Audio Performance Verification
Audio Tests (O
ptions AD and DDE)
Analog Audio Level Meter
Accuracy Over Frequency
This test measures the Analog Input Level Meter Accuracy over the audio
frequency range.
Performance Requirement. This test verifies performance characteristics and is
listed in the test record.
1. Press FACTORY.
2. Press and hold the DISPLAY SELECT 4 button to display the pop-up menu.
3. In the Audio Input s ubmenu, select Analog A .
4. Remove the audio tile pop-up by pressing AUDIO.
5. Install
the analog breakout cable to the Analog Audio I/O connector.
6. Connect the generator balanced (BAL) analog output to the Input A1 XLR
of the b
reakout cable.
7. Set the analog audio generator as follow s:
Control or Setting Value
Frequency 100 Hz
Output Level
18 dBu A udio Tone
Output Impedance 10 Ω
8. Check for an indication of 18 dBu ±0.5dB in the corresponding bar and record
the value in the test record.
9. Change analog audio generator Frequency to 1 kHz.
10. Check for an indication of 18 dBu ±0.5dB in the corresponding bar and record
the value in the test record.
11. Change analog audio generator Frequency to 19 kHz.
1
2.
C
heck for an indication of 18 dBu ±0.5dB in the corresponding bar, and
record the value in the test record.
13. Repeat steps 7 through 12 for e ach of the other five Input A XLR connectors
in the breakout cable.
14. Press and hold the DISPLAY SELECT 4 button to display the pop-up menu.
15. In the Audio Input submenu, select Analog B.
16. Press the AUDIO button to remove of the pop-up menu.
17. Repeat steps 6 through 13 for the Input B XLR connectors on the audio
breakout cable.
Waveform Rasterizers Specifications and Performance Verification 117
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