Tektronix DS1001, DS1002, DS1003 User Manual

User Manual

DS1000 Series Television Demodulators

070-9858-01

Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.

Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

General Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contacting Tektronix x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Started

Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Physical Dimensions 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Standard Accessories 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional Accessories 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Installation 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC Power Source 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing the Mains Voltage 1–4. . . . . . . . . . . . . . . . . . . . . . . .

Power On Procedure 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mechanical Installation 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Custom Installation 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rackmount Information 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Check 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Basics

Functional Overview 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel Features 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rear Panel Connectors 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Procedures 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Applying Power 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Display Modes 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting a Program 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjusting the Current Program 2–9. . . . . . . . . . . . . . . . . . . . . .

Reference

Configuring Operation 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Quick Guide 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Program Configuration 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Configuration 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DS1000 Series User Manual

Table of Contents

Frequency Response Configuration 3–10. . . . . . . . . . . . . . . . . . . . . .

Contrast Adjustment 3–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

User Defined Channel Table 3–13. . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendices

Appendix A: Performance Specifications A–1. . . . . . . . . . . . . . .

Appendix B: Remote Control B–1. . . . . . . . . . . . . . . . . . . . . . . . .

Serial Port Connection B–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Programming Model B–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Addresses B–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Operation Flag B–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Command Types B–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sending and Receiving Data B–5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Send Address Phase B–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Send Data Phase B–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receive Address Phase B–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Polling for Status Messages B–8. . . . . . . . . . . . . . . . . . . . . . . . .

Getting a Message B–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Command Syntax B–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Types B–1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Offset B–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Command Descriptions B–13. . . . . . . . . . . . . . . . . . . . . . . .

AFC B–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AUD_OUT B–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AUD_PREF B–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BTSC B–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHANNEL B–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DISC B–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FREQ B–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IDN B–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LOG? (Query only) B–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MSG B–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MSG_C B–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PATH B–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PRESET B–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PWD B–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RECPRT B–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REPORT? (Query only) B–26. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SETT B–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STRAP B–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DS1000 Series User Manual

Appendix C: Service C–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packaging for Shipment C–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Fuse C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cleaning the Exterior C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix D: Channel Tables D–1. . . . . . . . . . . . . . . . . . . . . . . . .

Appendix E: Factory Default Settings E–1. . . . . . . . . . . . . . . . . .

Glossary Index

Table of Contents

TUNING B–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ZCP B–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DS1000 Series User Manual

iii

Table of Contents

List of Figures

Figure 1–1: Rear panel connectors 1–5. . . . . . . . . . . . . . . . . . . .

Figure 1–2: Typical system configuration 1–6. . . . . . . . . . . . . . .

Figure 2–1: DS1000 series front panel 2–1. . . . . . . . . . . . . . . . . .

Figure 2–2: Rear-panel connectors for NTSC and PAL

models 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure B–1: Pin assignments for the SERIAL connector B–2. .

DS1000 Series User Manual

List of Tables

Table 1–1: Power cord identification 1–2. . . . . . . . . . . . . . . . . .

Table 3–1: Configure menu hierarchy 3–1. . . . . . . . . . . . . . . . .

Table 3–2: Frequency response adjustment bands 3–11. . . . . . .

Table A–1: Video specifications A–2. . . . . . . . . . . . . . . . . . . . . . .

Table A–2: Audio specifications A–3. . . . . . . . . . . . . . . . . . . . . . .

Table A–3: Electrical specifications – power requirements A–4

Table A–4: Environmental characteristics A–4. . . . . . . . . . . . . .

Table of Contents

Table A–5: Physical characteristics A–4. . . . . . . . . . . . . . . . . . . .

Table A–6: Certifications and compliances A–5. . . . . . . . . . . . .

Table A–7: Safety certification and compliance A–6. . . . . . . . .

Table A–8: Safety standards A–7. . . . . . . . . . . . . . . . . . . . . . . . .

Table B–1: Rear-panel SERIAL port connections B–2. . . . . . . .

Table B–2: Special byte codes B–3. . . . . . . . . . . . . . . . . . . . . . . .

Table B–3: Data types used in remote communication B–11. . . .

Table D–1: CATV HRC channel table D–2. . . . . . . . . . . . . . . . . .

Table D–2: CATV IRC channel table D–3. . . . . . . . . . . . . . . . . . .

Table D–3: CATV standard channel table D–5. . . . . . . . . . . . . . .

Table D–4: Standard channel table D–7. . . . . . . . . . . . . . . . . . . .

Table D–5: IRC channel table D–9. . . . . . . . . . . . . . . . . . . . . . . . .

Table D–6: HRC channel table D–10. . . . . . . . . . . . . . . . . . . . . . . .

Table D–7: Broadcast channel table D–12. . . . . . . . . . . . . . . . . . . .

Table D–8: UHF Europa channel table D–13. . . . . . . . . . . . . . . . .

Table D–9: UHF China channel table D–14. . . . . . . . . . . . . . . . . .

Table D–10: VHF Europa channel table D–15. . . . . . . . . . . . . . . .

DS1000 Series User Manual

Table of Contents

Table D–11: VHF France channel table D–16. . . . . . . . . . . . . . . . .

Table D–12: VHF Italy channel table D–16. . . . . . . . . . . . . . . . . .

Table D–13: VHF Australia channel table D–16. . . . . . . . . . . . . .

Table D–14: VHF China channel table D–17. . . . . . . . . . . . . . . . .

Table D–15: VHF Ireland channel table D–17. . . . . . . . . . . . . . . .

Table D–16: VHF New Zealand channel table D–17. . . . . . . . . . .

Table D–17: VHF South Africa channel table D–18. . . . . . . . . . . .

Table D–18: VHF OIRT channel table D–18. . . . . . . . . . . . . . . . .

Table D–19: VHF CCIR channel table D–18. . . . . . . . . . . . . . . . .

Table E–1: Program default settings E–1. . . . . . . . . . . . . . . . . . .

Table E–2: System default settings E–2. . . . . . . . . . . . . . . . . . . .

DS1000 Series User Manual

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

While using this product, you may need to access other parts of the system. Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system.

To Avoid Fire or Personal Injury

Use Proper Power Cord. Use only the power cord specified for this

product and certified for the country of use.

Connect and Disconnect Properly. Do not connect or disconnect probes

or test leads while they are connected to a voltage source.

Ground the Product. This product is grounded through the grounding

conductor of the power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all

ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product.

Do Not Operate Without Covers. Do not operate this product with covers

or panels removed.

Use Proper Fuse. Use only the fuse type and rating specified for this

product.

Avoid Exposed Circuitry. Do not touch exposed connections and

components when power is present.

Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere. Keep Product Surfaces Clean and Dry. Provide Proper Ventilation.

tions for details on installing the product so it has proper ventilation.

DS1000 Series User Manual

Refer to the manual’s installation instruc-

vii

General Safety Summary

Safety Terms and Symbols

Terms in This Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the marking.

