Icom IC-7800 User Manual

5-2
■ Spectrum scope screen
This DSP-based spectrum scope allows you to display
the conditions on the selected band, as well as relative
strengths of signals. The IC-7800 has two modes for
the spectrum indication— one is center mode, and an-
ther one is fix mode.
In addition, the IC-7800 has a mini scope screen to
save screen space.
D Center mode
Displays signals around the set frequency within the
selected span. The set frequency is always displayed
at the center of the screen.
[F-3•MARKER]
[F-2•ATT]
[F-1•SPAN] [EXIT/SET]
[F-5•CENT/FIX][F-4•HOLD]
[F-6•MAIN/SUB]
q Push [EXIT/SET] several times to close a multi-func-
tion screen, if necessary.
wPush[F-1•SCOPE]toselectthescopescreen.
 •Push [F-7•WIDE/SET] to toggle the screen size be-
tween normal and wide.
ePush[F-5•CENT/FIX]toselectthecentermode.
 • “ ” is displayed when center mode is selected.
rPush[F-1•SPAN]severaltimestoselectthescope
span.
 •±2.5,±5.0,±10,±25,±50,±100and±250kHzarese-
lectable.
 •Sweepingspeedisindependentlyselectableforeach
span in scope set mode. (pp. 5-5, 5-6)
tPush[F-2•ATT]severaltimestoactivateanattenu-
ator or turn the attenuator OFF.
 •10,20and30dBattenuatorsareselectable.
yPush[F-6•MAIN/SUB]toselectmainband.
 • The spectrum scope with sub band selection is activated
during dualwatch or split frequency operation only.
uPush [F-3•MARKER] severaltimestoselect the
marker (sub readout or transmit frequency) or turn
the marker OFF.
 •“ ” displays the marker at the transmit frequency.
 •
“ ” displays the marker at the sub readout frequency.
 •“<<”or“>>”appearswhenthemarkerisoutofrange.
 •Thespectrumscopeshowsthetransmitsignalwave-
form while transmitting. This can be deactivated in
scope set mode. (p. 5-4)
 •Thespectrumscopeshowsthepeaklevelholdingfunc-
tion. Peak levels are displayed in the background of the
current spectrum in a different color until the receive
frequency changes. This can be deactivated and the
waveform color can be set in scope set mode. (p. 5-5)
iPush[F-4•HOLD]tofreezethecurrentspectrum
waveform.
 •“ ” appears while the function is in use.
 •Thepeakholdfunctioncanbedeactivatedinscopeset
mode.
o Push [EXIT/SET] to exit the scope screen.
NOTE: If a strong signal is received, a ghost wave-
formmayappear.Push[F-2•ATT]severaltimesto
activate the spectrum scope attenuator in this case.
Spurious signal waveforms may be displayed. They
are generated in the internal scope circuit and do
not indicate a transceiver malfunction.
5
FUNCTIONS FOR RECEIVE
• Spectrum scope
Waterfall

Icom IC-7800 Specifications

General

Brand	Icom
Model	IC-7800
Category	Transceiver
Language	English