Keithley 3700 series Reference Manual page 259

Series 3700 System Switch/Multimeter Reference Manual
dmm.rtddelta
Remarks
Also see
Example
dmm.rtdzero
Attribute
Usage
Remarks
Document Number: 3700S-901-01 Rev. A / August 2007
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 delta is 0 to 5.
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.rtdbeta (on page 9-113)
dmm.rtdzero (on page 9-115)
To set user delta constant for RTD to 3:
dmm.func = "temperature"
dmm.rtddelta = 3
Indicates the user type RTD zero value.
To read the user type RTD zero value:
value = dmm.rtdzero
value: Represents the present user type RTD zero value.
To write the user type RTD zero value:
dmm.rtdzero = value
value: Represents the desired user type RTD zero value.
This attribute is only valid when dmm.func = "temperature". All other
configurations generate an error and return nil when queried. Errors will also be
generated if the parameter value is out of range. The valid range for user zero is 0 to
10000.
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
Section 9: Instrument Control Library (ICL)
dmm.func (on page 9-91) has no effect on this setting.
(on page 9-112) function value is 1.507.
dmm.func (on page 9-91) has no effect on this setting.
(on page 9-112) function value is 100.
9-115