Section 2: General operation
Series 2600B System SourceMeter® Instrument Reference Manual
2-84
2600BS-901-01 Rev. C / August 2016
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...
Then...
Notes
The source function is
the same as the
measurement function
(for example, sourcing
voltage and
measuring voltage)
The measurement
range is locked to be
the same as the
source range.
The setting for the voltage measure range is retained and used when the
source function is changed to current.
Series 2600B example:
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)
A source or
measurement range
for a function is
explicitly set
Autoranging for that
function is disabled.
Autoranging is controlled separately for each source and measurement
function: source voltage, source current, measure voltage, and measure
current. Autoranging is enabled for all four by default.
Source autoranging is
enabled
The output level
controls the range.
Querying the range after the level is set returns the range the instrument
chose as appropriate.
You send a source
level that is out of
range while autorange
is off
The instrument will
not return an error
until the output is
turned on.
When the output is turned on, the display will show a series of question
marks:
???.???
Measure autoranging
is enabled
The measure range is
changed only when a
measurement is
taken.
Querying the range after the measurement is taken will return the range
that the instrument chose.