WARNING indicates an injury hazard not immediately accessible as you read the marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. These symbols may appear on the product:

WARNING

High Voltage

Protective Ground

(Earth) Terminal

CAUTION

Refer to Manual

Double

Insulated

viii

DS1000 Series User Manual

Preface

This is the user manual for the DS1000 Series Television Demodulators. It contains information about the DS1000 Series of products which includes: DS1001 (NTSC), DS1002 (PAL B/G), and DS1003 (PAL I).

Manual Overview

Topics covered in this manual are as follows:  Getting Started includes a product description as well as

installation and first-time power-on procedures.

 Operating Basics contains a functional overview, describing the

front- and rear-panel controls and connectors and a tutorial, guiding the user through basic instrument operation.

 Reference contains details on setting up unit presets and descrip-

tions of each preset item and its function.

 Appendix A provides instrument specifications, both electrical and

mechanical. Appendix B describes remote control interfaces, techniques, and

the command set.

Appendix C describes changing fuses and cleaning the product. Appendix D contains channel tables. Appendix E details the factory default settings.

DS1000 Series User Manual

Preface

Contacting Tektronix

Product Support

Service Support

For other information

To write us Tektronix, Inc.

For application-oriented questions about a Tektronix

measurement product, call toll free in North America:

1-800-TEK-WIDE (1-800-835-9433 ext. 2400) 6:00 a.m. – 5:00 p.m. Pacific time

Or contact us by e-mail: tm_app_supp@tek.com

For product support outside of North America, contact your local Tektronix distributor or sales office.

Contact your local Tektronix distributor or sales office. Or visit our web site for a listing of worldwide service locations.

http://www .tek.com In North America:

1-800-TEK-WIDE (1-800-835-9433) An operator will direct your call.

P.O. Box 1000 Wilsonville, OR 97070-1000

DS1000 Series User Manual

Getting Started

This section provides the information you need to use the television demodulator for the first time. Refer to the following sections to prepare the instrument for operation:

 Product Description  Options  Electrical Installation  Mechanical Installation  Functional Check

Product Description

The television demodulator can demodulate standard television RF signals to baseband video and audio. Different models cover the range of 55.25 to 801.25 MHz for NTSC M/N and 45.25 to 860.25 MHz for PAL B/G, and I. The high performance of the conversion guarantees a measurement-quality signal after demodulation.

Television demodulator Television system

DS1001 DS1002 DS1003

ББББББББ

To find the nomenclature and serial number of your instrument, check either of the following places:

 Before you have mounted the television demodulator, look at the

identification tag on the bottom panel.

 After you have installed and powered on the television demodula-

tor, push the Display button three times.

DS1000 Series User Manual

NTSC PAL B/G PAL I

БББББББББ

1–1

Getting Started

By applying an RF signal to the antenna input, the television demodulator provides baseband video and audio outputs and IF output signals.

You can set tuning conditions for stored programs, which are held in non-volatile memory. Tune the signal by channel, frequency, or preset program. Twenty presets can be stored and recalled with different configurations.

Most instrument functions are controllable through the remote serial interface. Connection is through the SERIAL connector (9 pin) on the rear panel. The interface type, RS232C or RS485, is configured through the Serial Config menu. With the RS485 protocol, you can set unique addresses for multiple units and control them all remotely.

Physical Dimensions

The dimensions of the television demodulator are length 1.8 inches (46 mm), width 8.1 inches (206 mm), and depth 17.3 inches (440 mm). In a 19 inch (483 mm) rack, it is a half rack wide by one rack unit high.

Options

You can purchase the television demodulator with several options and accessories. Table 1–1 lists the power cord options.

Table 1–1: Power cord identification

Plug configuration Normal usage Option number

North America 125V/15A Plug NEMA 5-15P

Europe 230 V

Standard

1–2

DS1000 Series User Manual

Table 1–1: Power cord identification (cont.)

Plug configuration Option numberNormal usage

Getting Started

United Kingdom 230 V

Australia 230 V

Standard Accessories

Your television demodulator includes the standard accessories listed below:

 Standard North American Power Cord (161-0066-00)  Two, 250 V, 1.6 A (1.6AT) replacement fuses (159-0366-00)

 User Manual (070-9858-XX), this manual

Optional Accessories

You can order the following rackmounting kits from Tektronix:  TVGF11A adapter mounts a single instrument in a standard

19-inch rack.

 TVGF13 adapter mounts two half-rack width instruments

side-by-side in a standard 19-inch rack. Use this adapter to mount DS1000 and VM100 series instruments side by side.

 TVGF14 adapter mounts two half-rack width instruments

vertically in a standard 19-inch rack. Use this adapter to mount DS1000 and VM100 series instruments with a 1700 series monitor .

DS1000 Series User Manual

1–3

Getting Started

Electrical Installation

Before proceeding with product installation, please read the Safety Summary at the front of this manual.

NOTE. Save the shipping carton and packing materials in case it becomes necessary to ship the television demodulator to a Tektronix Service Center for service or repair. Packaging instructions are on page C–1.

AC Power Source

The television demodulator operates from an AC source with a line voltage in the range 95 to 240 VAC and with a line frequency of 50 or 60 Hz.

The television demodulator is designed to operate from a single-phase power source having one of its current-carrying conductors at or near earth ground (the neutral conductor). Only the line conductor is fused for over-current protection.

Systems that have both current-carrying conductors live with respect to ground (such as phase-to-phase on multiphase systems) are not recommended as power sources. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.

Changing the Mains Voltage

The unit is designed to operate over the specified range (95 to 240 VAC) without the need for adjustment.

Power On Procedure

To power on the television demodulator, connect it to the AC power source. There is no power switch. See Figure 1–1. The power on sequence completes in about 10 seconds.

1–4

DS1000 Series User Manual

Getting Started

The television demodulator tests major circuits during power on and displays the following status messages:

ROM test RAM test

C test

System Initialization

When testing completes, the television demodulator displays the current RF setting.

Figure 1–1: Rear panel connectors

DS1000 Series User Manual

1–5

Getting Started

Mechanical Installation

The television demodulator requires no assembly. Please read the following sections before installing the television demodulator into a console or equipment rack. Figure 1–2 shows a sample connection in a system including a video monitor and an audio monitor .

NOTE. All qualification testing was performed with the factoryshipped cabinet installed. To guarantee compliance with specifications, operate the instrument only in the original cabinet.

Audio L & R

RF/Antenna

input

Video output

outputs

Figure 1–2: Typical system configuration

Video monitor

Audio monitor

1–6

DS1000 Series User Manual

Getting Started

Custom Installation

CAUTION. To avoid damage to the television demodulator, attach it to a shelf that is strong enough to hold its weight (4.8 lbs/2.2 kg).

For applications that require installation into consoles, the television demodulator can be mounted with the front moulding flush or protruding from the console. Always allow approximately 3 inches (7.6 cm) of rear panel clearance for cable and power cord connections.

