0 High Voltage SourceMeter Instrument Reference Manual Section 4:
2470-901-01 Rev. A / May 2019 4-49
Disabling the relative offset
Using the front panel:
1. Select the measure function to which the relative offset is applied.
2. On the SETTINGS swipe screen, select Rel. An X should be displayed and the REL annunciator
to the right of the measurement is no longer displayed.
You can also disable the relative offset feature by selecting MENU > Measure > Calculations > Rel
and selecting Off.
Using SCPI commands:
Send the command:
:SENSe:VOLTage:RELative OFF
To set the relative offset for another function, replace VOLTage with CURRent or RESistance.
Using TSP commands:
Send the commands:
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.rel.enable = smu.OFF
To set the relative offset for another function, replace smu.FUNC_DC_VOLTAGE with
smu.FUNC_DC_CURRENT or smu.FUNC_RESISTANCE.
Calculations that you can apply to measurements
The 2470 allows you to apply the following math operations to the measurement:
• mx+b
• percent
• reciprocal (1/X)
Math calculations are applied to the input signal after relative offset and before limit tests. For more
detail on the order of operations, see Order of operations (on page 5-27
).
Math operations apply to the selected measure function. If you change the measure function, the
math operation for that function becomes active.
Changing math functions does not clear the reading buffer, which can result in mixed units in the
reading buffer. If you are graphing, this can cause ? to be displayed in the Y-axis. Clear the reading
buf
fer to remove the mixed units.
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