Center Mode - Icom IC-7851 Instruction Manual

6
SCOPE OPERATION
■
Spectrum scope screen (Continued)
D Center mode
Displays signals around the operating frequency within
the selected span. The operating frequency is always
displayed in the center of the screen.
 The Multi-function screens are OFF:
q
Push [SCOPE](F).
• The Spectrum scope screen is displayed.
w
Push [CENT/FIX](F).
• "
" is displayed when the Center mode is se-
CENTER
lected.
• Push [CENT/FIX](F) to toggle between the Center and
Fixed modes.
e
Push [SPAN](F) several times to select the scope
span.
• Selectable span
±2.5, 5.0, 10, 25, 50, 100, 250 and 500 kHz
• Hold down [SPAN](F) for 1second to select the ±2.5 kHz
span.
r To exit the Spectrum scope screen, push [EXIT/SET].
The Marker display in the Center mode
The Marker displays the operating frequency of the
Main or Sub band in the
ever, the operating frequency stays on the Center of
the screen when the Center mode is selected. Thus,
the transceiver does not display the MAIN maker on the
Main scope, nor the SUB maker on the Sub scope.
• When the Hold function is ON, the Maker is displayed
to display the operating frequency's position.
• Marker types
: Main marker displays the operating frequency
for Main band.
: Sub marker displays the operating frequency
for Sub band.
: TX marker displays the transmit frequency.
➥
Push [MARKER](F) to select the marker.
• When
Main scope is selected:
SUB, TX/SUB, TX, Marker OFF
• When
Sub scope is selected:
MAIN, TX/MAIN, TX, Marker OFF
• When the Maker is displayed and the frequency is
out of range, "<<" or ">>" appears at the upper side
corners of the Spectrum scope
<<: The frequency is too low.
>>: The frequency is too high.
Spectrum scope screen. How-
screen.
(F) Function keys
• Center mode screen
• Center mode screen (Example: Span
• TX marker is ON
6-4
[EXIT/SET] [MAIN DIAL]
±500 kHz
)