CAMERAS FRAME GRABBERS IMAGING SOLUTIONS
BOBCAT Hardware User’s Manual
IMPERX
Rev. 2.0.9
6421 Congress Ave.
4/8/2014
Boca Raton, FL 33487
www.imperx.com
+1 (561) 989-0006
171 of 329
used the exposure control slider sets the exposure – Figure 2.15. The number of
frames captured is set to 1 and cannot be changed.
CAUTION NOTE
1.
The time interval between the trigger pulses must be greater than the
corresponding camera frame time. If the time between the triggers is shorter, the
frame read-out cycle will be interrupted and part of the frame will be lost.
DATA
EXPOSURE
STROBE
N + 2
DATA N - 1
DATA N
DATA N + 1
Exposure N
Exposure N+1
SHUTTER
TRIGGER
N + 1
N
Only if the main strobe is enabled
Figure 2.15 – Fast synchronized triggering - rapid capture
C.
Double Exposure Triggering
Double exposure allows two events (two images) to be captured in rapid succession
using a single trigger pulse. In this mode, the camera idles and waits for a trigger
signal to come from the selected source. Upon receiving the external trigger signal,
the camera clears the horizontal and vertical registers, and starts integration. There is
NO DELAY between the active trigger edge of the trigger pulse and the beginning
of the integration. Upon receiving the trigger signal the camera starts integration for
the first frame, completes the integration, transfers the information to the vertical
registers and then captures the second image. While capturing the second image the
first one is being read out. After exposing the second image, the information is
transferred to the vertical registers and read out – Figure 2.16. This completes the
current trigger cycle and the camera idles until the next trigger pulse. In this mode
the camera exposure can be controlled with the internal shutter or with the trigger
pulse width. The number of frames captured is set to 2 and cannot be changed. There
is NO DELAY between the frames captured.
The minimum time between the frames
is ~ 200 ns