Rackmount Information

The television demodulator is one half-rack wide and one rack unit high. It requires approximately 3 inches (7.6 cm) of rear panel clearance for the power cord and cable connections and 20 inches (50.8 cm) in front of the rack for installation and removal.

You can order the following rackmounting kits from Tektronix:  TVGF11A adapter mounts a single instrument in a standard

19-inch rack.

 TVGF13 adapter mounts two half-rack width instruments

side-by-side in a standard 19-inch rack. Use this adapter to mount DS1000 and VM100 series instruments side by side.

 TVGF14 adapter mounts two half-rack width instruments

vertically in a standard 19-inch rack. Use this adapter to mount DS1000 and VM100 series instruments with a 1700 series monitor .

DS1000 Series User Manual

1–7

Getting Started

Functional Check

To check that the television demodulator is operating correctly, perform the following procedures:

1. Connect the television demodulator to power and wait a few

seconds for the power-on tests and initialization. If these tests pass, the display will show the current frequency/channel setting.

2. Apply an RF signal feed from an appropriate television standard

for your model of television demodulator to the RF input. Use a 75 W coaxial cable. The RF source should match the current frequency/channel setting. If not, refer to the Operating Basics section for information on selecting a new frequency/channel.

3. Connect the video output (VIDEO O/P) either to a picture monitor,

waveform monitor, or other monitoring equipment. Ensure that this connection is terminated in 75 W.

4. Check for a valid video display and, if possible, a nominal 1 Vpp

signal level.

5. Connect the audio outputs (AUDIO OUT R and AUDIO OUT L)

to a suitable audio monitoring device. For example, use the Lindos LA102 Audio Measuring Set. Check for a nominal 0 dBm level.

6. Connect the IF output (45.75 IF on the DS1001 model or

38.9 MHz on the DS1002 and DS1003 models) to a 100 MHz oscilloscope terminated in 75 W.

7. Check for a modulated RF signal at 45.75 MHz.

8. Connect the 4.5 IF output (DS1001 model only) to a 100 MHz

oscilloscope terminated in 75 W.

9. Check for a nominal 700 mVpp (+48 dBmV) signal. This concludes the functional check. If your television demodulator

failed any check in this procedure, review your connections, terminations, and instrument settings. A continued failure may indicate the need for repair. Contact your service person or a Tektronix, Inc field office for assistance.

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Operating Basics

The DS1000 Series Television Demodulators are typically used as part of a system that includes video and audio measurement equipment, such as the Tektronix VM100 Series Automated Measurement Set. Typical equipment connections are described in the Functional Check procedure on page 1–8 and are shown in Figure 1–2 on page 1–6.

The television demodulator configuration system allows the store and recall of system settings through the use of programs (presets). All program settings are saved in the television demodulator non-volatile memory when the unit is turned off.

The following procedures use factory settings for the illustrations; your display will vary if you have changed the settings.

Functional Overview

This section describes the front-panel and rear-panel features and connectors.

Front Panel Features

This section describes the front panel controls, which are illustrated in Figure 2–1. All models have the same display and controls.

Figure 2–1: DS1000 series front panel

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Operating Basics

 Front Panel Display. The 2 line by 20 character liquid crystal

display (LCD) is used to present unit configuration and status information.

The LCD uses “supertwist” technology allowing a wide viewing angle.

The LCD is illuminated with an LED back light, which enables its use in areas with low light levels.

The display contrast is adjustable in the Configure menu, as described on page 3–12 in the Reference section.

 DISPLAY button. Use the display button to step through the

several display modes. Each press of the button steps to the next display mode. When the last display mode is reached, the next press of the display button returns to the first display mode.

 PROGRAM button. Use the program button to enter the program

selection mode.

 CONFIG button. Use the configuration button to modify unit

settings.

 UP and DOWN buttons (↑ and ↓). Use the up and down buttons to

scroll through the program set-up and program configuration items. When the unit status display is active, the up and down buttons can be used to temporarily change the current channel number.

 LEFT and RIGHT buttons (← and →). Use the left and right

buttons to make changes to program configuration items. When the unit status display is active, the left and right buttons can be used to temporarily change the current frequency.

 ENTER button (↵). Use the enter button to enter the required

configuration mode and to accept configuration changes.

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NTSC

PAL

Operating Basics

Rear Panel Connectors

This section describes the rear panel connectors, which are illustrated in Figure 2–2.

Figure 2–2: Rear-panel connectors for NTSC and PAL models

 Power Input Connector . Accepts the AC power cord assembly that

is shipped with the product.

 Fuse Holder. Provides a safety fuse for the AC mains input

(95–240 V operation). The fuse holder is located just above the AC power connector . Refer to Appendix C for fuse replacement instructions.

 Serial Connector. Provides a bidirectional serial connection for

remote control by a PC. The connector is a 9-pin, subminiature D-type. Serial communication using this connector complies with RS232 and RS485 standards. For instructions on selecting the RS232 or the RS485 interface, refer to Serial Configuration on page 3–8. For remote control commands and techniques, refer to Appendix B.

 QUAD O/P. Provides a quadrature video output with nominal

75 W impedance.

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Operating Basics

 VIDEO O/P. Provides a standard 1 volt video output with nominal

75 W impedance. The NTSC model has one output and the PAL models have two identical VIDEO O/P outputs. See Figure 2–2.

 4.5 MHz O/P. (NTSC only) Provides a buffered 4.5 MHz audio

subcarrier output with nominal 75 W impedance.

 IF O/P. Provides a buffered IF output of the full video vestigial

side band with all sound carriers (NTSC: 45.75 MHz, PAL: 38.9 MHz). The nominal impedance is 75 W. This output is available for re-modulation or monitoring (75 W terminated).

 RF Input (

+30 dBmV and a nominal 75 W impedance.

 AUDIO OUT (L). Provides a BTSC stereo left channel or mono

channel output for NTSC systems. For PAL systems, it provides a NICAM/FM audio output, left channel or language 1 dual mode.

 AUDIO OUT (R). Provides a BTSC stereo right channel or second

audio program (SAP) output for NTSC systems. For PAL systems, it provides a NICAM/FM audio output, right channel or language 2 dual mode.

). Provides RF signal input with a sensitivity of –20 to

Operating Procedures

This section describes how to correctly apply power to the television demodulator and how to operate the instrument.

Applying Power

1. Apply an appropriate mains power source to the television

demodulator through the supplied power cord. There is no power switch.

2–4

2. The front panel LCD briefly displays the starting self-test message

before starting the self-tests. Each of the self-tests displays a different test message. If any of the tests fail, a test failure message appears and the unit waits for you to press a button before it continues with the remaining tests.

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Operating Basics

Once the self-tests complete, the unit initializes itself, which takes about 1 second to perform if the internal non-volatile memory is valid.

If the memory has been corrupted or damaged, then the television demodulator will attempt to load factory default settings. This process takes 5 to 10 seconds. When the initialization sequence completes, the unit displays the current channel/frequency selection along with the RF signal strength.

