m830-00-202 a3 pages

IPN 220-01390-02M830-00 T837 PCB Information C6.3.17

Copyright TEL 31/03/01

T837 PCB Layout - Top Side220-01390-02

A LB DC E J NK MHGF P Q

1

2

3

4

5

6

7

8

9

&C269

%C

294

%C295

%C

707

&R264

&R265

&R266

%R

298

=R705

=SK710

C201 C202

C204

C205

C20

7

C209

C21

0

C211

C213

C21

5

C217

C21

9

C225

C227

C229

C23

0

C232

C23

3

C23

5

C237

C239

C241

C24

2

C24

3

C24

5

C259

C260

C261C263

C265

C267

C271C273

C27

5

C27

7

C27

9

C28

1

C283

C28

5

C287

C289

C291

C29

3

C330B

C37

3

C38

5

C503

C505

C51

0C51

3 C53

5

C550

C60

5

C61

0A

C61

0B

C61

1A

C61

1B

C623C625C62

6

C62

8

C630

C63

1A

C63

4

C636

C63

8

C64

0

C65

5

C66

0 C665

C67

0

C673

C677

C681

C68

4

C687

C69

0

C693

C700

C70

3

C705

C70

6

C708

C70

9

C710

C712

C72

0C

722

C72

4C

725 C72

6

C727

C72

9

C73

5

C73

6

C740AC74

0B

C741AC74

1B

C74

2A

C742B

C74

3

C74

5

C75

7C

759

C76

1

C762

C76

4

C76

5

C76

7

C76

9C

770

C772

C77

4C

776

C78

2C78

4

C786

C788

C79

0

C79

2

C810

C812

C813

C822

C82

3C

824

C82

6

C82

7

C82

8

C83

0

C838

C841

C84

4

C910

C920

C930

D111D22

0

D230

D260

D270

D610

D62

0

D63

0D

635

D64

0

D71

0

D72

0

D73

0D740

D810

IC21

0

IC220

IC23

0IC260

IC330

IC61

0

IC63

0

IC64

0

IC65

0

IC71

0IC

720

IC73

0

IC740

IC750

IC820

IC830

L335

L345

L350

L360

L365

L375

L385

L750

P100

P150

P160

P170

P204

P208

P210

P211

P212

P219

P225

P230

P231

P233P235

P237 P239

P240

P243

P244

P245P247

P248

P249

P251

P255

P257

P259

P261

P263

P265

P267

P269

P271 P273

P275

P750

P805

P810

P820

P825

P830

P835P840

PL1

00

Q21

0

Q22

0

Q230

Q24

0

Q250

Q31

5

Q36

5

Q370

Q510

Q520

Q53

0

Q540

Q55

0

Q61

0

Q620

Q63

0

Q66

0

Q670

Q71

0Q

720

Q73

0Q

740

Q750

Q760

Q77

0

Q77

5Q

780

Q785

Q790

Q795

Q810Q82

0

Q830 Q840 Q850

Q86

0

R16

0

R20

1

R20

2

R204R

205

R206

R207

R20

8 R20

9

R21

0

R21

6

R217

R218

R219

R22

1

R223

R22

4

R22

5R

226

R227

R22

9

R230

R231 R232

R23

3R23

5

R23

7R

238

R239

R24

1

R242

R24

4

R253

R254

R255

R25

6

R25

7

R258

R25

9

R260

R26

2

R263

R267

R26

8

R26

9

R270

R27

1

R27

2

R27

3

R27

4

R27

5

R27

7

R27

8

R279

R28

0

R28

2

R283

R28

4

R285

R286

R28

7

R288

R289

R290

R291 R292

R29

3

R29

4

R295

R29

6R

297

R299

R35

9R

360

R36

2R

378

R38

0R

382

R38

8

R39

0R

392

R39

4R

396

R502

R505

R510

R515

R52

0

R52

5

R53

0

R53

5

R54

0

R54

5

R55

0

R555

R560

R60

9

R61

3

R615

R61

7

R625

R63

3

R637

R64

1R

645

R64

9

R65

3

R657

R66

1

R665

R66

9R

673

R67

7

R681

R685

R68

9R

693

R69

6

R70

1

R70

2

R70

3

R706

R70

8R

710

R711

R712

R71

3

R717

R718R719

R72

0

R72

1

R722

R72

3

R72

5

R727

R72

8

R742

R74

3

R74

4

R74

6 R747

R74

8

R74

9

R750

R75

2

R753

R75

4

R75

6

R75

7

R75

8

R75

9

R76

0

R762

R763

R76

5R76

6

R76

7

R769

R771

R77

2

R774 R77

5

R777

R78

4

R78

5

R78

6

R787

R790

R791

R79

2

R80

1

R80

2

R80

8

R809R810 R811

R81

2

R81

3

R81

5R

816

R81

8

R81

9

R82

1

R82

2

R824

R825

R826

R827

R828R829

R830

R831

R832

R833

R835

R836

R837

R840

R841

R842

R843

R84

5

R846

R847

R84

8

R84

9

R85

0

R85

3

R85

4

R85

5

R85

9

R86

1

R863

R86

5

R86

7

R871

R87

2

R87

3R

874

R87

5R

876

R87

7

R87

9

RV220

RV805

SK

310

SK420

T610

