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Specifications
1–18
AM700 Audio Measurement Set Service Manual
Table 1–5: Digital audio unit specifications (cont.)
Capabilities Description
Generator variable parameters
Static Phase Difference
This is the phase difference between the generator
output and the selected reference (input or output). The
primary function of the measurement is to check
compliance with AES11-1991 section 5.3.
Range –64 to 63.5 UI (Unit Intervals)
Resolution 0.5 UI
Accuracy Offset <50 ns, nonlinearity <5 ns
Phase Jitter Generation
Range 0 to 10 UI p-p from DC to 500 Hz, decreasing proportionally to 0.5 UI p-p
from 10 kHz to 50 kHz.
Resolution 0.02 UI p-p
Accuracy
DC to 20 kHz ±(10% of value + 0.02 UI)
20 kHz to 50 kHz ±(20% of value + 0.02 UI)
Cable Simulator A selectable cable simulator inserts the response of a long, typical digital
audio cable in the front-panel Digital Out signal.
Simulated Cable Response 125 ns to 175 ns rise time measured at the second transition of the
preamble of subframe 1.
Output Level
Range XLR: 0 to 8.0 V p-p into 110 W
BNC: 0 to 2.04 V p-p into 75 W
Resolution XLR: 10 mV
BNC: 2 mV
Accuracy XLR: ±(10 mV + 5% of setting)
BNC: ±(2 mV + 2% of setting)
Main Output Residual Jitter
Clock Source From Audio
Frequency Offset = 0 0.05 UI p-p maximum
Frequency Offset < > 0 or Clock Source is
Variable
0.08 UI p-p maximum
Clock Source From Ref (0.08 UI p-p + reference jitter) maximum
Reference signal jitter up to 15 kHz adds directly to output jitter. Reference
input jitter above 15 kHz is attenuated by 6 dB per octave.