DRAKE DD860 User manual

Brand: DRAKE

Model: DD860

Type: User manual

1 DD860 DIGITAL DEMODULATOR

CONTROLS, INDICATORS AND CONNECTIONS 2

DIGITAL DEMODULATOR

CHANNEL

LOCK

ERROR

SNR

40 dB

15 dB

DD806

0 4

DIGITAL DEMODULATOR

CHANNEL

LOCK

ERROR

SNR

40 dB

15 dB

DD806

0 4

DIGITAL DEMODULATOR

CHANNEL

LOCK

ERROR

SNR

40 dB

15 dB

DD806

0 4

POWER SUPPLY

PS8

R.L. DRAKE COMPANY

230 INDUSTRIAL DRIVE

FRANKLIN, OHIO 45005 U.S.A.

CUSTOMER SERVICE AND PARTS TELEPHONE: +1 (937) 746-6990

TELEFAX: +1 (937) 743-4576

WORLD WIDE WEB SITE: http://www.rldrake.com

12 POSITION RACK MOUNT POWER SUPPLY

DD860 SATELLITE DEMODULATOR

TM is a trademark of the R.L. Drake Company

® is a registered trademark of the R.L. Drake Company

The R.L. Drake model DD860 Digital

Demodulator is a professional quality modular

digital headend component designed to provide

optimum performance for VSB or QAM

demodulation. The DD860 receives an 8 VSB,

16 VSB, 64 QAM, or 256 QAM signal from a

terrestrial broadcast or CATV feed in the 54 to

858 MHz range, and demodulates the signal

providing an MPEG-2 digital transport stream

output.

The DD860 normally provides two 75 Ohm,

serial ASI outputs. A parallel SPI output is

available on special order.

Front panel signal to noise ratio and staus

indicators are provided.

A low phase noise tuner design provides

reliable operation with dense signal constella-

tions such as 256 QAM or 16 VSB.

An NTSC co-channel rejection filter for VSB

modes is incorporated.

A wide range equalizer eliminates multipath

effects.

QAM modes incorporate auto selection of ITU

A (DVB) or ITU B (DigiCipher II)

FEC.

IRC and HRC channel plans are selectable by

moving an internal jumper.

The DD860 is designed to mount in the

DRMM12 rack mounting cage.

RF INPUT

POWER

SPI LVDS OUTPUT

+12 V GND +5 V

ASI TRANSPORT

STREAM OUTPUT

RF INPUT

POWER

SPI LVDS OUTPUT

+12 V GND +5 V

ASI TRANSPORT

STREAM OUTPUT

DIGITAL DEMODULATOR

CHANNEL

LOCK

ERROR

SNR

40 dB

15 dB

DD806

0 4

Figure 1

F1 - LOCK

This indicator shows that the demodulator is

receiving a valid digital signal and has locked

to it.

F2 - LED Signal-to-Noise Ratio Meter

Indicates the signal-to-noise ratio of the

received signal. The range is between 15 dB

and 40 dB. Threshold levels are nominally

15 dB for 8VSB, 29 db for 16VSB, 23 db for

64 QAM, and 28dB for for 256QAM. These are

minimum levels required for lock. Normal

operating levels must exceed threshold by

several dB to ensure reliable operation.

F3 - CHANNEL Selector Switch

This switch is used to enter the two or three

digit channel number. The range of numbers is

also used to determine the mode of operation.

F4 - ERROR

This indicator shows that the FEC is not able to

correct all errors in the received signal. Check

for a low signal-to-noise ratio or improper

antenna aiming if errors occur.

FRONT PANEL CONTROLS AND

INDICATORS

R1 - RF INPUT

This "F" type connector is the input for the

tuner. The DD860 will tune to all U.S.A. off air

broadcast frequencies or to standard EIA CATV

channels up to 858 MHz (channel 134).

R2 - DC Power Connector

This is the power input connector. Connect to a

Drake PS8 or equivalent power supply.

R3 - BNC Connectors (ASI output model)

These are the MPEG2 transport stream

outputs. The ASI (Asynchronous Serial

Interface) Output Impedance is 75 Ohms.

R4 - 25 Pin SPI LVDS OUTPUT Connector

(SPI output model)

This is the MPEG2 transport stream output.

The DVB Synchronous Parallel Interface levels

comply with low voltage differential signalling

specifications.

Figure 2 (ASI)

+12V GND +5

REAR PANEL CONNECTIONS

Figure 3 (SPI)

3 INSTALLATION

DD860 CHANNEL SELECTION / CHANNEL CHARTS 4

The front panel channel selection switches are

used to select the mode of demodulation, the

desired band plan (CATV or Broadcast) and the

specific channel number. Four blocks of 133

channels each are allocated to CATV channels

and two blocks of 68 channels each are

allocated for off-air broadcast frequencies.

