Grass Valley 8910ADA-M - Manual (Page 48)

48 8910ADA-M/ST/SR — Instruction Manual
Functional Description
Functional Description
8910ADA-M/-ST
Refer to the block diagram in Figure 22 while reading the following func-
tional description for the 8910ADA-M and 8910ADA-ST modules.
Figure 22. 8910ADA-M/-ST Block Diagram
The 8910ADA-M Analog Audio DA module is an analog audio distribution
amplifier (DA) that has one balanced bridging input. The input can be
amplified over a range of -12 to +30 dB by setting an eight-position jumper
that has 6 dB gain change per step. A front panel gain adjustment has an
adjustment range of larger than 6 dB to allow continuous adjustment from
step to step on the gain jumper. The output can drive eight balanced and
8156-01r1
Balanced
Input
Balanced
Input
CH 1/
Monaural
Input
CH 2
Input
Present on Stereo DA Only
Regulated
Power Supplies
Processor
PWR
COMM
FAULT
Monaural
CH 1/
Monaural
Outputs
CH 2/
Monaural
Outputs
Stereo
Selectable
Gain Amp
Selectable
Gain Amp
Output Amps
Gain
range >6 db
Gain
range >6 db
Stepped gain
6 db per step
Stepped gain
6 db per step
-12
+
-
+
-
+30
CH1x4
(Jumper JP3
pins 1-2)
(Jumper JP3
pins 1-2)
(Jumper JP3
pins 2-3) CH1x8
CH2x4
-12 +30
Stereo