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3-1
3� SCOPE OPERATION (ADVANCED)
Spectrum Scope screen
D
Adjusting the sweep speed
Select the sweep speed to change the FFT
scope refresh speed and the waterfall speed.
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To change only the waterfall speed, select “Slow,”
“Mid,” or “Fast” in the Waterfall Speed.
1. Display the SPECTRUM SCOPE screen.
»
SCOPE
2. Touch [< 2 >] to display MENU 2.
3. Touch [SPEED] several times until the
desired sweep speed is selected.
• Selectable speeds: FAST, MID, or SLOW
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“
,” “
,” or “
” indicates FAST, MID, or
SLOW.
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A popup window is displayed in the center of the
SPECTRUM SCOPE screen and displays the
selected sweep speed for 1 second.
“
,” “
,” or “
” is displayed.
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Adjusting the Reference level
When monitoring a weak signal that is buried in
the noise floor, or monitoring a strong signal but
some stronger signals are nearby, adjusting the
Reference level of the screen helps you to see
these signals.
• Even if this setting is changed, it does not affect the
input signal level.
• When you adjust the Reference level, the signal
strength for the waterfall also appears to change.
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Each band memorizes the setting.
1. Display the SPECTRUM SCOPE screen.
»
SCOPE
2. Touch [< 2 >] to display MENU 2.
3. Touch [REF].
4. Rotate
to adjust the level.
• Adjustable range: –20.0 dB ~ +20.0 dB
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You can reset to ±0.0 dB by touching [DEF] for
1 second.
5. To close the REF Level window, touch [REF].
The difference in the spectrum
Reference level
(+20.0 dB)
(–20.0 dB)
+20.0 dB
–20.0 dB
±0.0 dB
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If you adjust this setting to a positive level, all
signal levels appear stronger.
Or, if you adjust to a negative level, all signal
levels appear weaker.