Icom IC-905, Основное руководство

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5-2
BASIC MANUAL
5
SCOPE OPERATION
Spectrum scope screen
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.
1. Display the SPECTRUM SCOPE screen.
»
SCOPE
2. Touch [CENT/FIX] to select the Center mode.
L
Touch [CENT/FIX] to toggle between the Center and
Fixed modes.
3. Touch [SPAN] to open the scope span window.
4. Touch [+] or [–] to select the scope span.
• ±2.5 kHz, ±5.0 kHz, ±10 kHz, ±25 kHz, ±50 kHz,
±100 kHz, ±250 kHz, ±500 kHz, ±1.0 MHz, ±2.5 MHz,
±5.0 MHz, ±10 MHz, ±25 MHz
L
Touch [SPAN] again to close the window.
L
Touch [+] for 1 second to select the ±25 MHz span
(maximum), and Touch [–] for 1 second to select the
± 2.5 kHz span (minimum).
D
Fixed mode
Displays signals within a specified frequency range.
The selected frequency band activity can easily be
observed in this mode.
Four Fixed Edge bands can be set for each amateur
frequency band covered by the transceiver in the
SCOPE SET screen.
1. Display the SPECTRUM SCOPE screen.
»
SCOPE
2. Touch [CENT/FIX] to select the Fixed mode.
L
Touch [CENT/FIX] to toggle between the Center and
Fixed modes.
3. Touch [EDGE] several times to select the Edge
frequency.
L
When the operating frequency moves outside
the lower or upper Edge frequency, “<<” or “>>”
is displayed in the upper side corners of the
SPECTRUM SCOPE screen.
<<: The frequency is outside the lower edge.
>>: The frequency is outside the higher edge.
When the frequency goes further away, “Scope Out
of Range” is displayed.
D
Scroll mode
Displays signals within a selected span. When the
operating frequency moves outside of the screen, the
displayed frequency range is automatically scrolled.
1. Display the SPECTRUM SCOPE screen.
»
SCOPE
2. Touch [CENT/FIX] for 1 second to select the
Scroll mode.
• When changing the Center mode to the Scroll mode,
“SCROLL-C” is displayed. You can change the scope
span by touching [SPAN].
• When changing the Fixed mode to the Scroll mode,
“SCROLL-F” is displayed. You can change the Edge
frequencies by touching [EDGE].
3. Touch [CENT/FIX] to return to the previous mode.
• When returning to the Center mode, the scope span
does not return to the previous setting.
• When returning to the Fixed mode, the Edge
frequencies return to the last selected “Fixed Edges.”
If the operating frequency is below the lower Edge
frequency, or above the upper Edge frequency, “<<”
or “>>” is displayed in the upper side corners of the
SPECTRUM SCOPE screen.
D
Marker
The Marker displays the operating frequency in the
SPECTRUM SCOPE screen.
R: The RX marker
• Marks the receive frequency.
T: The TX marker
• Marks the transmit frequency.
• About RX Marker
In the Fixed mode and the Scroll mode, the RX
Marker displays the operating frequency within a
specified frequency range. So, the transceiver always
displays the RX marker in the Scope screen.
In the Center mode, the operating frequency stays in
the center of the screen. Thus, the transceiver does
not display the RX Marker.
L
When the Hold function is ON, the RX Marker is displayed
to indicate the operating frequency’s location.
–25 kHz
Center mode +25 kHz
144.000 MHz
Fixed mode
144.500 MHz