Canon VC-C50iR, Instruction Manual

Page: 55 / 246

Before You Use the Product
17
ENGLISH
External lighting
control signal
Item Pin No. Pin name Signal direction Notes
A8 Light_ON/OFF- Output Current input
External lighting switch
50V/200mA (max.)
B8 Light_ON/OFF+ Output Current output
External lighting switch
50V/200mA (max.)
A9 Alarm_- Output Current input
Alarm control 50V/
200mA (max.)
B9 Output Current output
Alarm control 50V/
200mA (max.)
A10 Sensor_- Input Current input GND
B10 Input Current output
Pull-up to 5V, diode
protected
External sensor
input
Alarm control
signal
Input/
Output
External Device I/O Terminals
External device input terminals
These comprise 2 sensor terminals (positive (+) and negative (–)). The negative terminal is
connected to the camera’s own internal ground and the positive terminal is pulled up to 5 volts
at 10 kohm via a protection diode. Connecting the respective leads to the positive and
negative terminals and then shorting across the terminals (ON) or not (OFF) generates an
interrupt for the internal controller. The power supplies and grounds for connected sensors
and switches should be connected to electrically segregated terminals. When an ON state is
detected, an event occurrence is posted to the host PC.
External device output terminals
These comprise ON and OFF terminals for the alarm and light terminals, with equivalent
terminals in both directions for the respective combinations. The two terminals can be
switched between conductive and resistive states using the internal controller. In addition, an
optical connector is used in the output terminal and is separate from the internal circuits in the
camera.
The load connected to the output terminal should be within the following ratings:
Rated values between output terminals
Max. DC voltage: 50V
Continuous load current: 120 mA
Item Pin No. Pin name Signal direction Notes