Chapter 1
4
••••
Introduction
PD737 User’s Manual
Pin
Function
Description
1
DO_COM
Digital Output:
each digital output pin to COM (Pin1)
is a photo-coupled relay on Normal Open status.
External device can directly connect to the terminals.
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.
Digital Input:
Only one set is designed in this Camera
Model. The internal device is also photo-coupled
electrical relay; and the external device can be simply an
On/Off switch. Each set of On/Off switch can be
connected as one trigger source.
Default Setting:
Short Pin4 and Pin5 with a wire PIN
with a short wire to revert to factory default settings.
Break the short when the LED starts quick flashing, and
then camera will reboot automatically a few minutes
later.
Don’t forget to connect
Audio In / Audio Out / CVBS
Out
GPIO Pin to GND for active; or leave floating (or
unconnected) to deactivate.
2
DO_NO
3
DI
4
GND
5
Default Setting
6
Audio In
7
Audio Out
8
CVBS Out
