Icom IC-7850 Instruction Manual page 120

D Operating the Spectrum scope
 The Multi-function screens are OFF:
Push [SCOPE](F).
q
• The Spectrum scope screen is displayed.
Function
<MENU1>
Selects the Function menu.
<MENU2>
When the Center mode is selected, selects
the scope span.
• Selectable spans: ±2.5, 5.0, 10, 25, 50,
SPAN
• Hold down for 1 second to select the ±2.5
kHz span.
When the Fixed mode is selected, selects
the Edge frequencies.
EDGE
• Upper and lower edge frequencies can be
set in the Scope set screen.
Push
ATT
Hold down Turns OFF the attenuator.
Push
HOLD
Hold down Clears the Peak hold level.
CENT/FIX Selects the Center or Fixed mode.
Push
M/S
DUAL
Hold down
Push
EXPD/
SET
Hold down Enters the Scope set screen.
Displays the Reference level window.
(p. 6-8)
REF • Push again to close the window.
• Rotate [MAIN DIAL] to adjust the Refer-
ence level.
Selects the sweep speed.
SPEED • "," "," or "" displays FAST, MID, or
SLOW.
MARKER Selects the Marker.
• The Spectrum scope with Sub band selection is
enabled only when the Dualwatch or Split frequen-
cy operation.
To exit the Spectrum scope screen, push [EXIT/
w
SET].
NOTE: If a strong signal is received, a ghost wave-
form may appear. If it appears, push [ATT](F) several
times to enable the Scope attenuator.
Action
100, 250 and 500 kHz
Selects the Scope attenuator.
• OFF, 10 dB, 20 dB, 30dB
Selects the Hold function ON or
OFF.
Selects the Main or Sub band.
Selects the Dual or Single
scope.
Selects the Expanded or Nor-
mal screen.
(F) Function keys
• Spectrum scope screen
• Function menu (MENU2)
• Fixed mode screen (Dual scope)
6-3
SCOPE OPERATION
[EXIT/SET]
6