Step-By-Step-Instruction To Hf-Measurement - Gigahertz Solutions HF59B Bedienungsanleitung

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• For the determination of appropriate shielding measures, i.e. the
location and identification of the source of pollution, the LogPer
technology is definitely superior to the isotropic measurement.
When it comes to quantifying the total emission (measurement
of the total pollution) in more detail, the pros and cons of the two
approaches need to be weighed up:
• On the one hand, under typical measuring conditions, an isotropic
measurement has a broader error band by its very nature, and the
interpretation of the results is also more difficult. Yet, the measure-
ment is faster and more encompassing.
• On the other hand, the LogPer antenna offers a higher precision
and better localization for the same kind of work, and the interpre-
tation of the results is easier. Yet, a comprehensive measurement
is more time consuming and restricted to a smaller frequency band.
Step-by-Step-Instruction to
HF-Measurement
Procedure for the Quick Overview Measurement:
The HF analyser and antenna are to be checked following the instruc-
tions under "Getting Started".
Set the "Signal" switch to "Peak".
Then set the measurement range ("Range") switch to "max". Only if
the displayed measurement values are persistently very low, change
to the measurement range "med" or even to "min".
Note: When switching from "max" to "med", the volume of the audio
signals will increase considerably; between "med" and "min", there is
no difference in volume.
HF radiation exposure can differ at each point and from all directions.
Even though the HF field strength of a given space changes far more
rapidly than in the lower frequencies, it is neither feasible nor neces-
sary to measure all directions at any given point.
Since there is no need to look at the display during an overview meas-
urement, but only to listen to the audio signal, you can easily walk
around at a slow pace through the indoor or outdoor spaces in ques-
tion, constantly panning the antenna or the HF analyser with attached
antenna in all directions (forming a horizontal eight). This will provide
you with a quick overview of the situation. In indoor spaces, antenna
movements towards the ceiling or the floor will also reveal astonish-
ing results.
As already mentioned above, the aim of the quick overview
measurement is to identify the zones of local peaks, not to supply
exact data.
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