Section 9: Frequently asked questions (FAQs)
Series 2600B System SourceMeter® Instrument Reference Manual
9-8
2600BS-901-01 Rev. B / May 2013
Low-current measurement programming example
Example code for a typical low-current measurement is shown below. This code assumes that a
100
GΩ resistor is being tested.
-- Restore defaults.
smua.reset()
-- Set source to DC V.
smua.source.func = smua.OUTPUT_DCVOLTS
-- Select 200 V source range.
smua.source.rangev = 200
-- Output 100 V DC.
smua.source.levelv = 100
-- Select 1 nA range.
smua.measure.rangei = 1e-9
-- Set current limit to 2 nA.
smua.source.limiti = 2e-9
-- Turn on output.
smua.source.output = smua.OUTPUT_ON
-- Delay 1 second to allow for source and measure settling.
smua.source.delay = 1
-- Returns current reading.
print(smua.measure.i())
-- Returns resistance reading.
print(smua.measure.r())
-- Turn off output.
smua.source.output = smua.OUTPUT_OFF
How can I change the line frequency?
The Series 2600B requires a line voltage of 100 V AC to 240 V AC (±10%), and a line frequency of
50 Hz or 60 Hz. The factory configures the Series 2600B to automatically detect and operate at the
appropriate power line frequency each time the instrument power is turned on.
You can manually configure the instrument to a different line frequency. For more information, see
Line frequency configuration
(on page 2-15).
Where can I get the LabVIEW driver?
The latest NI
TM
LabVIEW
TM
driver is available from the
Keithley Instruments support website
(
http://www.keithley.com/support
).
What should I do if I get an 802 interlock error?
You will receive error code 802, "OUTPUT blocked by interlock," if you:
•
Disengage the interlock when the Series 2600B output is already on
•
Attempt to turn on the Series 2600B output when the interlock is disengaged
To recover from this error, properly engage the interlock using a safe test fixture, and then turn on the
Series 2600B output.
Summary of Contents for System SourceMeter 2601B
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