Icom IC-F3GS, IC-F3GT service manual Adjustment Procedures

Page 52

SECTION 5 ADJUSTMENT PROCEDURES

5-1 PREPARATION

When you adjust the contents on page 5-5 or 5-6, SOFTWARE ADJUSTMENT, the optional CS-F3G ADJ ADJUSTMENT SOFTWARE (Rev. 2.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required.

REQUIRED TEST EQUIPMENT

 

 

 

 

 

 

 

 

 

EQUIPMENT

 

GRADE AND RANGE

EQUIPMENT

GRADE AND RANGE

 

DC power supply

 

Output voltage

: 7.2 V DC

Audio generator

Frequency range

: 300–3000 Hz

 

 

Current capacity

: 5 A or more

Output level

: 1–500 mV

 

 

 

 

 

 

 

 

 

 

 

 

 

RF power meter

 

Measuring range

: 1–10 W

Attenuator

Power attenuation

: 40 or 50 dB

 

 

Frequency range

: 300–600 MHz

Capacity

: 10 W or more

 

 

 

 

(terminated type)

 

Impedance

: 50 Ω

 

 

 

 

 

 

Frequency range

: 120–600 MHz

 

 

 

SWR

: Less than 1.2 : 1

Standard signal

 

 

 

 

 

Output level

: 0.1 µV–32 mV

 

 

 

Frequency range

: 0.1–600 MHz

generator (SSG)

 

 

 

 

(–127 to –17 dBm)

 

Frequency counter

 

 

 

 

 

Frequency accuracy

: ±1 ppm or better

 

 

 

 

 

 

 

 

 

DC voltmeter

Input impedance

: 50 kΩ /V DC or better

 

 

 

Sensitivity

: 100 mV or better

 

 

 

 

 

 

 

 

 

FM deviation meter

 

Frequency range

: DC–600 MHz

Oscilloscope

Frequency range

: DC–20 MHz

 

 

Measuring range

: 0 to ±5 kHz

Measuring range

: 0.01–20 V

 

 

 

 

 

 

 

 

 

 

 

 

 

Digital multimeter

 

Input impedance

: 10 MΩ /V DC or better

AC millivoltmeter

Measuring range

: 10 mV–10 V

 

 

 

 

 

 

 

 

SYSTEM REQUIREMENTS

IBM PC compatible computer with an RS -232C serial port (38400 bps or faster)

Microsoft Windows 95 or Windows 98

Intel i486DX processor or faster (Pentium 100 MHz or faster recommended)

At least 16 MB RAM and 10 MB of hard disk space

640480 pixel display (800600 pixel display recommend- ed)

STARTING SOFTWARE ADJUSTMENT

Connect IC-F4GT/GS and PC with the optional OPC-478 and the JIG cable.

Boot up Windows, and turn the transceiver power ON. Click the program group ‘CS-F3G ADJ’ in the ‘Programs’ folder of the [Start] menu, then CS-F3G ADJ’s window is appeared.

Click the TCXO tag.

Click ‘Connect’ on the CS-F3G’s window, then appears IC-F4GT/GS’s up-to-date condition.

Set or modify adjustment data as desired.

ADJUSTMENT SOFTWARE INSTALLATION

Boot up Windows.

- Quit all applications when Windows is running.

Insert the cloning software CD-ROM into the apropriate CD-ROM drive.

Select ‘Run’ from the [Start] menu.

Type the setup program name using the full path name, then push the [Enter] key. (For example; D:\ setup) Follow the prompts.

Program group ‘CS-F3G ADJ’ appears in the ‘Programs’ folder of the [Start] menu.

IBM is a registered trademark of International Bussiness Machines Corporation in the U.S.A. and other countries. Microsoft and Windows are registered trademarks of Microsoft Corporation in the U.S.A. and other countries. Screen shots produced with permission from Microsoft Corporation. All other products or brands are registered trademarks or trademarks of their respective holders.

5 - 1

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Contents VHF FM Transceivers Ordering Parts IntroductionRepair Notes Table of Contents Section Specifications EIA/TIAMain Unit TOP View Inside ViewsBottom View Disassembly and Option Instructions Disassembly InstructionRemoving the Chassis Panel Removing the Main UnitOptional Unit Installations Circuit Description Receiver CircuitsTransmitter Circuits Power Supply Circuits Voltage Line PLL CircuitPort Allocations Output Expander IC IC10Adjustment Procedures Preparation¥ JIG cable Top view PLL Adjustment Software Adjustment TXFSoftware Adjustment Parts List Main UnitVariable Thermistor NTCCM20124AG473J-T Tantalum ECST0JY106R Chassis Unit Accessories Mechanical Parts and DisassemblyChassis Parts IC-F3GS parts Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Board Layouts General and EIA/TIA Versions Except W/N-TYPEMP6 Main Unit Bottom ViewIC1 ETS/CEPT VersionMP5 VHF FI1 Parts List Disassembly InformationBC-137 Optional Desktop Charger Informasion ConvenientVoltage Diagram Board LayoutBlock Diagram Option UnitVoltage Diagram BU4066BCFVBand of ETS/CEPT version N-type DTA144EU Section Voltage Diagram Avref Vtref Toned Tonem AvccPage 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan UHF FM Transceivers IC-F4GTIC-F4GS Preparation PLL Adjustment Software Adjustment Power supply requirement APC IC3A NJM3403AV Disassembly and Option Instructions Optional Unit Installations 2ND if and Demodulator Circuits RF signal From PLL Driver PLL Circuit Power Supply Circuits Voltage Line Resistor R132PTT Adjustment Procedures Screen Display Example DC Power Cable Connections L405 L11 Powerlo BPF T1 NJM3403AV-TE1 IC4 Resistor ERJ2GE Thermistor NTCCM1608 4LH 223KC Ceramic ECUE1H470JCQ ECEV1CA470SP Other Ceramic ECJ0EB1E471K Band MHz band MHz and H-band IC-F4GS parts DTA144 EU DTC144 EE DTC144 EU DTC144 TU LOW Band DS1FI1 440-470 MHz Band Except W/N-TYPE Icom 470-500 MHz and High Bands B5542B C308 Q19 B5688B BC-137 Optional Desktop Charger Informasion Voltage Diagram Type Type of GEN Type of GEN and EIA/TIA version NJM3403AV M1-band of GEN and EIA/TIA version G W-type of GEN Type 2SC3585 R44 Q403 2SC5107 O Band of ETS/CEPT version N-type M1 440-470 MHz-band Page 13713IZ-C1U
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