Icom AT-130 Bedienungsanleitung

HF AUTOMATIC ANTENNA TUNER

AT-130

AT-130E

AT-140

SERVICE

MANUAL

MODEL

AT-130

AT-130E

AT-140

SYMBOL

USA

USA-1

USA-2

EUR

EUR-1

USA-3

VERSION

U.S.A.

U.S.A.-1

U.S.A.-2

Europe

Europe-1

U.S.A.-3

INTRODUCTION

This service manual describes the latest service information

for the AT-130/AT-130E/AT-140 HF AUTOMATIC ANTENNA

TUNER at the time of publication.

DANGER

NEVER connect the antenna tuner to anAC outlet or to a DC

power supply that uses more than 16 V. This will ruin the

antenna tuner.

DO NOT expose the antenna tuner to rain, snow or any liq-

uids.

DO NOT reverse the polarities of the power supply when

connecting the antenna tuner.

ORDERING PARTS

Be sure to include the following four points when ordering

replacement parts:

1. 10-digit order numbers

2. Component part number and name

3. Equipment model name and unit name

4. Quantity required

1140003000 IC

µPD78212CW

AT-130 TUNER UNIT 5 pieces

8810000660 Screw PH M4×12 SUS AT-130 Top case 10 pieces

Addresses are provided on the inside back cover for your

convenience.

REPAIR NOTES

1. Make sure a problem is internal before disassembling the

antenna tuner.

2. DO NOT open the antenna tuner until the antenna tuner

is disconnected from its power source.

3. DO NOT force any of the variable components. Turn

them slowly and smoothly.

4. DO NOT short any circuits or electronic parts. An insu-

lated tuning tool MUST be used for all adjustments.

5. DO NOT keep power ON for a long time when the anten-

na tuner is defective.

6. READ the instructions of test equipment thoroughly

before connecting equipment to the antenna tuner.

To upgrade quality, any electrical or mechanical parts and

internal circuits are subject to change without notice or

obligation.

Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom,

Germany, France, Spain, Russia and/or other countries.

TABLE OF CONTENTS

SECTION 1 SPECIFICATIONS

SECTION 2 INSIDE VIEW

SECTION 3 CIRCUIT DESCRIPTION

SECTION 4 ADJUSTMENT PROCEDURES

SECTION 5 PARTS LIST

SECTION 6 MECHANICAL PARTS

SECTION 7 SEMI-CONDUCTOR INFORMATION

SECTION 8 BOARD LAYOUTS

8 - 1 TUNER UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1

8 - 2 MANUAL UNIT (AT-130E ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 2

SECTION 9 BLOCK DIAGRAM

SECTION 10 VOLTAGE DIAGRAM

1 - 1

SECTION 1 SPECIFICATIONS

‘‘GENERAL

• Number of memory channels : 45

• Frequency range : 1.6 MHz to 30 MHz with a 7 m (23 ft) or longer antenna element

• Maximum input power : 150 W PEP

100 W continuous

• Input impedance : 50 Ω

• Minimum operating input power : 5 to 15 W

• Automatic tuning time :

(General) Approx. 2 to 3 sec. (max. 15 sec.)

(Returning to a memorized frequency) Approx. 1 sec.

• Tuning accuracy (VSWR) : Less than 2.0 : 1

(after tuning; except for multiples of 1⁄2 λ)

•Antenna required : Marconi-type with suitable RF ground

(More than 7 m (23 ft) is suggested)

•Power supply required : DC 13.6 V ± 15 % (supplied from HF transceiver)

•Current drain : Less than 2 A

•Usable temperature range : –30˚C to +60˚C; –22˚F to +140˚F

•Dimensions (projections not included) : 230(W) ×80(H) ×340(D) mm

93⁄32(W) ×33⁄32(H) ×1313⁄32(D) in

•Case construction : Weatherproof

•Weight :

(AT-130/AT-140) Approx. 2.5 kg; 5 lb 8 oz

(AT-130E) Approx. 2.7 kg; 6 lb

•Control cable : OPC-420 (For [IC-77/78])

OPC-566 (For [IC-M700PRO], [IC-M710/RT])

OPC-1147 (For [IC-M802])

OPC-1186 (For [IC-F7000])

All stated specifications are subject to change without notice or obligation.

