Keithley 2002 Calibration Manual

1
Performance Verification
1-1
1.1 Introduction
The procedures in this section are intended to verify that
Model 2002 accuracy is within the limits stated in the instru-
ment one-year accuracy specifications. These procedures can
be performed when the instrument is first received to ensure
that no damage or misadjustment has occurred during ship-
ment. Verification may also be performed whenever there is
a question of instrument accuracy, or following calibration,
if desired.
NOTE
If the instrument is still under warranty,
and its performance is outside specified
limits, contact your Keithley representa-
tive or the factory to determine the correct
course of action.
This section includes the following:
1.2 Environmental conditions: Covers the temperature
and humidity limits for verification.
1.3 Warm-up period: Describes the length of time the
Model 2002 should be allowed to warm up before
testing.
1.4 Line power: Covers power line voltage ranges during
testing.
1.5 Recommended equipment: Summarizes recom-
mended equipment and pertinent specifications.
1.6 Verification limits: Explains how reading limits were
calculated.
1.7 Restoring factory default conditions: Gives step-by-
step procedures for restoring default conditions before
each test procedure.
1.8 Verification procedures: Details procedures to verify
measurement accuracy of all Model 2002 measure-
ment functions.
1.2 Environmental conditions
Verification measurements should be made at an ambient
temperature of 18–28°C (65–82°F), and at a relative humid-
ity of less than 80% unless otherwise noted.
1.3 Warm-up period
The Model 2002 must be allowed to warm up for the
following time period before performing the verification
procedures:
• DC volts and ohms: four hours
• AC volts, AC current, DC current: one hour
If the instrument has been subjected to temperature extremes
(outside the range stated in paragraph 1.2), allow additional
time for internal temperatures to stabilize. Typically, it takes
one additional hour to stabilize a unit that is 10°C (18°F) out-
side the specified temperature range.
The test equipment should also be allowed to warm up for
the minimum period specified by the manufacturer.

Keithley 2002 Specifications

General

Resolution	8.5 digits
DC Voltage Accuracy	±0.0006%
Maximum DC Voltage	1000 V
Maximum AC Voltage	750 V
Maximum DC Current	3 A
Maximum AC Current	3 A
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	10 Ω to 1 GΩ
Model	2002
Category	Multimeter
Interface	GPIB, RS-232
AC Current Accuracy	±0.1%
Frequency Range	0.1Hz to 300kHz
Display	VFD
Type	Digital
Power Supply	100-240V AC, 50/60Hz
Current Range (DC)	100 μA to 3 A
Current Accuracy (DC)	±0.01%
Current Range (AC)	100 μA to 3 A
Current Accuracy (AC)	±0.1%
DC Current Range	100 μA to 3 A
AC Current Range	100 μA to 3 A