How To Measure And Data-Log - Gigahertz Solutions NFA 1000 Operating Manual

5 How to Measure and Data-Log

5.1 "Live"-Measurement
Of course the meter can be used the "conventional" way: simply switch it on, set the
required measurement parameters, and read the values recorded. When operating
in the conventional mode, the "Status-LED" will be yellow.
In addition, the device is capable of logging all settings as well as the measurement
values of all four channels at once (i.e. the three field axis values plus one additional
channel). This data is stored onto an SD-card for future analysis. This function can
be activated by temporarily switching the "Power" switch to "Log." until the status
LED turns yellow. Then switch the "Power" switch back to "On". Please note: When
logging with the power switch set to "LOG" and changing the field of measurement
and recording (for instance from M3D to E3D), this will cause the recording session
to be closed and a new log file to be created.
These recordings can be annotated by real-time audio recordings which will be as-
signed automatically to the respective measurement for replay.
The following chapters 5.2 and 5.3 are only relevant for the NFA 1000.
5.2 Guided 9 Point Measurement
of Sleeping Areas
For alternating electric fields, the guidelines issued by the VDB
e.V., Germany, require a detailed analysis of the floating potential
electrical field in sleeping areas, specifying nine points (three
each in the head-, torso- and foot area, with the outer edge of the
instrument located 10 cm off the bed's edge). The NFA in combi-
nation with NFAsoft allows for a "guided measurement" in order
to efficiently accomplish data collection and evaluation.
Preparation and start of the measurement:
 Use the potential-free rod PM4s or the holder PM1 (stabilized by, for instance, a
stiff piece of cardboard or a plywood panel).
 Switch the "Power"-button to "On" and choose "E
(choose M for magentic fields)
3D
 Press the "Mode"-button until 9Pt is indicated on the LCD and then let go. A
beep will indicate the activation of the 9 point measurement.
© Gigahertz Solutions GmbH
3D
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350-027_NFA1000400-6-2_EN-von-susanne as of October 2011
", "Auto" and "tRMS"