1
Performance Verification
1-1
1.1 Introduction
The procedures in this section are intended to verify that
Model 2001 accuracy is within the limits stated in the instru-
ment one-year specifications. These procedures can be per-
formed when the instrument is first received to ensure that no
damage or misadjustment has occurred during shipment.
Verification may also be performed whenever there is a ques-
tion of instrument accuracy, or following calibration, if de-
sired.
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 2001 should be allowed to warm up before test-
ing.
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 2001 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 humidity
of less than 80% unless otherwise noted.
1.3 Warm-up period
The Model 2001 must be allowed to warm up for at least one
hour before performing the verification procedures. If the in-
strument has been subjected to temperature extremes (out-
side 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) outside
the specified temperature range.
The calibration equipment should also be allowed to warm
up for the minimum period specified by the manufacturer.