4: Sourcing and measuring 2470 High Voltage SourceMeter Instrument
4-40 2470-901-01 Rev. A / May 2019
Selecting a specific measure range
You need to set the measure function before you can set the measure range.
When selecting a measure range, to ensure the best accuracy and resolution, use the lowest range
possible that does not cause an overflow event.
If you set the measure range to a specific value, the setting for automatic measure range is set to
disabled.
Selecting a specific measure range
From the front panel:
1. Press FUNCTION and select the measure function.
2. On the Home screen, select Range in the measurement view area. The Measure Range dialog
box is displayed.
3. Select the range. The selected value is displayed.
If the instrument displays an overflow message, select a higher range.
Over a remote interface:
• SCPI commands: Refer to [:SENSe[1]]:<function>:RANGe[:UPPer] (on page 12-53).
• TSP commands: Refer to smu.measure.range (on page 14-141).
Selecting the automatic measurement range
When automatic measure range is selected, the instrument automatically selects the best range to
measure the signal. If the measurement reaches 100 percent of the present range, the instrument
changes the measurement range to the next higher range.
For current and voltage measurements, the upper limit is controlled by the current or voltage limit.
For resistance measurements, you can set the upper limit to be used when automatic range
selection is enabled to put an upper bound on the range that is used for resistance measurements.
If you set the low limits for the measurement when the automatic range is disabled, the limits are not
used until the limit is changed. When changing the lower limit, if the measure range is lower than the
limit, the instrument goes up to the limit range.
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