System SourceMeter® Instrument Reference Manual Section 9:
Frequently asked questions (FAQs)
2600BS-901-01 Rev. B / May 2013 9-9
Why is the reading value 9.91e37?
This value indicates that there is a measurement overflow error. This error occurs when:
• A measurement performed on a fixed range has a measured value greater than the specified
range
• The measured value is larger than the maximum current or voltage range of the instrument
(exceeds the instrument rating)
If the instrument displays the overflow message on a particular range, select a higher range until an
on-range reading is displayed. To ensure the best accuracy and resolution, use the lowest range
possible that does not cause an overflow.
How do I use the included USB drive?
The USB drive included with the Series 2600B System SourceMeter
®
instrument can be used to load
test scripts onto the instrument from the front panel. The included USB drive contains a copy of the
Model 2400 personality script which allows the Series 2600B instrument to accept Model 2400 SCPI
commands. For more information about loading and running the Model 2400 personality script see
Model 2400 emulation (on page G-1
).
What do I do if I lose or format the included USB drive?
If you lose or format the USB drive or delete the Model 2400 personality script you can download the
latest version of it from the Keithley Instruments website
(http://www.keithley.com).
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