User manual

Series 3700 System Switch/Multimeter Reference Manual Section 13: Instrument Control Library (ICL)
3700S-901-01 Rev. C / July 2008 13-173
dmm.threertd
Example
To set the type of three-wire RTD for PT3916:
dmm.func = "temperature"
dmm.transducer = dmm.TEMP_THREERTD
dmm.threertd = dmm.RTD_PT3916
dmm.threshold
Attribute
Indicates the threshold range.
Usage
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.
Remarks
This attribute is only valid when dmm.func is equal to:
"frequency"
"period"
"continuity"
All other configurations generate an error and return nil when queried.
For "frequency" and "period", this refers to a threshold voltage range (0 to 303, default
10). For "continuity", it refers to a threshold resistance in ohms (1 to 1000, default 10).
Errors will bet generated if the parameter value does not make sense for selected
function.
Changing functions with dmm.func (on page 13-137) will reflect the threshold setting
for that function.
The factory default and dmm.reset() (on page 13-161) function value is 10 for all
functions that support this attribute.
Example
To set the threshold range for frequency to 30:
dmm.func = "frequency"
dmm.threshold = 30