T837- T83710

T83713

T83715

T83720

T83723

T83725

T837_

TOPFIDA

TOPFIDB

TOPHOLE TOPSLOT


1

2

3

4

5

6

7

8

9

SW230

RV210

SK205

T210

%D

205

%D

210

Q270

IC250

C221C22

3

C247

C249

C251

C25

3

C25

5

C257

D24

0

D250

IC240P215

P217

PL2

05P

L210

PL2

20

Q260

R21

2

R21

3 R214

R215

R245

R24

7

R248

R24

9

R25

1

ABCDEFGHIJKLMN

SID

COMPRESSIONLEVEL

LINE SENSITIVITY

CARRIER SWITCH

MIC/PRESSEL

L340

TP206 TP308

SL320

L370 L355

L390 L3

80

SK501

SK502

SK503

SK504

SK505

SK522

SK513

SK531

SK532

SK533

SK534

SK535

=IC700

C750TP710

%C733

%R

726

%C713

TP715

SK

80

5

SK810

SL8

10

TP607

TP603

TP604

TP602

R619

TP601

R629

R621

PL2

15

T837

T837EXCITER220-01390-02

%R

715

DR

AN

GE

AU

X

CTC

SS

LE

VE

L A

DJU

ST

%R

150

L910

L920

The darker shading shows the outline of the chassis.

IC810

%R150 (10Ω) is fitted only when the T837 is used in a Series I rack frame (refer to Part I for full details).

%D210 and %D205 are shown incorrectly on the PCB encoding as #D210 and #D205.

IPN 220-01390-02C6.3.18 T837 PCB Information M830-00

31/03/01 Copyright TEL

T837 PCB Layout - Bottom Side220-01390-02

E CD BK AP LMN J H G FQ

1

2

3

4

5

6

7

8

9

B837-

B83710

B83713

B83715

B83720

B83723

B83725

B837_

BOTFIDA

BOTFIDB

BOTHOLEBOTSLOT

C304

C308

C312

C316

C317

C318

C320

C324

C330A

C332

C334

C336

C338

C340

C342

C344

C346

C349

C350

C353

C356

C359

C362

C365

C368

C370

C376

C379

C382

C388

C391

C394

C396

C399

D340D350 D360

Q305

Q310

Q320

Q325

Q330

Q335

Q340

Q345

R302

R304

R306

R308

R310

R312

R314

R316

R318

R320

R322

R324

R326R

328

R330

R332

R334

R336

R338

R340

R342

R344

R346

R348

R350

R352

R354

R356

R364

R366

R368

R370

R372

R374

R376

R384

R386

SL201

SL202

SL203

SL204

E CD BK AP LMN J H G FQ

1

2

3

4

5

6

7

8

9

B837

TP305

220-01390-02T837EXCITER

SL501

The darker shading shows the footprint of the bottom cover.



T837 Test Points & Options Connections220-01390-02 (Top & Bottom Side Shown)


1

2

3

4

5

6

7

8

9

=R705

=SK710

P160

P170

P204

P208

P210

P211

P212

P219

P225

P230

P231

P233P235

P237 P239

P240

P243

P244

P245P247

P248

P249

P251

P255

P259

P261

P263

P265

P267

P269

P271 P273

P275

P805

P810

P820

P825

P830

P835P840RV220

RV805


1

2

3

4

5

6

7

8

9

P215

P217

PL2

05P

L210

PL2

20

ABCDEFGHIJKLMN =IC700

SK

805

%D

205

%D

210

P750

TP308TP206

PL2

15

LEVEL

TP710

TP715

AUX

CTCSS

TP603

220-01390-02 T837EXCITER

TP602+9V

TP601+13V8

TP604

+20V

+5V

TP607+5VDIG

LEVELADJUST

SERIAL-C0M-1

AUX-PTT

AO6

AO7

AO5AO4

SL810

LOCKED-LOW

MICRO-BYPASS

FAST-KEY-OPTIONSL501

P150

AUDIO-1

AUDIO-2

12.8MHz

MOD-SENSE

TX-REG/LOCK-DETECT

TP305

TX-REG

SL320

FAST_KEY_OPTIONS/A

BOTTOM COPPERSOLDER LINK ON

GND

LINE_I-P-2

LINE-I-P-3

OPTO-KEY-

P257

AUDIO-1

CTCSSLINE LIMITEROPTION

TX-ENB-OPT

+9V

+4V1

FLEXR SDA

E-P SCK

AUDIO-2

+9V

+9V

RELAY

RELAY

TX-REG

SUPPLY-LED

LED-AN

LED-GND

TX-LED

POCR

+9V

LPF-OUT

POCI

+4V1

BUF-IN

D-RANGE

AO3

SERIAL-COM

OPTO-KEY+

COMPRESSION

CTCSS

GND

GND

The darker shading shows the outline of the chassis.

%D210 and %D205 are shown incorrectly on the PCB encoding as #D210 and #D205.



Sheet 1 - T837 Exciter Overview220-01390-02

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

A B C D E F G H J K L M N P Q R

REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWNNO.SHEETS:FILE NAME:

TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.

