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10.2 Voltage supply via external video control unit
The MD3071A can also be used as a display for an external video control unit.
The voltage supply for the monitor then comes from the video control unit (Con-
nection IN-3). Here, too, video sources (cameras) can be connected to connec-
tions IN-1 and IN-2. Please note that this increase the operating current required
which needs to be supplied from the external video control unit. The current con-
sumption via connection IN-3 is limited to 1 A on the monitor side. Higher current-
ly levels will cause the monitor to switch off with the power button flashing red.
Connection is via a pre-assembled Motec system cable (e.g. MK73 xx).
IN-3
Socket, 9-pin, Mi-
ni-DIN (view of the
socket on the mo-
nitor)
Contact
Signal
1
VCC (rated voltage 12 V...48 V DC;
9 V...60 V DC)
2
Control line for HOR mirror inversion (input)
3
Not used
4
Not used
5
Video 3 (input)
6
Video 3 GND
7
SEL-3 control line (input) or CTRL-OUT (12
V) ext. switch output 12 V/100 mA
8
Service 1 (RS232-RxD)
9
Service 2 (RS232-RxD)
10 (shield)
GND voltage supply (-)
EN
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