Programming instructions

Chapter 1 3458A Calibration Introduction 7
Chapter 1 3458A Calibration Introduction
Introduction
This manual provides operation verification procedures, adjustment
procedures, and performance verification procedures for the 3458A
Multimeter.
WARNING The information contained in this manual is intended for the
use of service-trained personnel who understand electronic
circuitry and are aware of the hazards involved. Do not attempt
to perform any of the procedures outlined in this section unless
you are qualified to do so.
The manual contains five chapters and two appendixes.
Chapter 1: Introduction describes the manual contents and calibration
security features of the 3458A.
Chapter 2: Operational Verification provides a short test procedure to
verify that the multimeter is functioning properly.
Chapter 3: Adjustment Procedure gives the procedures for adjusting the
multimeter to obtain best accuracy.
Chapter 4: Performance Verification is comprised of test procedures used
to verify that all parts of the instrument are functioning properly and within
specification. This chapter contains Test Cards for recording the results of
each test.
Chapter 5: Command Summary provides an alphabetical summary of
commands that are used in adjusting and performance testing the 3458A.
Appendix A: 3458A Technical Specifications.
Appendix B: Electronic Calibration of the 3458A, Product Note
3458A-3.
Calibration Security
The calibration security feature of the 3458A allows the person responsible
for calibration to enter a security code to prevent accidental or unauthorized
calibration (CAL) or autocalibration (ACAL). The SECURE command is
used to change the security code of the 3458A.
Security Code The security code is an integer from -2.1E-9 to 2.1E9. If the number specified
is not an integer, the multimeter rounds it to an integer value. The multimeter