4200A-SCS Parameter Analyzer User's Manual Section 2: Getting started
4200A-900-01 Rev. D/April 2020 2-17
The 4200A-SCS operates from a line voltage in the range of 100 VAC to 240 VAC at a frequency of
50 Hz or 60 Hz. Line voltage is automatically sensed, but line frequency is not.
The 4200A-SCS power switch allows you to either shut down the instrument without shutting down
the software, or shut down the instrument and the software. To shut down only the instruments, press
the power button briefly. To shut down the instrument and the software, hold the power button down
for a few seconds.
To connect and power the unit:
1. Check to be sure that the operating voltage in your area is compatible.
2. Connect the female end of the supplied power cord to the AC receptacle on the rear panel. See
the Rear panel overview (on page 2-4) for details.
Figure 12: Line power receptacle
3. Connect the other end of the supplied line cord to a grounded AC line power receptacle.
4. Turn the power ON using the front-panel power switch.
Although the instrument does not sense power line frequency at power-up, Keithley ships your
4200A-SCS with line frequency settings that match the line frequency that was specified on the
order — either 50 Hz or 60 Hz. However, if necessary, you can change the line frequency setting
using the KCon utility. Refer to the Keithley Configuration Utility (KCon) section in the Model
4200A-SCS Reference Manual.
Operating the 4200A-SCS with the wrong line frequency setting may result in noisy readings
because the line frequency setting affects SMU line frequency noise rejection.
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