Gigahertz Solutions NFA 1000 Operating Manual page 30

What is the purpose of the individual files and where are they
saved?
9-Point-Measurement of the electric field ("E3D")...
... in an (almost) field-free area: the indication of the dominant
frequency is unpredictable.
... in an (almost) field-free area we still have a reading
on the display
... in an (almost) field-free area and using the equipment holder
PM1 the evaluation with NFAsoft still shows high values at usually
only one point, especially in the "R<2k" channel which does not
usually show up during a "normal" measurement
350-027_NFA1000400-6-2_EN-von-susanne as of October 2011
"CONFIG.NFA" -> user configurations of the NFA-> SD-card
"NFAsoft.ini" -> Presettings for NFAsoft -> same folder as
"FIRMWARE.NFA" -> operating system of the NFA -> SD-card
In fields of minimal values the indication of the dominant fre-
The function "Peak" does not work in combination with "E3D"
and a recording (the recording process onto the SD-card
When using a telescopic rod, a reading may well be caused by
either movement-induced fields or alternating electrostatic
Solution: The configuration part of NFAsoft allows to set the
high pass filter at 16 Hz or 50 Hz. This will suppress most of
these "pseudo fields", the 50 Hz filter of course more so than
the 16 Hz filter. In areas where the 16.7 Hz frequency is not
used for traction power you should choose the 50 Hz filter.
This is nearly always a matter of "pseudo fields" caused by
movements or electrostatics in the area of the meter (for in-
stance by the person moving away from the measurement
device). Please check chapter 5.2 for more details on the con-
duction of a proper measurement avoiding this effect.
These pseudo-readings can, if need be, be deleted from the graph by opening the
9PM-file with a text editor and replacing the odd value by "0.0".
- 30 -
quency is a matter of pure stochastic
causes periodic peaks of 10-20 V/m).
fields from your contact with the rod.
NFAsoft
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