C.6 Calibration of the FPN Correction
C.5.1
Configuration of the encoder AB signals
The A and B signal of the encoder need to be connected to LineIn0 and LineIn1. It can be
connected in either way.
1.
Configure the
LineFormat
of
LineIn0
and
LineIn1
according to the encoder output standard.
2.
Configure
EncoderSourceA
and
EncoderSourceB
of the
EncoderControl
respectively. One must
be
LineIn0
and the other
LineIn1
or vice versa, depending how the encoder is connected
to the camera.
3.
Configure
EncoderMode
,
EncoderDivider
and
EncoderOutputMode
accordingly.
C.5.2
Configuration of the encoder Z signal
If used, the encoder Z signal must be connected to LineIn2. The Z signal can be used to reset
the encoder
1.
Configure the
LineFormat
of
LineIn2
according to the encoder output standard.
2.
If the Z signal is used to reset the encoder, the
EncoderResetSource
must be set to
LineIn2
.
C.5.3
Configuration of the encoder ALARM signal
If used, the encoder ALARM signal must be connected to LineIn3. The IO standard of this input
is
TTLTerminated120
and can’t be changed.
1.
The LineIn3 must be inverted by setting the
LineInverter
to
True
, when the ALARM signal
is low active.
2.
Set the
EncoderAlarmMode
to
True
.
3.
The parameter
EncoderAlarmUpdate
needs to be performed in order to get current value of
EncoderAlarmStatus
.
4.
When an alarm has occured the parameter
EncoderAlarmAcknowledge
will acknowledge the
pending alarm.
C.6
Calibration of the FPN Correction
The camera is calibrated in the factory with the default camera settings. If the camera is
operated with an exposure time that differs greatly from the factory defaults then it makes
sense to recalibrate the FPN correction of the camera. The calibration of the FPN correction
requires the following steps:
1.
Setup the camera to the mode where it will be usually used, e.g. Exposure time. The
region of interest should be the full sensor.
2.
Set the
Gain
and DigitalGain values to 1.0.
3.
Wait until the camera has achieved working temperature.
4.
Close the lens of the camera.
5.
Check the value of the property
Average_Value
(in category
Photonfocus
). Change the
property
BlackLevel
(in category
AnalogControl
) until
Average_Value
is between 240 and 400
DN, if PreGain is correctly set, see also Section 12.3. The property
Average_Value
can be
updated by clicking on the property
Average_Update
(in category
Photonfocus
).
6.
Click on
Correction_SetBlackRef
(in category
Photonfocus/Calibration
). Wait until the
command has been finished.
MAN093 08/2021 V1.1
141 of 143
Summary of Contents for MV4 Series
Page 8: ...CONTENTS 8 of 143 MAN093 08 2021 V1 1 ...
Page 12: ...1 Preface 12 of 143 MAN093 08 2021 V1 1 ...
Page 40: ...4 Image Acquisition 40 of 143 MAN093 08 2021 V1 1 ...
Page 42: ...5 Exposure Control 42 of 143 MAN093 08 2021 V1 1 ...
Page 52: ...6 Counter Timer 52 of 143 MAN093 08 2021 V1 1 ...
Page 64: ...10 Image Format Control 64 of 143 MAN093 08 2021 V1 1 ...
Page 66: ...11 Frame Rate 66 of 143 MAN093 08 2021 V1 1 ...
Page 82: ...12 Pixel Data Processing 82 of 143 MAN093 08 2021 V1 1 ...
Page 92: ...12 Pixel Data Processing 92 of 143 MAN093 08 2021 V1 1 ...
Page 96: ...13 Precautions 96 of 143 MAN093 08 2021 V1 1 ...
Page 120: ...16 Troubleshooting 120 of 143 MAN093 08 2021 V1 1 ...
Page 126: ...19 Support and Repair 126 of 143 MAN093 08 2021 V1 1 ...
Page 128: ...20 References 128 of 143 MAN093 08 2021 V1 1 ...