Grass Valley EFP1685 - Manuel (Page 186)

186 Chapter 3 - 1685/1686 Channel Control Unit
CCU1686
B1685902AC
September 2000
THOMSON EFP1685/CCU1686
User manual
CAMERA
POWER
CAMERA CCU
-30V
+12V
TRIAX
OPEN
OVER
LOAD
CAM
OFF
UNDER
LOAD
FAIL
+300V
FAIL
+12V
CAM
ON
This indicator light, which is nor-
mally off, indicates that the came-
ra-Channel Control Unit connec-
tion has not been made.
Normally, this indicator
light lights to indicate
presence of the 30 V
standby power supply
for the intercom sys-
tem, when the POWER
ON/OFF switch on the
CA85 is set to OFF.
this voltage must be
present when starting
the equipment.
This normally off indicator li-
ght indicates an insufficient
value in the 300 V power
supply voltage from the CA-
MERA POWER converter
obtained from the MAINS
RECTIFIER board (V300 <
220 V DC).
Normally, this light lights to in-
dicate presence of 12 V to
supply the camera power
converter control circuit. This
voltage is obtained from the
CCU power circuit. This indicator light,
which is normally
off, indicates ab-
normal over-con-
sumption in the
camera head (e.g.
short-circuit). This indicator li-
ght, which is nor-
mally off, indicates
abnormal low
electrical power
consumption in
the camera head.
Normally off, this indica-
tor light indicates that
the + 12 V or 12 V of the
camera power converter
control circuit is insuffi-
cient. (V
12V
< 10 V or
V
-12V
> - 2 V).
This light, which is nor-
mally lit, indicates that
the camera head is sup-
plied with 230 V.
Lighting of this normally off light
indicates that the POWER
ON/OFF switch on the camera
head is on OFF. This lights also
when a camera head which
has not been designed to ope-
rate with the Channel Control
Unit has been connected inad-
vertently: the CAMERA
POWER + 230 V DC converter
is then cut off.
ON FAIL
I
O
CCU
POWER
POWER
MAINS
This normally lit indicator indi-
cates the presence of all volta-
ges provided by the CCU
POWER supply. This normally off indicator light indica-
tes a fault on one or more of the sup-
ply voltages provided by the CCU
POWER supply. Equipment power
on/off switch.