ICOM 381801 Manuale Utente

TABLE OF CONTENTS

PREFACE ................................................................... i
IMPORTANT ............................................................... i
TRADEMARKS ........................................................... i
EXPLICIT DEFINITIONS ............................................ i
FEATURES .................................................................ii
ABOUT THE SDR WIDEBAND RECEIVER CIRCUITS ...ii
VOICE CODING TECHNOLOGY ...............................ii
SUPPLIED ACCESSORIES .......................................ii
FCC INFORMATION .................................................iii
ABOUT THE INSTRUCTIONS ..................................iv

DAbout the touch operation ..............................iv

DTouch screen precautions ..............................iv

DTouch screen maintenance ............................iv

TABLE OF CONTENTS ............................................. v
PRECAUTIONS ....................................................... viii

1 PANEL DESCRIPTION .................................... 1-1

Front panel ....................................................... 1-1
Rear panel ........................................................ 1-3
Touch panel display .......................................... 1-4

DMULTI DIAL MENU (

) ...................... 1-6

DMULTI DIAL MENU (

) ...................... 1-6

DMULTI DIAL MENU (

) ...................... 1-6

DMENU screen .............................................. 1-6

DQUICK MENU ............................................. 1-6

DFUNCTION screen ...................................... 1-7

DFUNCTION items ........................................ 1-7

Keyboard entering and editing ......................... 1-7

DEntering and editing characters .................. 1-7

DKeyboard types ........................................... 1-8

DEntry example ............................................. 1-8

2 INSTALLATION AND CONNECTIONS ........... 2-1

Selecting a location .......................................... 2-1
Heat dissipation ................................................ 2-1
For desktop use ................................................ 2-1
Grounding ......................................................... 2-1
Connecting a DC power supply ........................ 2-1

DPower supply ............................................... 2-1

DTurning the receiver's power ON or OFF .... 2-1

Connecting an antenna .................................... 2-2
FSK (RTTY) connections ................................. 2-2
External device connection .............................. 2-3
Adjusting the volume level ................................ 3-1
RF gain/SQL level/Audio tone .......................... 3-1

DNoise squelch .............................................. 3-1

DS-meter squelch .......................................... 3-1

DRF gain ........................................................ 3-1

3 BASIC OPERATION ........................................ 3-1

Monitor function ................................................ 3-1
About the VFO and Memory modes ................. 3-1
Selecting the receiving mode ........................... 3-1
Selecting the receiving mode (continued) ........ 3-2
Setting the frequency ....................................... 3-2

DDirectly entering a frequency ...................... 3-2

Changing the Tuning Step ................................ 3-2

DAbout the Tuning Step (TS) function ........... 3-2

D About the Programmable Tuning Step function . 3-3

DAbout the Auto Tuning Step function ........... 3-3

Selecting the antenna ....................................... 3-3
Dial/Panel Lock function ................................... 3-3

DDial Lock function ........................................ 3-3

DPanel Lock function ..................................... 3-3

Adjusting Backlight dimmer .............................. 3-4
Fine tuning ........................................................ 3-4

DWhen receiving FM, WFM or DIGITAL signal . 3-4

DWhen receiving FSK signal ......................... 3-4

Selecting meter display ................................... 3-4

DMeter display types ..................................... 3-4

DRX Marker ................................................... 4-1

Spectrum scope screen .................................... 4-1

4 SCOPE OPERATION ....................................... 4-1

DUsing the Spectrum Scope ......................... 4-1

DSetting the span .......................................... 4-2

DSetting the range ......................................... 4-2

DSearching for the peak signal ...................... 4-3

DTouch screen operation ............................... 4-3

DMini scope screen ....................................... 4-3

DAdjusting the Reference level ..................... 4-4

DSweep speed............................................... 4-4

DScope set screen......................................... 4-5

5 OTHER FUNCTIONS ....................................... 5-1

About the Function screen ............................... 5-1

Preamplifier ......................................................5-1
Attenuator ......................................................... 5-1
Selecting the antenna ....................................... 5-1
AGC function control ........................................ 5-1
IP Plus function ................................................ 5-2
Notch Filter ....................................................... 5-2

DSetting the notching width and frequency ... 5-2

Using the Digital Twin PBT ............................... 5-2

Selecting the digital IF filter .............................. 5-3

DAdjusting the passband width ..................... 5-3

Selecting the filter shape ............................. 5-3

Noise Blanker (NB) ........................................... 5-4
Noise Reduction ............................................... 5-4
Duplex operation .............................................. 5-4
AFC function ..................................................... 5-5
Receiving in the CW mode ............................... 5-5

DSetting the CW pitch control ........................ 5-5

DAbout the CW Reverse mode...................... 5-5

Receiving FSK (RTTY) signal .......................... 5-5

DDecoded FSK data display .......................... 5-5

DDecoding FSK signal ................................... 5-5

DTurning ON the FSK log .............................. 5-6

DViewing the FSK log contents ..................... 5-7

DTwin Peak Filter ........................................... 5-7

DFSK tone and shift setting ........................... 5-7

DAbout the FSK DECODE SET screen ......... 5-8

Tone squelch function ....................................... 5-9
D.SQL (Digital Squelch) function ...................... 5-9