IEEE 1140 : 1994

Table of Contents

1 Scope
2 Definitions
3 General conditions
3.1 General
3.2 Background electric field levels
3.3 Background magnetic field (magnetic flux density)
4 Electric field test equipment
4.1 Electric field measuring probe
4.2 Probe filters and signal processing
4.3 Calibration
5 Electric field strength measurement procedure
5.1 VDT test setup
5.2 Measurement procedure
5.3 Measurement uncertainty
6 Magnetic field test equipment
6.1 Magnetic field measuring probe
6.2 Probe filters and signal processing
6.3 Calibration
7 Magnetic flux density measurement procedure
7.1 VDT test setup
7.2 Measurement procedure
7.3 Measurement uncertainty
8 Bibliography
Annexes
A (normative) Electric field measuring probe -
     principle of operation
B (normative) VDT characterization - typical data
     recording format
C (normative) Measurement uncertainty - typical data
     recording format
D (normative) Measurement instrumentation used

Abstract

Lays down methods for measuring the electric and magnetic fields in close proximity to video display terminal (VDTs) that are in the frequency range of 5 Hz to 400 kHz. This publication adapts existing international measurement technologies and practices to achieve a consistent and harmonious VDT measurement standard for testing in a laboratory controlled environment. These measurements are needed for investigative studies that rely on the knowledge of electric and magnetic field levels near electronic equipment.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN