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Digital Audio Specification
Audio Input
The
digital
input of the VCM accepts four stereo pairs of digital audio. The available encoding options depend upon the licenses
enabled.
The HD/SD-SDI input of the VCM's can be used for audio input, where eight stereo pairs can be extracted from four groups of
embedded audio. The DID associated with each group is set when the unit leaves the factory:
Specification
The following is the specification for the Audio Digital Input.
The following is the specification for the audio digital reference tone out:
Input Level
800mV pk-pk nominal ±10%
Return Loss
Better than 15 dB, 10 MHz - 270 MHz
Input Impedance
75 Ω (powered-down impedance = 75 Ω)
DID associated with each group
HD-SDI
SD-SDI
GROUP 1
0x2E7
0x2FF
GROUP 2
0x1E6
0x1FD
GROUP 3
0x1E5
0x1FB
GROUP 4
0x2E4
0x2F9
Item
Description/Specification
Safety Status
SELV
Connector Designation
AUDIO/DATA
Connector Type
15-way D-Type male connector
AES3
AES-3id
Interface
Balanced
Unbalanced
Connector
XLR-3
BNC
Impedance
110 Ω
75 Ω
Input Level
2 V -7 V peak to peak
1 V peak to peak
Max Input
7 V peak to peak
1.2 V peak to peak
Max current
64 mA
1.6 mA
Min Input
0.2 V
0.32 V
Cable
Shielded Twisted Pair
Coax
Item
Decsription/Specification
AES/EBU digital
Termination
75 Ω
Sampling rate
48 KHz
© Ericsson AB 2011. All rights reserved
© Ericsson AB 2011. All rights reserved
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9/11/2012
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