Dalsa C1240, User Manual

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Nano Series GigE Vision Camera Operational Reference • 119
Reset Exposure Alignment Overview
Sensor timing is reset to initiate exposure when a valid trigger is received. Readout is sequential to
exposure, reducing the maximum achievable frame rates. That is, a trigger received during
exposure or readout is ignored since data would be lost by performing a reset.
Exposure Timing for Sony Models
Sony sensor models support both Synchronous Mode and Reset Mode exposure alignment. Timing
diagrams and relevant specifications are specified below.
Synchronous Mode – Single Frame Exposure
See the specification table below for the timing variables A, B and C shown in the graphic.
Exposure Time
ReadOut Time
ExposureAlignment = Synchronous
ExposureStart Event
ExposureEnd Event
FrameTrigger Event
Invalid Trigger Period
FrameStart Event
ExposureDelay
a
b
c
ReadOut Start Event
Timestamp Latched
Synchronous Mode – 2 Frame Burst Exposure
See the specification table below for the timing variables A, B, C and D shown in the graphic.
Exposure Time 1
ReadOut Time 1
ExposureAlignment = Synchronous
ExposureStart Event
FrameTrigger Event
Invalid Trigger Period
FrameStart Event
ExposureDelay
a
b
c
ReadOut Start Event
Timestamp Latched
Exposure Time 2
ReadOut Time 2
c
b
ReadOut End Event
Trigger BurstMode = 2 frames
FrameStart Event
ReadOut Start Event
ExposureStart Event
Exposure Time
d
ExposureEnd Event