Keithley 2010 Service Manual

Introduction
Use the procedures in this section to verify that the Model 2010 Multimeter accuracy is within
the limits stated in the instrument’s one-year accuracy specifications. You can perform
verification procedures:
• When you first receive the instrument to make sure that it was not damaged during
shipment, and that the unit meets factory specifications.
• If the instrument’s accuracy is questionable.
• Following calibration.
WARNING The information in this section is intended only for qualified service
personnel. Do not attempt these procedures unless you are qualified to do so.
NOTE
If the instrument is still under warranty and its performance is outside specified
limits, contact your Keithley representative or the factory to determine the correct
course of action.
Verification test requirements
Be sure that you perform the verification tests:
• Under the proper environmental conditions.
• After the specified warm-up period.
• Using the correct line voltage.
• Using the proper calibration equipment.
• Using the specified reading limits.
Environmental conditions
Conduct your performance verification procedures in a test environment that has:
• An ambient temperature of 18-28°C (65-82°F).
• A relative humidity of less than 80% unless otherwise noted.
Warm-up period
Allow the Model 2010 Multimeter to warm up for at least two hours before conducting the
verification procedures.
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.
1-2 Performance Verification

Keithley 2010 Specifications

General

Frequency Range	3 Hz to 300 kHz
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	3 A
DC Current Accuracy	0.05%
AC Current Range	3 A
Resistance Accuracy	0.01%
Interface	GPIB, RS-232
Power Supply	50 Hz or 60 Hz