HW V4 / © 2005 – 2013 Aaronia AG, DE-54597 Strickscheid
28
Manual Spectran V4
Functional description
5.3.14. Disp
(display mode)
The Disp setting is used for switching between a few
different display modes:
Write
-does not change the display behaviour at all and is the
default setting.
PkHold
(the Mode status field displays „Hold“)
-disables erasure of the spectrum display
All signals (peaks) ever displeayed by the spectrum display
stay visible permanently. Only stronger signals than those
previously measured can overwrite the display – this
obviously also includes the markers as well as the bargraph
(except with the Power meter option.)
Averag
– averages the results of several sequential
sweeps. A very handy feature for suppressing casual
interference or to smooth out the noise floor in order to
achieve improved display of very weak signals.
Simply leave this mode on for, say, 24 hours, and see all
events that have occurred during that period. The instrument
can also be used as a so-called “EVENT Recorder” for
catching signal emissions that only occur sporadically:
Simply leave the instrument running in this mode until the
expected event is “caught”. PkHold mode is also
indispensible for standard-compliant measurements using
the panning approach (see also chapter “Correct
measurement”)
A typical result acquired during a 20 minute car ride with
active PkHold mode. Immediately obvious is the exclusive
presence of T-Mobile (952 and 942 MHz) as well as
Vodafone (936MHz) cell towers.
Tip
: You can toggle between PkHold and Write mode at any time by pressing the dot key.