CATV channels in 64 QAM modulation are

selected using switch settings 002 through 134.

These switch settings correspond directly to the

EIA CATV channel numbers.

CATV channels in 256 QAM modulation are

selected using switch settings 202 through 334.

To determine the switch setting, add 200 to the

desired EIA CATV channel number.

CATV channels in 8 VSB modulation are

selected using switch settings 402 through 534.

To determine the switch setting, add 400 to the

desired EIA CATV channel number.

CATV channels in 16 VSB modulation are

selected using switch settings 602 through 734.

To determine the switch setting, add 600 to the

desired EIA CATV channel number.

Off-Air Broadcast channels in 8 VSB may be

tuned by selecting channels 802 through 869.

Add 800 to the broadcast channel number that

corresponds to the actual RF transmission

channel. Do not enter the virtual channel

number, used by some broadcasters.

NOTE: IRC and HRC CATV formats are

supported by setting of an internal jumper.

473

479

485

491

497

503

509

515

521

527

533

539

545

551

557

563

569

575

581

587

593

599

605

611

617

623

629

635

641

647

653

659

665

671

677

683

689

695

701

707

713

719

725

731

737

743

749

755

761

767

773

779

785

791

797

803

Center of Channel

Frequency (MHz)

UHF BROADCAST CHANNELS 8VSB

Channel

Number

OFF-AIR

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

DD860

Channel

177

183

189

195

201

207

213

Center of Channel

Frequency (MHz)

VHF BROADCAST CHANNELS 8VSB

Channel

Number

OFF-AIR

802

803

804

805

806

807

808

809

810

811

812

813

DD860

Channel

90-260 VAC

DC OUTPUTS X 8

12V GND 5V

RF INPUT

POWER

SPI LVDS OUTPUT 4

+12 V GND +5 V

ASI TRANSPORT

STREAM OUTPUT

RF INPUT

POWER

SPI LVDS OUTPUT 4

+12 V GND +5 V

ASI TRANSPORT

STREAM OUTPUT

RF INPUT

POWER

SPI LVDS OUTPUT 4

+12 V GND +5 V

ASI TRANSPORT

STREAM OUTPUT

All connections to and from each module are

made through the rear panel. Refer to Figure 4

for correct cable and wiring connections.

RACK MOUNTING

Adequate ventilation is very important in

multichannel installations.

Figure 4

The DRMM12 frames should be spaced apart

vertically by at least 1 3/4" wherever possible.

Air movement is mandatory in enclosed rack

cabinets. Excessive heat will shorten

component life.

DD860

DEMODULATOR UNIT

AC POWER

CORD

FROM OFF-AIR

ANTENNA OR CATV

PS8 POWER SUPPLY

1 Data Clk +

2 GND

3 Data 7 +

4 Data 6 +

5 Data 5 +

6 Data 4 +

7 Data 3 +

8 Data 2 +

9 Data 1 +

10 Data 0 +

11 Data Valid +

12 Start of Packet +

13 GND

The DD860 is designed to mount into the

DRMM12 rack mounting enclosure.

The DD860 is four units wide. Power for the

DD860 should be supplied by the model PS8

power supply module which also mounts into

the DRMM12.