2.SC.PROJECT: DESIGNER:

1

10

T837EX

139002A

220-01390-02

2-6-97

2A

T837 DAVES

0A ORIGINAL DAVES 1A D-RUN-UPDATE DAVES 2A 7094,7129,0000,7130 DAVES

D111SR2607

SK420SIDE ENTRY COAX SKT

PL10015 WAY R-ANGLE DRANGE PLUG

P100

I/OPAD

AUDIO

SHEET 2

VCO-MOD

AUDIO-2

CTCSS

REF-MOD

CTCSSM

OPTO-KEY+

OPTO-KEY-

TX-ENABLE

E-P

SDA

SCK

LED

LINE-I-P-1

LINE-I-P-4

LINE-I-P-3

LINE-I-P-2

TX-RELAY-DRV

AUDIO-1

EXCITERSHEET 3

LOCK-DETECT

VCO-O-P

SHEET 4

PA

P150

SERIAL-COM

I/OPAD

P170

AUDIO-2

I/OPAD

P160AUDIO-1

I/OPAD%R15010

R16010

SECTIONVCO

SHEET 5

DIV

-BU

FFE

R

CN

TRL-

VO

LT

VCO-MODREGULATOR

SHEET 6

TX-C

ON

T

TX-ENABLE

TX-KEY

TX-E

NB

RE

SE

T

WA

TCH

DO

G

NO

T-R

ES

ET

SYNTHSHEET 7

MCU-CLOCK

SDA

SCK

SYNTH

REF-MOD

LOCK-DETECT

MICROSHEET 8SYNTH

MCU-CLOCK

SCK

E-P

CTCSSM

LED

SERIAL-COM

SDA

TX-RELAY-DRV

HARMONIC-FILTER

SHEET 9

ANTENNASKT

OUT-OF-CIRCUIT-DATA

SHEET 10

PL100GND14

PL100GND15

PL100+13V89

PL100+13V810

PL100SERIAL-COM

7

PL100TX-ENABLE

5

PL100TX-KEY13

PL100AUDIO-2

6PL100

OPTO-KEY-

12

PL100OPTO-KEY+

11

PL100LINE-I/P-4

4

PL100LINE-I/P-3

3

PL100LINE-I/P-2

2

PL100LINE-I/P-1

1

PL100CTCSS

8

+9V +5V +13V8 +9V TX-REG

+20V +9V +5V +9V

+20V +13V8 +9V +5V TX-REG

TX-REG

+5VDIG

+5VDIG

+9V TX-REG

+13V8

PROCESSOR

SHEET 4 IS EMPTY - SOCKET IN PA AREA IS SHOWN ON SHEET 1

DRANGE

PL100

7

6

5

13

12

11

8

4

3

2

1

10

9

14

15

DGND & GND ARE JOINED

THROUGH R617 ON SHEET 6

COAX-FROMEXCITER(SK310)TOPA(SK420)

VCO-MOD

REF-MOD

TX-RELAY-DRV

LED

E-P

CTCSSM

SDA

SCK

VC

O-M

OD

RE

F-M

OD

SD

A

SC

K

CTCSSM

E-P

LED

TX-RELAY-DRV

AUDIO-1

AUDIO-2

TX-ENABLE

AUDIO-2

AUDIO-1

TX-ENABLE

OPTO-KEY-

OPTO-KEY+

CTCSS

LINE-I-P-4

LINE-I-P-3

LINE-I-P-2

LINE-I-P-1

LINE-I-P-1

LINE-I-P-2

LINE-I-P-3

LINE-I-P-4

CTCSS

OPTO-KEY+

OPTO-KEY-

This sheet shows how the T837 circuitry is divided into separate sections which are contained within separate cavities in the chassis. It is laid out to show the approximate location of each section of circuitry on the PCB. The circuitry for each section is shown on separate numbered sheets, and all components on the PCB are numbered to match the sheet on which they appear. For example, all audio components appear on sheet 2 and are numbered between 200 & 299, all exciter components are on sheet 3 and are numbered between 300 & 399, and so on.



