Keithley 3700 series Reference Manual page 258

Section 9: Instrument Control Library (ICL)
dmm.rtdbeta
Attribute
Usage
Remarks
Also see
Example
dmm.rtddelta
Attribute
Usage
9-114
Indicates the user beta value for user type RTD.
To read the user type RTD beta value:
value = dmm.rtdbeta
value: Represents the present user type RTD beta value.
To write the user type RTD beta value:
dmm.rtdbeta = value
value: Represents the desired user type RTD beta value.
This attribute is only valid when dmm.func = "temperature". All other
configurations generate an error and return nil when queried. Also, get errors if
parameter value out of range. The valid range for user beta is 0 to 1.0.
NOTE The following attributes share common settings and apply to both 3 and 4-wire
RTDs: dmm.rtdalpha, dmm.rtdbeta, dmm.rtddelta, and dmm.rtdzero.
Therefore, when both 3 and 4-wire RTDs are set to USER type for RTD,
switching transducers between 3 and 4 will cause both to use the same
settings (for example, dmm.rtdalpha, dmm.rtdbeta). If unique settings are
desired, they must be changed, or if they are the same, use two different DMM
configurations.
Changing functions with
The factory default and dmm.reset
dmm.rtdalpha (on page 9-113)
dmm.rtddelta (on page 9-114)
dmm.rtdzero (on page 9-115)
To set user beta constant for RTD to 0.3:
dmm.func = "temperature"
dmm.rtdbeta = 0.3
Indicates the user type RTD delta value.
To read the user type RTD delta value:
value = dmm.rtddelta
value: Represents the present user type RTD delta value.
To write the user type RTD delta value:
dmm.rtddelta = value
value: Represents the user type RTD delta value.
Series 3700 System Switch/Multimeter Reference Manual
dmm.func (on page 9-91) has no effect on this setting.
(on page 9-112) function value is 0.111.
Document Number: 3700S-901-01 Rev. A / August 2007