Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 2:
General operation
2461-901-01 A/November 2015 2-45
System Calibration menu
The Calibration menu allows you to start or manage auto calibration. Auto calibration
removes measurement errors that are caused by the effects of temperature and time on
components. You can also review factory adjustment and verification dates.
Option Description
Last Run
Displays the date and time when auto calibration was last run.
Count
The number of times that autocalibration has been run since the
last factory calibration. The count restarts at 1 after a factory
calibration.
Warmup
Displays "Ready" if the instrument warmup period is complete. If
the warmup period is incomplete, displays "Not Ready" and the
time remaining.
Temperature
Difference
The difference between the temperature of the instrument in
Celsius (°C) compared to the temperature during the last auto
calibration. The instrument updates the temperature when autozero
references are refreshed. If autozero is set to off, the internal
temperature is not updated.
Start ACAL
Runs auto calibration.
System Info/Manage menu
The Info/Manage menu gives you access to version and serial number information
and settings for instrument firmware and reset functions.
Setting Description
Version
The version of firmware that is installed in the instrument.
Serial Number
The serial number of the instrument.
Upgrade to New
This option initiates a firmware upgrade from a file on a USB flash
drive.
Downgrade to Older
This option returns the Model 2461 to a previous version of the
firmware from a file on a USB flash drive.
System Reset
This option resets many of the instrument settings to their default
values. For more information about what settings get reset, see
Reset default values (on page 4-25).
Password Reset
Resets the access password to the default value.
Product Demo
Configures a brief demonstration of the graphing capability of the
Model 2461. To get correct results, you must have the appropriate
demonstration fixture connected to the inputs. For more
information, contact your local Keithley office, sales partner, or
distributor.
Display features
You can set the front-panel display to display the units of measure, number of digits, and customized
text messages for your applications.

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV