9
8
12
2
3
4
5
6
1
J302
7
10
11
68805-M
ARC LAMP POWER SUPPLY
9
J302 Pin Assignment
REMOTE CONNECTOR (J302)
Access to the internal metering, and control signals is provided through this connector. It is a
twelve (12) pin circular connector with the following pin assignments:
Pin 1
External control input. A 0–5 volt DC signal will decrease the output current from the
operating level to no output, if need be.
Pin 2
Internal reference output. A 0–5 volt DC level which is proportional to the output
current. This signal should be buffered with a unity gain amplifier if it is going to be
used.
Pin 3
Input control and reference output common.
Pin 4
Not used.
Pin 5
Remote start input. A contact closure between pins 5 and 7 is equivalent to pressing
the front panel “LAMP START” switch.
Pin 6
Not used.
Pin 7
Remote start input. A contact closure between pins 5 and 7 is equivalent to pressing
the front panel “LAMP START” switch.
Pin 8
Not used.
Pin 9
Remote meter output: Power.
Pin 10
Remote meter output: Current.
Pin 11
Remote meter output: Voltage.
Pin 12
Remote meter output: Common.
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