Range Considerations - Keithley 2606B System SourceMeter Reference Manual

2606B System SourceMeter® Instrument Reference Manual
To individually set low range limits for Source V, Source I, Measure V, and Measure I from the virtual
front panel:
1. Press the CONFIG key, then press either the SRC key (for source) or the MEAS key (for
measure).
2. Select voltage or current source, or measure, as appropriate, and then press the ENTER key or
the navigation wheel .
3. Select LOWRANGE, and then press the ENTER key or the navigation wheel .
4. Set the low range to the appropriate setting, and then press the ENTER key or the navigation
wheel .
5. Press the EXIT (LOCAL) key twice to return to the main display.

Range considerations

The source range and measure range settings can interact depending on the source function.
Additionally, the output state (on/off) can affect how the range is set. The following table describes
these interactions:
If...
The source function is
the same as the
measurement function
(for example, sourcing
voltage and
measuring voltage)
A source or
measurement range
for a function is
explicitly set
Source autoranging is
enabled
You send a source
level that is out of
range while autorange
is off
Measure autoranging
is enabled
2606B-901-01 Rev. B / May 2018
Then... Notes
The measurement The setting for the voltage measure range is retained and used when the
range is locked to be source function is changed to current.
the same as the
2606B example:
source range.
smua.source.func = smua.OUTPUT_DCVOLTS
smua.source.rangev = 1
smua.measure.rangev = 10
-- will print 1, the source range
print(smua.measure.rangev)
smua.source.func = smua.OUTPUT_DCAMPS
-- will print 10, the measure range
print(smua.measure.rangev)
Autoranging for that Autoranging is controlled separately for each source and measurement
function is disabled. function: source voltage, source current, measure voltage, and measure
current. Autoranging is enabled for all four by default.
The output level Querying the range after the level is set returns the range the instrument
controls the range. chose as appropriate.
The instrument will When the output is turned on, the display will show a series of question
not return an error
marks: ???.???
until the output is
turned on.
The measure range is Querying the range after the measurement is taken will return the range
changed only when a that the instrument chose.
measurement is
taken.
Section 2: General operation
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