The constants include:
• PI: is the ratio of the circumference to the diameter of a circle
• K: Boltzmann’s constant
• Q: The charge of an electron
• M0: Electron mass
• EV: Electron volt
• U0: Permeability
• E0: Permittivity of a vacuum
• H: Planck’s constant
• C: Speed of light
• KTQ: The thermal voltage
For additional information, see “The Formulator” in the Model 4200A-SCS Clarius User's Manual.
To modify the constants:
1. Select Tools.
2. Next to Formulator Constants, select Open.
3. To add a constant, select Add and complete the fields.
4. To remove a constant, select the constant and select Delete.
5. To change a constant, select the constant and select Edit.
Generate Technical Support Files
The Technical Support Files option analyzes your 4200A-SCS. KCon stores the analysis results to a
USB flash drive. You can then send the results to Keithley Instruments for review.
To generate a technical support file:
1. Insert a USB flash drive into one of the front-panel USB ports.
2. Select Tools.
3. Next to Technical Support Files, select Generate.
4. Select Yes.
5. After the System Audit window appears and indicates a successful analysis, select OK. The
System Audit window closes.
6. Contact your local Keithley Instruments office, sales partner, or distributor for details on how to
send the files.
Technical support personnel at Keithley Instruments will review the analysis information and assess
the state of your 4200A-SCS.
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