HP 83481A, User Manual, Page: 59 / 98

User Calibrations|Optical and Electrical
The following calibrations can be performed by the user:
O/E User W avelength Calibration
Plug-in Module V ertical Calibration
Oset Zero Calibration
Dark Calibration
Probe Calibration
Channel Skew
External Scale
Electrical channels have calibration procedures for:
adjusting timebase skew , for matching propagation delay between channels ,
probes , cables , and so forth
using external probes
Optical channels have calibration procedures for:
adjusting timebase skew
monitoring and adjusting internal osets
performing a user-dened O/E responsivity adjustment
C A U T I O N
The input circuits can be damaged by electrostatic discharge (ESD). A void
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 . A void touching the front panel
input connectors without rst touching the frame of the instrument. Be sure
the instrument is properly earth-grounded to prevent buildup of static charge .
An antistatic mat and wristband are strongly recommended, particularly
when working with TDR modules .
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