Digital Input (Trigger) Circuit - THORLABS DCU223x Operation Manual And Sdk

DCx Cameras

5.5.1.2 Digital Input (Trigger) Circuit

Digital input specifications
USB board revision *)
Level low
Level high
Voltage range
Trigger pulse width (edge)
Trigger edge steepness
Breakdown voltage
Input current
Note
* ) For information on how to determine the USB board revision, please refer to the
chapter.
For interpreting the trigger signal, either the negative or the falling edge can be used. The digital input is
galvanically isolated using an opto coupler to protect the camera and the PC against surges. Only DC voltages may
be applied to the digital input.
Digital input wiring
488
1.2 2.0 or higher
Min. Max. Min.
0 2 0
9 24 5
0 30 0
100 - 100
35 35
50
10 - 10
Wiring of the trigger connector
Max.
2 V
24 V
30 V
- µs
V/ms
50 V
- mA
DCx Driver Compatibility
© 2013 Thorlabs GmbH
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