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Electromagnetic
Compatibility
Radio-Frequency
Electromagnetic
Field Immunity
1. Radiated Immunity Testing. When tested at 3 V/m, according to IEC 801-3/1984, the displayed
average noise level will be within specifications over the full immunity test frequency range of
27 MHz to 500 MHz except at the immunity test frequencies of 223.5714 MHz ± selected
resolution bandwidth, and 437.1429 MHz ± selected resolution bandwidth, where the displayed
average noise level can be up to -45 dBm. When the Noise Figure Analyzer tuned frequency is
identical to these immunity test frequencies, the measurements could be corrupted and there
may be signals of up to -70 dBm displayed on the screen.
Technical Specifications
General Specifications
This product conforms with the protection requirements of European Council
Directive 89/336/EEC for Electromagnetic Compatibility (EMC).
The conformity assessment requirements have been met using the technical
Construction file route to compliance, using EMC test specifications EN
55011:1991 (Group 1, Class A) and EN 50082-1:1992.
In order to preserve the EMC performance of the product, any cable which becomes
worn or damaged must be replaced with the same type and specification.
When a 3 Vm-1 radio-frequency electromagnetic field is applied to the Noise Figure
Analyzer according to IEC 61000-4-3:1995, degradation of performance may be
observed. When the frequency of the incident field matches the frequency of a
measured noise figure or gain, the values displayed will deviate from those
expected. This phenomenon will only affect that specific frequency, and the
Analyzer will continue to perform to specification at all other frequency sample
points.
The Noise Figure Analyzer may be unable to calibrate a chosen frequency sample
point, if the frequency matches that of an incident electromagnetic field.
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1
Chapter 3
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