7.10 Range
(dynamics)
The
range
setting determines the “scaling“ of the visible part of the spectrum. It
also provides
linear
and
logarithmic
display modes.
In the linear display mode, level changes of weak and strong signals are visua-
lized equally, without artificial scaling/distortion.
To visualize very weak signals more clearly, you can use the logarithmic display
mode, where small level changes will result in large changes in the graphical dis-
play. Furthermore, the stronger the signal becomes, the more “compressed“ it
will become in the display. But please note that changes in very strong signals
will not be as clearly visible as with linear mode: the display is distorted to bet-
ter visualize small level changes in very weak signals.
Linear
= linear display
l
og10
= logarithmic display with maximum enlargement
log100
= logarithmic display with medium enlargement
lg1000
= logarithmic display with optimum overview
Setting the range to lg1000 (maximum) provides the clearest possible overview
of all signal sources. The lg100 and lg10 settings in turn provide more detail,
however, parts of the signal sources above or below could now be “cut off“. The
range
setting can be therefore compared with a “magnifying glass“ that only
affects the Y axis. The vertical bars caused by the individual signals are virtual-
ly “squeezed“ in order to be able to display them all.
7.11 Atten
(attenuator)
[Key 0]
An
attenuator
, as the name implies, attenuates
the signal by the corresponding amount in dB.
This makes sense particularly with very strong
signals, for example, to avoid overloading the external SMA input. Possible choi-
ces are:
Auto
= An appropriate attenuator is chosen automatically (10dB and 20dB)
0dB
= No attenutator (highest sensetivity)
10dB
= Attenuate input signal by 10dB
20dB
= Attenuate input signal by 20dB (only NF-5020/5030!)
30dB
= Attenuate input signal by 30dB (only NF-5020/5030!)
40dB
= Attenuate input signal by 40dB (only NF-5020/5030!)
NOTE:
You
always
have to set the 0dB, 30dB and 40dB attenuator manually.
They will
not
be set with the “Auto” function!
Range
(dynamics)
Firmware V 1.0 / © 2005-2013 by Aaronia AG, D-54597 Euscheid, www.aaronia.com
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7.0 The main menu