Selecting Display Modes

To access the display modes for the television demodulator, press the DISPLAY button on the front panel. Each press of the display button accesses the next display mode. When you reach the last display mode, the next press of the display button returns the display to the first display mode. The following list describes the display modes in their order of appearance:

1. System Status.

After power on sequence completes, the display shows the current channel and frequency selection and the RF signal strength for the channel and frequency.

The channel number is taken from the frequency table you select. It may be either numeric or alphanumeric depending on its definition in the frequency table.

If the frequency does not correspond to a channel frequency in the current frequency table, then the channel number is replaced by asterisks.

The RF signal strength is displayed in the form of a bar graph and represents the signal strength for the current channel frequency. A weak signal (RF amplitude < 100 mV) is represented by 10 dashes ‘–’ on the bar graph. As the signal strength increases in amplitude,

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Operating Basics

the dashes are replaced by blocks ‘J’ from the left, until all dashes have been replaced (RF amplitude > 1 mV).

2. Audio Output Status.

The audio output display shows the current status of the audio signals on the XLR connectors located on the rear panel.

3. Program Set-up.

The program set-up display allows you to view the configuration of the current program (preset). The top line shows the active program number and the bottom lines shows the program items. Use the up and down buttons (↑ and ↓) to view the entire configuration by scrolling through the various program items. Refer to page 3–3 for a description of each item in the Program set up.

To change a Program, select the Program number here, then press the CONFIG button. Refer to Program Configuration on page 3–3 for further instructions.

4. NICAM Error Count (PAL systems only).

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Operating Basics

The error count gives the number of NICAM errors per 128 ms period. Three versions of the error count are displayed:

Av – Average error count shows the average number of errors over the last ten readings.

Pk – Peak error count shows peak errors and delays while the error count is less than the displayed peak error count.

Ph – Peak hold error count shows the maximum error count. It is updated if the latest error count exceeds the current peak hold error count.

All three error counts can be cleared by pressing the enter (↵) button when in the Nicam error count display mode.

5. Product title.

The product title display shows the product number, transmission standard and unit serial number .

6. Firmware revision.

The firmware revision display shows the firmware number and the revision number of firmware in the television demodulator . You will need this revision number when reporting problems in operation to Tektronix representatives.

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Operating Basics

7. T emperature status.

The temperature status display shows when the internal SAW filter reaches its normal operating temperature. The status is one of the following readouts:

 LOW. The television demodulator has not reached its normal

 NORMAL. The television demodulator has reached its normal

operating temperature.

 HIGH. The television demodulator has exceeded its recom-

mended operating temperature range.

Selecting a Program

The television demodulator can store and recall 20 different programs (presets) from non-volatile memory. Only one of the programs is active at a time. Use the PROGRAM button to select a program.

Pressing the PROGRAM button brings up the program selection display. The the first line displays the current active program number and the second line displays the program channel and frequency.

Use the up and down buttons (↑ and ↓) to select from the 20 stored programs.

2–8

As each program number appears, its program configuration becomes active. When you reach the required program number, pressing the display button exits the program selection mode. The selected

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Operating Basics

program becomes the active program and will be recalled the next time you power on the unit.

Adjusting the Current Program

You can temporarily adjust the channel number and frequency while in the system status display. Use the up and down buttons (↑ and ↓) to change the channel and the left and right buttons to change the frequency. The changes you make are temporary and will be lost when you select another display mode or remove the AC power .

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Operating Basics

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Reference

This section describes how to configure the television demodulator to fit your application.

Configuring Operation

The television demodulator has many configurable parameters which it stores in non-volatile memory. Use the Configuration menu to select items. Table 3–1 lists the configurable items in the sequence that they appear.

Changes to program items immediately change the operation of the television demodulator. This active control allows you to see the affects of a change without exiting the program configuration mode. If selected changes do not give the desired result, you can discard the changes by exiting the configuration mode using the ‘NO’ save option.

Refer to Appendix E for a list of factory default settings for all configurable items.

Table 3–1: Configure menu hierarchy

Configure menu

1 Program Frequency Table UHF, VHF, user defined

Selections Range

Channel Various Frequency NTSC: 55.25 to 801.25 MHz

PAL: 45.25 to 860.25 MHz ZCP Status On, Off ZCP Line Number NTSC: 10-20 (F1 & F2)

PAL: 6-16, 319-329 ZCP Position 0 to 4

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Reference

T able 3–1: Configure menu hierarchy (cont.)

Configure menu

Audio Preference NTSC: BTSC

Audio Input Select NTSC: Mono, Mono-SAP, Stereo, SAP

AFC Status On, Off Sound Trap On, Off Stereo Noise NTSC: 1–16 SAP Noise NTSC: 1–16

RangeSelections

PAL: NICAM, FM

PAL: Mono1, Mono2, Mono1-Mono2, Stereo

2 Frequency

Response

3 Contrast

Adjust

4 User Channel

Table

5 Serial Set-up Serial Mode RS232, RS485

Manual Frequency Response Adjust

Display Contrast Adjust

Channel (1–50) NTSC: 55.25 to 801.25 MHz

Unit Address 32 to 63 RTS/CTS Disabled, Enabled RS485 Termination Unterminated, Terminated

–10 to +10

Dark to Max brightness

PAL: 45.25 to 860.25 MHz

Quick Guide

To configure the television demodulator, follow these procedures:

1. Press the front panel CONFIG button to access the Configuration

menu.

3–2

2. Use the up and down buttons (↑ and ↓) to select a configuration

mode.

3. Press the enter button (↵) to enter the selected configuration mode.

DS1000 Series User Manual

4. Use the up and down buttons (↑ and ↓) to select a configuration item. Use the left and right buttons (← and →) to change the selected configuration item.

5. Press the CONFIG button after making the desired changes. If you have made no changes, then the Configuration menu returns. If you have made changes, then you are asked if you want to save the changes. Use the left and right buttons (← and →) to select either yes or no, then press the enter button (↵).

6. To exit the configuration mode, press the DISPLAY button.

Program Configuration

The Program selection in the Configure menu allows you to modify a Program. Before entering the Configure menu, you must select the Program number you wish to modify.

Reference

To modify a Program, press the Program button and use the up and down buttons (↑ and ↓) to choose the program number you wish to modify. Then press the CONFIG button to access the Configuration menu. The top level selection is Program. Press the enter button (↵) to enter the Program Config menu. Use the up and down buttons (↑ and ↓) to choose and change any of the following selections:

1. Frequency tables.

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Reference

The television demodulator contains a wide variety of frequency tables that list the channel assignments used in many countries. The channel assignments cover the standard television frequency spectrum.

You can select a frequency table using the FT item. Only one frequency table can be active for an individual program, but different programs can use different frequency tables. Appendix D includes a complete list of the frequency tables.

2. Channel.

Use the channel item (CH) to select a channel from the chosen frequency table. The channel frequency appears in brackets after the channel number . This channel selection and the following frequency selection interact. Changing either one will change the other .

