101
RBS 2109 User’s Guide 9.4.2 • Swap the cable thread pairs • Perform a transmission test, see chapter RBS Site Integration • Check the transmission cable. If it is faulty, replace it • Replace the TIM, see Section 9.5.6 TIM Replacement on page 205. • Replace the IFB, see Section 9.5.2 IFB Replacement on page 191. Corrective Actions on the RRU Fault If the fault indicator is ON (red), an RRU HW fault(s) is detected.
PAGE 102
RBS 2109 User’s Guide • Ensure that the BSC has a correct configured A-bis path to the RBS [Digital Connection Point (DCP)]. • Reset the RRU • Ensure that the Y link cable is undamaged and properly connected to the correct ports, both on the RRU and the IXU • Check that each transmission line is connected to the correct ports in both the RRU and the IXU Note: The IXU could be able to establish BSC connection even if the transmission lines have been connected to the ports wrongly.
PAGE 103
RBS 2109 User’s Guide P010498A Figure 88 • Measuring Incoming AC Voltage Disconnect the power cable from the RRU and use a multimeter to check that the power supply to the RRU, is either 100 V AC to 127 V AC, or 200 V AC to 250 V AC, see table below.
PAGE 104
RBS 2109 User’s Guide Table 58 Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the RRU, see Section 9.5.
PAGE 105
RBS 2109 User’s Guide • Disconnect the power cable from the RRU and use a multimeter to check that the voltage, supplying the RRU, is between − 40.5 and − 57 V DC. See figure and table below. 1 2 6 5 3 Not used P010607A Figure 91 Table 59 Measuring the Voltage on RRU Power Cable Pins and Functions Connector Pin Function 1 DC_P 2 DC_N 3 PE 5 AC_L2 6 AC_L1 • Replace the PIB in the MBU, see Section 9.5.5 PIB Replacement on page 202 • Replace the RRU, see Section 9.5.
PAGE 106
RBS 2109 User’s Guide • Ensure that airflow is not obstructed above or below the RRU, or through its cooling flanges • Install a fan unit to the RRU • Install the RRU cabinet at a colder location If the RRU temp indicator is ON (yellow) and the conditions are cold, perform the following actions step-by-step until the fault ceases: Note: 9.5 The RRU will not start if it is too cold. It can take up to 75 minutes for the internal heater to warm up the RRU.
PAGE 107
RBS 2109 User’s Guide Taking the RBS Out of Operation 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take cells out of service. Wait until the RF off indicator (on all RRU interface panels) shows a continous light. 3 Press the Local/Remote button on the IXU to set the RBS to local mode. Wait until the local indicator on the IXU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
PAGE 108
RBS 2109 User’s Guide Replacing Flash Card 6 Disconnect the AC/DC cable and the earth cable from the IXU. P010569A 7 Disconnect the OMT cable. 8 Open the IXU cover. P010357B 9 Remove the connection frame and loosen the cables from the IFB. Remove the Y link cable(s).
PAGE 109
RBS 2109 User’s Guide Note: 10 Make a note of which connectors the Y link cables were connected to. Loosen the two securing screws under the IXU and remove the unit. P010365B 11 Remove the cover for the flash card. To remove the flash card, lift up the release lever and then push it in. P010366A 12 Note: 190 Insert the new flash card, reset the lever, then refit the cover. The flash card should be preloaded with the correct software and IDB. For instructions, see Chapter Site Installation Tests.
PAGE 110
RBS 2109 User’s Guide Taking the RBS Into Operation 17 Switch on the appropriate power supply: AC Mains, DC, or both AC and DC. 18 If new SW has earlier been prepared for loading, it now starts. This may take up to 10 minutes. 19 Close the RRU. 20 Inform the OMC operator that the applicable cells are to be taken into service. 21 Press the Local/Remote button on the IXU, and the RRUs to set the RBS to remote mode.
PAGE 111
RBS 2109 User’s Guide 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off AC Mains power and DC power supply.
PAGE 112
RBS 2109 User’s Guide Replacing IFB 6 Open the IXU cover. P010357B 7 Remove the connection frame and all cables from the IFB. P010358A 8 Loosen, but do not remove, the Y link cable(s) from the cable inlet.
