Instruction manual
Guppy PRO Technical ManualV4.1.0
124
Controlling image capture
Exposure time of first row is: T
exp
Exposure time of second row is: T
exp
+ T
row
Exposure time of n-th row is: T
exp
+ (n-1) x T
row
Thus the image gets brighter with every row. To prevent this the customer should
use:
• flash (when all rows are overlapping, see drawing above)
• or a mechanical/LCD shutter
Bulk trigger (Trigger_Mode_15)
Trigger_Mode_15 is a bulk trigger, combining one external trigger event with
continuous or one-shot or multi-shot internal trigger.
It is an extension to the IIDC trigger modes. One external trigger event can be
used to trigger a multitude of internal image intakes.
This is especially useful for:
• Grabbing exactly one image based on the first external trigger.
• Filling the camera's internal image buffer with one external trigger with-
out overwriting images.
• Grabbing an unlimited amount of images after one external trigger (sur-
veillance)
The figure below illustrates this mode.
Note
Trigger_Mode_15 is only available for Guppy PRO CCD cameras.
Figure 67: Trigger_Mode_15 (bulk trigger)
External Trigger input, after inverting optocoupler
N x image; N: continuous, one_shot, multi_shot
Trigger_Mode_15 (Bulk trigger)