User manual

Appendix A: Specifications
Revised January 1995
AM700 Audio Measurement Set User Manual
A-17
Table A-4: Digital Audio Unit Specifications (Cont.)
Capabilities Description
Input and Output Levels
AES/EBU I/O Levels
Input levels required for normal operation and the
output levels available. For details on measured or
programmable parameters, see either
Main
Receiver Interface Parameter Measurements or
Generator Variable Parameters .
Digital In
Unbalanced In
Digital Reference In
Digital Out
0.15 V to 10 V peak-to-peak
30 mV to 2 V peak-to-peak
0.2 V peak-to-peak minimum eye opening. 10 V
peak-to-peak maximum amplitude, 20% minimum
eye height.
Programmable from 0.2 V to 8 V peak-to-peak
into 110 Ω.
Unbalanced Out
Digital Reference Out
Programmable from 50 mV to 2 V peak-to-peak
into 75 Ω.
Fixed at 5.4 0.5 V peak-to-peak into 110 Ω.
DSP I/O Levels
Vil 0 8 V Vih 2 V Iil 4 mA Iih 0 (CMOS
DSP Inputs
DSP Outputs
Vil
=
0
.
8
V
,
Vih
=
2
V
,
Iil
=
4
m
A
,
Iih
=
0
(CMOS
with 1.2 kΩ pull-up)
Iol = 4 mA, Ioh = –5.3 mA, Vol = 0.6 V,
Voh = 2.4 V
Optical I/O Levels Conforms to TOSLINK parameters.
Receiver Interface Parameter Measurements
Main Input Level
This is the level in Volts peak-to-peak being applied
to the selected digital input (the front-panel Digital
In or rear-panel Unbalanced In).
Measurement Range
Accuracy with Factory Calibration Factors
XLR: 0.15 V to 8.0 V peak-to-peak
BNC: 30 mV to 2.0 V peak-to-peak
XLR: (30 mV + 15% of reading)
BNC: (15 mV + 15% of reading)