Canon VC-C50i External Device I/O Terminals, English, Before You Use the Product, Item, Pin name

Before You Use the Product

Item	Pin No.	Pin name	Input/	Signal direction	Notes
			Output
External lighting	A8	Light_ON/OFF-	Output	Current input	External lighting switch
control signal					50V/200mA (max.)
	B8	Light_ON/OFF+	Output	Current output	External lighting switch
					50V/200mA (max.)
Alarm control	A9	Alarm_-	Output	Current input	Alarm control 50V/
signal					200mA (max.)
	B9	Alarm_+	Output	Current output	Alarm control 50V/
					200mA (max.)
External sensor	A10	Sensor_-	Input	Current input	GND
input
	B10	Sensor_+	Input	Current output	Pull-up to 5V, diode
					protected

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

ENGLISH

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