Pin Out DVB SPI Interface

14 Data Clk -

15 GND

16 Data 7 -

17 Data 6 -

18 Data 5 -

19 Data 4 -

20 Data 3 -

21 Data 2 -

22 Data 1 -

23 Data 0 -

24 Data Valid -

25 Start of Packet -

QAM ASI

INPUT

QAM SPI

INPUT

POWER SUPPLY CABLES

DD860

Channel

602

603

604

605

606

695

696

697

698

699

614

615

616

617

618

619

620

621

622

607

608

609

610

611

612

613

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

5 CHANNEL CHARTS, continued

Channel

Number

CABLE TV CHANNELS

Center of

Channel

EIA/NCTA

Numeric

Equivalent

Frequency

in MHz

105

111

117

123

129

135

141

147

153

159

165

171

177

183

189

195

201

207

213

219

225

231

237

243

249

255

261

267

273

279

285

291

297

303

309

315

321

327

333

339

345

351

357

DD860

Channel

DD860

Channel

202

203

204

205

206

295

296

297

298

299

214

215

216

217

218

219

220

221

222

207

208

209

210

211

212

213

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

DD860

Channel

402

403

404

405

406

495

496

497

498

499

414

415

416

417

418

419

420

421

422

407

408

409

410

411

412

413

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

64 QAM 256 QAM 8 VSB 16 VSB

CHANNEL CHARTS, continued 6

DD860

Channel

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

700

Channel

Number

CABLE TV CHANNELS

Center of

Channel

EIA/NCTA

Numeric

Equivalent

100

Frequency

in MHz

363

369

375

381

387

393

399

405

411

417

423

429

435

441

447

453

459

465

471

477

483

489

495

501

507

513

519

525

531

537

543

549

555

561

567

573

579

585

591

597

603

609

615

621

627

633

639

645

651

DD860

Channel

100

DD860

Channel

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

300

DD860

Channel

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

500

64 QAM 256 QAM 8 VSB 16 VSB

7 CHANNEL CHARTS, continued

DD860

Channel

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

Channel

Number

CABLE TV CHANNELS

Center of

Channel

EIA/NCTA

Numeric

Equivalent

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

Frequency

in MHz

657

663

669

675

681

687

693

699

705

711

717

723

729

735

741

747

753

759

765

771

777

783

789

795

801

807

813

819

825

831

837

843

849

855

DD860

Channel

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

DD860

Channel

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

DD860

Channel

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

64 QAM 256 QAM 8 VSB 16 VSB

THREE YEAR LIMITED WARRANTYTHREE YEAR LIMITED WARRANTY

THREE YEAR LIMITED WARRANTY

R.L. DRAKE COMPANY warrants to the original purchaser this product shall be free from defects in material or workmanship for three (3)

years from the date of original purchase.

During the warranty period the R.L. DRAKE COMPANY or an authorized Drake service facility will provide, free of charge, both parts and

labor necessary to correct defects in material and workmanship. At its option, R.L. DRAKE COMPANY may replace a defective unit.

To obtain such warranty service, the original purchaser must:

(1)(1)

(1) Retain invoice or original proof of purchase to establish the start of the warranty period.

(2)(2)

(2) Notify the R.L. DRAKE COMPANY or the nearest authorized service facility, as soon as possible after discovery of a possible defect,

of:

(a) the model and serial number,

(b) the identity of the seller and the approximate date of purchase; and

(c) A detailed description of the problem, including details on the electrical connection to associated equipment and the list of such

equipment.

(3)(3)

(3) Deliver the product to the R.L. DRAKE COMPANY or the nearest authorized service facility, or ship the same in its original container

or equivalent, fully insured and shipping charges prepaid.

Correct maintenance, repair, and use are necessary to obtain proper performance from this product. Therefore carefully read the Instruction

Manual. This warranty does not apply to any defect that R.L. DRAKE COMPANY determines is due to:

(1)(1)

(1) Improper maintenance or repair, including the installation of parts or accessories that do not conform to the quality and specifications

of the original parts.

(2)(2)

(2) Misuse, abuse, neglect or improper installation.

(3)(3)

(3) Accidental or intentional damage.

All implied warranties, if any, including warranties of merchantability and fitness for a particular purpose, terminate three (3) years from the

date of the original purchase.

The foregoing constitutes R.L. DRAKE COMPANY’S entire obligation with respect to this product, and the original purchaser shall have no

other remedy and no claim for incidental or consequential damages, losses or expenses. Some states do not allow limitations on how long

an implied warranty lasts or do not allow the exclusions or limitation of incidental or consequential damages, so the above limitation and

exclusion may not apply to you.

This warranty gives you specific legal rights and you may also have other rights which vary from state to state. This warranty shall be

construed under the laws of Ohio.

WARRANTY

SPECIFICATI0NS

RF TUNER

Input Frequency:

Input Channel Bandwidth:

Input Impedance/Return Loss:

Optimum Input Level Range:

Maximum Input Power:

Input Noise Figure:

Input AGC Range:

DEMODULATOR

Modulation Types Accepted:

Symbol Clock Frequency:

Symbol Rates:

Equalizer Span:

OUTPUTS

ASI Output Version - Serial Output:

SPI Output Version - Parallel Output:

GENERAL

DC Power Requirement:

Operating Temperature Range:

Mechanical Dimensions:

Weight:

54 to 858 MHz, Broadcast or EIA CATV Channels (Std., IRC, HRC).

6 MHz.

75 Ohms/R.L. of 6 dB minimum.

-15 dBmV to +15 dBmV.

< -16 dBm summed over entire input range.

12 dB, maximum.

-20 to +30 dBmV.

8VSB, 16VSB, 64QAM, and 256QAM.

8VSB; 10.762 MHz.

16VSB; 10.762 MHz.

64QAM; 5.057 Ms/sec.

256QAM; 5.3605 Ms/sec.

-6 to +40 µSec delays.

ASI according to DVB specifications via two 75 Ohm type BNC connectors.

SPI according to DVB specifications. LVDS levels via one DB25 connector.

5 VDC@ 750 mA, 12 VDC @ 85 mA (Supplied by Drake PS8 power supply).

C to + 50

C Ambient temperature around case.

4.2" W x 3.5" H x 8.38" D, (10.7 cm W x 8.9 cm H x 21.3 cm D).

1 lb. 9 oz. (.72 kg.).

DRAKE DD860 User manual

DRAKE DD860 User manual

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