Section 9
:
Instrument Control Library (ICL)
Series 3700 System Switch/Multimeter Reference Manual
9-114
Document Number: 3700S-901-01 Rev. A / August 2007
dmm.rtdbeta
Attribute
Indicates the user beta value for user type RTD.
Usage
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.
Remarks
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
dmm.func
(on page 9-91) has no effect on this setting.
The factory default and
dmm.reset
(on page 9-112) function value is 0.111.
Also see
dmm.rtdalpha
(on page 9-113)
dmm.rtddelta
(on page 9-114)
dmm.rtdzero
(on page 9-115)
Example
To set user beta constant for RTD to 0.3:
dmm.func = "temperature"
dmm.rtdbeta = 0.3
dmm.rtddelta
Attribute
Indicates the user type RTD delta value.
Usage
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.
