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May 2017 - 10 - © Gigahertz Solutions GmbH
E3D
(NFA1000)
/ Ey
(NFA400)
= Potential-free E-field
measurement
The field sensor pairs for the X-, Y- and Z-axis (directions
correspond to the imprint) are situated within the meter
close to the housing. For a proper measurement the meter
has to be set up more than 12 inches away from any metal
objects on an insulated “holder” (accessory PM1) or held
with an insulated rod (mounting aid PM5s). Also cables or
probes must not be connected during this measurement
setting. In the case of an erroneous configuration, the dis-
play will indicate “Err.” until the configuration is corrected or
the setting is changed to magnetic field measurement. The
measuring person should avoid hectic movements and keep
a distance of at least 1.5 m to the object of measurement.
For E-field measurements against earth potential, please
plug in the grounding cable and
- switch to “M3D” (automatic adjustment) on the NFA
1000
- switch to “Ey” on the NFA 400.
4.3 Sockets for Inputs and
Grounding
AC/DC = Combined AC/DC-Input
The moment you connect an external sensor, its signal
will automatically be displayed in mV and logged if
required. When Recording, make sure the “Mode”
switch is set to “Auto”. This input is protected from
overvoltage conditions for both AC and DC sources
.
AC: A displayed value of 2000 corresponds
to an AC signal of “1V
peak to peak
”. The AC portion is still un-
der development
4
.
DC: It can linearly display and log signals from +/- 0.1 to
+/- 1500mV, i.e. with an HF59B connected and set to
coarse (adjust to 1V), the values recorded will be between
1µW/m² and approx. 30,000 W/m². The value will be dis-
played in mV
5
.
4
Note: The AC-functionality is not yet been fully qualified and is presented as is.
The information produced by the frequency decomposition of a demodulated
pulsed HF signal will, of course, not provide any useful data.
5
For all measurement ranges, even when using an attenuator or amplifier, NFA-
soft offers a comfortable conversion tool. The random noise will make it impos-
sible to properly display or record measurement values below 0.1µW/m², though.
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