Spyder3 GigE Vision User Manual
03-032-20027-02 DALSA
42
Setting the Readout Mode
Refer to the Clearing Dark Current section, page 62, for more information on this feature.
Use this command to clear out dark current charge collected in the vertical transfer gates
immediately before the sensor is read out.
ReadoutMode
Auto. Clears dark current below ~ 45% of the maximum line rate.
DarkCurrent. Dark current clear. Always clears dark. Reduces the
maximum line rate.
ImmediateReadout. Immediate readout. Does not clear dark current.
(Default mode.)
• The vertical transfer gates collect dark current during the line period. This collected
current is added to the pixel charge. This additional charge is especially noticeable at
slower line rates.
• This value is saved with the camera settings.
• If the user is in DalsaExposureMode 2 or 7 and ReadoutMode 2, with
AcquisitionLineRateAbs at 45% of the maximum, and then ReadoutMode 1 is
selected, the following warning will be displayed, but the AcquisitionLineRateAbs value
will not be changed: Warning 09: Internal line rate inconsistent with readout time> The
effect in both internal and external line rate modes is that an EXSYNC is skipped and,
therefore, the output will be at least twice as bright.
Related Commands: DALSAExposureMode, AcquisitionLineRateAbs
Setting the Line Rate
Sets the camera’s line rate in Hz. Camera must be operating in exposure mode 2 or 7.
AcquisitionLineRateAbs = line rate in Hz.
Desired line rate in Hz. Allowable values are:
1k 1 tap: 300-36000 Hz
1k 2 tap: 300-68000 Hz
2k 1 tap: 300-18500 Hz
2k 2 tap: 300-36000 Hz
4k 2 tap: 300-18500 Hz
Related Commands: DALSAExposureMode, ExposureTimeAbs
Setting the Exposure Time
Sets the camera’s exposure time in µs. Camera must be operating in mode 2, 6, or 8.
ExposureTimeAbs = exposure time in µs. Allowable range is 3 to 3300
µs.*
• If you enter an invalid line rate frequency, an error message is returned.
• *The exposure time range is based on the current line rate.
Related Commands: DALSAExposureMode, AcquisitionLineRateAbs
i
Applies to Modes 2 and
7
i
Applies to Modes 2 and
8
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