Configuring output mode – Grass Valley 2020DAC D-To-A User Manual
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2020DAC Instruction Manual
2020DAC 4-Channel Audio Digital to Analog Converter
Configuring Output Mode
The 2020DAC provides thirteen possible output configurations for each
output channel, Channel 1/2 (L/R) and Channel 3/4 (L/R), as shown in
. The module output channels can be configured using the corre-
sponding rotary switches shown in
. To make a configu-
ration setting, simply rotate each switch to the desired output
configuration. Each 16-position rotary switch selects one of 13 possible
output modes. Positions B and C are not used and positions 0 and F select
the same mode – Factory default.
provides the possible input and output conditions that result from
different inputs and settings.
Table 5. 2020DAC Output Mode Configurations
Switch
Position
Mode Description
0
Factory default – No phase inversion, channel swapping or summing
1
Channel swap – Left and Right
2
Both channels phase inverted
3
Left channel phase inverted
4
Right channel phase inverted
5
Right channel to both channels
6
Left channel to both channels
7
Left + Right to both channels (-6dB mono sum)
8
Left - Right to both channels
9
Left + Right to Left channels and Left - Right to Right channel (-6dB, MS decode/encode)
A
Left + Right to both channels and both channels phase inverted
B
(not used, outputs digital silence)
C
(not used, outputs digital silence)
D
Tone 1 to all channels (Digital Silence)
E
Tone 2 to all channels (1 kHz, -20 dBFS)
F
Factory default – No phase inversion, channel swapping or summing
Table 6. Possible Operating Conditions
Audio Input Condition
Output Condition
Any AES-3id with sample rate between 32 kHz to 48 kHz
Audio will be present at any sample rate between the minimum and maximum rates
Any AES-3id with sample rate between 32 kHz to 48 kHz
with Function Switch is set to E (1 kHz Tone)
1 kHz tone with frequency of tone accurate only at 32 kHz, 44.1 kHz or 48 kHz sample
rates
No AES-3id input
Output muted, signal to noise level should be greater than or equal to maximum sig-
nal to noise level
No AES-3id input with Function Switch is set to E (1 kHz Tone)
No tone at output and output will be muted