19-2 Calibration
Introduction
Use the procedures in this section to calibrate Model 6514. These procedures require accurate
test equipment to source precise DC voltages, currents, resistances and charge values.
WARNING The information in this section is intended only for qualified service person-
nel. Do not attempt these procedures unless you are qualified to do so.
These procedures may expose you to hazardous voltages which could cause
severe injury or death.
Environmental conditions
Temperature and relative humidity
Conduct the calibration procedures at an ambient temperature of 18-28˚C (65-82˚F) with rel-
ative humidity of less than 70% unless otherwise noted.
Warm-up period
Allow Model 6514 to warm up for at least one hour before performing calibration.
If the instrument has been subjected to temperature extremes (those outside the ranges stated
above), allow additional time for the instrument's internal temperature to stabilize. Typically,
allow one extra hour to stabilize a unit that is 10˚C (18˚F) outside the specified temperature
range.
Also, allow the test equipment to warm up for the minimum time specified by the
manufacturer.
Line power
Model 6514 requires a line voltage of 100/120 VAC or 220/240 VAC at a line frequency of
50 or 60Hz. The instrument must be calibrated while operating from a line voltage within this
range.
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