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ADCP-75-130 • Issue 3C • August 2006

Page 41

5 SYSTEM OPERATION

This section provides guidelines for turning-up the Digivance ICS, verifying that all units are

operating properly, testing to ensure that all performance requirements are satisfied, and

correcting any installation problems. This process assumes that the various units that comprise

the Digivance ICS have been installed in accordance with the system design plan and the BTS

interface unit (HPCP or RIU) has been installed and tested. The procedures for installing and

testing the HPCP or RIU are provided in the user manual that is shipped with the unit.

5.1 Tools and Materials

The following tools and materials are required in order to complete the procedures in this

section:

• Portable spectrum analyzer

• Portable test transmitter

• Cell phone

• Pencil or pen

• Writing pad

5.2 Turn-Up System and Verify Operation

The process of turning-up the system and verifying operation involves powering up the

various system components and then verifying that the LED indicators show normal

operation. Refer to Tables 8, 9, and 10 as needed for a complete description of the unit LED

indicators. Use the following procedure to power-up the system. If any unit does not respond

as described, refer to Subsection 5.4 for the correction procedures.

1. Temporarily disconnect the alarm system or notify alarm system provider that testing is

in progress.

2. Verify that each AC powered unit is connected to the appropriate outlet.

3. Place the ON/OFF switch on the DHU in the ON position (press I).

4. Verify that the UNIT LED and the OVERDRIVE LED on the DHU turn yellow (for

approximately 6 seconds) and then green.

5. If DHU will be connected to an ancillary interface device, adjust the level of the RF

input and output signals at the DHU and complete all remaining coaxial cable

connections as described in Section 5.3.

6. Place the PORT 1 ON/OFF switch on the DHU in the ON position (press I).

7. If a DEU is connected to port 1, proceed to step 8. If a DRU is connected to port 1, skip

steps 8 and 9 and proceed to step 10.

8. Place the ON/OFF switch on the DEU in the ON position (press I).

9. Verify that the UNIT LED on the DEU turns yellow (for approximately 6 seconds) and

then green.

Summary of content (28 pages)

