Keithley 3700 series Reference Manual page 265

Series 3700 System Switch/Multimeter Reference Manual
dmm.threshold
Remarks
Example
dmm.transducer
Attribute
Usage
Remarks
Example
Document Number: 3700S-901-01 Rev. A / August 2007
This attribute is only valid when dmm.func is equal to:

―frequency‖

―period‖

―continuity‖
All other configurations generate an error and return nil when queried.
For ―frequency‖ and ―period‖ this refers to a threshold voltage range (0 to 1010, default
10). For ―continuity‖ it refers to a threshold resistance in ohms (1 to 1000, default 10).
Errors will get generated if parameter value does not make sense for selected function.
Changing functions with dmm.func has no effect on this setting.
The factory default and dmm.reset function value is 10.
To set the threshold range for frequency to 30:
dmm.func = "frequency"
dmm.threshold = 30
Indicates the transducer type.
To read the transducer type:
value = dmm.transducer
value: Represents the present transducer type.
To write the transducer type:
dmm.transducer = value
value: Represents the desired transducer type.
For value, use one of the following:

dmm.TEMP_THERMOCOUPLE or 1

dmm.TEMP_THERMISTOR or 2

dmm.TEMP_THREERTD or 3

dmm.TEMP_FOURRTD or 4
This attribute is only valid when dmm.func = ―temperature‖. All other configurations
generate an error and return nil when queried.
Changing functions with dmm.func has no effect on this setting.
The factory default and dmm.reset function value is dmm.THERMOCOUPLE.
To set transducer to thermistor type:
dmm.func = "temperature"
dmm.transducer = dmm.TEMP_THERMISTOR
Section 9: Instrument Control Library (ICL)
9-121