xiJ - Technical Manual Version 0.06
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4.1.5.2.1.
Triggered mode
This mode gives lower FPS compared to
Free-Run
mode. Sensor support two modes of exposure which have impact on camera
signaling.
Sensor timing in global reset release mode
figure 4-9, acquisition mode
–
triggered global reset release
In this mode the timing depends on sum of:
•
Input transition time (t
itr
), depends on:
o
Digital Input Delay - time for changing internal circuit to active state. It is constant for each camera model.
For this camera it is negligible.
o
Trigger delay (t
delay
)
–
delay set in camera to postpone trigger to sensor.
•
Exposure time (t
exps
)
–
Exposure time.
•
Data Readout time (t
rd
)
–
Depends on mode of operation, no direct calculation possible.
•
Post image timeout (t
pos
)
–
time after image readout need by sensor to be ready for next exposure.
The timing strongly depends on camera settings. Most of the times can be calculated using
https://www.ximea.com/support/tools/camcalc/#/camera/MJ042MR-GP-P6-BSI.
Trigger to exposure delay
Mode
TRG voltage [V]
Trigger to exposure delay [ns]
All modes
5
500
All modes
10
315
table 4-5, delay in global reset release mode
Sensor timing in rolling shutter mode
Similar to global reset release mode, except exposure is done in rolling shutter mode
figure 4-10, acquisition mode
–
triggered rolling shutter mode