3. Frequencies.

If the required frequency is not contained in any frequency table, you can manually set the frequency using the frequency item (Fv). The frequency range is 45.25 MHz to 860.25 MHz in 0.25 MHz steps.

If the selected frequency corresponds to a standard channel, then that channel number appears in parentheses. Otherwise, asterisks appear in place of the channel number . This frequency selection

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Reference

and the previous channel selection interact. Changing either one will change the other .

4. ZCP. The zero carrier pulse (ZCP) is a special feature of the television

demodulator. You configure the ZCP feature using the ZCP status, ZCP line, and ZCP position items.

The ZCP status item determines whether the ZCP signal is on or off.

ONOFF

The ZCP line setting determines on which video line the ZCP is active. For PAL systems the line number range is 6 to 16 and 319 – 329. For NTSC systems the line number range is 10 to 20 (F1) and 10 to 20 (F2).

The ZCP position item determines the start position of the ZCP on the chosen video line. The five position choices are 0 to 4.

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Reference

5. Audio Preference.

For NTSC systems, the audio preference is set to BTSC with no other options.

For PAL systems, the audio preference item determines which audio system has primary control. The choices are NICAM and FM. If the primary choice signal is not present, then the secondary choice takes control.

6. Audio Input Selection.

3–6

The audio input selection item allows control of the audio outputs on the rear panel. For PAL systems, the available choices are MONO1, MONO2, DUAL MONO and STEREO. For NTSC systems, the available choices are MONO, MONO/SAP, STEREO and SAP.

7. AFC.

ONOFF

The AFC selection, when enabled, sets the tuning system of the television demodulator to locate and lock to a frequency that drifts

DS1000 Series User Manual

Reference

or to a frequency that is between the standard 0.25MHz frequency steps. The AFC function is not normally required for broadcast signals and should be used with caution because of its limited range of 1 MHz about the video carrier frequency.

The options for the AFC item are either on or off.

8. Sound Trap.

ONOFF

The sound trap status item, when enabled, adds extra filtering to remove any sound element from the video signal. The options for the sound trap item are either on or off.

9. BTSC Stereo/SAP Noise Thresholds.

The BTSC Stereo and SAP noise threshold items are only present on NTSC systems and are used to switch stereo and SAP outputs off when the thresholds are reached. The range for both items is 1 to 16.

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Reference

Serial Configuration

The Serial Set–up selection in the Configure menu, allows you to set the communications parameters of the serial port on the rear-panel.

To modify the serial port setup, press the CONFIG button to access the Configure menu. Use the up and down buttons (↑ and ↓) to select SERIAL SET–UP. Press the enter button (↵) to enter the Config Serial

menu. Use the up and down buttons (↑ and ↓) to choose and change any of the following selections:

1. Serial Mode.

Sets the mode of the serial port to either RS232 or RS485. Refer to Serial Port Connection on page B–1 for connection information.

2. Unit Address.

3–8

Sets the RS485 serial mode address. A controlling terminal or PC uses this address to identify and control a particular instrument.

DS1000 Series User Manual

The RS485 communications protocol allows connection of multiple units to one host. Each device connected to the host must have a unique address. The range for the unit address is 32 to 63.

3. RS232 R TS/CTS status.

DISABLED ENABLED

Enables or disables hardware handshaking on the serial port when in the RS232 serial mode.

Reference

4. RS485 termination.

TERMINATEDUNTERMINATED

Enables or disables termination at the television demodulator in the RS485 serial mode. Enable termination when the television demodulator is the last device in a multi-drop system. Select unterminated when it is not the last device.

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Reference

Frequency Response Configuration

In the television demodulator system there are two levels of frequency response adjustment. The first is factory set and cannot be adjusted from the front panel. The second is the manual frequency response item which allows minor adjustments to the frequency response.

Use caution when changing the manual frequency response and do so only when connected to equipment that can measure the changes to frequency response.

The changes to frequency response affect only the current active frequency, which is shown on the top line of the frequency response configuration display. You can adjust several frequencies which are stored in the television demodulator non-volatile memory.

Due to memory limitations within the television demodulator, it is impractical to store frequency response adjustments for every possible frequency, so the adjustments are possible only for the range of frequencies listed in Table 3–2.

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T able 3–2: Frequency response adjustment bands

Low band Mid band High band

Reference

40.00 – 47.75 MHz

48.00 – 55.75 MHz

56.00 – 63.75 MHz

64.00 – 71.75 MHz

72.00 – 79.75 MHz

80.00 – 87.75 MHz

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88.00 – 95.75 MHz

96.00 – 103.75 MHz

104.00 – 111.75 MHz

112.00 – 119.75 MHz

120.00 – 127.75 MHz

128.00 – 135.75 MHz

136.00 – 143.75 MHz

170.00 – 179.75 MHz

180.00 – 189.75 MHz

190.00 – 199.75 MHz

200.00 – 209.75 MHz

210.00 – 219.75 MHz

220.00 – 229.75 MHz

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230.00 – 239.75 MHz

240.00 – 249.75 MHz

250.00 – 259.75 MHz

260.00 – 269.75 MHz

270.00 – 279.75 MHz

280.00 – 289.75 MHz

290.00 – 299.75 MHz

454.25 – 469.75 MHz

470.00 – 489.75 MHz

490.00 – 509.75 MHz

510.00 – 529.75 MHz

530.00 – 549.75 MHz

550.00 – 569.75 MHz

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570.00 – 589.75 MHz

590.00 – 609.75 MHz

610.00 – 629.75 MHz

630.00 – 649.75 MHz

650.00 – 669.75 MHz

670.00 – 689.75 MHz

690.00 – 709.75 MHz

144.00 – 151.75 MHz

БББББ

152.00 – 159.75 MHz

160.00 – 162.75 MHz

163.00 – 167.75 MHz

168.00 – 169.75 MHz

БББББÁБББББ

DS1000 Series User Manual

300.00 – 309.75 MHz

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310.00 – 319.75 MHz

320.00 – 329.75 MHz

330.00 – 339.75 MHz

340.00 – 349.75 MHz

350.00 – 359.75 MHz

360.00 – 369.75 MHz

370.00 – 379.75 MHz

380.00 – 389.75 MHz

390.00 – 399.75 MHz

400.00 – 409.75 MHz

710.00 – 729.75 MHz

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730.00 – 749.75 MHz

750.00 – 769.75 MHz

770.00 – 789.75 MHz

790.00 – 809.75 MHz

810.00 – 829.75 MHz

830.00 – 849.75 MHz

850.00 – 860.25 MHz

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3–1 1

Reference

T able 3–2: Frequency response adjustment bands (cont.)

Low band High bandMid band

Contrast Adjustment

The Contrast Adjust selection in the Configure menu, allows you to set the contrast of the front-panel LCD display.

410.00 – 419.75 MHz

420.00 – 429.75 MHz

430.00 – 439.75 MHz

440.00 – 454.00 MHz

To modify the contrast, press the CONFIG button to access the Configure menu. Use the up and down buttons (↑ and ↓) to select Contrast Adjust. Press the enter button (↵) to enter the Contrast Adjustment menu.

