Warm-Up Period; Line Power - Keithley 2701 Service Manual

Section 2: Calibration

Warm-up period

Allow the 2701 Ethernet-Based DMM / Data Acquisition System to warm up for at least two hours
before performing calibration.
If the instrument has been subjected to temperature extremes (those outside the ranges stated
above), allow extra 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

The 2701 requires a line voltage of 100V/120V/220V/240V ±10% and a line frequency of 45 Hz to
66 Hz or 360 Hz to 440 Hz. Note that the line frequency is automatically sensed at power-up, but the
line voltage must be manually set to either 100 V/120 V or 220 V/240 V as described in
line voltage and replacing the line fuse
2-2
Model 2701 Ethernet-Based DMM / Data Acquisition System Service Manual
(on page 3-1).
Setting the
2701-902-01 Rev. B / December 2018