CHEETAH Hardware User’s Manual
Imperx, Inc.
Rev 1.7
6421 Congress Ave.
8/26/2016
Boca Raton, FL 33487
+1 (561) 989-0006
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“
Pulse Width
” – the trigger pulse width (duration) determines the exposure
subject to limitations.
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“
Internal
” – the camera internal exposure register determines the exposure.
CAUTION NOTE
1.
The de-bounce interval MUST be smaller than the trigger pulse duration. Adjust
the interval accordingly.
2.
When Triggering is enabled “Internal Exposure timing” is not active
2.5.3 Triggering modes
A.
Exposure Control
When trigger mode is enabled, the exposure time can be set using either the internal
exposure timer or the trigger pulse width.
When the trigger mode is selected, the camera idles and waits for a trigger signal.
Upon receiving the trigger signal, the camera starts integration for the frame,
completes the integration and the image is readout. If the next trigger is received
prior to completion of the readout, the exposure and readout will be overlapped as
shown in Figure 16 and 17. The exposure time can be set manually using the internal
exposure register setting as shown in Figure 16 or set by the duration of the trigger
pulse as shown in Figure 17. The minimum exposure time using the trigger pulse
width is 2 micro-seconds.. Upon completing the readout, if another trigger pulse has
not been received, the trigger cycle is completed and the camera idles awaiting the
next trigger pulse.
Figure 16:
Trigger Mode (Internal Exposure Control)