Model 2657A High Power System SourceMeter® Instrument Reference Manual
Appendix B: Calibration
2657A-901-01 Rev. B/December 2012
B-15
Adjustment considerations
When performing the adjustment procedures:
•
Make sure that the test equipment is properly warmed up and connected to the correct Model
2657A terminals.
•
Always allow the source signal to settle before calibrating each point.
•
Do not connect test equipment to the Model 2657A SMU through a scanner or other switching
equipment.
•
If an error occurs during calibration, the Model 2657A will generate an appropriate error message.
See
(on page 8-3) for more information.
The maximum common-mode voltage (voltage between LO and chassis ground) is 250 V DC.
Exceeding this value may cause a breakdown in insulation, creating a shock hazard that could result
in personal injury or death.
The input/output terminals of the Model 2657A High Power System SourceMeter instrument SMU
are rated for connection to circuits rated Measurement Category I only, with transients rated less
than 1500 V peak above the maximum rated input. Do not connect the Model 2657A terminals to
CAT II, CAT III, or CAT IV circuits. Connection of the Model 2657A terminals to circuits higher than
CAT I can cause damage to the equipment or expose the operator to hazardous voltage.
Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock
that could cause injury or death, never make or break connections to the Model 2657A while the
instrument is powered on. Turn off the equipment from the front panel or disconnect the main
power cord from the rear of the Model 2657A before handling cables. Putting the equipment into
standby does not guarantee that the outputs are powered off if a hardware or software fault occurs.
Calibration adjustment cycle
Perform a calibration adjustment at least once a year to ensure the instrument meets or exceeds its
specifications.
WARNING
Summary of Contents for 2657A
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