2 - 1

SECTION 2 INSIDE VIEW

+5V regulator

(IC8:TA7805S)

Comparator

(IC10:TA75393S)

Mounting plate

Antenna cable receptacle

Dip switch

(SW3: SSGM18049A)

Dip switch

(SW4: SSGM17012A)

Dip switch

(SW5: SSGM18049A)

LED's

(DS1-DS23: EL204HD)

Antenna terminal

Mode switch

(SW1: MS621C)

Control cable

receptacle

CPU

(IC1: mPD78212CW-613)

Ground terminal

Water drain screw

+5V regulator

(IC8:TA7805S)

Comparator

(IC10:TA75393S)

Mounting plate

Antenna cable receptacle

Dip switch

(SW3: SSGM18049A)

Dip switch

(SW4: SSGM17012A)

Dip switch

(SW5: SSGM18049A)

LED's

(DS1-DS23: EL204HD)

Antenna terminal

Mode switch

(SW1: MS621C)

Control cable

receptacle

CPU

(IC1: µPD78212CW-613)

Ground terminal

Water drain screw

Photo:AT-140

3 - 1

SECTION 3 CIRCUIT DESCRIPTION

3-1 GENERAL

An 8-bit microprocessor controls the AT-130/AT-130E/AT-

140. The tuner matches the antenna system to the trans-

ceiver by using four kinds of detector circuits. These circuits

are:

(1) FORWARD POWER DETECTOR

(2) SWR DETECTOR

(3) PHASE DETECTOR

(4) IMPEDANCE DETECTOR

Detailed descriptions of each circuit as follows.

• GENERAL

3-2 FORWARD (FWD) POWER DETECTOR

CIRCUIT

This circuit ensures the input power from the transceiver is

low enough to be handled by the attenuator within the tuner.

In the TUNER UNIT, L1 and D1 detects the RF input current.

C2 and C3 divide the detected voltage and feed it to IC10a.

3-3 SWR DETECTOR CIRCUIT

The reflected power from the antenna system provides a

detection voltage.

The voltage doubler, consisting of D13 and D14, rectifies

this voltage and passes through the voltage divider formed

by R36 and R37.

These SWR data from voltage divider feed into IC1, The

CPU. The CPU controls the setting of the coils and capaci-

tors in the matching network.

•FORWARD POWER DETECTOR CIRCUIT •SWR DETECTOR CIRCUIT

3 - 2

3-4 PHASE DETECTOR CIRCUIT

This circuit consists of L2, L3 and IC9. The phase detector’s

purpose is to detect reactance components and provide a

pure resistance.

The output of IC9 is a reference voltage of approximately

4 V when the load of L3 is a pure resistance with no reac-

tance. An inductive load produces an output voltage from

IC9 which is lower than the reference voltage, whereas, a

capacitive load produces an output voltage higher than the

reference voltage. IC10a amplifies the output voltage and

passes it to comparator IC10a.

3-5 IMPEDANCE DETECTOR CIRCUIT

The tuner uses an attenuator to reduce the transmit power

to a very low level. The low power minimizes the risk of inter-

ference to other stations while matching an antenna to the

transmitter.

The VSWR at the input terminal is usually close to 1:1 even

with a large change of impedance at the attenuator output

due to the 16 dB of isolation between the input and the

matching network.

The circuit uses the constant voltage at D7 and D8 on The

TUNER unit as a reference. If the impedance of the attenu-

ator output is higher than 50 Ω, the detected voltage by D11

and D12 is HIGH. If the impedance is lower than 50 Ω, the

voltage is LOW. Both the reference and detected voltages

feed to comparator IC10b.

3-6 LOGIC CIRCUIT

IC1, The CPU, controls the antenna matching network. The

CPU receives +5V through IC8 when DC power is applied to

the tuner. This voltage initializes the CPU. The stored pro-

gram in the Read Only Memory (ROM) IC12 sets each relay

to the initial condition.

