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Bn=<value><EOS> sets b
0
, b
1
, b
2
, or b
3
for the thermistor characterization.
n is a number from 0 to 3.
7.3.2.2 Testing the Characterization
The following command can be used to test the probe characterization:
CO=<value><EOS> returns a temperature calculated from resistance
The 1504 will respond with a temperature value computed from the given resis
-
tance value. The temperature is given in the currently selected unit. As an ex
-
ample, if the Callendar-Van Dusen characterization is selected with IEC-751
coefficients and the selected unit is Celsius, sending this command with a resis
-
tance value of 138.5 will return a temperature value of 100.0°C.
7.3.3 Sample Commands
The following commands ralate to the measurement process.
7.3.3.1 Setting the Filter
The filter helps to reduce variations in the measurements. The filter can be set
remotely using the command:
FI=<value><EOS> sets the filter time constant
FI=0<EOS> disables the filter
The value is the filter time constant in seconds. It must be between 0 and 60 in-
clusive. A value of 0 disables the filter.
7.3.3.2 Setting the Power Saver
Activating the power saver can conserve power which is an advantage when op
-
erating from a battery. The power saver causes the display to blank if no front
panel buttons are pressed for a given number of minutes. The power saver can
be set using the commands:
PS=<value><EOS> sets the power saver time in minutes
PS=0<EOS> or PS=OF<EOS> disables the power saver
The value is the power saver time-out period in minutes. It must be between 0
and 60 inclusive. It is automatically rounded to a multiple of five minutes. A
value of 0 or OFF disables the power saver.
7.3.4 Communication Commands
The following commands relate to external communications.
1504 Thermometer Readout
User’s Guide
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