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May 2017 - 12 - © Gigahertz Solutions GmbH
and secondary display measurements. The secondary
measurement field is indicated by a short flashing of the cor-
responding unit-LED.
and = Display of the indi-
vidual frequency bands resp. the exact
frequency of the frequency bands
6
Selection of the individual frequency bands is possible by
clicking the “Mode” button
7
. Please see chapter 4.9 for more
details on this feature or on automated scrolling.
/
= Capacitive body coupling / volume
In this setting, the display will show the signal generated by
connecting a hand probe. The grounding cable needs to be
connected in order to assure proper measurements. For vol-
ume regulation please see chapter 3.2.
4.5 Evaluation of Signal
tRMS
= true RMS value
tRMS = “true Root Mean Square”. The
values displayed and recorded can be
compared directly to classifications rec-
ommended by building biologists.
This is the correct standard setting of the
NFA, even for logging the peak values of a
connected HF-Analyser.
peak
= Peak value
Real peak value measurement: With this setting the meter
measures the highest culminating point of the wave
8
. A new,
still experimental measurement feature for building biologists
6
An exact frequency indication is only possible up to 30 kHz.
7
If the 50 Hz high pass filter has been set with the help of the configuration part of the
NFAsoft (maybe even as pre-setting), the 16.7 Hz LED will remain unlit. However, the filter
only applies to the display in the “Auto”-mode and to loggings in the “All3D”-channel. The
aim is to tranquilize the display. Nevertheless, possible frequency components up to 16.7
Hz can be displayed by using “Band” and “Freq.”.
8
The resolution of the frequencies during the analysis of the (actually by their
nature broadbanded) peak values does not consider phase information that is
being a worst-case consideration. Tolerances are much higher than using the
tRMS analysis. It cannot be used with the floating potential E-field measurement
for the time being.
Signal
Peak
tRMS
Hold
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