Spectrum Scope Screen; D Center Mode - Icom IC-7600 Instruction Manual

4
RECEIVE AND TRANSMIT

■ Spectrum scope screen

Ths DSP-based spectrum scope allows you to ds-
play the frequency and relatve sgnal strength of
receved sgnals on the strengths of sgnals. The IC-
7600 has two modes for the spectrum dsplay— one
s center mode, and the other s fxed mode.
In addton, the IC-7600 has a mn scope screen to
save screen space.

D Center mode

Dsplays sgnals around the set frequency wthn the
selected span. The set frequency s always dsplayed
at the center of the screen.
q Push [EXIT/SET] several tmes to close a mult-
functon screen, f necessary.
w Push [SCOPE] (F-1) to select the scope screen.
e Push [CENT/FIX] (F-5) several tmes to select the
center mode.
• " " s dsplayed when center mode s selected.
r Push [SPAN] (F-1) several tmes to select the
scope span.
• ±2.5, ±5.0, ±10, ±25, ±50, ±100 and ±250 kHz are
avalable.
• Push and hold [SPAN] (F-1) for 1 sec. to return to ±2.5
kHz span.
• Sweep speed s selectable for each span ndepen-
dently n scope set mode. (pgs. 68, 69)
t Push [ATT] (F-2) several tmes to actvate an
attenuator or turn the attenuator OFF.
• 10, 20 and 30 dB attenuators are avalable.
• Push and hold [ATT] (F-2) for 1 sec. to turn OFF the
attenuator.
y Push [MARKER] (F-3) several tmes to turn the
marker for transmt frequency and/or sub readout
frequency ON or OFF.
• " " dsplays the marker at the transmt frequency.
• " " dsplays the marker at the sub readout frequency.
• "<<" or ">>" appears when the marker s out of range.
• The spectrum scope shows the transmt sgnal whle
transmttng. Ths can be deactvated n scope set
mode. (p. 68)
• The spectrum scope shows the peak level hold func-
ton. Peak levels are dsplayed n the background of the
current spectrum n a dfferent color. Ths can be deac-
tvated and the waveform color can be set n scope set
mode. (p. 68)
u Push [HOLD] (F-4) to freeze the current spectrum
dsplay.
• " " appears whle the functon s n use.
• Push and hold [HOLD] (F-4) to clear the current spec-
trum waveform.
i Push [EXIT/SET] to ext the scope screen.
NOTE: If a strong sgnal s receved, a ghost sgnal
may also appear. Push [ATT] (F-2) several tmes
to actvate the spectrum scope attenuator n ths
case.
65
HOLD CENT/FIX
F-4
F-1 F-2
/
SCOPE ATT
SPAN MARKER
• Scope spurious signal example
Spurous sgnals may be receved on the spectrum
scope screen regardless of the transcever's state
(TX or RX). They are generated n the scope crcut.
Ths does not ndcate a transcever malfuncton.
Scope spurious example
F-5
F-3 EXIT/SET
Appears