Audio Output Gain Adjustment; Rb-Vhdma8 D-Type Pin-Out - Sonifex Redbox RB-VHDMA8 User Handbook Manual

Full Scale Setting
The analogue output full-scale settings, which determine the full-scale 0dBFS level for the
digital audio, are set internally via jumpers. They are factory set to +18dBu by default.
Full-scale Settings
+12dBu
+18dBu
+24dBu

Audio Output Gain Adjustment

The default audio output gain is unity. However, to accommodate lower or higher level
sources it is possible to introduce gain or attenuation on a per channel basis. Each audio
channel has an adjustable gain range from -24dBu to +24dBu in 0.5dB increments. This is
set using the remote Control ports. Once set, this value is stored and reloaded each time
the unit is powered on.

RB-VHDMA8 D-type Pin-out

Pin No. Function
De-Embed Bank 1
1 Channel 1+
14 Channel 1-
2 Channel 1 Ground
15 Channel 2+
3 Channel 2-
16 Channel 2 Ground
4 Channel 3+
17 Channel 3-
5 Channel 3 Ground
18 Channel 4+
6 Channel 4-
19 Channel 4 Ground
7 to 13 Do not connect
20 to 25 Do not connect
Redbox Embedder/De-embedder User Handbook
Jumper
JP1
Not fitted
Fitted
Fitted
Function
De-Embed Bank 2
Channel 1+
Channel 1-
Channel 1 Ground
Channel 2+
Channel 2-
Channel 2 Ground
Channel 3+
Channel 3-
Channel 3 Ground
Channel 4+
Channel 4-
Channel 4 Ground
Do not connect
Do not connect
R B - V H D M A 8
JP2
Not fitted
Not fitted
Fitted
2
9