Series 3700A System Switch/Multimeter Reference Manual
Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018
11-221
Example 2
dmm.func = "temperature"
dmm.transducer = dmm.TEMP_THREERTD
dmm.rtdalpha = 0.005
dmm.configure.set("RTD_3wire")
dmm.transducer = dmm.TEMP_FOURRTD
dmm.rtdalpha = 0.007
dmm.configure.set("RTD_4wire")
dmm.configure.recall("RTD_3wire")
print(dmm.transducer, dmm.rtdalpha)
dmm.configure.recall("RTD_4wire")
print(dmm.transducer, dmm.rtdalpha)
This example sets unique alpha constants for 3-wire and
4-wire RTDs by creating two DMM configurations with
the settings.
Output:
3.00000
5.000000000e-03
4.00000
7.000000000e-03
Also see
(on page 11-166)
(on page 11-221)
(on page 11-222)
(on page 11-224)
(on page 11-233)
dmm.rtdbeta
This attribute contains the beta value of a user-defined RTD.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Reset
DMM reset
Recall setup
Create configuration script
Save setup
1.086300E-01
Usage
value
= dmm.rtdbeta
dmm.rtdbeta =
value
value
The RTD beta value: 0 to 1
Details
This attribute is only valid when
dmm.func
is set to
"temperature"
. All other functions generate an
error and return nil when queried.
This setting only applies when the transducer type is set to 3 or 4-wire RTD. For other transducer
types, the setting is set but not used until the transducer type is set to an RTD type.
The RTD beta setting is saved with the
dmm.func
function setting, so if you use another function,
then return to
"temperature"
, the RTD beta setting you set previously is retained.
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 you need unique
settings, the settings must be changed, or use two different DMM configurations.
