ACTi E89 - Manual (Page 29)

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Hardware Manual
29
To connect input devices (DI), map the pins to one of the pin combinations below:
Device Pin Mapping Instructions
Digital Input 1 (DI1)
GND Connect the wires of the first input device to GND
and DI1 .
DI1
Digital Input 2 (DI2)
GND Connect the wires of the second input device to GND
and DI2 .
DI2
To connect output devices (DO), map the pins to one of the pin combinations below:
Device Pin Mapping Instructions
Digital Output 1 (DO1)
12V Connect the wires of the first output device to 12V
and DO1 .
DO1
Digital Output 2 (DO2)
12V Connect the wires of the second output device to 12V
and DO2 .
DO2
The table below shows the DI/DO connection specifications:
Device
DI
Connection design TTL - compatible logic levels
Voltage
To trigger (low) Logic level 0: 0V ~ 0.4V
Normal (high) Logic level 1: 3.1V ~ 30V
Current 10mA ~ 100mA
DO
Connection design Transistor (Open Collector)
Voltage & Current < 24V DC, < 50mA
Typical Connection
Based on these specifications, if the DI device has a voltage of 0V ~ 30V or the DO device has a
voltage of < 24V (< 50mA), then the camera can supply internal power to these devices and there
is no need to connect the DI/DO device to an external power source.