Load the program into the SITCOM, plug in the ribbon connector to the jig and press RESET.
When the jig is set up correctly, the display will read ERR if no camera is in position, or SEL? if it is.
ERR (error) means that the light source is being ‘seen’ by the sensor.
I mounted the source on a swinging arm that can be swung away from the sensor to locate the camera.
To initially set up or test the jig, hold down either the grey or blue buttons and press the RESET on the SITCOM.
TEST should now show on the jig display.
If the GREY button was held down, the meter will read HALF scale deflection, and if the BLUE button was held down during RESET, then it will read FULL scale deflection.
These two settings are used to calibrate the jig.
To SET-UP the sensor, use either TEST position and use the TEST LED.
This lets the processor ‘look’ at the sensor and continuously report its status to the TEST LED.
LED ON means that the source light has been seen, whilst LED OFF means it cannot be seen.
Without a camera in position adjust the window of the sensor with the 500K preset on the Op-amp until it toggles correctly when the beam is interrupted.