2470 High Voltage SourceMeter Instrument Reference Manual
Section 4: Sourcing and measuring
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
(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
buffer to remove the mixed units.
