5.6 Exposure limits mode
(The DISPLAY MODE status field displays “EXPOS.-LIMITS”)
Press the Enter key until the
display mode status
field shows “EXPOS.-LIMITS“.
As usual, the strongest signals will be shown along with
their frequencies and levels as markers, as in the spec-
trum analysis mode. The large main display will again
show the level of the strongest signal found.
However, in the graphics display below, the strongest sig-
nal will be shown now as a percentage in relation to an
exposure limit: As various very different exposure limits
and recommendations are existing for the various fields
of interest and professional groups, SPECTRAN offers an
entire range of different exposure limits. You can select the desired
exposure limit by using the right/left cursor keys. Find a more detai-
led introduction to these exposure limits on pages 47 and following in this
manual.
Please try it yourself: Select all the different exposure limits and compare the
results. The available exposure limits are:
xTESLA = Shows the readout in Tesla
ICNIRP = ICNIRP recommendation also German limit (General population)
BGRB11 = BGFE limit for workplace exposition (exposition class 2)
BImSch = 26. BimSchV (Indutrial German limit) (only 16,66Hz, 50Hz, >10MHz)
TCO99 = International limit for computer screens (only from 5Hz-400kHz)
In our fictional example, the exposure limit bargraph shows an approximation to
the German ICNIRP limit of 69%. When EXCEEDING the exposure limit, the dis-
play will show percentages above 100% (for example, 128,00 = limit exceeded
by 28%). When exceeding the exposure limit by more than 999.99%, the display
will show “***.**”, indicating overflow.
5.0 Your first measurement / Modes
Firmware V 1.0 / © 2005-2013 by Aaronia AG, D-54597 Euscheid, www.aaronia.com
14
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