Made in Germany
© Gigahertz Solutions GmbH
9
English
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!
„Power“
On/Off
switch
(
= ”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
(HF35C and HF38B only; the HF32D has a “Geiger
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
displayed 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 reflect-
ed 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 horizon-
tally polarised. With the antenna attached the meter measures the
vertically polarised component, if the display is positioned hori-
zontally. By rotating the meter around its longitudinal axis you will
be able to pick up any polarisation plane.
3
More specific: the amplidude-modulated fraction
