In Free-Run Programmable Mode - Basler A102K User Manual

3.2.2.1 Recommendations for Controlling Exposure

in Free-run Programmable Mode

When using the free-run programmable mode to control exposure, several general guidelines
must be followed:
• The minimum setting for Timer 1 is 15 µs.
• The minimum setting for Timer 2 is 15 µs.
• In free-run mode, the period of the internal control signal is equal to the sum of the Timer 1
setting plus the Timer 2 setting.
• If the AOI and Vertical Binning features are not being used, the sum of the Timer 1 setting
plus the Timer 2 must be greater than 67,500 µs.
• If the AOI feature is being used, the sum of the Timer 1 setting plus the Timer 2 setting must
be greater than 1/Maximum Frame Rate where the maximum frame rate is determined by the
formula in Section 3.8.2.1 on page 3-26.
• If the Vertical Binning feature is being used, the sum of the Timer 1 setting plus the Timer 2
setting must be greater than 1/Maximum Frame Rate where the maximum frame rate is
determined by the formula in Section 3.8.2.2 on page 3-26.
If you are using the camera configuration tool CCT+ to set up the free-run program-
mable mode, you will enter a frame rate and an exposure time. Once you have en-
tered these numbers, the value for Timer 1 and Timer 2 will be automatically
calculated and sent to the camera. If one of the guidelines listed above is violated,
an error message will appear.
When the camera is operating in free-run, external control of exposure start is not
possible. In free-run, the camera generates all control signals internally. The camera
determines when each exposure will start and controls the length of the exposure
time.
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BASLER A102
DRAFT
Operation and Features
3-11