11-12
DRU tests
411-2051-500
Draft
00.01
November 1999
DRU transmit tests
This section describes the transmit tests that can be performed on the
DualMode Radio Unit (DRU). RF output power tests are described in the
DRU RF output power test section.
Note: The tests can be performed separately but the DRU transmit test
setup procedure must be performed before each individual test.
Service impacts
Directly testing the TRU through the antenna port of the duplexer will put the
entire cell/sector out of service.
Indirectly testing the TRU through the sniffer port of the duplexer will affect
only the TRU under test. However, the measurement may not be as accurate
because the level is approximately 50 dB down with a tolerance of up to
±
5
dB.
Transmit test setup procedure
1. At the MTX, busy and off-line the TRU under test and the TRUs
connected to the same MCPA shelf.
Note: The service supported by the MCPA shelf will be affected.
2. Connect the interface terminal to the RS-232 port on the front panel of the
TRU under test. Verify that the DRU configurations for TX tests initial
setup are as listed in Table 11-1.
Note: Ensure that all the TRUs connected to the MCPA shelf are off.
WARNING
RF radiation hazard
Do NOT disconnect any RF cables when transmitters are on.
CAUTION
Service interruption
The service of the entire cell/sector of the TRU under test will
be affected. Perform the tests during low traffic period.
Summary of Contents for DualMode 800
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Page 6: ...vi Publication history Nortel Networks Confidential 411 2051 500 Draft 00 01 November 1999...
Page 82: ...2 20 Periodic maintenance 411 2051 500 Draft 00 01 November 1999...
Page 90: ...3 8 Test equipment and precautions 411 2051 500 Draft 00 01 November 1999...
Page 100: ...5 6 Master Oscillator tests 411 2051 500 Draft 00 01 November 1999...
Page 106: ...6 6 Antenna and transmission line tests 411 2051 500 Draft 00 01 November 1999...
Page 116: ...8 4 Alarm Control Unit ACU tests 411 2051 500 Draft 00 01 November 1999...
Page 138: ...10 2 ICRM tests 411 2051 500 Draft 00 01 November 1999...
Page 200: ...12 10 Enclosure maintenance 411 2051 500 Draft 00 01 November 1999...
Page 208: ...A 8 Appendix A Frequency table 411 2051 500 Draft 00 01 November 1999...
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