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Specifications
1–16
AM700 Audio Measurement Set Service Manual
Table 1–5: Digital audio unit specifications (cont.)
Capabilities Description
Receiver interface parameter measurements
Input Equalization
The Main Input includes automatic line equalization to
measure and correct roll-off due to typical 110 W digital
audio cable.
Range 0 to 20 dB loss at 10 MHz
Accuracy ±2 dB
Static Phase Difference
This is the phase difference between the selected main
input and the reference input. The primary function of the
measurement is to check compliance with AES11-1991
section 5.3.
Range +49.6% to –50.0% of the digital audio frame
Accuracy ±1% of the digital audio frame
Eye Diagram
This is the data source for the eye diagram display and
its accompanying peak-to-peak jitter measurement. It is
the equivalent-time sample points of the selected main
input.
Time-base PLL Bandwidth 120 Hz or 1.2 kHz, user selectable
Bandwidth Accuracy ±10%
Amplitude Accuracy ±10% with calibration, ±20% with factory calibration factors
Eye Diagram Peak-to-Peak Jitter
Range 0 to 0.8 UI peak-to-peak jitter
Accuracy
LF Reject = 120 Hz. (Response falls 6 dB per
octave below about 100 Hz.)
±(0.02 UI + 5%) for sinusoidal jitter above 500 Hz
LF Reject = 1200 Hz. (Response falls 6 dB per
octave below about 1000 Hz.)
±(0.02 UI + 5%) for sinusoidal jitter above 30 kHz
Eye Diagram Residual Jitter 0.03 UI (combined residual jitter of reference generator and main receiver,
with 120 Hz time-base bandwidth)