The tuning program begins only if the START line is at LOW

level. RL1 and RL2 activate when RF power at the input

antenna connector from the transceiver is present at an

appropriate level (See Section 6-2).

The data from the previously described detectors (input RF

power, reflected RF power, phase difference, impedance dif-

ference) feed into the CPU. The coil data then passes to

IC4, the capacitor data to IC3 and the control data to IC2

according to the tuning program.

3-8 ANTENNA CURRENT DETECTOR CIRCUIT

(MANUAL UNIT —Europe version only)

On the MANUAL UNIT, L319 detects the antenna current.

D305 rectifies the detected voltage and feed it to J301

through low-pass filter comprising R305, C305 and C306.

•PHASE DETECTOR CIRCUIT

•IMPEDANCE DETECTOR CIRCUIT

•ANTENNA CURRENT DETECTOR CIRCUIT

4 - 1

SECTION 4 ADJUSTMENT PROCEDURES

DC power supply

Icom

Transceiver

Antenna connector

Tuner receptacle (Refer to below)

[E]

[ANTC]

[13.6]

[GND]

[STAR]

[KEY]

J9 OPC-566

AT-130/E

AT-140

[E]

[ANTC]

[13.6]

[GND]

[STAR]

[KEY]

OPC-420

11. *E or ANTC

2. 13.6 V

9. START

10. KEY

1234

[E]

[ANTC]

[13.6]

[GND]

[STAR]

[KEY]

OPC-1147

1. KEY

2. START

3. 13.6 V

4. *E or ANTC

1. KEY

2. START

3. 13.6 V

4. *E or ANTC

*Depened on versions

123456

[E]

[ANTC]

[13.6]

[GND]

[STAR]

[KEY]

OPC-1186

11. *E or ANTC

2. 13.6 V

9. START

10. KEY

12345678910

•CONNECTION

4-1 PREPARATION

■REQUIRED TEST EQUIPMENT

EQUIPMENT

DC power supply

Oscilloscope

Transceiver

GRADE AND RANGE

Output voltage : Depended on connecting transceiver (Ex; 13.8 V DC)

Current capacity : Depended on connecting transceiver (Ex; 30 A or more)

Frequency range : DC–20 MHz

Measuring range : 0.01–10 V

: Icom transceiver

4 - 2

4-2 ANTENNA TUNER ADJUSTMENTS

PHASE

DETECTOR

CIRCUIT

IMPEDANCE

DETECTOR

CIRCUIT

FORWARD

DETECTOR

CIRCUIT

SWR

DETECTOR

CIRCUIT

ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINT

UNIT LOCATION UNIT ADJUST

•S1 : PRESET

•S4-7 : OFF

•Short pins of J13.

•Disconnect P6 from J6.

•Ground J15 with a jumper wire.

•TRANSCEIVER

Display freq. : 1.6 MHz

Output power : 10 W

(carrer only)

Transmitting

•Same as above

Connect an oscillo-

scope to the check

point pin 2 of J8.

Connect an oscillo-

scope to check

point pin 3 of J8.

Connect an oscillo-

scope to check

point pin 1 of J8.

Connect an oscillo-

scope to check

point pin 4 of J8.

5 V (Tune R194 just

before droped.)

5 V (Tune C7 just

before drope.)

1.4 –2.4 V

0 –0.1 V

R56

Verify

TUNER

NOTE: •After adjustment, remove the jumper wires from J15 and ground.

•After adjustment, Disconnect pins of J13.

•After adjustment, reconnect P6 to J6 and set S1 to [NORMAL] position.

