Icom IC-7760 handleiding
Handleiding
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4-9
BASIC MANUAL
RECEIVING AND TRANSMITTING
4
4
Digital Selector
You can manually adjust the center frequency of
the automatic preselector using the Digital Selector
function.
The automatic preselector adds to reduce
intermodulation distortion from nearby strong signals.
The automatic preselector tracks the frequency tuning
by changing its resonant frequency in discrete steps.
The function is used for only 1.500000 MHz ~
29.999999 MHz.
L Each band memorizes the Digital Selector function
setting.
L When the Digital Selector function is ON, the circuit
conguration diers, depending on the setting of the
receive preamplier.
-
When the preamplier is set to “OFF”:
A lter is inserted in the rst stage, where high-frequency
frequencies pass through, to get the full ltering eect.
- When the preamplier is set to “P.AMP 1” or ”P.AMP 2”:
A lter is inserted after the preamplier, to lter without
loss of sensitivity.
z Touch [DIGI-SEL].
L Touching [DIGI-SEL] turns the Digital Selector function
ON or OFF.
D Adjusting the center frequency
1. Touch [DIGI-SEL] for 1 second.
• Opens the Multi-function menu.
2. Rotate
MULTI
to adjust the center frequency.
3. To close the Multi-function menu, push
MULTI
.
NOTE:
• The Digital Selector function is automatically
turned OFF while scanning.
• When you rotate
MAIN
DIAL
while the Digital
Selector is ON, mechanical noise may be heard
due to the switching noise from internal relays.
DPD function
SSB and AM modes
The Digital Pre-Distortion (DPD) function reduces
the distortion of the SSB, SSB-D, AM, or AM-D mode
signals transmitted by the transceiver.
When the transceiver is used as an exciter for the
IC-PW2, the distortion generated by the RF power
amplier is also reduced.
There are 2 ways to use the DPD function.
Use the DPD function only with the transceiver:
The DPD single adjustment* (Adjustment only with the
transceiver) is made at the factory. The DPD function
can be used without the adjustment.
* By adjusting the ALC circuit voltage and gain in the FPGA,
sudden changes in the gain of the ALC circuit behind
the FPGA can be minimized, enabling optimal distortion
correction.
L This also applies when the IC-PW2 is connected, but the
linear amplier circuit is OFF.
L When the linked adjustment cannot be performed, make
the single adjustment. See the Advanced manual for
details.
Use when operating the transceiver as an exciter
for the IC-PW2:
The DPD linked adjustment (Adjustment linked with
the IC-PW2) for each operating band is required.
L See the Advanced manual for details.
D Turning the DPD function ON or OFF
1. Select the operating mode. (Example: USB)
2. Push
FUNCTION
.
3. Touch [DPD].
L Touching [DPD] turns the DPD function ON or OFF.
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 |
