Model 2750 Multimeter/Switch System Service Manual Calibration 2-3
Model 2750 Calibration
Calibration considerations
When performing the calibration procedures:
• Make sure that the equipment is properly warmed up and connected to the appro-
priate input jacks. Make sure that the correct front or rear terminals are selected
with the INPUTS switch.
• Make sure the calibrator is in OPERATE before you complete each calibration
step.
• Always let the source signal settle before calibrating each point.
• If an error occurs during calibration, the Model 2750 will generate an appropriate
error message. See Appendix B for more information.
WARNING Observe the following safety precautions when performing these tests:
• Some of the procedures in this section may expose you to dangerous
voltages. Use standard safety precautions when such dangerous volt-
ages are encountered to avoid personal injury or death caused by elec-
tric shock.
• For the front panel terminals only, the maximum common-mode volt-
age (voltage between INPUT LO and chassis ground) is 500V peak.
Exceeding this value may cause a breakdown in insulation, creating a
shock hazard.
• For the plug-in modules, the maximum common-mode voltage (volt-
age between any plug-in module terminal and chassis ground) is listed
in the module’s specifications. Exceeding this value may cause a
breakdown in insulation, creating a shock hazard.
• When using the front panel terminals simultaneously with plug-in
modules, all cable insulation voltage ratings must equal or exceed the
maximum voltage applied to either the front panel terminals or the
plug-in module terminals.
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