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Keithley 3721-ST User Manual

Keithley 3721-ST
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Series 3700A System Switch/Multimeter Reference Manual Section 12: Troubleshooting guide
3700AS-901-01 Rev. D/June 2018 12-9
Update drivers
For the latest drivers and additional support information, see the Keithley Instruments support website
(https://www.tek.com/support).
To see what drivers are available for your instrument:
1. Go to the Product Support web page (https://www.tek.com/product-support).
2. Enter the model number of your instrument.
3. Select Software from the list.
4. Select and download the file.
For LabVIEW
TM
, you can also go to the National Instruments website and search their instrument
driver database.
Error and status messages
This section includes information on error levels, how to read errors, and a complete listing of error
messages.
Error summary list
Error and status messages are assigned a level of severity, as listed in the table below.
Severity level descriptions
Number
Level
Description
0
Informational
Indicates that there are no entries in the queue
10
Informational
Indicates a status message or minor error
20
Recoverable
Indicates possible invalid user input; operation continues but action
should be taken to correct the error
30
Serious
Indicates a serious error that may require technical assistance, such as
corrupted data
40
Fatal
Instrument is not operational
Effects of errors on scripts
Most errors will not abort a running script. The only time a script is aborted is when a Lua runtime
error (error number 286) is detected.
Runtime errors are caused by actions such as trying to index into a variable that is not a table.
Syntax errors (error number -285) in a script or command will not abort the script, but will prevent the
script or command from being executed.

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Keithley 3721-ST Specifications

General IconGeneral
TypeMultimeter
Model3721-ST
ManufacturerKeithley
Measurement FunctionsDC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
Relay TypeElectromechanical
Temperature Range-200°C to 1820°C
AccuracyVaries by function and range
ResolutionVaries by function and range
DisplayLCD
InterfaceGPIB, RS-232
TopologyMultiplexer
Maximum Switching Voltage300 V
Maximum Switching Current1 A
Input Impedance>10 GΩ (DC Voltage ranges)

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