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2. I/O Terminal Connector - Pin Assignment
Pin
Function
Description
1
COM
Digital output implementation; Pin2 to COM (Pin1) is a Photo-coupled relay on
Normal Open status. External device can directly connect to the terminals.
2
Relay-No
However the current that will go through the 2 nodes must not exceed 130mA. An
external "Relay" can also be connected to the terminals as an implementation. In
this case, current (or/and voltage) limitation is specified by the external Relay.
3
GND
Two sets of Digital Input, DI1 and DI2; the internal device is also photo-coupled
4
DI1
electrical relay. In practice, the external device can be simply an On/Off switch.
Two sets of On/Off switch can be connected as different trigger source.
5
DI2
6
12V
An extra power entry for the camera device; or if power is supplied from the DC
jack, Pin6 can provide 12V power output. This power can be supplied for the
7
GND
external "Relay" device. The Pin7 is the same ground as Pin3.
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