HP 83487A, User Manual, Page: 39 / 98

3-3
Calibration Overview
Calibration Overview
C A U T I O N The input circuits can be damaged by electrostatic discharge (ESD). Avoid
applying static discharges to the front-panel input connectors. Before
connecting a coaxial cable to the connectors, momentarily short the center and
outer connectors of the cable together. Avoid touching the front panel input
connectors without first touching the frame of the instrument. Be sure that the
instrument is properly earth-grounded to prevent buildup of static charge. It is
strongly recommended that an antistatic mat and wristband be used when
connecting to electrical channel inputs.
Calibration interval
HP recommends that the factory calibration be performed on a periodic basis.
HP designs instruments to meet specifications over the recommended calibra-
tion interval provided that the instrument is operated within the specified
operating environment. To maintain specifications, periodic recalibrations are
necessary. We recommend that the plug-in module be calibrated at an HP ser-
vice facility every 12 months. Users are encouraged to adjust the calibration
cycle based on their particular operating environment or measurement accu-
racy needs.
Required warm-up time
The instrument requires a 1 hour warm-up period before any of the calibra-
tions mentioned in this chapter are performed. It is not enough for the instru-
ment to be in the standby setting. It must be turned on and running for the
entire hour.
Remote operation
Remote programming commands for calibrations are included in the
HP 83480A/HP 54750A Programming’s Guide . Performing calibrations
remotely is slightly different than the operation of front-panel calibrations.