Icom IC-7760 handleiding
Handleiding
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4-4
BASIC MANUAL
4
RECEIVING AND TRANSMITTING
Using the Digital Twin PBT
SSB, CW, RTTY, PSK, and AM modes
To reject interference, the Digital Twin Passband
Tuning (PBT) narrows the IF passband width by
electronically shifting the IF frequency to slightly
above or below the IF center frequency. The IC-7760
uses the digital function using the FPGA (Field
Programmable Gate Array) ltering method.
L Each band memorizes the PBT setting.
z Rotate
TWIN PBT
CLR
inner (PBT1) and outer (PBT2)
to adjust the shift value.
• The passband width and shift value
are displayed.
• The indicator to the left of
TWIN PBT
CLR
lights white when you use the Digital
Twin PBT to change the IF passband width.
L Hold down
TWIN PBT
CLR
for 1 second to clear the PBT
setting.
TIP:
• A dot “·” is displayed on the IF Filter indicator when you
change the IF passband width, using the Digital Twin
PBT.
• Touch the IF Filter indicator for 1 second to display the
current passband width and shift value.
Opens the FILTER screen.
PBT1
PBT2
SFT: Shift value
Passband center
frequency
IF center frequency
BW: Passband
width
Default value
Cutting
lower passband
Cutting both higher and
lower passbands
D Using the Filter Eect screen
Passband width
Shift value
Passband width
Shift value
Main/Sub
band icon
L Information
• To narrow the IF passband width, shift “PBT1” and “PBT2”
in the opposite direction from each other, to narrow the
overlapped area.
• To use as the IF Shift function, set “PBT1” and “PBT2” to
the same value.
• The PBT is adjustable in 50 Hz steps in the SSB, CW,
RTTY, and PSK modes, and 200 Hz in the AM mode. The
center shift value changes in 25 Hz steps in the SSB,
CW, RTTY, and PSK modes, and 100 Hz in the AM mode.
NOTE: While rotating
TWIN PBT
CLR
, you may hear
some noise. This comes from the FPGA and does
not indicate an equipment malfunction.
TWIN PBT
CLR
Lights white when you change
the IF passband width
PBT1
PBT2
PBT1
PBT2
Displayed when you change
the IF passband width.
To display the keys,
touch the screen.
IF center frequency
Interference
Interference
IF center frequency IF center frequency
Interference
Passband Desired signal
Bekijk gratis de handleiding van Icom IC-7760, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Icom |
| Model | IC-7760 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 18538 MB |
