TONE-PT (Tone Generator)
Issue 1 May 2002
8-1191555-233-142
The tone generator is then told to generate a sequence of test tones whose output
levels are measured by a tone detector. These tones are:
■ 404 Hz at 0 dB
■ 1004 Hz at -16 dB
■ 1004 Hz at 0 dB
■ 2804 Hz at 0 dB
A Tone Detector’s general-purpose tone detector listens for tones and measures
their quality. If any of the measured values are not within limits, the test is
repeated using a general-purpose tone detector in a different Tone Detector circuit
pack. If the values are still out of the limits, the test will fail.
For every failure case of Test #40, do the following:
1. Check that all Tone Detector circuit packs have the same companding
mode as that administered for the system. Correct the situation if there is a
mismatch.
2. Run the long test sequence: test tone-clock PC long repeat 1.
3. If the problem persists, replace the IPSI circuit pack by following the steps
outlined in ‘‘Replacing the IPSI Circuit Pack’’ on page 8-1177.
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