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Point Grey <strong>Blackfly</strong> Technical Reference<br />
6 Input/Output Control<br />
6 Input/Output Control<br />
6.1 General Purpose Input/Output (GPIO)<br />
The camera is equipped with a 6-pin GPIO connector on the back of the case. The connector is a Hirose HR10A-7R-<br />
6PB, the mating connector is a Hirose HR10A-7P-6S(73).<br />
Table 6.1: GPIO pin assignments (as shown looking at rear of camera)<br />
Diagram Pin Function Description<br />
1 Power +12 V DC Camera Power<br />
2 Opto Input 1 Opto-isolated input<br />
3 NC / +3.3 V Firmware controlled +3.3 V output. Current limited.<br />
4 Opto Output 1 Opto-isolated output<br />
5 Opto GND Ground for opto-isolated I/O, not connected to camera ground<br />
6 GND DC camera power ground<br />
For more information on camera power, see Powering the Camera on page 23.<br />
For details on GPIO circuits, see GPIO Electrical Characteristics on page 31.<br />
6.2 GPIO Modes<br />
6.2.1 GPIO Mode 0: Input<br />
When a GPIO pin is put into GPIO Mode 0 it is configured to accept external trigger signals.<br />
6.2.2 GPIO Mode 1: Output<br />
When a GPIO pin is put into GPIO Mode 1 it is configured to send output signals.<br />
Do not connect power to a pin configured as an output (effectively<br />
connecting two outputs to each other). Doing so can cause damage to<br />
camera electronics.<br />
6.2.3 GPIO Mode 2: Asynchronous (External) Trigger<br />
When a GPIO pin is put into GPIO Mode 2, and an external trigger mode is enabled (which disables isochronous data<br />
transmission), the camera can be asynchronously triggered to grab an image by sending a voltage transition to the pin.<br />
See Asynchronous Triggering on page 34.<br />
Revised 12/13/2012<br />
Copyright ©2012 Point Grey Research Inc.<br />
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