Color Exposure Time Guidelines; Set Line Rate - Teledyne Piranha4 Quadlinear User Manual

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Color Exposure Time Guidelines

The camera has no limitations on the combinations of the exposure times available for each color except
the maximum of 3 ms and the minimum of 7μs exposure times. Operating the camera with the conditions
stated below will give the user optimum image performance. Operating the camera beyond the stated
limits may be possible but may also compromise image quality.
Tri-Linear Ideal Operating Conditions
For optimum image performance all of the following must be true
1. Blue ≥ Red by 1μs
2. Blue ≥ Green by 1μs or Green ≥ Blue by 1μs
3. Red ≥ Green by 1μs or Green ≥ Red by 1μs
Quad-Linear Ideal Operating Conditions
For optimum image performance all of the following must be true
1. Blue ≥ Red by 1μs
2. Green ≥ Mono by 1μs
3. Blue ≥ Green by 1μs or Green ≥ Blue by 1μs
4. Blue ≥ Mono by 1μs or Mono ≥ Blue by 1μs
5. Red ≥ Green by 1μs or Green ≥ Red by 1μs
6. Red ≥ Mono by 1μs or Mono ≥ Red by 1μs

Set Line Rate

To set the camera's line rate use the line rate parameter, part of the Sensor Controls set. This feature can
only be used when the camera is in Internal mode—that is, when the start line trigger is disabled (Trigger
Mode Off).
Note: The line rate must be less than 1 / (Exposure time + 1500ns). Entering a value that violates this
condition will return an error ("Invalid Parameter"). You must adjust these two parameters in the correct
sequence to maintain this condition.
If the external line rate exceeds 70 kHz the camera will continue to output data at its maximum line rate
of 70 kHz. Though no image artefacts associated with over-speed will occur, you may notice that under
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Piranha4 RGB + NIR / Mono Camera User's Manual
Teledyne DALSA