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LBI-39055
NOTE
SW2 is not present on Audio PA Board
P29/5000055000. Audio source selection on this
earlier board (sometimes referred to as a "Phase 1"
board) is accomplished via two jumpers/plugs
identified as JP1 and JP2. During normal (non-test)
console operations, jumpers must be in between
pins "A" and "C" on both plugs. These settings
route Line A and Line B audio signals from the
Audio PA Board to the Speaker A and Speaker B
power amplifiers. See LBI-38716 for additional
details.
TABLE 3 − − AUDIO PA BOARD
AUDIO SOURCE SELECTION
SW2 POSITION
1
2
3
4
ON OFF
x
x
OFF ON
x
x
x
x
ON OFF
x
x
OFF ON
"x" = either position
ON
1
Figure 5 − − Audio PA Board SW2 Factory Setting
Audio Matrix Board
SW1 − − Mic Audio ALC Enable/Disable DIP Switch
DIP switch SW1 on the Audio Matrix Board is used to
independently enable
or
automatic level control (ALC) circuit. The switch has four
(4) positions, one for each mic that may be connected to the
board.
As shown in Figure 6, Audio Matrix Boards ship from
the factory with all mic audio ALC circuits enabled. This is
accomplished by setting all four SW1 switch positions to
"ON" or "CLOSED". Table 4 lists each switch position and
its corresponding mic input. Normally, mic audio ALC
should not be disabled. Disable a mic's ALC by setting the
corresponding DIP switch position to "OFF" or "OPEN".
6
NOTE
SOURCE
OUTPUT
Matrix Bd.
Speaker A
Line A In
Speaker A
Matrix Bd.
Speaker B
Line B In
Speaker B
4
2
3
disable
each
microphone's
TABLE 4 − − AUDIO MATRIX BOARD
MIC AUDIO ALC ENABLE/DISABLE
SW1 POSITION
1
2
3
4
ON
1
Figure 6 − − Audio Matrix Board SW1 Factory Setting
I/O Board
No I/O Board configuration is necessary. Simply verify
the Board is fully inserted into the far left-hand slot (as
viewed from back of Audio Tower's case).
INTERCONNECTING THE
EQUIPMENT
A C3 Maestro dispatch console system requires the
following interconnections:
•
PC-to-CEC/IMC Data Concentrator Card
(via punch blocks, if employed)
•
Audio Tower-to-CEC/IMC Audio Concentrator
Card (via punch blocks, if employed)
•
PC-to-Audio Tower
•
PC-to-Dispatch Keyboard
•
PC-to-Standard Keyboard (when in use)
•
PC-to-Video Display Monitor
•
Audio Tower-to-Desk Mic (if used)
•
Audio Tower-to-Supervisor Headset Jack Box
(if used)
•
Audio Tower-to-Operator Headset Jack Box
(if used)
•
Audio Tower-to-Boom/Gooseneck Mic (if used)
MIC
Boom/Gooseneck
Desk
Operator Headset
Supervisor Headset
4
2
3
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