PRESET

NORMAL

OFF

J13

J15

R194

Impedance detector

adjustment

Phase detector

adjustment

LED's

[TUNER UNIT][TUNER UNIT]

IC1 1140003000 IC µPD78212CW-613 T

IC2 1130006930 IC TC74HC574AP T

IC3 1130006930 IC TC74HC574AP T

IC4 1130006930 IC TC74HC574AP T

IC5 1130005200 IC TC74HC393AP T

IC6 1130000050 IC TC4013BP T

IC7 1110005750 IC S-80841CLY-B T

IC8 1110002020 IC TA7805S T

IC10 1110000060 IC TA75393S T

IC11 1160000100 IC µPA2004C T

IC12 1160000100 IC µPA2004C T

IC13 1160000100 IC µPA2004C T

IC14 1160000100 IC µPA2004C T

Q1 1560000110 FET 2SK241-GR T

Q2 1530000150 TRANSISTOR 2SC2668-O T

Q3 1590000350 TRANSISTOR RN1204 T

Q4 1530000110 TRANSISTOR 2SC2458-GR T

Q5 1530000110 TRANSISTOR 2SC2458-GR T

Q7 1510000080 TRANSISTOR 2SA1048-GR T

Q8 1530000110 TRANSISTOR 2SC2458-GR T

Q9 1590000350 TRANSISTOR RN1204 T

Q10 1530000110 TRANSISTOR 2SC2458-GR T

Q11 1530000110 TRANSISTOR 2SC2458-GR T

D1 1710000021 DIODE 1N60 <AMI> T

D2 1710000580 DIODE 1SS265 T

D3 1710000580 DIODE 1SS265 T

D4 1710000160 DIODE 1SS133 T

D5 1710000021 DIODE 1N60 <AMI> T

D6 1710000021 DIODE 1N60 <AMI> T

D7 1710000021 DIODE 1N60 <AMI> T

D8 1710000021 DIODE 1N60 <AMI> T

D9 1710000160 DIODE 1SS133 T

D10 1710000160 DIODE 1SS133 T

D11 1710000021 DIODE 1N60 <AMI> T

D12 1710000021 DIODE 1N60 <AMI> T

D13 1710000021 DIODE 1N60 <AMI> T

D14 1710000021 DIODE 1N60 <AMI> T

D15 1710000160 DIODE 1SS133 T

D16 1710000060 DIODE 1SS55-T4 T

D17 1710000060 DIODE 1SS55-T4 T

D18 1710000350 DIODE 1N4002 T

D19 1710000350 DIODE 1N4002 T

D20 1710000350 DIODE 1N4002 T

D21 1710000160 DIODE 1SS133 T

D22 1710000160 DIODE 1SS133 T

D24 1710000040 DIODE 1S953 T

D25 1730000170 ZENER RD8.2E B1 T

D26 1710000040 DIODE 1S953 T

D29 1710000160 DIODE 1SS133 T

D30 1710000160 DIODE 1SS133 T

D31 1710000160 DIODE 1SS133 T

D32 1710000160 DIODE 1SS133 T

D33 1710000160 DIODE 1SS133 T

D34 1710000160 DIODE 1SS133 T

D35 1710000160 DIODE 1SS133 T

D36 1710000160 DIODE 1SS133 T

D37 1710000160 DIODE 1SS133 T

D38 1710000160 DIODE 1SS133 T

D39 1710000160 DIODE 1SS133 T

D40 1710000160 DIODE 1SS133 T

D41 1710000160 DIODE 1SS133 T

D42 1710000160 DIODE 1SS133 T

D43 1710000160 DIODE 1SS133 T

D44 1710000160 DIODE 1SS133 T

D45 1710000160 DIODE 1SS133 T

D46 1710000160 DIODE 1SS133 T

D47 1710000160 DIODE 1SS133 T

D48 1710000160 DIODE 1SS133 T

D49 1710000160 DIODE 1SS133 T

D50 1710000160 DIODE 1SS133 T

D51 1710000160 DIODE 1SS133 T

D52 1710000060 DIODE 1SS55-T4 T

D53 1710000060 DIODE 1SS55-T4 T

D54 1710000060 DIODE 1SS55-T4 T

D55 1710000060 DIODE 1SS55-T4 T

D56 1710000060 DIODE 1SS55-T4 T

S.=Surface mount

D57 1710000060 DIODE 1SS55-T4 T

D58 1710000060 DIODE 1SS55-T4 T

D59 1710000060 DIODE 1SS55-T4 T

D60 1710000060 DIODE 1SS55-T4 T

