Spectrum Scope Screen - Icom IC-756PRO Instruction Manual

5
RECEIVE AND TRANSMIT

Spectrum scope screen

This function allows you to display the relative
strengths of signals around the center frequency. The
span can be set to ±12.5 kHz, ±25 kHz, ±50 kHz and
±100 kHz. Ideal for monitoring band conditions in an
instant.
q Push [EXIT] one or more times to close a multi-
function screen, if necessary.
w Push [(F-1)SCOPE] to select the scope screen.
qr≥qot≥pp
e Push [(F-1)SPAN] one or more times to select the
scope span.
r Push [(F-2)ATT] one or more times to activate an
attenuator or turn the attenuator OFF.
• 10, 20 and 30 dB attenuators are available.
t Push [(F-3)MARKER] one or more times to select
the marker (sub readout or transmit frequency) or
turn the marker OFF.
• "TX MARKER" displays the marker at the transmit fre-
quency.
• "SUB MARKER" displays the marker at the sub read-
out frequency.
qr≥qot≥pp
qr≥wpq≥pp
Appears when the
marker is out of range.
y Push [(F-4)HOLD] to freeze the current spectrum
waveform.
• "HOLD" appears while the function is in use.
u Push [EXIT] to exit the scope screen.
44
qw pp
qr≥wpq≥pp
qw pp
Sub readout Appears when the
or TX marker marker is out of range.
• Spectrum scope during transmitting
The spectrum scope shows the transmit signal wave-
form while transmitting. This can be deactivated if de-
sired.
When "OFF" is selected, the spectrum scope holds
the received waveform while transmitting and does
not show the transmit waveform.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [F-1] to select the "Scope during Tx" item.
r Rotate the tuning dial to display the spectrum
scope while transmitting or not.
t Push [EXIT] to exit keyer set mode.
• Maximum level hold function
The spectrum scope shows the peak level holding
function. Peak levels are displayed in the background
of the current spectrum in a different color until the re-
ceive frequency changes. This can be deactivated if
desired.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [F-2] to select the "Max Hold" item.
r Rotate the tuning dial to turn the peak level holding
function ON or OFF.
t Push [EXIT] to exit keyer set mode.
If a strong signal is received, ghost waveform may
appear. Push [(F-2)ATT] one or more times to acti-
vate the spectrum scope attenuator in this case.