Keithley 3700 series Reference Manual page 264

Section 9: Instrument Control Library (ICL)
dmm.threertd
Attribute
Usage
Remarks
Example
dmm.threshold
Attribute
Usage
9-120
Indicates the type of three-wire RTD being used.
To read the 3-wire RTD type:
value = dmm.threertd
value: Represents the present type for 3-wire RTD.
To write the 3-wire RTD type:
dmm.threertd = value
value: Represents the desired type for 3-wire RTD.
Use one of the following for value:

dmm.RTD_PT100 or 0 for type PT100

dmm.RTD_D100 or 1 for type D100

dmm.RTD_F100 or 2 for type F100

dmm.RTD_PT385 or 3 for type PT385

dmm.RTD_PT3916 or 4 for type PT3916

dmm.RTD_USER or 5 for user specified type
This attribute is only valid when dmm.func = "temperature". All other
configurations generate an error and return nil when queried.
Changing functions with
The dmm.reset (on page 9-112) function will set this attribute to dmm.RTD_PT100.
To set the type of three-wire RTD for PT3916:
dmm.func = "temperature"
dmm.threertd = dmm.RTD_PT3916
Indicates the threshold range.
To read the threshold setting:
value = dmm.threshold
value: Represents the present threshold setting.
To write the threshold setting:
dmm.threshold = value
value: Represents the desired threshold setting. The range for continuity is from 1 to
1000. For frequency and period, the range is from 0 to 303V.
Series 3700 System Switch/Multimeter Reference Manual
dmm.func (on page 9-91) has no effect on this setting.
Document Number: 3700S-901-01 Rev. A / August 2007