Icom IC-7760 Advanced Manual page 55

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.
L To change only the waterfall speed, select "Slow," "Mid,"
or "Fast" in the Waterfall Speed.
L With dual scopes displayed, touch the scope you want to
set. It will be framed in orange.
1. Display the SPECTRUM SCOPE screen.
» SCOPE
MENU
2. Touch [< MENU1 >] to display MENU 2.
3. Touch [SPEED] several times until the desired
sweep speed is selected.
• Selectable speeds: FAST, MID, or SLOW
L "," "," or "" indicates FAST, MID, or SLOW.
L 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.
Displayed
D 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.
L Each band memorizes the setting.
1. Display the SPECTRUM SCOPE screen.
» SCOPE
MENU
2. Touch [< MENU1 >] to display MENU 2.
3. Touch [REF].
4. Rotate
MAIN DIAL
• Adjustable range: –30.0 dB ~ +10.0 dB
L You can reset to the ±0.0 dB default value by
touching [DEF] for 1 second.
5. To close the REF Level window, touch [REF].
The difference in the spectrum
Reference level
(+10.0 dB)
+10.0 dB
±0.0 dB
–30.0 dB
L 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.
3-5
Displayed
to adjust the level.
(–30.0 dB)