NARDA FieldMan - SPECTRUM

8 Operating modes
78 FieldMan Narda
8.5 SPECTRUM
The SPECTRUM operating mode enables the FFT analysis of the measurement signal
in the selected frequency range with display of the frequency spectrum, evaluation via a
frequency marker and display of the broadband level. Either one of the single axes X, Y
or Z or Isotropic can be selected as the measuring axis. In addition, a selectable limit
value curve can be displayed in the spectrum. When th
e unit % is selected, the spectrum
is normalized to the field strength limits of a personal protection standard.
8.5.1 Measurement settings
The MEASUREMENT SETTINGS menu provides quick access to the most important
measurement settings for the selected operating mode.
Function
1)
Description
Reset Results Reset measurement results
Zero Offset correction (HP01 probe only)
⇒ See 10.3 Offset correction – Zero on page 102.
Result Type Result type (see Result type on page 79)
Frequency Span Frequency range
Frequency Scale Linear or logarithmic scaling
Field Electric or magnetic field
FFT Points Determines the frequency resolution of the FFT analysis
(number of frequency values = FFT points / 2)
Range Measuring range
Axis Spatial axis of the probe shown in the graph
Unit Display unit
Low Cut Filter Filter for suppression of low frequencies (low cut filter)
Detector Detector type: RMS, Peak
Standard Displays a selection list of the standards according to
whose limits normalization is performed or the limit pro-
gression is displayed in the spectrum (see
8.5 SPECTRUM on page 78).
Number of Averages Number of spectra over which averaging is performed
1) The available parameters depend on the selected operating mode and the connected probe
type.