Audio Performance Verification
AES Audio Te st
s
The following tests verify that the Audio module for the WVR7020 and
WVR7120 waveform rasterizers meets the warranted characteristics listed in the
Specificatio
ns chapter. Characteristics with typical specifications (not warranted)
are also checked with Pass / fail criteria.
AES Sample Rate Range
This test verifies that each AES input locks to an input signal.
Typical Operation Check. This test checks for typical operation. Typical values
are not guaranteed characteristics and are listed in the test record as Pass / fail.
1. Press FACTORY.
2. Connect
the digital audio generator unbalanced (UNBAL) output to the AES
A 1-2 In BNC connector using a 75 Ω cable.
3. Set the
digital audio generator as follows:
Control or Setting Value
Frequency 1 kHz
Output Level –20 dB FS Audio Tone
Sample Frequency
96 kHz
Unba
lanced Vp-p
1.000 V (Carrier Level)
4. Press and hold the DISPLAY SELECT 4 button to display the Audio pop-up
menu.
5. In the Audio Input submenu, select AES A.
6. Press the Display Select 4 button to dismiss the Audio menu.
7. Check for an indication of –20 dB FS and no error messages in the
corresponding bars, and record the Pass/fail result in the test record.
8. Move the audio generator output to each of the remaining AES A In
connectors and repeat previous step for each connector.
9. Set the Sample Frequency on the digital audio generator to 44.1 kHz.
10. Check for an indication of –20 dB FS and no error messages in the
corresponding bars, and record the Pass/fail result in the test record.
11. Move the audio generator output to each of the remaining AES A In
connectors and repeat previous step for each connector.
12. Disconnect the test setup.
Waveform Rasterizers Specifications and Performance Verification 111
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