Gigahertz Solutions HFW35C Bedienungsanleitung Seite 16

Made in Germany
country is, however, expected to be accomplished within the com-
ing two years. Therefore, for the time being, the HFW35C can be
considered as a device enabling to exclude potential stronger expo-
sures caused by these sources at the respective site. This already is
an important information.
The presently most frequently measured appliances are Bluetooth
appliances found at the lowest end of the involved frequency
range... Questions related to this field:
"Even when transmitting data with my notebook, only low val-
ues are shown on the display"
Answer:
Thanks to the integrated transmitting power control, the notebook
won't draw more power than needed for its communication with the
remote station. However, if you measure within splitting distance to
a notebook just transmitting data wireless, you will obtain values, at
least in the finer measuring range.
"No measurement values obtained, even directly next to my
WLAN/Bluetooth-compatible notebook..."
"...although the display indicates: 'searching wireless connec-
tions'"
Answer:
While searching a network, the notebook is basically not transmit-
ting itself, so obviously no measurements can be obtained.
"...although my notebook shows various networks with good
reception"
Answer:
A notebook has no problems with the reception, even if the signal
strength is a factor 1000 or more below the lowest display value of
the measuring device or below the building biology recommenda-
tions.
"In the finer measuring range, the HFW never shows values
lower than 0.3 to 0.5 μW/m² (with or without antenna)"
Answer:
This is the residual noise of the device. It would be easy to wire the
display in such a way that it would approach zero as soon as only
little values are shown, thus suggesting higher precision (paradoxi-
cally, the producer himself even recommends to do so!). However,
we do not consider this useful, and prefer to indicate the residual
noise the way it is. Yet, if measurements without antenna reach val-
ues beyond 0.9 μW/m² within the fine measurement range (or 9
within the coarse measurement range), you should return the device
for investigation, as this does no longer correspond to the specifica-
tions.
Simple testing method:
Take measurements only few meters away from an active point of
access (e.g. "DSL-WLAN-router). Its "heartbeat", the well known
"tac-tac-tac...", will be clearly audible, and the corresponding
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