8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 123
8.
Features
8.1.
I/O Control
8.1.1.
Input Mode Operation
1)
Configuring Line as input
The MER-G-P/MER-G series camera has three input signals: Line0, Line2, and Line3. In which the Line0
is uni-directional opto-isolated input, Line2 and Line3 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 and Line3 are 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 MER-G-P/MER-G 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 MER-G-P/MER-G 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.
