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SR2 Installation Manual EN
Indice : C
06/01/2020
7 / 19
1.3.3 Analog AUDIO
1.3.3.1 Pinout
One D-SUB 37 pin female socket provides the access to the 16 balanced analog AUDIO IN.
One D-SUB 37 pin female socket provides the access to the 16 balanced analog AUDIO OUT.
SIGNAL
Socket
contact
D SUB 37
AUDIO
In/Out
Socket
contact
SIGNAL
AUDIO 1 +
1
1
20
19
37
20
AUDIO 1 -
AUDIO 2 +
2
21
AUDIO 2 -
AUDIO 3 +
3
22
AUDIO 3 -
AUDIO 4 +
4
23
AUDIO 4 -
AUDIO 5 +
5
24
AUDIO 5 -
GND
6
25
GND
AUDIO 6 +
7
26
AUDIO 6 -
AUDIO 7 +
8
27
AUDIO 7 -
AUDIO 8 +
9
28
AUDIO 8 -
AUDIO 9 +
10
29
AUDIO 9 -
AUDIO 10 +
11
30
AUDIO 10 -
GND
12
31
GND
AUDIO 11 +
13
32
AUDIO 11 -
AUDIO 12 +
14
33
AUDIO 12 -
AUDIO 13 +
15
34
AUDIO 13 -
AUDIO 14 +
16
35
AUDIO 14 -
AUDIO 15 +
17
36
AUDIO 15 -
GND
18
AUDIO 16 +
19
37
AUDIO 16 -
It is possible to set a -30dB attenuator on each individual output from the web interface.
1.3.3.2 Audio Mic gain (optional module)
The gain blocks are connected to channels 9 to 16.
Thru the web server each input 9 to 16 can be amplified independently with a gain
ranging from 9 to 60 dB (3dB steps) with or without Phantom power supply.
If the gain on a channel is not desired the gain block can be totally bypassed and
the input recovers the line input level.
The phantom power capacity is 10mA for each channel.
Caution: Beware of the input phantom power, after switching off the phantom power
the 48Volts will still be present for few seconds on the inputs, time needed by the
inputs capacitor to discharge thru the internal discharge resistor.
Note: The Mic gain board can be fitted afterwards.
