Dalsa Genie HC1024, User Manual

Page: 53 / 141

Genie HM-HC Series-GigE Vision Camera Operational Reference
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51
Synchronization Timing
Genie supports two types of sensor synchronization used to align the exposure to sensor timing:

Synchronous Mode : Exposure is synchronous to the line timing of the sensor. Exposure granularity is 1µs and
the readout can be concurrent to the exposure for the fastest possible frame rate.

Reset Mode : Timing is reset to initiate exposure of next frame. Exposure granularity is 1µs, but readout must
be sequential to exposure, reducing the maximum achievable frame rate.
Synchronous Mode

Synchronous mode starts the exposure period aligned to the sensor horizontal line timing and the programmable
duration steps are 1µs.

Exposure duration is from a minimum of 56µs up to 4 sec.

In this mode, sensor exposure and sensor readout of the previous frame's exposure occur simultaneously. This
allows operating the sensor up to its maximum frame rate.

Any trigger received before the end of the exposure is ignored. The application can elect to receive messages
about ignored triggers. See
" Events " on page 71 .

Since the external trigger is asynchronous with the Genie horizontal line timing, the frame exposure start is
subject to 1 horizontal line jitter.
Synchronous Mode Timing example for Genie