16
7.4.3
:SENSe:AUTOrange
Set average of the selected device. Example:
Write
:SENSe:AUTOrange 0,1
ASCII CRLF
Read
Not Applicable
Auto-range of the 2D imager is set on. Auto-range 0 is off, auto-range 1 is
on.
Device
Description
0
2D imager
1
Spectrometer
2
Luminance meter
Note: not all Atlas configurations have the luminance/flicker unit incorporated.
7.4.4
:SENSe:MAXInt
Set maximum allowable integration time when in auto-range mode. This is
to avoid the device will measure for an extreme long time when measuring
in very low light level conditions. Example:
Write
:SENSe:MAXInt 1,3000000
ASCII CRLF
Read
Not Applicable
Integration time of the 2D imager is set to 10.000 us (10ms). Theoretically
the limit is the same as the SENSe:INT limit and we don’t want to limit the
user in any way. Therefore we give a recommendation based on
experience, see values below.
Device
Description
Recommended maximum int time [us]
0
2D imager
10.000.000
1
Spectrometer
6.000.000
2
Luminance meter
1.000.000
Note: not all Atlas configurations have the luminance/flicker unit incorporated.
7.4.5
:SENSe:ADJMin
Set the desired target level of auto-range adjustment. This is actually the
scale of the Analog Digital Converter (ADC) normalized to a scale of 0-
100%. A good setting is related to the signal noise ratio (S/N) of the device
in combination with level of the ADC (how much light fell on it). We also
refer to this as
saturation level
. In order to get a good measurement you
need a good S/N. The auto-range algorithm automatically tries to achieve
to desired saturation level (which has a certain S/N ratio) by changing the
integration time. Example:
Write
:SENSe:ADJMin 1,40
ASCII CRLF
Read
Not Applicable
Target adjustment level of the spectrometer is set to 40%.
Device
Description
Min. level
Max. level
Recommended
level
0
2D imager
5
70
20~30
1
Spectrometer
5
70
30~40
2
Luminance
meter
5
70
8~12
Note: not all Atlas configurations have the luminance/flicker unit incorporated.
Try to use our recommended settings. These are based on long history of
experience.
Содержание atlas
Страница 1: ...atlas 2D imaging system operating manual ...