Survey3 Camera Ports

This page describes the Survey3 camera connection ports

You can connect either 1 or 2 Survey3 cameras to the DAQ-A. The ports are labeled 1 or 2.

Here is the pin-out for the camera ports:

Pin Number	Function
1	Power Input/Output (5V)
2	Ground
3	GPS (UART)
4	Camera Trigger (PWM)
5	Camera Exposure Strobe (Relay)
6	Ground

MAPIR DAQ-A: Survey3 Camera Ports

The GNSS sensor data in the DAQ-A is sent via pin 3 to the Survey3 cameras to be saved in the captured image geolocation metadata.

Every time the camera captures an image it will send the exposure pulse on pin 5 to be logged by the DAQ-A. Depending on which camera it is, either 1 or 2, the exposure pulse will be logged separately. The exposure events in the DAQ-A log will be used in our image processing to perform PPK correction, which improves the image location data.