SPECTRAN as an
“EVENT RECORDER“
for recording intermittent signals: just
leave SPECTRAN running in
HOLD
mode until the requested event occurs.
HOLD
mode is also indispensible for conducting measurements according to the
panning approach
(see also the section about “correct measurement“)
Another application where
HOLD
mode is
extremely helpful
is
exposure limit
calculation
: You can use data acquired in
HOLD
mode for quick and easy com-
parison of exposure limits. You do
not even
need to start a new measurement,
as all markers and other relevant information are preserved. Please just switch
to
exposure limits
mode after measurement, and the corresponding result is
displayed immediately.
HINT:
You can switch
HOLD
mode on and off at any time
by pressing the dot key (switching it off deletes the HOLD memory).
ATTENTION:
Please note that when using the Reference Level “Auto“ setting in
combination with HOLD mode, the spectrum display can quickly get “filled up“
because of the automatic scaling. Such a combination of settings is generally of
limited use.
7.15 Unit
(Select physical unit)
The
Unit
setting allows you to specify the physical unit used to display measu-
rement results. Options are "Tesla", "Gauss" and "A/m". Two further options,
“Volt“ (external SMA connector) and “V/m“ (E-field sensor) are automatically
chosen when the corresponding sensor is selected.
Hint:
In “EXPOSURE LIMITS“ mode, the measurement result additionally gets
displayed as a figure and bargraph. In this mode you can display the result with
two units AT ONCE
(for example, Gauss and Tesla SIMULTANEOUSLY).
Hint2:
You can even use this feature for
conversion
of units. Simply “freeze“ the
current reading by using HOLD mode, then choose a different unit. The conver-
sion result will be displayed immediately (as far as physically possible).
7.0 The main menu
Firmware V 1.0 / © 2005-2013 by Aaronia AG, D-54597 Euscheid, www.aaronia.com
29
A typical measurement result after evaluating a room for 20 minutes
with
HOLD
mode active. You can clearly see that only two main signal
sources / frequency bands have been detected during the entire mea-
surement (30Hz and 50Hz).