PAGE 113
RBS 2109 User’s Guide 9 Remove the TIM after loosening the three screws. (x 3) P010374B 10 Remove the IFB after loosening the seven screws. P010360A 11 Put back the new IFB, the connection frame, and all cables. 12 Put back the TIM. Tighten the screws to 1.7 Nm. 13 Secure the Y link cable(s). 14 Reconnect the IXU cover. Taking the RBS Into Operation 194 15 Switch on the appropriate power supply: AC Mains, DC, or both AC and DC. 16 Close the RRU.
PAGE 114
RBS 2109 User’s Guide Handling Replaced Units Unless under contractual warranty, after replacement, the IFB should be disposed of locally by the customer according to environmental regulations. Do not return the IFB to Ericsson for replacement, repair or disposal. 9.5.3 IXU Replacement This section describes how to replace a faulty IXU. Taking the RBS Out of Operation 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take cells out of service.
PAGE 115
RBS 2109 User’s Guide 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off AC Mains power and DC power supply. AC DC P010517A Replacing IXU 6 Disconnect the AC/DC cable and the earth cable. P010569A 7 196 Remove the OMT cable.
PAGE 116
RBS 2109 User’s Guide 8 Open the IXU cover. P010357B 9 Remove the connection frame and loosen the cables from the IFB. Remove the Y link cable(s). P010363A Note: Make a note of which connectors the Y link cables were connected to.
PAGE 117
RBS 2109 User’s Guide 10 Loosen the two securing screws under the IXU, and remove the unit. P010365B 11 Remove the TIM from the faulty IXU after loosening the three securing screws. P010367A 12 Remove the cover for the flash card. To remove the flash card, lift up the release lever and then push it in.
PAGE 118
RBS 2109 User’s Guide 13 Remove the cover for the flash card. Insert the old flash card in the new unit and push it down and reset the release lever, ensuring that the flash card is in position. 14 Open the cover of the new IXU and insert the TIM. Tighten the screws to 1.7 Nm. Note: Ensure that the switch positions on the TIM are correct. 15 Mount the connection frame delivered with the new IXU into the old IXU, and close the cover. 16 Mount the IXU and secure it with the two screws under the IXU.
PAGE 119
RBS 2109 User’s Guide Caution! Rotating fan blades can cause injury to body parts that come into contact with the blades. Blades in fan units continue to rotate for a period of time, even after the fan has been switched off. Wait until fans have stopped rotating completely before starting work on or near fans. Replacing Fan Unit 1 Remove the fan unit cover P011263A 2 Disconnect the fan power cable from the RRU. P010543B 3 Loosen the three screws and remove the fan unit.
PAGE 120
RBS 2109 User’s Guide 4 Install the new fan unit and fasten the three screws. P010496A 5 Connect the fan power cable to the RRU. P010543A Testing Fan Unit 6 Press the Test button on the fan unit.
PAGE 121
RBS 2109 User’s Guide The fan unit performs a self test 7 Check that the test sequence below is carried out: • The fans run at maximum speed for approximately 5 seconds • The fans run at nominal speed for approximately 5 seconds • The fans stop for approximately 5 seconds 8 Ensure that the indicator status of the fan unit is in accordance with the table below: Table 60 Fan Unit Indicators After Test Fan Unit Indicator Status Fault Off Operational On 7. Reinstall the fan unit cover.
PAGE 122
RBS 2109 User’s Guide 3 Press the Local/Remote button on the IXU to set the RBS to local mode. If it is an extension cabinet, press the Local/Remote button on the RRU to set the unit to local mode. 4 Switch off the AC and DC switches on the MBU. 5 Switch off the AC Mains power and DC power supply outside the cabinet. Replacing PIB 6 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 7 Remove the MBU cover.
PAGE 123
RBS 2109 User’s Guide 8 Disconnect the upper AC/DC cables and the applicable power cable at the bottom. P010372A 9 Remove the PIB after loosening the securing screws. (x8) P010373B Note: 10 Insert the new PIB and secure it. 11 Ensure that the ground selector swicth is in the correct position. Note: 204 Be careful not to drop the washer attached behind the lower left screw when loosening it. Remember to insert the washer behind the lower left screw. 12 Reconnect the upper AC/DC cables.
PAGE 124
RBS 2109 User’s Guide 16 Switch on the AC and DC switches. 17 Close the RRU. Taking the RBS Into Operation 18 Switch on the AC Mains power and DC power supply outside the cabinet. 19 Inform the OMC operator that the applicable TRXs are to be taken into service. 20 Press the Local/Remote button on the IXU to set the units to remote mode. If it is an extension cabinet, press the Local/Remote button on the RRU to set the unit to remote mode.
