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Performance Verification
4–40
AM700 Audio Measurement Set Service Manual
9. Connect DUT AES REF OUT to the differential oscilloscope inputs using
the 110 W XLR-to-dual-BNC adapter.
10. Check for 4.9 to 5.9 Vp-p.
1. Connect the DUT as follows:
AES REF OUT XLR connector to the oscilloscope CH 3 trigger input
using 110 W to 75 W impedance matching transformer.
2. Connect DUT Unbalanced Out BNC to the oscilloscope CH 1 input using a
75 W coaxial cable and a 75 W feed through termination.
3. Set the DUT controls as follows:
Touch Interface Timing soft key
Select Mode = From Audio
Touch Jitter Generation
Select Generate Jittered Sine
Set Jitter Ampl = 0.5 UIp-p
Set Jitter Freq. = 1 kHz
Press Generator On button to Off
4. Set scope with delay or mag for 20 ns/div and measure width of jitter using
delta-delay or cursors. It should be 81 ns ±8 ns. (73 to 89 ns).
5. Set DUT Jitter Freq = 10 kHz
6. Check for a jitter width of 81 ns ± 8 ns. (73 to 89 ns).
7. Set DUT Jitter Freq = 20 kHz
8. Check for a jitter width of 81 ns ± 8 ns. (73 to 89 ns)
9. Set DUT Jitter Freq = 30 kHz
10. Check for a jitter width of 81 ns ± 16 ns. (65 to 97 ns)
11. Set DUT Jitter Freq = 50 kHz
12. Check for a jitter width of 81 ns ± 16 ns. (65 to 97 ns)
13. Set DUT Jitter Ampl = 0.09 UIpp, Jitter Freq = 1 kHz
14. Check for a jitter width of 14.6 ns ± 1.5 ns. (13.1 to 16.1 ns)
Phase Jitter Generation