Chapter 3 103
Technical Specifications
General Specifications
Electromagnetic
Compatibility
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.
Radio-Frequency
Electromagnetic
Field Immunity
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.
1
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.
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