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ADCP-75-130 • Issue 3C • August 2006 5 SYSTEM OPERATION This section provides guidelines for turning-up the Digivance ICS, verifying that all units are operating properly, testing to ensure that all performance requirements are satisfied, and correcting any installation problems. This process assumes that the various units that comprise the Digivance ICS have been installed in accordance with the system design plan and the BTS interface unit (HPCP or RIU) has been installed and tested.
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ADCP-75-130 • Issue 3C • August 2006 10. Verify that the PORT 1 OK/NOK LED on the DHU turns yellow (for approximately 6 seconds) and then green. 11. If a DEU is connected to PORT 1, proceed to step 12. If a DRU is connected to PORT 1, skip steps 12 through 14 and proceed to step 15. 12. Verify that the HOST PORT LED on the DEU turns green. 13. Place the PORT 1 ON/OFF switch on the DEU in the ON position (press I). 14.
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ADCP-75-130 • Issue 3C • August 2006 Table 9. Digital Expansion Unit LED Indicators INDICATOR UNIT LED COLOR Green Yellow Red Off HOST PORT LED Green Red (blinking) Off PORT 1–6 OK/NOK LEDs Green Yellow Red (steady) Red (blinking) DESCRIPTION Indicates when the DEU is normal or faulty. DEU in normal state, no faults detected. DEU high temperature fault detected. (see Note) DEU internal fault detected. (see Note) AC power off to DEU or DEU internal fault.
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ADCP-75-130 • Issue 3C • August 2006 5.3 RF Input and Output Signal Level Adjustments The DHU may be connected to either a donor antenna or a base transceiver station through an ancillary interface device. The following sections provide general guidelines for using the interface device to adjust the forward and reverse path signals to the correct level. 5.3.
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ADCP-75-130 • Issue 3C • August 2006 Caution: Do not supply the DHU with an RF input signal that is 0 dBm or greater or the system could be damaged. 11. Continue to increase the forward path RF signal level until the DHU overdrive LED just begins to turn red. 12. Reduce the level of the RF input signal by 1 dB and then verify that the DHU Overdrive LED stays green. 5.3.
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ADCP-75-130 • Issue 3C • August 2006 3. Check and record the Received Signal Strength Indication (RSSI) and any spurious emission levels at and between all DRU antennas. Analyze all DRU’s and the DHU interface using a spectrum analyzer. 4. Plot the RSSI levels on a floor plan of the building and check against the pre-installation RSSI levels to determine the overall and average RSSI improvement attributed to the Digivance ICS. Check the entire Digivance coverage area. 5.
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ADCP-75-130 • Issue 3C • August 2006 6 SYSTEM MAINTENANCE PROCEDURES This section explains the alarm reporting system, provides a method for isolating and troubleshooting faults, and provides procedures for replacing the modular transceivers and the DHU or DEU cooling fans. The Digivance ICS requires no regular maintenance to insure continuous and satisfactory operation. Maintenance, as it applies to the Digivance ICS, primarily involves diagnosing and correcting service problems as they occur.
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ADCP-75-130 • Issue 3C • August 2006 6.3 Fault Isolation and Troubleshooting Fault isolation and troubleshooting guidelines are provided in Tables 11, 12, 13, and 14. When an alarm is reported, determine the type of alarm generated (minor or major) and then check the LED indicators on the DHU and note any that are red, yellow, or off.
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ADCP-75-130 • Issue 3C • August 2006 Table 11. DHU Fault Isolation and Troubleshooting Guidelines (Continued) Alarm Type LED LED COLOR Major OVERDRIVE Red Problem: Forward path RF input level too high. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Incorrect attenuation in forward path RF coaxial link. 1. Adjust attenuation at RIU or LIU. Alarm Type LED LED COLOR Minor OK/NOK Yellow Problem: The DHU is receiving a minor alarm signal from the DEU. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1.
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ADCP-75-130 • Issue 3C • August 2006 Table 12. DEU Fault Isolation and Troubleshooting Guidelines Alarm Type LED LED COLOR Minor UNIT Yellow Problem : The DEU is overheating. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Air intake or exhaust openings to DEU chassis blocked. 2. Ambient temperature > 50º C/122º F. 3. Faulty fan. 1. Remove cause of air-flow blockage. 2. Reduce ambient temperature. 3. Replace fan (see Subsection 6.5).
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ADCP-75-130 • Issue 3C • August 2006 Table 12. DEU Fault Isolation and Troubleshooting Guidelines (Continued) Alarm Type LED LED COLOR Major OK/NOK Red Problem: The DEU is receiving a major alarm signal from the connected DRU. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. Faulty forward path optical fiber between DEU and DRU. 2. Faulty optical transmit port at DEU or faulty optical receive port at DRU. 1. Clean optical connector and then test optical fiber.
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ADCP-75-130 • Issue 3C • August 2006 Table 14. System Fault Isolation and Troubleshooting Guidelines Alarm Type LED LED COLOR None All Normal Problem: Loss of phone service from one DRU. Service normal at all other DRU’s. POSSIBLE CAUSE CORRECTIVE ACTION/COMMENTS 1. DRU antenna cable disconnected. 2. DRU antenna obstructed or misdirected. 3. DRU antenna faulty. 4. DRU faulty. 1. Re-connect DRU antenna cable to DRU. 2. Remove antenna obstruction or re-orient antenna. 3. Replace antenna. 4.
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ADCP-75-130 • Issue 3C • August 2006 6.4 Test Procedures 6.4.1 Optical Loopback Test Procedure Dirty optical connectors, a faulty optical transceiver, a break in an optical fiber, or a fault in an optical connector will interrupt communications between fiber-linked components. Use the following procedure to determine if a fault exists with an optical port or with an optical fiber: Danger: This equipment uses a Class 1 Laser according to FDA/CDRH rules.
