2
Calibration
2-1
2.1
Introduction
This section gives detailed procedures for calibrating the
Model 2002. Basically, there are three types of calibration
procedures:
• Comprehensive calibration
• AC self-calibration
• Low-level calibration
Comprehensive calibration requires accurate calibration
equipment to supply precise DC voltages, DC currents, and
resistance values. AC self-calibration requires no external
equipment and can be performed at any time by the operator.
Low-level calibration is normally performed only at the fac-
tory when the instrument is manufactured and is not usually
required in the field.
NOTE
Low-level calibration is required in the
field only if the Model 2002 has been
repaired, or if the other calibration proce-
dures cannot bring the instrument within
stated specifications.
A single-point calibration feature is also available to allow
the user to calibrate a single function or range without having
to perform the entire calibration procedure.
Section 2 includes the following information:
2.2
Environmental conditions:
States the temperature
and humidity limits for calibration.
2.3
Warm-up period:
Discusses the length of time the
Model 2002 should be allowed to warm up before
calibration.
2.4
Line power:
States the power line voltage limits when
calibrating the unit.
2.5
Calibration lock:
Explains how to unlock calibration
with the CAL switch.
2.6
IEEE-488 bus calibration commands:
Summarizes
bus commands used for calibration, lists a simple cal-
ibration program, and also discusses other important
aspects of calibrating the instrument over the bus.
2.7
Calibration errors:
Details front panel error messages
that might occur during calibration and also explains
how to check for errors over the bus.
2.8
Comprehensive calibration:
Covers comprehensive
(user) calibration from the front panel and over the
IEEE-488 bus.
2.9
AC self-calibration:
Discusses the AC user calibra-
tion process, both from the front panel and over the
IEEE-488 bus.
2.10 Low-level calibration:
Explains how to perform the
low-level calibration procedure, which is normally
required only at the factory.
2.11 Single-point calibration:
Outlines the basic methods
for calibrating only a single function or range instead
of having to go through the entire calibration
procedure.