Use the left and right buttons (← and →) to set the contrast lower or higher as appropriate for the ambient light level. Press the enter button (↵) when you have finished.

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User Defined Channel Table

The User Channel Table selection in the Configure menu, allows you to store several custom channel and frequency combinations in the User Channel Table.

To create or modify the User Channel Table, press the CONFIG button to access the Configure menu. Use the up and down buttons (↑ and ↓) to select the User Channel Table. Press the enter button (↵) to enter the User Channel Table menu.

Reference

The television demodulator can store several custom channels and frequencies. You can select from channels 1 to 50 using the up and down arrow keys. Use the left and right arrow keys to set the new frequency for the channel. The channel frequency is saved when you either press the Config button or select another channel.

You select the User Defined channel table as you do other frequency and channel tables. Refer to Program Configuration on page 3–3 for instructions on selecting a frequency table.

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Reference

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Appendices

Appendix A: Performance Specifications

The instrument specifications listed in this section are either performance requirements or reference information.

Performance requirements are valid over an ambient temperature range of 5°C to 35°C, unless otherwise noted. Ensure that test equipment used to verify performance requirements is calibrated and working within its specified limits.

Reference information, marked RI, amplifies a performance requirement or provides useful information on other operating parameters.

This section contains the following specifications:

 Table A–1 Video specifications  Table A–2 Audio specifications  Table A–3 Electrical specifications – power requirements  Table A–4 Environmental characteristics  Table A–5 Physical characteristics  Table A–6 Certifications and compliances  Table A–7 Safety certification compliance  Table A–8 Safety standards

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A–1

Appendix A: Performance Specifications

Table A–1: Video specifications

Category Product Description

RF Tuning Range DS1001

DS1002/3

55.25 – 801.25 MHz

48.25 – 860.25 MHz (under range to 45.25 MHz)

IF Frequency

Visual

DS1001 DS1002/3

Aural

DS1001 DS1002

DS1003 IF Output All RF Sensitivity

All 0 to +30 dBmV

45.75 MHz

38.9 MHz

41.25 MHz

33.40 MHz, 33.16 MHz, 33.05 MHz (NICAM)

32.90 MHz, 32.35 MHz (NICAM) +51 dBmV/+111 dBV (typical), BNC

+60 to +90 dBmV Return Loss All > 6 dB Input Impedance All

75 , female F type connector Frequency stability All ±50 kHz Video signal to noise DS1001

DS1002/3

> 50 dB (NTC7-weighted)

> 50 dB (unified-weighted) Video outputs DS1001

DS1002/3

Quadrature output All

One BNC connector

Two BNC connectors

1 Vpp, 90° phase of video signal on BNC

connector

4.5 MHz Intercarrier output DS1001

DS1002/3

One BNC connector

None Differential Gain All < 1.5% Differential Phase All

±1.5° Chroma/Luma Delay All < 40 ns

Video signal to noise tested at +19 dBmV/+79 dBV.

A–2

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Table A–1: Video specifications (cont.)

Category DescriptionProduct

Appendix A: Performance Specifications

Frequency response DS1001

±0.7 dB, 100 kHz to 3.58 MHz (18°C to 26°C)

±1.0 dB, 100 kHz to 3.58 MHz (5°C to 35°C) ±2 dB, 3.58 MHz to 4.1 MHz (typical)

±0.7 dB, 100 kHz to 4.43 MHz (18°C to 26°C)

DS1002/3

±1.0 dB, 100 kHz to 4.43 MHz (5°C to 35°C) ±2 dB, 4.43 MHz to 5.0 MHz (typical)

Group Delay (Sound trap off)

DS1001 DS1002

± 50 ns, 100 kHz to 3.58 MHz (Referenced to system M/N) ± 60 ns, 100 kHz to 4.43 MHz (Referenced to system B/G General)

DS1003

± 60 ns, 100 kHz to 4.43 MHz

(Referenced to system I Flat) Luminance Bar Amp All < 2% typical Luminance Bar Tilt All < 3% typical 2T K Factor All < 2.5% typical Line Time Distortion All < 3% typical

Table A–2: Audio specifications

Category Product Description

Audio Outputs DS1001

2 XLR configurable (left/right, mono/SAP,

mono/mono)

DS1002/3

2 XLR configurable (auto switching FM or

NICAM, auto switching for mono, dual sound,

and stereo) Frequency Response All ±0.5 dB, 50 Hz to 12 kHz typical Total Harmonic Distortion Level All

Audio THD tested with a blackburst video signal.

All < 1% at 1 kHz

0 dBm across 600 

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Appendix A: Performance Specifications

T able A–3: Electrical specifications – power requirements

Category Description

Line Voltage Ranges 95 to 240 VAC ±10% Power Consumption 30 VA Maximum Line Frequency 50/60 Hz Fuse 1.6AT, 250 V (20 mm ceramic)

T able A–4: Environmental characteristics

Category Description

Operating Temperature Storing Temperature Operating Altitude 6500 ft maximum (2,000 m) Non-operating Altitude 50,000 ft maximum (15,000 m) Relative Humidity (maximum

operating)

5_ C to 35_ C –20_ C to 75_ C

80% for temperatures up to 31_ C, decreasing linearly to 50% at 40_ C

T able A–5: Physical characteristics

Category Description

Dimensions Height: 1.8 in (46 mm)

Width: 8.1 in (206 mm) Depth: 17.3 in (440 mm)

Weight Net Weight: 4.8 lbs (2.2 kg)

A–4

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Appendix A: Performance Specifications

T able A–6: Certifications and compliances

Appendix B: Remote Control

This appendix describes how to remotely control the television demodulator. This appendix provides the following information:

 Serial port connection  Programming model  Command syntax descriptions  Alphabetical list of commands

Serial Port Connection

CAUTION. Connecting or disconnecting cables while the television demodulator is powered on can result in damage to its input circuits.

The rear panel SERIAL connector allows remote control of the television demodulator using a PC controller. The connector is a 9-pin, subminiature D-type with female contacts. Table B–1 and Figure B–1 give the pin configuration for the SERIAL connector.

The SERIAL connector provides a configurable serial communications port. You can configure the serial port as either RS232 or RS485 using the Serial Configuration menu. Refer to page 3–8.

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B–1

Appendix B: Remote Control

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5 4 3 2 1

8 7 6

Figure B–1: Pin assignments for the SERIAL connector

T able B–1: Rear-panel SERIAL port connections

Pin Function Pin Function

1 RS485 B 6 Not Used 2 RS232 TxD 7 RS232 CTS 3 RS232 RxD 8 RS232 RTS 4 Not Used 9 RS485 A 5 Signal Ground

Before initiating remote control of the television demodulator, set the PC serial port as follows:

PC Serial Port Settings

Speed Protocol Interface

ÁÁÁÁ

9600 bps 1 start bit, 8 data bits, no parity, 1 stop bit RS485 or RS232 (match the television demodulator

ББББББББББББ

setting)

Handshaking RS232 only, use RTS/CTS hardware handshaking (match

the television demodulator setting)

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Programming Model

The television demodulator uses the BCP Simplified Communication Link protocol (SCL). With the SCL Protocol, you program a PC to send and receive data using standard I/O functions found in most programming languages, such as C, PASCAL, and BASIC.

