User manual

Series 3700 System Switch/Multimeter Reference Manual Section 13: Instrument Control Library (ICL)
3700S-901-01 Rev. C / July 2008 13-137
dmm.filter.window
Also see
dmm.filter.enable (on page 13-134), dmm.filter.count (on page 13-134), dmm.filter.type
(on page 13-135).
Example
To set the filter window for 2-wire ohms to 0.25:
dmm.func = "twowireohms"
dmm.filter.window = 0.25
dmm.fourrtd
Attribute
Indicates the type of 4-wire RTD being used.
Usage
To read the 4-wire RTD type:
value = dmm.fourrtd
value: Represents the present type for 4-wire RTD
To write the 4-wire RTD type:
dmm.fourrtd = value
value: Represents the desired type for 4-wire RTD. Use one of the following for
values:
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
Remarks
This attribute is only valid when dmm.func = "temperature". All other configurations
generate an error and return nil when queried. When the function is temperature, the
4-wire RTD is only used when the transducer type is 4-wire RTD (see dmm.transducer
(on page 13-173)). For all other transducer types, the setting will be updated but
ignored until the transducer type is set for 4-wire RTD.
Changing functions with dmm.func (on page 13-137) will reflect the 4-wire RTD setting
for that function.
The dmm.reset() (on page 13-161) function will set this attribute to dmm.RTD_PT100.
Example
To set the type of 4-wire RTD for PT3916:
dmm.func = "temperature"
dmm.transducer = dmm.TEMP_FOURRTD
dmm.fourrtd = dmm.RTD_PT3916