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 granularity is 1µs.
•
In the case of the Genie M640, a horizontal line occurs every 31.77µs.
•
Exposure duration is from the sensor minimum (see Genie Sensor Overview) up to 16
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 76.
•
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 M640
56
•
Operational Reference
Genie Monochrome Series-GigE Vision Camera