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Camera Performance and Features
Use exposureTimeSelector to select whether to set the exposure time of each row independently or all
to the same value. exposureDelay is only configurable when in Sequential exposure mode. Adjusting
the exposure will result in a temporary loss of LVAL (8 lines) while the sensor is re-configured.
Timed Exposure Mode
Also called Global Reset Mode, the exposure begins when the line trigger occurs. If some rows have
shorter exposure times then they are held in reset longer such that all the rows finish exposing at the
same time and read out begins.
The minimum exposure time depends on the number of rows being read out. The maximum time is
1,500
µ
s. The minimum line period is the largest exposure time + 0.83
µ
s. With internal trigger mode
the line rate will be decreased as necessary if the exposure time is increased. Similarly the exposure
times will be decreased as necessary if the line rate is increased. If this happens the ratio between the
different row exposure times will be maintained (e.g. to maintain white balance). In external trigger
mode the maximum line rate will be limited by the current exposure time.
Sequential Exposure Mode
In this mode the rows are exposed in order: 0, 1, 2, 3. Use this for multi-spectral imaging using strobe
illumination. In this mode the delay before the exposure can be configured for each row. The counters
are smaller in this mode and so the maximum delay or exposure time is 45.48
µ
s. Similar to timed
mode, the sum of the delays and exposure times will limit the line rate.
Strobe lighting is synchronized using the General Purpose Outputs in the Digital IO Control
category. Set the row with the LineSelector feature. Set the outputLineSource to On. And then set
the outputLinePulseDelay, outputLinePulseDuration, and LineInverter.
Exposure Time Selector
See the section Camera Control Category in Appendix A for GenICam features associated with this
section and how to use them.
Relevant Feature: ExposureTimeSelector
The Exposure Time Selector allows the user to set the exposure time of each line individually or all
to the same exposure time. Note: If TDIstagesSelector is set to 2 or 3 all lines will automatically
be set to the same exposure time.
Measuring Exposure Time
See the section Camera Control Category in Appendix A for GenICam features associated with this
section and how to use them.
Relevant Feature: Measured Exposure Time
Use the Measure Exposure Time command to measure the camera’s internally generated exposure
time.