Verification Test Requirements; Environmental Conditions; Warm-Up Period; Line Power - Keithley 6514 Instruction Manual

Verification test requirements
Be sure that you perform the verification tests:
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Environmental conditions

Conduct your performance verification procedures in a test environment with:
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Warm-up period

Allow Model 6514 to warm up for at least one hour before conducting the verification proce-
dures. 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. Typi-
cally, allow one extra hour to stabilize a unit that is (10˚C) 18˚F outside the specified temperature
range.
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. Verification tests must be performed within this range.
Under the proper environmental conditions.
After the specified warm-up period.
Using the correct line voltage.
Using the proper test equipment.
Using the specified test signals and reading limits.
An ambient temperature of (18-28˚C) 65-82˚F.
A relative humidity of less than 70% unless otherwise noted.
Performance Verification 18-3