PAGE 125
RBS 2109 User’s Guide 3 Press the Local/Remote button on the IXU to set the RBS to local mode. Wait until the local indicator on the IXU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches. P010396A 5 Switch off the AC Mains power and DC power supply.
PAGE 126
RBS 2109 User’s Guide Replacing TIM 6 Open the IXU cover. P010357B 7 Remove the TIM after loosening the three screws securing it.
PAGE 127
RBS 2109 User’s Guide 8 Mount the new TIM and ensure that the switches are set correctly. Tighten the screws to 1.7 Nm. TIM Port A Port C 100/ 120 75 100/ 75 120 Port A Port B Port D 100/ 120 75 100/ 75 120 Port C 100/ 75 100/ 75 120 120 Port B Port D 100/ 100/ 120 75 120 75 P010154D 9 Close the IXU cover Taking the RBS Into Operation 10 Switch on the AC and DC switches. 11 Close the RRU. 12 Inform the OMC operator that the applicable cells are to be taken into service.
PAGE 128
RBS 2109 User’s Guide Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
PAGE 129
RBS 2109 User’s Guide 5 Switch off the RRU power. RRU P010369A 6 Remove any optional units mounted on the RRU, and, if applicable, the upper sunshield. Replacing RRU 7 Disconnect the earth cable P010518A 8 Remove the protection cover.
PAGE 130
RBS 2109 User’s Guide 9 Remove the cables belonging to the RXBP (if present) from the RRU. Remove the RXBP after loosening the securing screws. RXBP RX 2 RX 1 RXBP 2 RXBP1 P010376A 10 Disconnect the Y link cable and the AC/DC cable from the RRU.
PAGE 131
RBS 2109 User’s Guide 11 Loosen the screw under the RRU and unhook the RRU. P010378B 12 Hang the new RRU onto the upper hinge. Position the lower hinge and tighten the screw. 13 Connect the earth cable, AC/DC cable and Y link cable. 14 Mount the RXBP (if required) and connect all cables. 15 Fit the protection cover under the RRU. Taking the RRU Into Service 16 Switch on the RRU power and close the RRU. 17 Put back the sunshield and fan unit, if present.
PAGE 132
RBS 2109 User’s Guide 9.5.8 RXBP Replacement This section describes how to replace a faulty RXBP. Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light.
PAGE 133
RBS 2109 User’s Guide Taking the RRU Into Service 6 Inform the OMC operator that the TRXs connected to the RRU are to be taken into service. 7 Press the Local/Remote button on the RRU to set the unit to remote mode. Wait until the RF off indicator on the RRU interface panel extinguishes and the Operational indicator illuminates. 8 Close the sunshields.
PAGE 134
RBS 2109 User’s Guide 3 If a fan unit is used, then install the fan unit cover on top of the RRU, see Figure below. P010515A 4 Attach the front sunshield to the left sunshield. 5 Close the front sunshield and attach it to the top shield (fan unit cover) and to the right sunshield. 6 Lock the shield. Handling Replaced Units Unless under contractual warranty, after replacement, the sunshield should be disposed of locally by the customer according to environmental regulations.
PAGE 135
RBS 2109 User’s Guide Taking the RRU Out of Service 1 Open the sunshields. 2 Contact the OMC operator to obtain permission to temporarily take the TRXs connected to the RRU out of service. Wait until the RF off indicator shows a continous light. 3 Press the Local/Remote button on the RRU to set the unit to local mode. Wait until the local indicator on the RRU shows a continous light. 4 Open the two clasps and pull the RRU to the left side, to gain access to the power switches.
PAGE 136
RBS 2109 User’s Guide Replacing Y Link Cable 6 Open the IXU cover. P010357B 7 Remove the faulty Y link cable from the IXU. Remove the cable from the RRU by opening the Y link cover and disconnecting it. RRU IXU P010379A 8 Connect the new Y link cable to the RRU and close the cover. 9 Connect the new Y link cable to the IXU and close the cover. 10 Switch on the RRU power and close the RRU. Taking the RRU Into Service 11 Inform the OMC operator that the RRU is to be taken into service.
