BS 3G 100-4.2:1980

Foreword
Specification
1 Scope
2 References
3 Definitions
4 Measurement
5 Measuring techniques and control of interference
6 Limits
Appendices
A Aerial systems for emission and susceptibility
    testing
B Design aspects of transmission lines for
    susceptibility tests at frequencies up to 30 MHz
C Radiated susceptibility testing above 30 MHz
Table
1 Details of inductor shown in figure 2
Figures
1 Impedance/frequency characteristic of line
    impedance stabilizing network
2 Circuit diagram of line impedance stabilizing
    network
3 Typical arrangement for test for conducted
    interference measurements using line stabilizing
    networks in power lines
4 Broad band conducted interference limits, using
    stabilizing network
5 Narrow band conducted interference limits using a
    stabilizing network
6 Broad band conducted interference limits, using
    current probe
7 Narrow band conducted interference limits, using
    current probe
8 Typical arrangement for tests for radiated
    interference, using vertical rod aerial
9 Typical arrangement for tests for radiated
    interference and for susceptibility to radiated
    interference
10 Broad band radiated interference limits
11 Narrow band radiated interference limits
12 Typical arrangement for test for susceptibility to
    conducted interference at audio frequencies
13 Signal level for test of susceptibility to conducted
    interference at radio frequencies
14 Signal level for test of susceptibility to radiated
    interference at radio frequencies
15 Typical parallel plate for susceptibility testing
16 Screened room with long-wire antenna for radiated
    susceptibility tests
17 General assembly, elevation and plan for
    monoconical aerial for field measurement (180 MHz
    to 540 MHz)
18 Detail of cone construction of monoconical aerial
19 Detail of base of monoconical aerial
20 Typical calibration curve for monoconical aerial

Specifies limits and measurement of the electromagnetic interference which may be produced by aircraft electric, electronic and radio equipment and the susceptibility of equipment to such interference. Gives tests for assessing the compliance of equipment with the requirements. Deals with individual items of equipment, subsystems, or systems, including interconnecting wiring, as tested in a test laboratory under defined conditions. Includes aerial systems for emission and susceptibility testing, design aspects of transmission lines for susceptibility tests at frequencies up to 30 MHz and radiated susceptibility testing above 30 MHz.