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10
Problem
Possible Solutions
It still makes a noise when
inside a headnet/behind
my screening
The audio produced by the Acoustimeter is
logarithmic in volume, so even quiet signals can
seem quite loud. Check the figures that the
Acoustimeter is displaying for an accurate measure
of how effective your screening is. Close to
transmitting sources it is likely that you will still
hear something.
You may have a gap in your screening. Even small
gaps (including above and below you) will let in
microwave signals.
Your screening material may have deteriorated over
time.
The levels are very low, but
I can just hear a slow,
regular, ticking (a bit like a
very faint heartbeat)
This is the instrument picking up the noise of its
own internal meter circuitry and not external
microwave signals. This will only happen if the
external field levels are well below 0.02 V/m.. The
displays will not show that any signals are present.
The peak signal is high, but
the average signal is low.
This is normal and to be expected from modern
digital microwave frequency signals.
The instrument is on, but
the LCD screen is blank or
shows a row of black
squares
The instrument is stuck because it was turned off
then on too quickly. Make sure that you leave 1
second between turning it off and turning it on
again.
The instrument makes
three loud beeps from time
to time
This is an indication that the batteries need
replacing. Check for a “Low battery” screen message
next the time it beeps.
Guarantee
The Acoustimeter comes with a 2 year return-to-base Manufacturer’s Guarantee.
Please contact us (see page 12) for details and to arrange a return if required. It is
guaranteed to be free of manufacturing defects, but not against wear from normal
use, nor damage caused by water or by physical impacts such as from dropping it.
It has a degree of overload protection built -in, but it should not be used next to
high-powered RF transmitters that are likely to grossly overload it. Approach these
with caution and watch the displays to avoid gross overload.
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