The SCL protocol supports asynchronous binary communication, not text or ASCII based. Communication is based on 8-bit bytes ranging from 0 to 255. Table B–2 lists special byte codes used to coordinate data transfers between the PC and the television demodulator . For information on how to use these special byte codes, refer to Sending and Receiving Data on page B–5.

Table B–2: Special byte codes

Appendix B: Remote Control

Code mnemonic

STX ETX ENQ DLE ACKO WACK Ad

ÁÁÁ

Ar Ars Arr

ASCII Description

02 hex 03 hex 05 hex 10 hex 11 hex 3B hex 0F hex

ÁÁ

* Ar x 2 Ar x 2 + 1

Start of data End of data Enquiry Data link escape Device is ready Device is not ready Device address

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User-defined remote address Send remote address Receive remote address

Control characters

^B ^C ^E ^P ^Q ; ^O

ÁÁÁ

* You assign the remote address. For more information, refer to

Addresses on page B–3.

Addresses

The television demodulator has four addresses that are necessary for communication using the SCL protocol. Table B–2 lists the four addresses: Ad, Ar , Ars, and Arr. For information on using these

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Appendix B: Remote Control

addresses, refer to page B–5. The addresses perform the following functions:

 Device address (Ad) is set to 0F hex in all television demodulators.

The PC uses the device address to initiate communication with a television demodulator .

 Remote address (Ar) is unique for each television demodulator .

You set this unique address as a decimal number. To set the address, use the SERIAL SET–UP item in the configuration menu. The remote address is the base address used to determine the Ars and Arr addresses.

 Send remote address (Ars) is used to send data to the television

demodulator. Calculate Ars using the following equation:

Ars = Ar x 2

 Receive remote address (Arr) is used to receive data from the

television demodulator. Calculate Arr using the following equation:

Arr = Ar x 2 + 1

For example, if you set the remote address (Ar) to 50 decimal (32 hex), its SCL protocol addresses are as follows:

Ad (from Table B–2) = 0F hex Ars = (32 hex) x 2 = 64 hex Arr = (32 hex) x 2 + 1 = 65 hex

Remote Operation Flag

Some commands can be used only when the television demodulator is in the remote controlled state. When in remote control state, you cannot control the television demodulator from the front panel. The front panel display indicates the remote control state with the message “REMOTE CONTROLLED”

Two commands control the state of the remote flag. Use the command PWD= to enter the remote control state and set the remote flag to true (1). Use the DISC= command to resume front panel control and set the remote flag to false (0). Use the LOG? query to get the current state of the remote flag.

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Command Types

There are two types of commands.  Select commands end with an equal sign (=), such as “PRESET=”.

Select commands set the television demodulator to operate in any mode allowed from the front panel.

 Query commands end with a question mark (?), such as “PRE-

SET?”. Query commands tell the television demodulator to prepare to send a particular type of data to the PC.

Commands may be followed by one or more parameters specific to the command. Parameters are in binary format. Query commands often do not require parameters. The response data from a query command may contain several parameters.

For information on the syntax used for command definitions, refer to page B–11. The alphabetical list of commands and their parameters begins on page B–13.

Sending and Receiving Data

The PC must send commands and addresses in a certain order when writing data to and reading data from the television demodulator. The main steps in the communications process are as follows:

1. Send the identifying addresses.

2. Detect readiness of the television demodulator .

3. Send command and parameters.

4. Receive response/data.

Several types of communications are possible. Each type has a pattern of commands or phases that must be used. The following discussions introduce these communication phases: send address, send data, receive address, poll for messages, and get messages.

Send Address Phase

The PC uses Ad and Ars to address a particular television demodulator . The television demodulator configured with a matching address answers with either a ready response or a not ready response. Sending

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this address data aborts all other communication on the bus. The following three cases show variations of the send address phase.

The PC addresses a television demodulator that is not ready to receive data:

      Addressing phase     Not ready response

The PC addresses a television demodulator that is ready, and the PC sends data:

      Addressing phase       Ready response        Data phase

The PC addresses a television demodulator that is not ready, ignores the not ready response, and sends data:

      Addressing phase    Aborted ready response        Data phase

The PC can ignore the not-ready response and transmit the addressing phase and data phase sequentially. In this case, the television demodulator aborts the not ready response after receiving the first byte of the data phase. The PC receives only a DLE character .

When sending data, Ad and Ars can be replaced by FF hex, a broadcast address. When the television demodulator sends a ready response, it will send its real address. You can use this broadcast address to determine the address of a television demodulator . The wild card remote address is always a send address phase.

Send Data Phase

The send data phase begins with a command and may be followed by one or more parameters specific to the command. Two techniques for sending data are possible.

B–6

The PC addresses a television demodulator that is ready and sends data:

      Addressing phase

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Appendix B: Remote Control

      Ready response        Data phase

The PC addresses a television demodulator that is not ready, ignores the not ready response, and sends data:

If the byte 10 hex is part of the data, this byte is sent twice so that it is not confused with DLE ETX (10 hex), which ends the data phase.

Receive Address Phase

To acquire data from the television demodulator, the PC first sends the Ad and Arr addresses to identify the television demodulator. This address phase aborts other communication on the same bus. The television demodulator responds with a not ready phase if it does not have the requested data. It responds with a ready phase followed by a data phase when it has data. The receive data phase contains the Ad and Arr addresses to identify the responding television demodulator .

Examples of receive communication between the PC and the television demodulator follows with descriptions in italics.

The PC addresses a television demodulator that has no data available:

      Addressing phase     Not Ready response

The PC addresses a television demodulator that has data available, and the television demodulator returns the data:

      Addressing phase

  

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Ready response and data phase

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Appendix B: Remote Control

If the byte 10 hex is part of the data, this byte is sent twice so that it is not confused with DLE ETX (10 hex), which ends the data phase.

Polling for Status Messages

If a television demodulator has a message, it does not send it to the PC, because more than one television demodulator can be connected to the same remote interface bus. To avoid data contention, the PC uses polling to check for messages.

Polling is done with the PATH? command. PATH? returns an empty string if the television demodulator has no message, and returns the path if a message is available. The path contains the addresses Ad and Ars (see Addresses on page B–3).

The following example is one continuous polling communication between the PC and the television demodulator . The values for Ad, Ars, and Arr can be calculated according to instructions on page B–3.

The PC addresses a television demodulator that is busy, repeats the addressing phase until the television demodulator returns a ready phase, then the PC sends the “PATH?” command.