Sheet 2 - T837 Audio Processor220-01390-02

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9



TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


2

10

T837EXAUDIO PROCESSOR

139002A

220-01390-02

2-6-97

2A

T837 DAVES


%D2051N4531

%D2101N4531

C2044U7 BP

C2054U7 BP

C2014U7 BP

C2024U7 BP

IC2404053BD

INH6

A11

B10

C9

X012

X113

Y02

Y11

Z05

Z13

GND8

VREF7

+V16

Z4

X14

Y15

R201560

R202

1K0

+

-

IC210LM324D

10

9

8

%R298 100K

IC220DS1267

MAX12

MIN11

WIPER 13

R296

1K0

R257

330K

+

-

IC260LM324D

12

13

14

R256

47K

CW

RV210

10K LOG 2 3

1

C211100N

SK205STEREO SKT

1

32

SW230

SPDT

32

1

R268

100

R26910K

R270470

IC2504N25A

462

51

BAW56

D2603 1

BAW56

D26032

R271390K

C275120P

BAW56D250

3

1

C2551N0

BAW56

D24031

BAW56D250

3

2

BAW56D240

3

2

C2491N0

C2531N0

C25747P

R248

100K

R249100K

R24410K

R24710K

C2511N0

R245

100K

TAN

T

C21

310

U

R208

560

IC220DS1267

GND8

VB1

NC2

NC15

+V16

RST6

DQ9

CLK7

COUT10

SOUT14

R205

220

+

-

IC210LM324D

3

2

1

R204

2K2

TANT

C2074U7

C209

47N

P237AUDIO-2

I/OPAD

P245

TX-REG

I/OPAD

C2191N0

R2102K2

R20910K

C2172N2

R207

3K9

R206

1K0

TANT

C21522U

C223

100N R214

8K2 TANT

C22122U

R215

100K

R212

100K

R21310K

R251100K

R272560

C277

10N

+

-

IC230LM324D

12

13

14

R27312K

C279

1N0

R274

15K

R2752K7

C28122N

R277100K

+

-

IC230LM324D

3

2

1

R278120K

C283

4P7

R279

1M0

R28010K

R282

56K

+

-

IC210LM324D

12

13

14

R28356K

C285

4P7

R284

1M0

R2862K2

C287100U

R28815K

IC220DS1267

MAX3

MIN4

WIPER5

P247

TX-LED

I/OPAD

P249RELAY

I/OPAD

P251RELAY

I/OPAD

R239

680

R2414K7

D230

33V

R2422K2

P259

GND

I/OPAD

P261GND

I/OPAD

P263GND

I/OPAD

C225

100N

R216

100K

C227100N

R223

1M0

C2351N0

+

-

IC230LM324D

10

9

8

R224

6K8

C2371U0

R225

1M0

R22610K

R227

2K2

C239

4U7 BP

C241

100N

R23110K

TANT

C24210U

R232330K

R233

100K

+

-IC230LM324D

5

6

7

R230

100K

CWRV22047K

2

3

1

R229470K

C229150P

R218150K C232

150P

R2171K0

C23347U

R219

2K2

R2352K2

C2431N0

C25947N

R253100K TANT

C2614U7

+

-

IC210LM324D

5

6

7

R254100K

R25510K

%C295 470N

R287

10K

R2910

C28947N

R2992K7

C293

1U0

R297

5K6

TANT

C29122U

R290560

R293

47K

R294

4K7

+

-

IC260LM324D

10

9

8

R2952K7

R292

4K7

+

-

IC260LM324D

3

2

1

R2672K2

&R266

56K

&R265

18K

&C2694P7

C2674N7

C27147P

&R264

27K

+

-

IC260LM324D

5

6

7

R262

47K

R26047K

R258

150K R259

22K

C265

4U7 BP

R263

4K7

C273

47N

C245150P

C247150P

P255CTCSS

I/OPAD

P271BUF-IN

I/OPAD

P269+4V1

I/OPAD

IC230LM324D

V-11

V+4

IC210LM324D

V-11

V+4

IC260LM324D

V-11

V+4

R237

47K

R238

47K

P244 I/OPAD

P243SUPPLY-LED

I/OPAD

P239+9V

I/OPAD

R221

680

P240+9V

I/OPAD

C230100N

C210100N

C260100N

P233AUDIO-1

I/OPAD

P235AUDIO1

I/OPAD

P204LINE-I-P-3

I/OPAD

P208LINE-I-P-2

I/OPAD

P215TX-ENB-OPT

I/OPAD

P219OPTO-KEY+

I/OPAD

P217TX-ENB-OPT

I/OPAD

P267

LPF-OUT

I/OPAD

C263

100U

P231+9V

I/OPAD

P257CTCSS

I/OPAD

PL2102X3 WAY PLUG

PL2202X3 WAY PLUG

PL2152X5 WAY PLUG

PL2052X3 WAY PLUG

T210

T4030

1

23

4

8

76

5

P248LED-GND

I/OPAD

P230+9V

I/OPAD

SL201

SL202

SL203

SL204

P273POCI

I/OPAD

P275POCR

I/OPAD

%C294 47P P225

OPTO-KEY- I/OPAD R289

100K

Q210BC848

Q220BC817

Q230BC848

Q240BC848

Q250BC817

Q260BC857

Q270BD139

D270

BAV99

23D270

BAV99

31

D220BAV99

2

3

D220BAV99

3

1

TP206

R2850

P265

I/OPAD

P210 I/OPAD

P211 I/OPAD

P212 I/OPAD

+9V

VCO-MOD

5A9

REF-MOD

7C7

CTCSS

1R2

CTCSSM

8A2

AUDIO-21R3

OPTO-KEY+1R3

OPTO-KEY-1R3

TX-ENABLE1R46B1

+9V

+9V

+5V

6B77A6

SCK6B47A28R38R3

E-P8R4

SDA7A28R4

+9V

+9V +4V1

+4V1

+4V1

+4V1

+9V

+9V

+4V1

+4V1

+4V1

+5VFILT

+5VFILT

+9V

+9V +9V+9V

LED8R4

+9V

+9V 3Q85A16B67A58A1

+9V

LINE-I-P-1

1R1

LINE-I-P-4

1R2

LINE-I-P-3

1R2

LINE-I-P-2

1R2

GND1R01R03Q75A36B07A48A09C610A3

TX-RELAY-DRV8Q6

TX-REG

3Q75A06E8

+4V1

AUDIO-1

+4V1

+4V1

CARRIER SWITCH

MIC/PRESSEL

LINE SENSITIVITY

COMPRESSION-LEVEL

OPTO-KEY-S/L

OPTO-KEY+S/L

LINE-I-P-3-S/L

LINE-I-P-2-S/L

6B0

6B6

+4V1-TESTPOINT

LINE-LIMITER:OPTIONAL%D205 %D210

AUTOMATIC LEVEL CONTROL (COMPRESSION)

