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8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 94
8.
Features
MERCURY2 USB3 Vision camera supports a variety of standard and advanced functions. The function
support of different models varies slightly. Please refer to the DAHENG Cameras Feature List for details.
8.1.
I/O Control
The MER2/ME2P/ME2L/ME2S cameras have different available I/O (MER2/ME2P/ME2L: 8-pin connector,
ME2S: 6-pin connector), see details in 7.3.1 I/O Connector Pin Definition. I/O with the same signal
definition are also have the same features.
8.1.1.
Input Mode Operation
1)
Configuring Line as input
The camera's 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 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 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.