Tests & Standards

Type of test

Specification/Documents
Normalized Site Attenuation (NSA)
Range – 3 Meter, 5 Meter, 10 Meter
Frequency Range: 30 MHz – 1 GHz

ANSI C63.4a (2017)
EN 50147-2 (1997)
CISPR 16-1-4, Ed. 4.1 (2020-06)


Fully Anechoic Room Reference Site Method
(FAR RSM)

Range – 3 Meter
Frequency Range: 30 MHz – 1 GHz

CISPR 16-1-4, Ed. 4.1 (2020-06)


Normalized Site Insertion Loss (NISL)
Frequency Range: 9 kHz – 30 MHz
CISPR/A/1323/CDV
Draft of CISPR 16-1-4 Ed. 4
(not accredited)

Field of Uniformity (FU)
Frequency Range: 80 MHz – 18 GHz

IEC 6100-4-3, ED 4.0 (2020-09)
IEC 61000-4-21 (2011)

Voltage Standing Wave Ratio
(VSWR/Free Space)

Frequency Range:  30 MHz – 100 GHz

IEEE Standard 149 (2021)


Site VSWR (sVSWR)
Frequency Range: 1 GHz – 18 GHz
CISPR 16-1-4, ED. 4.1 (2020-06)

Radio Frequency Shielding Effectiveness
(RF, SE)

Frequency Range: 1 kHz – 100 GHz

IEEE Standard 299 (2006)
EN-50147-1 (1997)
NSA 94-106 (1994-10)
MIL-STD-188-125-1 Appendix A
MIL-STD-188-125-2 Appendix A

Set-up Table Influences (TI)
Frequency Range:  200 MHz – 18 GHz

CISPR 16-1-4 (2020-06)

CISPR 25 ALSE Longwire (LW)
Frequency Range:  150 kHz – 1 GH

CISPR 25, Ed. 5.0 (2021-12), Anex I

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