Performance
234
Alvium CSI-2 Cameras User Guide V2.8.1
Image transfer with rolling shutter cameras
Alvium 1500 C-210m/c, C-500m/c, 1800 C-1240m/c, and 1800 C-2050m/c
If acquisition is started and stopped in a short sequence, no image is transferred to
the host. The duration cannot be predicted, because it depends on various factors.
Frame rate jitter
Alvium 1500 C-120m/c, C-210m/c, C-500m/c, 1800 C-1240m/c, 1800 C-2050m/c
Generally, some parameters can be changed during exposure without affecting the
timing. For models with ON Semiconductor AR sensors and rolling shutter sensors,
a different behavior must be considered for
camera operation in freerun mode
without triggering
:
Changing parameters during exposure leads to frame rate jitter. When parameters
are entered, the next frame starts only after readout and sensor reconfiguration
delay are finished. When the camera is run in
ExposureAuto
mode, the actual
frame rate is less than the calculated value for the corresponding exposure time.
Consider frame rate jitter for your application, including a gap between
ExposureActive
signals.
Figure 97: Delayed exposure due to parameter changes
Parameter changes in triggered mode
on page 224 for more information.
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