DIGITAL-POTENTIOMETER

Tx-on

+9V

0V6

OPTO-KEY

PRE-EMPHASIS

4V1

4V1 4V1

LIMITER-1

7V2pp INLIMITING

LIMITER-2

BUFFER

4V1

4V1

REFERENCEMOD-EPOT

REFERENCE-MODULATION-INTEGRATOR

VCO-MOD

1KHZ INLIMITING

ATTENUATOR

MICROPHONE PREAMPLIFIER

0V6

3V6

3V6

4V1 3V5

2V7DEVIATION EPOT

LOW PASS FILTER

ALC PULSES

SUMMINGAMPLIFIER

4V1

4V1

1KHz INLIMITING

0.2VppWITH ALC

4V1

SCK

SDA

E-P

VARIANT COMPONENTS

&C269 &R264 &R265 &R266

Refer to the parts list for the values for each product type.



Sheet 3 - T837 Exciter220-01390-02

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TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


3

10

T837EXEXCITER

139002A

220-01390-02

2-6-97

2A

T837 DAVES


R390

12

R394

12

R396820

R392820

C3881N0

C3761N0

C394

1N0

C3918P2

C36882P

C37347N

C3854U7

C3701N0

C379

1N0

R374330

R378560

R38647

R3761K0

R3843R3

R382180

R380180

R388560

C3121N0

C3201N0

C3241N0

R322

22

R3201K0

R318

2K2

R316

10K R328

470

R326470

R3121K5

R314150

R31022K

R306

10K

R30222K

R30415K

R308

100K

C3161N0

C3044N7

R360

39

R359150

R362150

C349

1N0

R3641K0

R370560

C3531N0

C356150P

C350

1N0

R3721K0

R3681K0

R332

22K

C3321N0

C3361N0

R33410K

R344

47K

R342

15K

C33822N

R346120K

C3441N0

R350

1K0

R3484K7

R352

15K

R354

15K

R3561K0

C3401N0

C36533P

C38247P

C3591N0

C362

1N0

TP305

C396

1N0

R36647

C30810N

+

-

IC330358

5

6

7

BAT18

D35023

BAT18D360

2

3

BAT18D340

2

3

L335

330N

L340330N

L345

2.5T/3.5

L3551U5

L375

#F8

L3801U5

L385

3.5T/4.0

L365

1.5T/3.0

L360

3.5T/4.0

L390330N

+

-IC330358

3

2

1

IC330358

V-4

V+8

C330A10N

L3704S3

R3361K0

R3381K0

C33410N

R340100K

SL320

C342100N

L350

1.5T/2.5

SK310

SIDE ENTRY COAX SKT

C3991N0

R324470

C3461N0

C330B10U

R33022

Q305BC848

Q310BC848

Q315BD234

Q3653866

Q3702N4427

Q320BC807

Q325BC807

Q330BC857

Q335BC807

Q345BC848

Q340BC848

C318100P C317

100P

TP308

+9V

+13V8

+9V

+13V8

+13V81R11R16B5

LOCK-DETECT

7R5

VCO-O-P

5F2

+9V2A05A16B67A58A1

TX-REG2R75A06E8

+9V

TX-REG

+9V +13V8 TX-REG

GND1R01R02R35A36B07A48A09C610A3

TX-REG

(GRID REF 1M8)

COAX FROMI/P ATTENUATOR

RF PIN SWITCH

CYCLIC KEYING

OUTPUT ATTENUATOR

SPARE GATE

EXCITER

POWER CONTROL

TX-REG TESTPOINT

FAST-KEY-OPTIONS/A

6B6

6B5

6B0

SK310 TO SK420

(VIA COAX)

3V9

0V6

Tx-on

Tx-on

+9V

0VTx-on Tx-off

+9V

+5VTx-on Tx-off

Tx-on Tx-off0V 0V

+9V +9V

Tx-on Tx-off0V 0V

+10V6 +10V6

1V5 6V7Tx-on Tx-on

TX-REG ORLOCK-DETECTTEST POINT

PIN-SWITCH-A

PIN-SWITCH-B

EXCITER-CONTROL-VOLTAGE

EXCITER-PA-CONTROL

LOCK-DETECT



Sheet 4 - Not Used In The T837220-01390-02

SK420 is the only component in this section of the T837 circuitry and is shown on sheet 1.



