Camera interfaces
76
Mako U Technical Manual V1.1.3
Opto-isolated I/Os
The Mako U camera has opto-isolated I/Os:
•
In 1
•
Out 1
Input description
The input can be connected directly to the system for voltages up to 24 VDC.
An external resistor is not necessary.
Input levels
Input timing delay and minimum pulse width
The input delay is part of the entire trigger latency. For trigger latency values, see
The minimum pulse width for Mako U cameras is:
The input signal was driven with 3.3 VDC and no external additional serial resistor.
Figure 27: Opto-isolated input, block diagram
Parameter
Value
U
in
(low)
0 to 1.0 VDC
U
in
(high)
3 to 24 VDC
Undefined levels
1.0 to 3 VDC
Current (constant-current source)
3 to 4 mA
Table 29: Opto-isolated input, parameters
Figure 28: Opto-isolated input, minimum pulse width
In 1
Pin 3
Isolated GND
Pin 5
External Internal
I
F
0
t
44 μs
6 μs
20 kHz
