DRU transmit tests
11-19
Wireless Solutions
DualMode 800 Enclosure
Maintenance Manual
MTX08
Step
Action
Observation
1
Ensure that the TRU configurations are as
listed in Table 11-1 for the Modulation
Limiting test.
Note:
Loopback and SAT TX must be set to
off in this test. Use the J and the G
commands to set Loopback and SAT TX to
off, if necessary.
2
From the interface terminal, use the R
command to turn on (unmute) the TX audio.
>R
The terminal will prompt for audio path:
Enter TX, RX, BOTH or OFF
3
Enter the option “TX”:
>TX
The Audio status on the screen shows:
Audio: TX
4
This step is performed at the MTX.
Using the TGEN command at the MAP
position terminal, change the output level
and observe the Carrier Frequency Deviation
for each of the levels listed.
TGEN 1004 -100..........
TGEN 1004 -50...........
TGEN 1004 0.............
TGEN 1004 10............
TGEN 1004 20............
TGEN 1004 30............
TGEN 1004 50............
The Carrier Frequency Deviation will
increase to a maximum value at a certain
tone level and then the deviation value will
decrease. However, the maximum value
must be less than 12.0 kHz at all tone levels.
5
Check the maximum carrier frequency
deviation as displayed on the DEV meter.
Deviation must be less than 12.0 kHz at all
levels.
6
Record the maximum deviation obtained on
the test forms.
7
On the MAP position terminal, enter:
>RLS
The MAP screen will indicate that the trunk is
released and returns to its original state.
8
From the interface terminal, use the R
command to turn off (mute) the TX audio.
>R
The terminal will prompt for audio path:
Enter TX, RX, BOTH or OFF
9
Enter the option “OFF”:
>OFF
The Audio status on the screen shows:
Audio: off
Summary of Contents for DualMode 800
Page 2: ......
Page 4: ......
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...
Page 215: ......