In this section:
Calibration verification and adjustment test requirements ........ 2-1
Calibration and adjustment connections .................................. 2-3
Calibration verification and adjustment considerations ............ 2-7
Calibration verification and adjustment test requirements
The following topics describe what you must do to prepare the Model 2461 for calibration verification
and adjustment.
Environmental conditions
To ensure accurate results, the calibration verification and adjustment environment must meet the
following conditions.
Temperature and relative humidity
Conduct the calibration verification and adjustment procedures in a test environment with:
•
A stable ambient temperature of 18 °C to 28 °C (65 °F to 82 °F).
•
A relative humidity of less than 70 percent, unless otherwise noted.
Warm up period
Allow the Model 2461 to warm up for at least one hour before conducting the calibration verification or
adjustment procedures.
If the instrument has been subjected to temperature extremes (more than 5 °C (41 °F) above T
cal
),
allow additional time for the internal temperature of the instrument to stabilize. Typically, allow an
additional hour to stabilize an instrument that is 10 °C (50 °F) outside the specified temperature
range.
Also, allow the test equipment to warm up for the amount of time recommended by the manufacturer.
Line power
The Model 2461 requires a line voltage of 100 V to 240 V and a line frequency of 50 Hz or 60 Hz.
Calibration verification and adjustment should be done within this range.
The instrument automatically senses the line frequency at power up.
Section 2
Preparing for calibration verification and adjustment
