BOBCAT Hardware User’s Manual
Imperx, Inc.
Rev. 1.0
6421 Congress Ave.
5/4/2010
Boca Raton, FL 33487
+1 (561) 989-0006
81 of 212
-
“
Ignore
” – the next rigger will be ignored, and the camera will continue its
present operation.
-
“
Accept
” – the next trigger will be used. The camera will stop the present
operation, will reset and the new trigger cycle will start.
-
“
Accept after Exposure
” – the next rigger will be ignored while the camera
is exposing the image. The next trigger will be used only after the image
exposure based on the previous trigger has been completed. The camera will
stop the present operation, will reset and the new trigger cycle will start.
4. “
Exposure Time
” – the exposure for all frames can be set in two ways:
-
“
Pulse Width
” – the trigger pulse width (duration) determines the exposure.
-
“
Internal
” – the camera internal exposure register determines the exposure.
A mid exposure pulse is generated in this mode.
5.
“
Frames captured
” – the number of frames captured after the trigger pulse
can be programmed from 1 to 65530 frames, or to be free-running.
CAUTION NOTE
1. The de-bounce interval MUST be bigger than the trigger pulse duration. Adjust
the interval accordingly.
2.6.3
Trigger Strobe Control
Along with the shutter pulse, the camera can send one strobe pulse for
synchronization with an external light source. The user can set the strobe pulse
duration and the delay with respect to the trigger pulse active edge. The maximum
pulse duration and the maximum delay can be set up to 16777215 us with 1.0us
precision. The strobe pulse can be assigned to “Strobe 1” or “Strobe 2. If the
number of frames captured is more than 1, and the user wants to enable the strobe
for the next frames, he/she has to using the camera strobe – please refer to “Strobe”
section for more information.
2.6.4
Triggering modes
A.
Standard Mode
When the standard triggering mode is enabled, the camera idles and waits for a
trigger signal. Upon receiving the external trigger signal, the camera clears the
horizontal and vertical registers, sends a shutter pulse to clear the pixels and starts
integration – Figure 2.14. Upon receiving the trigger signal the camera starts
integration for the frame, completes the integration, and transfers the information to
the vertical registers and then captures the image is being read out. There is no
delay between the trigger rising edge and the exposure start. The exposure is set by
