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7
1. Parts and their functions
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Front panel
Camera Control Unit AK-HCU3550
PGM1
PGM2
OFF
ON
MIC
PGM INCOM
PUSH
INCOM
PGM
LEVEL
OFF
PTT
SYS PRIV
TALLY/CALL
FAN
SHORT
OPEN
ALARM
ON
POWER
OFF
250V 2A
FUSE
CAMERA
MENU
SEL/SET
ON
OFF
Inside the front panel
Power switch [POWER]
This is the unit’s power switch.
Move it to the ON position when turning on the power.
It functions as a circuit breaker to protect the unit from
overcurrents.
When this function is tripped, the switch is set to the OFF
position.
Power indicator [POWER ON]
This lights when the power switch
is set to ON and
power is supplied to the unit.
Camera cable open alarm indicator
[ALARM OPEN]
This lights when the unit and camera are not connected
by the optical fibre multi cable.
Camera cable short-circuit alarm indicator
[ALARM SHORT]
This lights when the cable connecting the unit and
camera has been short-circuited.
Fan alarm indicator [ALARM FAN]
This lights when the unit’s cooling fan stops running.
Tally indicator/CALL switch [TALLY/CALL]
This functions both as the CALL switch, which is pressed
when calling the camera side, and the tally indicator.
The indicator remains lit when tally signals (R) are input.
While the CALL switch is pressed on the camera, ROP,
MSU or CCU, it lights up when no tally signals are input,
and it goes off when tally signals are input.