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ADCP-75-130 • Issue 3C • August 2006 6. The PORT OK/NOK LED will turn either blinking red or green. If the LED turns blinking red, the optical port is faulty. Replace the optical transceiver and then recheck system operation. If the LED turns green, the optical port is good. Proceed to step 7 to continue the test procedure. 7. Place the PORT ON/OFF switch in the OFF position (press O). 8. Disconnect the loopback from the DHU or supporting DEU. 9.
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ADCP-75-130 • Issue 3C • August 2006 OPTICAL LOOPBACK CONNECTION DETAIL 17282-A OPTICAL TRANSCEIVER OPTICAL LOOPBACK Figure 27. DRU Loopback Test 21. The DRU STATUS LED or DEU HOST LED will turn either blinking red or green. If the LED turns blinking red, the optical port is faulty and the optical transceiver must be replaced. If the LED turns green, the optical port is good. 22. At the DHU or supporting DEU, place the PORT ON/OFF switch in the OFF position (press O). 23.
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ADCP-75-130 • Issue 3C • August 2006 3. Disconnect the optical connectors at the DHU or supporting DEU and at the corresponding DRU or remote DEU. 4. Inspect the optical connectors. Verify that each connector is clean and that no scratches or imperfections are visible on the fiber end. Clean and polish the optical connector if necessary. 5. Connect a laser light source to one end of the first optical fiber and an optical power meter to the other end. 6.
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ADCP-75-130 • Issue 3C • August 2006 3. Connect the DC power cable to the RJ-45 circuit access tool (see Figure 28). 4. Using a DC voltmeter, verify that the DC voltage level is between 34 and 48 VDC between any set of positive and negative (+/-) terminals at the RJ-45 circuit access tool as shown in Figure 29. Due to source current limiting at the DHU or DEU, low voltage can mean excess wire resistance, low source voltage, or excess remote current. Warning: The DRU uses 48 VDC power.
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ADCP-75-130 • Issue 3C • August 2006 3. Notify the NOC or alarm monitoring system operator that the system is going offline. 4. Place the DHU or DEU AC power On/Off switch (see Figure 3 or Figure 7) in the OFF position (press O). 5. Remove the six flat-head screws (requires TORX screwdriver with T15 bit) that secure the fan/grill assembly to the side of the enclosure as shown in Figure 30 and save for reuse. 16172-B Figure 30. Fan/Grill Assembly Removal 6.
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ADCP-75-130 • Issue 3C • August 2006 16173-B Figure 31. Removing Fan From Grill 13. Place the DHU or DEU AC power On/Off switch in the ON position (press I). 14. Verify that the fans run properly following power up. 15. Notify the NOC or alarm monitoring system operator that the system is going back online. 6.6 DHU or DEU Modular Optical Transceiver Replacement Procedure The modular optical transceiver should be replaced when testing indicates that the transceiver has failed.
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ADCP-75-130 • Issue 3C • August 2006 Note: The HOST PORT on the DEU does not have an On/Off switch and can only be disabled by placing the DEU AC power On/Off switch in the OFF position (press O). Turning off the power to the DEU will create an alarm condition. If the DEU must be turned off, inform the NOC or alarm monitoring system operator that an alarm will be reported. 4. Disconnect the optical fiber connectors from the optical transceiver and place a dust cap over each connector. 5.
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ADCP-75-130 • Issue 3C • August 2006 RELEASE LEVER TX RX TYPE A TRANSCEIVER TYPE B TRANSCEIVER 17280-A RELEASE TAB TX DETAIL DRAWING OF TYPE A AND TYPE B MODULAR OPTICAL TRANSCEIVERS RX Figure 33. DHU or DEU Optical Transceiver Installation 9. Insert the optical transceiver into the socket until it locks into place. 10. Clean the optical fiber connectors and reconnect to the optical transceiver. 11.
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ADCP-75-130 • Issue 3C • August 2006 3. Disconnect the DC power cable connector from the RJ-45 power jack on the DRU front panel. Note: Disconnecting the power from the DRU will create an alarm condition. Inform the NOC or alarm monitoring system operator that the alarm will be reported. 4. Disconnect the optical fiber connectors from the optical transceiver and place a dust cap over each connector. 5.
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ADCP-75-130 • Issue 3C • August 2006 RELEASE LEVER TX RX TYPE A TRANSCEIVER TYPE B TRANSCEIVER 17286-A RELEASE TAB TX DETAIL DRAWING OF TYPE A AND TYPE B MODULAR OPTICAL TRANSCEIVERS RX Figure 35. DRU Optical Transceiver Installation 9. Insert the optical transceiver into the socket until it locks into place. 10. Clean the optical fiber connectors and reconnect to the optical transceiver. 11.
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ADCP-75-130 • Issue 3C • August 2006 7 GENERAL INFORMATION 7.1 Warranty/Software The Product and Software warranty policy and warranty period for all ADC products is published in ADC’s Warranty/Software Handbook. Contact the Technical Assistance Center at 1-800-366-3891, extension 73476 (in U.S.A. or Canada) or 952-917-3476 (outside U.S.A. and Canada) for warranty or software information or for a copy of the Warranty/Software Handbook. 7.
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ADCP-75-130 • Issue 3C • August 2006 7.4 Repair Charges If the defect and the necessary repairs are covered by the warranty, and the applicable warranty period has not expired, the Buyer’s only payment obligation is to pay the shipping cost to return the defective Product. ADC will repair or replace the Product at no charge and pay the return shipping charges. Otherwise, ADC will charge a percentage of the current Customer Product price for the repair or NTF (No Trouble Found).
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ADCP-75-130 • Issue 3C • August 2006 7.7 Customer Information and Assistance PHONE: U.S.A.
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