THORLABS DCC1645C - Digital Input (Trigger) Circuit

© 2013 Thorlabs GmbH488
DCx Cameras
5.5.1.2 Digital Input (Trigger) Circuit
Digital input specifications
USB board revision *)
1.2
2.0 or higher
Min.
Max.
Min.
Max.
Level low
0
2
0
2
V
Level high
9
24
5
24
V
Voltage range
0
30
0
30
V
Trigger pulse width (edge)
100
-
100
-
µs
Trigger edge steepness
35
35
V/ms
Breakdown voltage
50
50
V
Input current
10
-
10
-
mA
Note
*
)
For information on how to determine the USB board revision, please refer to the DCx Driver Compatibility
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
Wiring of the trigger connector
58