ICOM IC-756PRO2 Manuale Utente

45

5

RECEIVE AND TRANSMIT

■

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/SET] several times to close a multi-
function screen, if necessary.

w

Push [(F-1)SCOPE] to select the scope screen.

e

Push [(F-1)SPAN] several times to select the
scope span.

r

Push [(F-2)ATT] several times to activate an atten-
uator or turn the attenuator OFF.

• 10, 20 and 30 dB attenuators are available.

t

Push [(F-3)MARKER] several 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 readout

frequency.

y

Push [(F-4)HOLD] to freeze the current spectrum
waveform.

• “HOLD” appears while the function is in use.

u

Push [EXIT/SET] to exit the scope screen.

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/SET] to exit spectrum scope set mode.

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/SET] to exit spectrum scope set mode.

If a strong signal is received, ghost waveform may
appear. Push [(F-2)ATT] several times to activate
the spectrum scope attenuator in this case.

DEF

DEF

é

è

VOX

VOX
OFF

OFF

COMP

COMP

OFF

OFF

WIDE

WIDE

AGC

AGC
MID

MID

S c o p e

S c o p e   d u r i n g

d u r i n g   T x 

T x 

O N 

O N 

M a x

M a x   H o l d 

H o l d 

O N

O N

S C O P E

S C O P E   S E T

S E T

DEF

DEF

é

è

VOX

VOX
OFF

OFF

COMP

COMP

OFF

OFF

WIDE

WIDE

AGC

AGC
MID

MID

S c o p e

S c o p e   d u r i n g

d u r i n g   T x 

T x 

O N 

O N 

M a x

M a x   H o l d 

H o l d 

O N

O N

S C O P E

S C O P E   S E T

S E T

BW

BW

2.4k

2.4k

SFT

SFT

0

FIL2

FIL2

U S B

U S B

qw:pp

TX

TX

VFO

VFO

USB

USB

USB

USB

USB

USB

FIL2

FIL2

qr.qot.pp

qr.wpq.pp

14.100.00

14.100.00

14.100.00

14.100.00

1

1

VFO

VFO

SUB

SUB

MARKER

MARKER

ATT

ATT

10dB

10dB

HOLD

HOLD

Grid

Grid
2.5k

2.5k
10dB

10dB

+12.5k

+12.5k

-12.5k

-12.5k

SPECTRUM  SCOPE

SPECTRUM  SCOPE

ANT

ANT

1

METER

METER

Po

Po

ATT

ATT
OFF

OFF

VOX

VOX
OFF

OFF

COMP

COMP

OFF

OFF

WIDE

WIDE

AGC

AGC
MID

MID

P.AMP

P.AMP

1

HOLD

HOLD

SET

SET

SPAN

SPAN

ATT

ATT

MARKER

MARKER

Appears when the 
marker is out of range.

Sub readout 
or TX marker

Appears when the 
marker is out of range.

ANT

ANT

1

METER

METER

Po

Po

ATT

ATT
OFF

OFF

VOX

VOX
OFF

OFF

COMP

COMP

OFF

OFF

WIDE

WIDE

BW

BW

2.4k

2.4k

SFT

SFT

0

FIL2

FIL2

U S B

U S B

qw:pp

AGC

AGC
MID

MID

TX

TX

VFO

VFO

USB

USB

USB

USB

USB

USB

FIL2

FIL2

qr.qot.pp

qr.wpq.pp

14.100.00

14.100.00

14.100.00

14.100.00

1

1

VFO

VFO

Grid

Grid
2.5k

2.5k
10dB

10dB

+12.5k

+12.5k

-12.5k

-12.5k

SPECTRUM  SCOPE

SPECTRUM  SCOPE

HOLD

HOLD

SET

SET

P.AMP

P.AMP

1

SPAN

SPAN

ATT

ATT

MARKER

MARKER