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Performance Verification
4–36
AM700 Audio Measurement Set Service Manual
Verify Digital Generator
These checks are done using one AM700 Audio Measurement Set (the test
AM700) as a signal source or measurement instrument for the AM700 being
tested (the DUT).
1. Turn power on both AM700 Audio Measurement Sets.
2. After FFT application is initialized, make the following choices for both
measurement sets:
a. Press the Configure button.
b. In the Configure menu, touch the State Saving soft key.
c. Touch the Factory Default soft key and select Factory Defaults.
3. Set the DUT and the test AM700 as follows:
Press Digital button
Touch Eye Diagram icon
Press Menu button
Touch Digital Audio soft key
Set Sample Rate = 48 kHz
Touch Interface Timing soft key
Set Mode = From Audio
4. Connect the DUT Digital Out to the test AM700 Digital In.
5. Check that the test AM700 Main Sample Freq. = 47999.76 to 48000.24 Hz.
6. Check that the test AM700 Peak to Peak Jitter reading is 0.05 UIp-p or less.
7. Set the DUT: Interface Timing as follows:
Mode = Variable
Var Freq = 30 kHz to 52 kHz
8. Check that the test AM700 eye diagram stabilizes, and the Main Sample
frequency follows the variable frequency of the DUT as it is changed in
step 7.
9. Check that the test AM700 has a Peak to Peak Jitter reading of 0.08 UIp-p or
less when the DUT Var Freq = 52 kHz.
10. Set the DUT as follows:
Touch Jitter Generation soft key
Set Long Cable Simulation = ON
11. Check that the test AM700 Main Channel Equalization reads 5 or 6 dB.
Clock Rate Range
and Accuracy