Building A 64 Input Switcher - pro bel 4408 Technical Manual

4408
3.5

Building a 64 input switcher

To create a 64x1 an extra audio switcher card is needed to act as a combiner module.
AUDIO INPUTS
1 TO 32
CONTROL
INPUTS
1 TO 32
AUDIO INPUTS
33 TO 64
CONTROL
INPUTS
33 TO 64
AUDIO INPUTS
1 AND 2
CONTROL INPUTS
1-32 TO SEL 1
33-64 TO SEL 2
Note: With PL6 set to ON, each card in each 32x1 block has the 64x1 SEL address
lines bussed together using the address expansion connectors. The 64x1 SEL line is
also brought to pin 12 of the control connector on each rear connector. This address
line forms an active low select line for each 32x1 block, which then become the 2
channel select signals for combiner module by making external connections.
Technical Manual
PL9
8 X 1
PL6 64x1
ON
EXPANSION
PL3 MODE
CONFIG
BUTTON
PL10
PL9
8 X 1
PL6 64x1
ON
EXPANSION
PL3 MODE
CONFIG
BUTTON
PL10
PL9
8 X 1
PL6 64x1
ON or OFF
EXPANSION
PL3 MODE
CONFIG
BUTTON
PL10
Building a synchronous 64x1 switch
Digital Audio 8x1 Switch
VERTICAL PULSE
FROM VIDEO CARD
32 X 1
PL7
1ST 32 X 1
AUDIO OUTPUT
NOTE:
LAST CARD IN EACH
32X1 BLOCK HAS
PL4,5: ON
EXPANSION JUMPERS
PL11,12,13: ON
PL4 and PL5 SET
PL14: OFF
TO OFF
PL8
32 X 1
PL7
2ND 32 X 1
AUDIO OUTPUT
NOTE:
LAST CARD IN EACH
32X1 BLOCK HAS
PL4,5: ON
EXPANSION JUMPERS
PL11,12,13: ON
PL4 and PL5 SET
PL14: OFF
TO OFF
PL8
COMBINER
PL7
64 X 1
AUDIO OUTPUT
NOTE:
COMBINER NEEDS
ONLY PL3 SET TO
BUTTON
PL8
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