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Performance Verification
4–44
AM700 Audio Measurement Set Service Manual
Table 4–9: Phase Jitter 1
Test AM700: Jitter freq =
Jitter ampl = 10 UI Test AM00
50 Hz 200 Hz 1 kHz
D 1x, 120 Hz 18 – 22 18 – 22 19 – 21
U 1x, 1200 Hz 18 – 22 18 – 22 19 – 21
T 8x, 1200 Hz 18 – 22 18 – 22 N/A
c. Set the test AM700 Jitter Amplitude = 0.32 UI, and use the cursor to
measure as indicated in Table 4–10.
Table 4–10: Phase Jitter 2
Test AM700 Test AM700: Jitter freq. =
Jitter ampl =0.32 UI 50 Hz 200 Hz 1 kHz 10 kHz 30 kHz 50 kHz
1 x, 120 Hz –12 to –8 –12 to –8 –11 to –9 –12 to –8 N/A N/A
1x, 1200 Hz N/A N/A –11 to –9 –12 to –8 N/A N/A
8x, 120 Hz –12 to –8 –12 to –8 –11 to –9 –12 to –8 –12 to –8 –12 to –8
8x, 1200 Hz –12 to –8 –12 to –8 –11 to –9 –12 to –8 –12 to –8 –12 to –8
1. Connect the test AM700 as follows:
Test AM700 AES REF OUT to DUT Digital In.
2. Calibrate the DUT as follows:
Press: Configure button
Touch System Setup soft key
Touch Calibrate soft key
Touch Calibrate Now soft key
Touch Accept Changes soft key
3. Set the DUT as follows:
LF Rej = 120 Hz
Jitter Gain = x8
Avg. = 8
4. Zoom in and use the cursor to measure the spectrum at 50 Hz.
5. Check that the reading is below –40 dBUI.
6. Scroll through spectrum up to 1 kHz.
7. Check that any spurs found are below –40 dBUI.
Check Jitter Spectrum
Noise Floor