User Interface Commands
4-8 FOT Lab Kit User’s Manual
AS Analog Output Scaling
Set the scaling factor for analog output voltage. Along with the
Analog Offset (AO command) the AS command sets the parameters
for the analog output voltage range.
The native range for analog output channels is 0.00 to 10.00V. The
scaling factor is expressed in millivolts per degree. By adjusting the
scaling factor it is possible to adjust the working range of the analog
outputs as they apply to the input temperature range.
V
out
= (AS/1000) * (T
measured
- AO)
Where:
AO = AnalogOffset = Minimum analog output voltage
corresponding to min. reported temperature
(see AO command, page 4-7)
AS = Analog Scaling Factor (in millivolt per degree,
mV/deg)
V
out
= Analog output voltage
T
measured
= Temperature measured at input
The default scaling factor value is based upon the temperature
range supported by the device.
Example using standard-configuration defaults:
Information Request:
Syntax: <Esc>AS ? <CRLF>
Response: AS = scaling factor in mV / degree
Example: AS = 27.7778
Parameter Modification:
Syntax: <Esc>AS = factor<CRLF>
Range:
This value is not range checked. Use care in selection of parameter
value.
Minimum Input
Temperature
Maximum Input
Temperature
VOutput Scaling
Factor
Temperature
Offset
Minimum
Output Voltage
Maximum
Output Voltage
Output
Voltage Range
-30
o
C330
o
C 27.7778mV /
o
C-30
o
C 0V 10.0V 10.0V
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