4: Sourcing and measuring 2470 High Voltage SourceMeter Instrument
4-46 2470-901-01 Rev. A / May 2019
Setting the source delay
Using the front panel:
1. Press FUNCTION and set the source and measurement function.
2. Press the MENU key.
3. Under Source, select Settings.
4. Set Source Delay to Auto Delay or specify a delay and enter a value.
5. Click OK.
Using a remote interface:
• SCPI commands: Refer to :SOURce[1]:<function>:DELay (on page 12-73).
• TSP commands: Refer to smu.source.delay (on page 14-159).
Relative offset
When making measurements, you may want to subtract an offset value from a measurement.
The relative offset feature subtracts a set value or a baseline reading from measurement readings.
When you enable relative offset, all measurements are recorded as the difference between the actual
measured value and the relative offset value. The formula to calculate the offset value is:
Displayed value = Actual measured value − Relative offset value
When a relative offset value is established for a measure function, the value is the same for all ranges
for that measure function. For example, if 5 V is set as the relative offset value on the 20 V range, the
relative offset value is also 5 V on the 2 V and 200 mV ranges.
On the front panel, when relative offset is enabled, the REL indicator to the right of the measured
value is displayed.
A relative offset value is saved for each function. If you change the measure function, the relative
offset value is changed to the setting for that measure function.
The relative offset is applied to the measurement before any math and limit test functions. For more
information on the order in which operations are performed, see Order of operations (on page 5-27
).
You can perform the equivalent of relative offset manually by using the mx+b (on page 4-50) math
function. Set m to 1 and b to the value of the offset.
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