8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 55
8.
Features
8.1.
I/O Control
8.1.1.
Input Mode Operation
1)
Configuring Line as input
The MARS-GT series camera has two input signals: Line0, Line2. In which the Line0 is uni-directional
opto-isolated input, Line2 are bi-directional lines which can be configured as input or output.
The camera's default input is Line0 when the camera is powered on. Line2 is input by default, which can
be configured to be input or output by LineMode.
2)
Input Debouncer
In order to suppress the interference signals from hardware trigger, the MARS-GT series camera has the
hardware trigger filtering feature, including rising edge filtering and falling edge filtering. The user can set the
trigger filter feature by setting the " TriggerFilterRaisingEdge " and the " TriggerFilterFallingEdge ". The range
of the trigger filter feature is [0, 5000] μs, step: 1μs.
Example 1: Setting the rising edge filter width to 1ms, the pulse width less than 1ms in the rising edge will
be filtered out, as shown in Figure 8-1:
Input Signal
Debouncer
Valid Signal
Filter Width
1ms
Filter Width
1ms
Filter Width
1ms
Filter Width
1ms
Figure 8-1 Input debouncer schematic diagram
3)
Trigger Delay
The MARS-GT series camera has trigger delay feature. The user can set the trigger delay feature by
setting "TriggerDelay". The range of the trigger delay feature is [0, 3000000] μs, step: 1μs.
Example 1: Setting the trigger delay value to 1000ms, and the trigger signal will be valid after 1000ms
delay, as shown in Figure 8-2.
