Crystal Vision
Installation
Setting input analogue gain
The ADCA412 analogue gain is accomplished using jumpers and/or gain potentiometers
as explained in the following table:
Link/Pot
Explanation
JL1
1-2 (rearwards)
2-3 (forwards)
R8
Analogue 1, stereo 1 left gain. Factory set = 0 dBFS output
+18 dBu = 0 dBFS
+24 dBu = 0 dBFS
Adjusts analogue 1 gain
JL2
1-2 (rearwards)
2-3 (forwards)
R9
Analogue 2, stereo 1 right gain. Factory set = 0 dBFS output
+18 dBu = 0 dBFS
+24 dBu = 0 dBFS
Adjusts analogue 2 gain
JL3
1-2 (rearwards)
2-3 (forwards)
R10
Analogue 3, stereo 2 left gain. Factory set = 0 dBFS output
+18 dBu = 0 dBFS
+24 dBu = 0 dBFS
Adjusts analogue 3 gain
JL4
1-2 (rearwards)
2-3 (forwards)
R11
Analogue 4, stereo 2 right gain. Factory set = 0 dBFS output
+18 dBu = 0 dBFS
+24 dBu = 0 dBFS
Adjusts analogue 4 gain
Note:
R8 – 11 have a gain range of about –6 to +4dB wrt the gain selected by JL1~4. For the
+18 dBu link selection, the range is approxi12 dBu to +20 dBu = 0 dBFS. For
the +24 dBu link selection, the range is approxi20 dBu to +28 dBu = 0 dBFS.
Balanced outputs require the use of rear modules with a ‘D’ type connector and
unbalanced outputs are for use with BNCs.
Other link settings
The module has the following links or headers, which must be set as follows:
•
JL8, JL9
both links always fitted 1-2 (forwards)
•
JL10, JL11 no links fitted
•
PL2-4
either OPAES 75 or OPAES 110 MUST be fitted
•
PL5
nothing fitted
ADCA412 User Manual R2.1
36
30 October 2018