D61 1710000060 DIODE 1SS55-T4 T

D62 1710000060 DIODE 1SS55-T4 T

D63 1710000060 DIODE 1SS55-T4 T

D64 1710000060 DIODE 1SS55-T4 T

D65 1710000060 DIODE 1SS55-T4 T

D66 1710000060 DIODE 1SS55-T4 T

D67 1710000060 DIODE 1SS55-T4 T

D68 1710000060 DIODE 1SS55-T4 T

D69 1710000060 DIODE 1SS55-T4 T

D70 1710000060 DIODE 1SS55-T4 T

D71 1710000060 DIODE 1SS55-T4 T

D72 1710000060 DIODE 1SS55-T4 T

D73 1710000060 DIODE 1SS55-T4 T

D74 1710000060 DIODE 1SS55-T4 T

D75 1710000060 DIODE 1SS55-T4 T

D76 1710000060 DIODE 1SS55-T4 T

D77 1790001780 DIODE MA700 T

D78 1710000160 DIODE 1SS133 T

D79 1710000160 DIODE 1SS133 T

D80 1790001780 DIODE MA700 T

D81 1790001780 DIODE MA700 T

D82 1790001780 DIODE MA700 T

D83 1790001780 DIODE MA700 T

D84 1790001780 DIODE MA700 T

X1 6050006930 XTAL RF-4A3 FAT NKD (9.8304 MHz) T

L1 6140000100 COIL LR-22A T

L2 6140000930 COIL LR-116 T

L3 6140000930 COIL LR-116 T

L4 6140000070 COIL LR-19 T

L5 6180003300 COIL T6-222J (2.2M) T

L6 6110002750 COIL LA-459 T

L7 6110002760 COIL LA-460 T

L8 6110002770 COIL LA-461 T

L9 6110002780 COIL LA-462 T

L10 6110002790 COIL LA-463 T

L11 6110002800 COIL LA-464 T

L12 6110002810 COIL LA-465 T

L13 6110002820 COIL LA-466 T

L14 6110002830 COIL LA-467 T

L15 6110002840 COIL LA-468 T

L16 6110002850 COIL LA-469 T

L17 6110002860 COIL LA-470 T

L18 6180000900 COIL LAL 03NA 101K T

L19 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62)

[AT-130E] only T

L20 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L22 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L23 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L24 6180000900 COIL LAL 03NA 101K T

L25 6180000900 COIL LAL 03NA 101K T

L26 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L27 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L28 6180000900 COIL LAL 03NA 101K T

L29 6180000900 COIL LAL 03NA 101K T

L30 6910000670 COIL BL01RN1A1D2B (BL01RN1-A62) T

L31 6180001220 COIL LAL 04NA 100K T

L32 6180000880 COIL LAL 03NA 100K T

L33 6180002270 COIL LAL 03NA 470K T

R1 7010004190 RESISTOR R20J 1 kΩT

R2 7010004670 RESISTOR R50XJ 22 ΩT

R3 7010004670 RESISTOR R50XJ 22 ΩT

R4 7010003340 RESISTOR ELR20J 330 ΩT

R5 7010003740 RESISTOR ELR20J 470 kΩT

R6 7010003240 RESISTOR ELR20J 47 ΩT

R8 7010004320 RESISTOR R20J 10 kΩT

R9 7010004230 RESISTOR R20J 2.2 kΩT

R10 7010004410 RESISTOR R20J 47 kΩT

R11 7010003440 RESISTOR ELR20J 2.2 kΩT

R12 7010003480 RESISTOR ELR20J 4.7 kΩT

R13 7010000290 RESISTOR ELR25J 220 ΩT

5 - 1

SECTION 5 PARTS LIST

REF ORDER DESCRIPTION M.

NO. NO. REF ORDER DESCRIPTION M.

NO. NO.

M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)

Andere Handbücher für AT-130

Dieses Handbuch passt für folgende Modelle

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