Nortel DualMode 800, Maintenance Manual

Page: 158 / 216

11-20 DRU tests
411-2051-500 Draft 00.01 November 1999
1 kHz Tone Generation test
This test ensures that the frequency and deviation of the 1 kHz test tone
generated by the TRU are within specifications.
Step Action Observation
1 Ensure that the TRU configurations are as
listed in Table 11-1 for the 1 kHz Tone Gen
test.
2 From the interface terminal, use the I
command to generate an on-channel 1 kHz
tone at 8 kHz deviation.
>I
The TRU will prompt for the antenna path
choice:
Enter BCH, RF, or OFF
3 Enter the RF option to test the tone on the
RF side of the TRU.
>RF
The Tone Generation status on the screen
shows:
Tone Gen: RF
4 Check the 1 kHz Tone Gen frequency as
displayed on the AF meter. The frequency should be 1000 Hz
±
1 Hz.
5 Check the carrier frequency deviation as
displayed on the DEV meter. Deviation between 7.2 kHz and 8.8 kHz.
6 Record the frequency and the deviation on
the test forms.
7 Use the I command to turn off the on-
channel 1 kHz tone at 8 kHz deviation.
>I
The TRU will prompt for the antenna path
choice:
Enter BCH, RF, or OFF
8 Enter the “OFF” option to turn off the tone on
the RF side of the TRU.
>OFF
The Tone Generation status on the screen
shows:
Tone Gen: OFF