PAGE 137
RBS 2109 User’s Guide 9.5.11 Performing Concluding Routines This section describes the routines to be completed before leaving the site. Note: Ericsson strongly advises that when cleaning up after maintenance work on the RBS cabinet, the personnel performing maintenance pay particular attention to the environment. Recycle all waste materials that can be recycled and sort waste so that it can be disposed of according to local regulations.
PAGE 138
RBS 2109 User’s Guide Check that the indicators on the RRU(s) and the IXU have the status shown in the tables below: Table 62 RRU Indicators After Maintenance RRU Indicator State Fault Off Operational On Local Off RF off Off AC power on On (1) DC power on On (1) RRU temp. Off (1) Depending on power system configuration.
PAGE 139
RBS 2109 User’s Guide Table 64 Checklist Check the following: 220 OK 1 The indicators on the RRU and the IXU are in the approved status. 2 The test equipment has been disconnected from the RBS 3 The RBS cabinet and the mounting base are free from foreign objects. 4 All cabinets and cables are free of damage. 5 All EMC sealants and cable penetrations are intact. 6 Top and bottom of cabinet are free of obstructions (for airflow).
PAGE 140
RBS 2109 User’s Guide 10 Glossary This glossary lists abbreviations and acronyms used in texts dealing with RBS 2000 cabinets. Some basic terms and acronyms needed for cross-reference are included in the list. Terms and Abbreviations An arrow ⇒ is used to indicate a reference to another entry in the list.
PAGE 141
RBS 2109 User’s Guide AMR Adaptive Multi-Rate AO Application Object ARAE Antenna Related Auxiliary Equipment ARFCN Absolute Radio Frequency Channel Number ARP Antenna Reference Point ARU Active Replaceable Unit ASIC Application Specific Integrated Circuit ASU Antenna Sharing Unit AT Alphanumeric Terminal ATRU Adaptive Transceiver Unit ATSR Air Time Slot Resource AU Antenna Unit AWG American Wire Gauge BALUN BALance and UNbalance transformer Batt Battery BB Battery Box BBS B
PAGE 142
RBS 2109 User’s Guide Bias injector A unit which injects DC power into the coaxial cable to feed the TMA. Isolates the DC power from the RF signal fed to the CDU. Bm Denotes a full-rate traffic channel BPC Basic Physical Channel Denotes the air interface transport vehicle formed by repetition of one time slot on one or more radio frequency channels. BS Base Station BSC Base Station Controller GSM network node for control of one or more BTSs.
PAGE 143
RBS 2109 User’s Guide • AGCH Access Grant CHannel CCU Climate Control Unit CDU Combining and Distribution Unit CE Conformité Européenne cell An area of radio coverage identified by the GSM network by means of the cell identity. CEU Coverage Extension Unit CF Central Functions channel The common term channel denotes the virtual connection, consisting of physical and logical channels, between BSS and MS, during a call in progress.
PAGE 144
RBS 2109 User’s Guide Ericsson digital land mobile telecommunication system based on the Joint Technical Committee (JTC) specification for PCS 1900. CNU Combining Network Unit Compr Compressor CON LAPD concentrator LAPD concentration is used to reduce the number of required physical links between the BSC and BTS. Config Configuration Co-siting Co-siting is the operation of radio equipment from more than one mobile telephone system and/or frequency on the same site sharing common equipment.
PAGE 145
RBS 2109 User’s Guide DCCU DC Connection Unit ddTMA dual duplex Tower Mounted Amplifier DF Distribution Frame DF Disturbance Frequency DFU Distribution and Fuse Unit DIP DIgital Path The name of the function used for supervision of the connected PCM lines. DM Degraded Minute DM Distribution Module DMRU Distributed Main Replaceable Unit If a Main RU is subordinated to the CMRU, it is said to be distributed. 226 downlink Signalling direction from the system to the MS.
PAGE 146
RBS 2109 User’s Guide DXC Digital Cross Connector DXU Distribution Switch Unit DXX Ericsson Cellular Transmission System including NMS E1 Transmission standard, G.
PAGE 147
RBS 2109 User’s Guide ESO Ericsson Support Office ETS European Telecommunication Standard ETSI European Telecommunication Standard Institute. EXT External FACCH Fast Associated Control CHannel Main signalling channel in association with a TCH.
PAGE 148
RBS 2109 User’s Guide GSL GPRS Signalling Link GSM Global System for Mobile communications International standard for a TDMA digital mobile communication system. Originally, GSM was an abbreviation for Group Special Mobile, which is a European mobile telecommunication interest group, established in 1982.
