2.2Installing DA sub-boards
One or two 5635 DAC sub-boards can be fitted to the standard 4429 extractor at any
time to provide analogue audio outputs. DAC 1 provides analogue versions of the
first stereo pair, whilst DAC2 provides analogue versions of the second audio pair
from the selected group.
he converter should only fit one way round into the 4429 base module, since the
two header plugs are of slightly different sizes.
Proceed as follows:
•remove the 4429 base module from the frame
•fit the converter(s) as shown in the diagram, taking care to line up the pins with
the base board headers
•push the converter gently into its sockets, taking care not to bend any pins
•re-insert the module into the frame
Note: Removal and insertion of the 4429 module may be done with the frame
powered
Note: In this drawing the silkscreen writing on the 5635 ADC sub-board is shown the
right way up for clarity. he actual board may have inverted text.
6chapter Issue 1
4429
Fitting a 5635 DAC sub-board
POWER
+12V
+5V
+15V
-15V
0V
REMOTE
LOCK 1
LOCK 2
4429
DC 1
2
10
INIT
R1
R 2
D
VD
ER
RESET
TP14
TP5
TP6
TP7
TP4
LEFT
RV2
RIGHT
RV1
5635
LOC L
REMOTE
LEFT
RV2
RIGHT
RV1
5635
11 pin connector12 pin connector