Sheet 5 - T837 VCO Section220-01390-02

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7

8

9

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2

3

4

5

6

7

8

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TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


5

10

T837EXVCO-SECTION

139002A

220-01390-02

2-6-97

2A

T837 DAVES


SK5051 WAY SOCKET

SK5031 WAY SOCKET

SK5021 WAY SOCKET

SK5011 WAY SOCKET

SK5131 WAY SOCKET

SK5221 WAY SOCKET

SK5041 WAY SOCKET

SK5311 WAY SOCKET

CV-OUT

SK5341 WAY SOCKET

SK5331 WAY SOCKET

SK5321 WAY SOCKET

SK5351 WAY SOCKET

VCO SUPPLY

R520120K

C51022N

R525

47K

R53510K

R530

22K

SL501

R540

2K2

R5452K2

R550

4K7

R5554K7

R5602K7

TANT

C5504U7

C51310N

C535100N

C503

4N7

R505

15K

R502

330

R51556

R510

680

C505100N

Q520BC807

Q530BC807

Q510BC807

Q540BC807

Q550BC848

GND1R01R02R33Q76B07A48A09C610A3

VCO-O-P3B2

DIV-BUFFER

7R0

VCO-MOD

2R2

CNTRL-VOLT

7R3

+9V

+9V 2A03Q86B67A58A1

TX-REG

2R73Q76E8

+9V

1

2

3

4

5

1

2

3

4

5

FAST-KEY-OPTION/B

6B0

6B6

+9V Tx-on

+8V Tx-on

8V4

The circuit diagram for the VCO PCB is in Part E.



Sheet 6 - T837 Regulators220-01390-02

0

1

2

3

4

5

6

7

8

9

0

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2

3

4

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6

7

8

9



TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


6

10

T837EXREGULATORS

139002A

220-01390-02

2-6-97

2A

T837 DAVES


C66510U

C690100N TANT

C69310U

C630100N

TANT

C63410U

C631A100N

C6551N0

C6401N0

C625470U

C6264N7

C6281N0

TANT

C6703U3

C6734N7

C6771U0

TANT

C68410U

C6381N0

C6231N0

C6871N0

C660100N

C681100N

C636100N

VREGIC630

LM317L

VIN

3

ADJ2

VOUT1

R681

100

R689

10

R63722

R649

4K7

R625

1K0

R629270

R621

1E0

R619

1E0

R6336K8

R65310K

R65710K

R665

100K

R673100K

R693100K

R68515K

R69656K

R661

10K

R6411K5

R645470

T610#650

2

3 6

1 4

IC640358D

V-4

V+8

+

-

IC640358D

5

6

7

+

-IC640358D

3

2

1

R613560

C6051N0

R609

1K0

BAV70

D6302 3

BAV70D620

1

3

BAV70D620

2

3

R66947K

R6771K0

BAV70

D6301 3

BAV70

D64013

BAV70

D64023

VREGIC610

78L05

VIN

3

GND1

VOUT2

C611A100U

C610B100U

C610A10N

C611B10N

R617

0

Q610BC807

Q620BD234

Q630BC557

TP604

Q660BC817

Q670BC857

D610

BAV99

2 3D610

BAV99

3 1

D635BAT65

R615100

IC650

LOW PWR MON

PBRST1

TD2

TOL3

GND 4

+V8

ST7

RST6

RST5

TP601

TP602

TP607

TP603

+13V8+5V

+9V

+9V

GND1R01R02R33Q75A37A48A09C610A3

+13V81R11R13Q8

+9V2A03Q85A17A58A1

TX-REG

2R73Q75A0

TX-CONT8A4

TX-KEY1R5

TX-ENABLE1R42A3

+9V

+5V2A67A6

+20V7A4

+5V

+9V

+20V

+13V8

+5V +9V +13V8 +20V

TX-ENB8A8

+5VDIG

+9V +5VDIG

+5VDIG8A9

+5VDIG

DGND8A0

RESET8A8

WATCHDOG

8R5

NOT-RESET2A77A28R38R3

+20V SUPPLY

+5V REGULATOR

+9V REGULATOR

+20V TESTPOINT

+5V TESTPOINT

+5VDIG SUPPLY

DGND CONNECTS GNDTHROUGH R617

DS1232

+13V8 TESTPOINT+5VDIG

TESTPOINT

+9V-TESTPOINT

+5V

+1V3Tx-offTx-on

5V

24vpp

240KHz

+9V

0V(Tx)

+9V-Tx on

0V



Sheet 7 - T837 Synthesiser220-01390-02

0

1

2

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5

6

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8

9

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2

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4

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8

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TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