PAGE 149
RBS 2109 User’s Guide I1B Internal Fault Map Class 1B I2A Internal Fault Map Class 2A IA Immediate Assignment IC Integrated Circuit ICMI Initial Codec Mode Indicator ID Identity IDB Installation DataBase IDM Internal Distribution Module IEC International Electric Commission IFB Interface Board IF Box Interface Box IMSI International Mobile Subscriber Identity INIT Initial INT Internal IOG Input/Output Group IOM Internal Operation and Maintenance bus IR InfraRed IS Interfa
PAGE 150
RBS 2109 User’s Guide LBO Line Build Out LED Light Emitting Diode LLB Line Loop Back LNA Low Noise Amplifier Local bus The local bus offers communication between a central main RU (DXU) and distributed main RUs (TRU and ECU). Local mode When the RU is in Local mode, it is not communicating with the BSC. Local/Remote switch A switch used by the operator to order the RU to enter Local or Remote mode.
PAGE 151
RBS 2109 User’s Guide MCB MultiCasting Box MHS Modification Handling System Ericsson trouble report database MiniLink Ericsson’s microwave transmission system. MMI Man-Machine Interface MO Managed Object MR Measurement Receiver MRT Mean Repair Time MS Mobile Station MSC Mobile services Switching Centre GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network (PSTN) and other networks.
PAGE 152
RBS 2109 User’s Guide General term for activities such as configuration, utilization of channels (frequency bands), cell planning, system supervision, hardware and software maintenance, subscriber administration, and so on. OMC Operation and Maintenance Centre OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis. OMT Operation and Maintenance Terminal The OMT is a PC application for O&M of an RBS.
PAGE 153
RBS 2109 User’s Guide PCU Packet Control Unit PDCH Packet Data Channel PE terminal Protective Earth terminal in an AC mains connection PFWD Power Forward Physical Channel An air interface physical channel carries one or more logical channels. A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots.
PAGE 154
RBS 2109 User’s Guide RAM Random Access Memory RBER Radio Bit Error Ratio RBS Radio Base Station All equipment forming one or more Ericsson base station. ⇒ BTS RCB Radio Connection Box RD Receive Data Remote mode When the RU is in RU Remote mode, a link is established between the BSC and the Central Main RU (CMRU). RF Radio Frequency RFCH Radio Frequency CHannel A radio frequency carrier with its associated bandwidth.
PAGE 155
RBS 2109 User’s Guide RX2 Receiver antenna branch 2 RXA Receiver antenna branch A RXB Receiver antenna branch B RXBP Receiver BandPass filter RXD Receiver Divider RXDA Receiver Divider Amplifier RXDP Receiver Distribution Plane RXLEV Measure of signal strength as defined in GSM:05.08:8.1.4 RXQUAL Measure of signal quality as defined in GSM:05.08:8.2.
PAGE 156
RBS 2109 User’s Guide SS Swedish Standard sTRU single Transceiver Unit Sub-RU A sub-replaceable unit is always connected to a superior Main RU. This connection is used for example for retrieval of the RU identity. A sub-RU normally does not have a processor. Note that an RU with a processor, which cannot be loaded, is classified as a sub-RU. SVS System Voltage Sensor SW SoftWare SWR Standing Wave Ratio SYNC Synchronous T1 Transmission standard, G.
PAGE 157
RBS 2109 User’s Guide TEI Terminal Endpoint Identifier TEI is an identification code carried by a LAPD frame as a terminal connection endpoint within a Service Access Point (SAP). TEMS TEst Mobile Station TF Timing Function TG Transceiver Group TIM Transmission Interface Module Timing bus The timing bus carries air timing information from the timing unit in the DXU to the TRUs.
PAGE 158
RBS 2109 User’s Guide ⇒ Burst TT Total Time TU Timing Unit TX Transmitter TXA Transmitter Antenna A TXB Transmitter Antenna B TXBP Transmitter BandPass filter TXU Radio Transmitter Unit UAS Unavailable Seconds UAST UnAvailable STate supervision UL Underwriter Laboratories uplink Signalling direction from the MS to the system. UPS Uninterrupted Power Supply VCO Voltage Controlled Oscillator VSWR Voltage Standing Wave Ratio RF signal measure.