Creating A Debouncing Filter At The Inputs - Matrix Vision mvBlueFOX3 Technical Manual

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20.5.3 Creating a debouncing filter at the inputs
In some cases, it is necessary to eliminate noise on trigger lines. This can become necessary when either
• the edges of a trigger signal are not perfect in terms of slope or
• if, because of the nature of the trigger signal source, multiple trigger edges are generated within a very short
period of time even if there has just been a single trigger event.
The latter one is also called bouncing.
Bouncing is the tendency of any two metal contacts in an electronic device to generate multiple signals as the
contacts close or open; now debouncing is any kind of hardware device or software that ensures that only a single
signal will be acted upon for a single opening or closing of a contact.
To address problems that can arise from these kinds of trigger signals MATRIX VISION offers debouncing filters at
the digital inputs of a device.
The debouncing filters can be found under "Setting -
LineSelector" (red box in Figure 1) for each digital input:
Base - Camera - GenICam -
CONTENTS
Digital I/O Control -
MATRIX VISION GmbH