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the narrower the better. Nonetheless, extremely low background noise in a
narrow spectrum exposes the residual responses of the apparatus (also known
as dots), even making them dazzling.
(10) Normally the spectrum adopts peak detector, and the setting
entrance locates in the second page of the mode main menu. This parameter
does not worth attention unless the user is paticular with spectrum, like
reading number using the marker.
(11) Press MODU button to enter demodulation setting menu. Level
measurements parameters are also in here.
Firstly, set demodulation. In MODU menu, select DEMOD option and
adjust it using knobs or left/right key. For example, set to FM for measuring
modulated broadcating.
Secondly, set demodulating bandwidth. Select DEMOD BW and adjust using
knobs or left/right key. Additionally, it can be specified using CUSTOM option.
Demodulating bandwidth is the detection bandwidth of the level meter as
well.
The highlighted area of the spectrum represents the demodulating
bandwidth. This highlight function can be switched on/off in setting. The
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