Gigahertz Solutions HFW35C Bedienungsanleitung Seite 11

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The frequency range of the HFW35C comprises the frequencies of
lower and upper WLAN-bands, Bluetooth, some Radar- and beam-
radio-frequencies as well as both of the WiMAX-bands.
Control elements and Quick Start Guide
Connecting socket for antenna cable. The anten-
na is inserted into the "cross like" opening at the
front tip of the instrument. Important: Do not bend
the cable too sharply or overtighten the connector
screw!
switch
„Power" On/Off
„Signal" For building biological assessment use „peak".
„Range" Set the sensitivity according to the level of radiation .
"Full" / "Pulse" for choosing the whole signal to be displayed or
only the pulsed fraction
Attenuator knob for audio analysis of digital HF
services
counter" effect proportional to the signal)
The meter includes an Auto-Power-Off-feature.
When the "Low Batt" indicator appears in the centre of the display, measurement values are
not reliable anymore. In this case the battery needs to be changed. If there is nothing dis-
played at all upon switching the analyzer on, check the connections of the battery or change
battery. (See „Changing the Battery")
Introduction to Properties of HF Radiation and
Consequences for their Measurement
Permeation of many materials
In particular for measurements inside of buildings it is important to
know that construction materials are permeable for HF radiation to a
varying degree. Some part of the radiation will also be reflected or
absorbed. Wood, drywall, and wooden window frames, for example,
are usually rather transparent spots in a house. More information
can be found on our website.
Polarisation
Most High Frequency radiation ("waves") is vertically or horizontally
polarised. With the antenna attached the meter measures the verti-
cally polarised component, if the display is positioned horizontally.
By rotating the meter around its longitudinal axis you will be able to
pick up any polarisation plane.
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More specific: the amplidude-modulated fraction
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(HF35C and HF38B only; the HF32D has a "Geiger
Made in Germany
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