7

10

T837EXSYNTHESISER

139002A

220-01390-02

2-6-97

2A

T837 DAVES


IC740145191

REF IN20

REF OUT1

LD2

OR3

OV4

RX8

TEST19

FIN10

GND7

VPD5

VCC12

VDD14

PDOUT6

DATA19

CLK18

ENABLE17

OUT A16

OUT B15

TEST213

FIN11 R787

10

C7901N0

R7853K3

R78468

C7841N0

C7881N0

R791100

R7921K0

C782

1N0

R70122

12.8M

=IC700

GND OUT

VCC FMR7031M0

R7021M0

C700100N

C709100N

C71010N

C705

8P2

R706

15K

R708

100K

R712

10

C7031N0

IC710

74HCU04T

V-7

V+14

IC710

74HCU04T

1 2

IC710

74HCU04T

1312

IC730

74HC4520

EN2

CLKA1GND8

Q03

Q14

Q25

Q36

RST7

VDD16

IC730

74HC4520

EN10

CLKB9Q0

11Q1

12Q2

13Q3

14

RST15

R711

100

C722100N

R713

22

TANT

C7084U7

R7172K7

R71856K

C727220P

R72110K

R72210K

R723

2K7

C729220P

R72810K

IC75033078D

V-4

V+8

+

-

IC75033078D

5

6

7

C776

15N

%C71310N

%R715

1K0

C741B10N

R74422

C740B10N

R742150

R74622

R74722

C742B10N

C742A100N TANT

C741A4U7

R767680

R7541K0

R7531M0

R75222

C75710N

R75022

TANT

C75010U

R757470K

R756470K

C75910N

TP710

C76410N

TANTC765

4U7

R7661K0

R765680

R760180

R759330

C76110N

TANT

C76222U

C7671N0

R769

180

R762

100

R7718K2

R763

100

TANT

C77022U

TANT

C77222U

C7691N0

R7748K2

R77222K

R775

5K6

C774

330N

R790220

C786100N

C74347P

C73647P

C73547P

R748

47K

R719

56K

C726

10N

R72710K

%R726

100

%C733470P

R786

10

C792

1N0

L75068NH

C7451N0

%C7071U0

R74947K

TANT

C72422U

=R70547

=SK710

SIDE ENTRY COAX SKT

IC710

74HCU04T

9 8

IC720

74HCU04T

V-7

V+14

IC710

74HCU04T

3 4

IC720

74HCU04T

9 8

IC720

74HCU04T

5 6IC720

74HCU04T

3 4

IC720

74HCU04T

12

+

-

IC75033078D

3

2

1

R743

150

C740A1N0

IC710

74HCU04T

1110

R710

100

IC710

74HCU04T

5 6IC720

74HCU04T

13 12IC720

74HCU04T

11 10

C720100N

Q710BC848

Q720BC857

Q730BC848

Q740BC857

Q750BC807

Q770BC857

Q760BC848

Q780BC848

Q785BC857

Q775BC857

D

S

G Q790BFR31

Q795MMBR571

D710

BAV99

2 3D720

BAV99

2 3

D710

BAV99

31

D720

BAV99

31

D730

BAT65

D740

BAT65

C71247P

TANT

C72522U

R72039K R725

39K

R7581K2

R777

2K2

P750 I/OPAD

TP715

C70647P

+9V

+5V +5V

+5V

+5V

+5V

+9V

+5V

GND1R01R02R33Q75A36B08A09C610A3

MCU-CLOCK

8A2

SDA2A78R4

SCK2A76B48R38R3

SYNTH8R4

REF-MOD

2R1

+5V2A66B7

+9V2A03Q85A16B68A1

+20V6B5

+5V

+9V

+20V

+20V

LOCK-DETECT

3Q6

DIV-BUFFER5J5

CNTRL-VOLT

5A7

SPARE GATESIC710 IC720

LOCK-DETECT TESTPOINT

LOCKED-LOW

EXTERNALREFERENCEOPTION

6B6

6B0

2A76B48R3

12.8MHz TESTPOINT

LOOP-FILTER

DIVIDERBUFFER

CHARGE-PUMP

PHASE-MODULATOR

1V4

6V6

12.8MHz

200KHz

200KHz

+5V TO +15V LOCKED

50ns WHEN+5V

0V LOCKED

50ns WHEN+5V

0V LOCKED

LOCK-DETECT



Sheet 8 - T837 Microcontroller220-01390-02

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1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9



TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


8

10

T837EXMICROCONTROLLER

139002B

220-01390-02

9-12-97

2B

T837 DAVES


2B ADDED D-RANGE 2 PINOUT DAVEE 09-12-97

R82147K

R811

4K7

R810

4K7

R824 2K2

R825 2K2

R826 2K2

R827 2K2

R828 2K2

R840 2K2

R841 2K2

R842 2K2

R8134K7

R8124K7

R87910K

R8774K7

IC830LM324D

V-11

V+4

+

-

IC830LM324D

5

6

7

+

-

IC830LM324D

12

13

14

+

-

IC830LM324D

3

2

1

R871

47K

R875

47K

R873

33K

R859

150K

R861

150K

R863

150K

R865100K

R867100K

+

-

IC830LM324D

10

9

8

C823

22N

C824

47N

C826220P

C82810N

CW RV80522K 2

3

1

SK810

80C51

P1.79

P1.68

P1.57

P1.46

P1.35

P1.24

P1.13

P1.02

P3.7/RD19

P3.6/WR18

P3.5/T117

P3.4/T016

P3.3/INT115

P3.2/INT014

P3.1/TXD13

P3.0/RXD11

VSS22

XTL121

XTL220

RST10

VCC44

P0.736

P0.637

P0.538

P0.439

P0.340

P0.241

P0.142

P0.043

EA35

ALE33

PSEN32

P2.731

P2.630

P2.529

P2.428

P2.327

P2.226

P2.125

P2.024

R822

47K

C841100U

C838100U

C84410N

C8131N0

IC820

24C16

A01

A12

A23

GND4

+V8

SCL6

SDA5

WP7

C827

33P

R846 470

R847 470

R845 470

R854

4K7

R853

4K7

R849 470

R8094K7

R8554K7

R843 2K2

SL810P805

AUX_OUT

I/OPAD

C83047N

R850 470

R808

10

P810

SERIAL-COM-1 I/OPAD

R837 2K2

R836 2K2

R835 2K2

R833 2K2

R832 2K2

R831 2K2

R830 2K2

R829 2K2 SK805

2X8 WAY TOP ENTRY SMD SKT

CH-SLCT-01

SK805


TX-RELAY-DRV2

SK805


CH-SLCT-13

SK805


CTCSS-DISABLE4

SK805


CH-SLCT-25

SK805


CH-SLCT-76

SK805


CH-SLCT-37

SK805


SERIAL-COM-18

SK805


CH-SLCT-49

SK805


AUX-OUT-010

SK805


CH-SLCT-511

SK805


AUX-OUT-112

SK805


CH-SLCT-613

SK805


AUX-OUT-214

SK805


GND15

SK805


+5VDIG16

P820AUX-OUT-7

I/OPADP825

AUX-OUT-6 I/OPADP830

AUX-OUT-5 I/OPADP835

AUX-OUT-4 I/OPAD

R801150K

R80247K

R8724K7

R8744K7

R8764K7

R8484K7

C81047N

Q810BC848

Q860BC848

Q820BC817

Q830BC857

TAN

T

C82

24U

7

R815

47K

R816150K

C812

100P

R818

4K7 R819

4K7

Q850BC848

Q840

BC857

D810

BAT65

P840AUX-OUT-3

I/OPAD

+9V

+9V

+5VDIG

+5VDIG

+5VDIG

MCU-CLOCK

7A6

SYNTH7A2

SCK

2A76B47A2

E-P2A7

CTCSSM

2R5

TX-CONT

6B8

TX-ENB6B3

LED2R7

SERIAL-COM

1R4

+9V2A03Q85A16B67A5

+9V

SDA2A77A2

TX-RELAY-DRV

2R6

GND

1R01R02R33Q75A36B07A49C610A3

+5VDIG

RESET6B4

DGND

6B9

+5VDIG6B7

+5VDIG

+5VDIG

NOT-RESET2A76B47A2

WATCH-DOG6B5

+5VDIG

+5VDIG

+9V

CHANNEL SELECT TO MICRO BUS

CTCSS LEVELADJUST

MICRO-BYPASS

6B6

6B0

12.8MHz

+5V

0VCTCSSM FREQUENCY

+5V

0VCTCSSM FREQUENCY

+9V

0VCTCSSM FREQUENCY

5V

5V

0V

VARIABLE

MIC

RO

MA

TCH

TO

D-R

AN

GE

2 C

ON

NE

CTI

ON

S

PINPIN

8

9

12

10

13

14

15

NC

11

7

6

5

4

3

2

1

D-RANGE2

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

MICROMATCH

MCU-CLOCK

CTCSS_LSB

EPOTS

CTCSS_MSBCTCSS_RX

CH-SLCT-7

CH-SLCT-6

CH-SLCT-5

CH-SLCT-4

CH-SLCT-3

CH-SLCT-2

CH

-SLC

T-7

CH

-SLC

T-6

CH

-SLC

T-5

CH

-SLC

T-4

CH

-SLC

T-3

CH

-SLC

T-2

CH

-SLC

T-1

CH

-SLC

T-0

CH-SLCT-1

CH-SLCT-0

TX_KEY_IN

LED_FLASH

SERIAL-COM-1

CTCSS_DISABLE

TX_KEY_OUT

TX_KEY_OUT

SCKSDASYNSWATCHDOG

Circuit Diagram Amendments

SK805 pin 16 was incorrectly labelled “AUX-OUT-3”. The label at grid reference Q7 has been corrected to read “+5VDIG”. The line from IC810 pin 19 to SK805 pin 4 was incorrectly labelled “CTCSS_ENABLE”. The labels at grid references H4 & Q6 have been corrected to read “CTCSS_DISABLE”.



Sheet 9 - T837 Harmonic Filter220-01390-02

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

A B C D E F G H J K L M


TAIT ELECTRONICS

IPN:

FILE DATE:

ISSUE: ID:.


9

10

T837EXHARMONIC-FILTER

139002A

220-01390-02

2-6-97

2A

T837 DAVES0A ORIGINAL DAVES 1A D-RUN-UPDATE DAVES

AA

K

SOT23DIODES

KA

KA

SOT23DIODES

KK

A

SOT23DIODES

B E

C

SOT23PNP

B E

C

SOT23NPN

TO-92PNP

B

C

E

TO-92FET

S

G

D

TO-126PNP

ECB

D S

G

SOT23FET

CHIPTANTALUMS

2A 7094,7129,0000,7130 DAVES

NCA

K

SOT23DIODE

C91012P

C92027P

C93012P

L910

3.5T/4.0

L920

3.5T/4.0

ANTENNA

GND1R01R02R33Q75A36B07A48A010A3

SKT

1R81M8

HARMONIC-FILTER

BAV70 BAV99

DIODE PHYSICAL PIN OUTS

BAW56 BC857BC807

BC848BC817

MMBR571MMBR951L

BC557 BF247 BD234BFR31

TRANSISTOR PHYSICAL PIN OUTS

6B0

TANTALUMS

BAT18

K

ABAT65

m830-00-202 a3 pages

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