CinePlex v3 Manual - Plexon Inc

• Output Line # - dropdown selectable output line number, if any
• Signal Type - dropdown selectable values of Pulse, Low, or High
• Pulse Duration(s) - (only present if Signal Type is Pulse) dropdown selectable
values of 0.1, 0.2, 0.5, 1.0, 2.0, and 5.0.
3.2.2.5 Detection Latency
The time elapsed from the actual occurrence of an event occurs and when the
event is detected in the video is called detection latency. Detection latency is
determined by the user settings of frame rate, shutter open time, and detection
threshold.
3.2.2.6 Processing Latency
Processing latency is the time between the time the shutter closes on a frame in
which the event can be detected and the time the dependent output line is toggled.
Processing latency in current configuration of CinePlex systems is 13 to 14 milliseconds.
The worst case is when an event occurs during a shutter open time, but
is not detectable by CinePlex until the next frame due to high detection thresholds.
For these reasons, when digital outputs are needed for an experiment, shutter
time and frame rate should be set to the maximum usable while detection
thresholds should be set as low as possible.
3.2.2.7 Total Event Latency
Total event latency is the time between when an event occurs and when its dependent
digital output is generated. Thus, total event latency consists of detection
latency and processing latency.
3.2.3 Video Pane(s)
There may be up to two Video panes visible. The default setting is to have the
Video 1 pane visible. The Video pane(s) displays the video image(s) from the
camera(s). The user may optionally stretch the image to fill the size of the Video
pane(s).
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