THORLABS DCU22 Series User Manual

398 DCx camera
© 2010 Thorlabs
10.1.3
I/O Interface
10.1.3.1
Trigger Input Wiring (Trigger)
NOTE
The USB Board Rev. can be read out with the Camera Info
Table 21 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
For interpreting the trigger signal, either the positive or the negative 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.
Figure 102 Trigger connection
10.1.3.2
Digital Output Wiring (Flash)
The flash strobe is optically isolated to DCU and your PC on order to protect your equipment. It is
adapted for voltages up to 24V DC.
The output of the opto coupler can be used as open collector or open emitter output. This means the
strobe can be switched to ground or to a supply voltage. The strobe signal is active, when the
collector emitter switch is closed. Opto couplers solely can switch DC voltages. Do never switch AC
voltages.
In the following table the maximum charges for the output are specified.

THORLABS DCU22 Series Specifications

General

Brand	THORLABS
Model	DCU22 Series
Category	Security Camera
Language	English