User Interface Commands
FOT Lab Kit User’s Manual 4-7
AO Analog Output Offset
Set the temperature offset (minimum reported temperature) for
analog output voltage. Along with the Analog Scaling Factor (AS
command) the AO command sets the parameters for the analog
output voltage range.
The native range for analog output channels is 0.00 to 10.00V. The
analog temperature offset is expressed in degrees (using the
specified system units). By adjusting the temperature offset it is
possible to set the floor of the analog output range i.e. the
temperature corresponding to 0.00V output.
V
out
= (AS/1000) * (T
measured
- AO)
Where:
AO = AnalogOffset = Minimum analog output voltage
corresponding to minimum reported temperature
AS = Analog Scaling Factor, mV/deg
(see AS command, page 4-8)
V
out
= Analog output voltage
T
measured
= Temperature measured at input
The default temperature offset value is equivalent to the minimum
temperature supported by the device.
See examples in description of AS command, page 4-8.
Information Request:
Syntax: <Esc>AO ? <CRLF>
Response: AO = offset in degrees
Example: AO = -30
o
C
Command Parameters:
Syntax: <Esc>AO = offset <CRLF>
Range:
This value is not range checked. Use care in selection of parameter
value.
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