PC > [DLE] [ENQ] [Ad] [Ars] Send Addr essing phase DS1000 >[DLE] [WACK] Not Ready response PC > [DLE] [ENQ] [Ad] [Ars] Send Addr essing phase DS1000 > [DLE] [ACKO] [Ad] [Ars] Ready response PC > [DLE] [STX] ['PATH?'] [DLE] [ETX] Data phase

After receiving the PATH? command, the television demodulator places its answer in its transmit buffer. The PC tries to retrieve the message with a receive cycle, but the television demodulator has not processed the answer yet.

PC > [DLE] [ENQ] [Ad] [Arr] Receive Addressing phase DS1000 > [DLE] [WACK] Not Ready phase

The PC repeats the addressing phase until the television demodulator is ready and transmits its data phase. There is no data included, because the television demodulator has no message.

B–8

PC > [DLE] [ENQ] [Ad] [Arr] Receive Addressing phase

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Appendix B: Remote Control

DS1000 > [DLE] [STX] [Ad] [Arr] [DLE] [ETX]

Data phase

The PC continuously polls the television demodulator .

PC > [DLE] [ENQ] [Ad] [Ars] Send Addr essing phase DS1000 > [DLE] [ACKO] [Ad] [Ars] Ready phase PC > [DLE] [STX] ['PATH?'] [DLE] [ETX] Data phase PC > [DLE] [ENQ] [Ad] [Arr] Receive Addressing phase

The television demodulator responds with data when it has a message. The [data] is the path, Ad Ars, which indicates that a message is available from the responding television demodulator .

DS1000 >[DLE] [STX] [Ad] [Arr] [data] [DLE] [ETX]

Data phase

Getting a Message

Polling a television demodulator only tells the PC if a message is available. To receive the message, you must use the MSG? command.

The following example shows how to use the MSG? command to retrieve a status message from a television demodulator .

The PC addresses a television demodulator that is busy and repeats the addressing phase until the television demodulator returns a ready phase. The PC then sends the “MSG?” command.

PC >[DLE] [ENQ] [Ad] [Ars] Send Addressing phase DS1000 > [DLE] [ACKO] [Ad] [Ars] Ready phase PC > [DLE] [STX] ['MSG?'] [DLE] [ETX] Data phase

After receiving the MSG? command, the television demodulator places its answer in its transmit buffer , and the PC retrieves the message with a receive phase. The data in this example (20h) is the test message. Other bit patterns are listed with the MSG? command.

PC > [DLE] [ENQ] [Ad] [Arr] Receiving addressing phase

DS1000 > [DLE] [STX] [Ad] [Arr] [20h] [DLE] [ETX]

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Data phase

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Appendix B: Remote Control

The PC acknowledges the data by sending the MSG= command followed by the data bit pattern. The PC resumes polling, but clears the message data as it reads the message.

PC > [DLE] [ENQ] [Ad] [Ars] Send addressing phase DS1000 > [DLE] [ACKO] [Ad] [Ars] Ready phase PC > [DLE] [STX] ['MSG='] [20h] [DLE] [ETX] Data phase

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Command Syntax

The command descriptions follow a consistent format. The elements of that format are discussed here.

Description. Gives the function of the command, conditions of its use,

and its interactions with other commands.

Syntax. Gives the valid select and query command forms. The required

arguments are listed in their proper order. For example, in the syntax definition

 

the arguments <Ad> and <Ars> are required in the order indicated.

Arguments. The arguments to a command are defined along with their

range of values.

Appendix B: Remote Control

Returns. Defines the data returned in response to a command query .

Data Types

Data sent with a command or received from a query may be of the types listed in Table B–3.

Table B–3: Data types used in remote communication

Data type Description

byte 8 bits, ordered highest to lowest (b7, b6, b5, b4, b3, b2,

b1, b0). word 16 bits, sent as 2 bytes, with the MSB first. character (char) Transferred as a single byte, representing an ASCII

character. Char(10) would indicate a string containing

10 characters, such as ‘ABCDEFGHIJ’. Boolean 0 or 1, representing an off or on state. bitmap A string of bits with a definite length, where each bit

represents the state of a parameter.

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Appendix B: Remote Control

Data Offset

The offset is the relative position of a data item in the transmitted or received data. The first bit in a data transfer is number 1, so the first byte has an offset of 1.

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Remote Command Descriptions

The following remote commands appear in alphabetical order .

AFC

Sets or requests the current AFC status. The television demodulator must be in the remote state to use this command.

Syntax

AFC= AFC?

Arguments

Examples

<afc_state> Either 0 for off or 1 for on.

Command Result

 

AFC control is set to on.

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AUD_OUT

Selects or requests the audio output mode. The television demodulator must be in the remote state to use this command.

Syntax

AUD_OUT= <aud_val> AUD_OUT? <aud_status>

Arguments

Examples

Argument

<aud_val> byte Left/Right (PAL) Left/Right (NTSC)

<aud_status> byte 0: Mute

Command Result

Format Description

0: Mono1/Mono1 Mono/Mono 1: Mono2/Mono2 Mono/SAP 2: Mono1/Mono2 Stereo/Stereo 3: Stereo/Stereo SAP/SAP

1: FM/Nicam Mono1 2: FM/Nicam Mono2 3: FM/Nicam Mono1/Mono2 4: Stereo 5: BTSC SAP 6: BTSC Mono 7: BTSC Mono/SAP 8: BTSC Mono/Mute

B–14

 

Audio output mode set to dual mono for PAL systems, or stereo for NTSC systems.

DS1000 Series User Manual

AUD_PREF

Sets or requests the current audio control preference if both FM and NICAM signals are present. The television demodulator must be in the remote state to use this command.

Syntax

AUD_PREF= <ap_state> AUD_PREF?

Arguments

<ap_state> is either 0 for FM or 1 for NICAM.

Examples

Appendix B: Remote Control

Command Result

 

Audio preference is set to NICAM.

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BTSC

Sets or requests the stereo and SAP noise threshold for the BTSC controller. The television demodulator must be in the remote state to use this command.

Syntax

BTSC= <stnt_val><sapnt_val> BTSC?

Arguments

Byte offset

Argument Format Description

Examples

1 <stnt_val> byte Sets the stereo noise threshold in the

BTSC controller. Range is 0 to 15.

2 <sapnt_val> byte Sets the SAP noise threshold in the

BTSC controller. Range is 0 to 15

Command Result

  

BTSC stereo noise threshold set to level 10. BTSC SAP noise threshold set to level 7.

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CHANNEL

Sets or requests the selected channel record number and frequency table of the television demodulator . Sending the CHANNEL= command automatically sets the tuning mode to CHANNEL. The television demodulator must be in the remote state to use this command. For the query command, set TUNING to mode 0.

Syntax

CHANNEL=<table><channel_rec> CHANNEL?

Arguments

Appendix B: Remote Control

Byte offset

1 <table> Selects the table of channels from one of the following:

2 <chan-

Argument

nel_rec>

Description

NTSC:

0: User defined table 1: CATV HRC 2: CATV IRC 3: CATV STD 4: STDOFST 5: IRC 6: HRC 7: B’CAST

Selects the record number in the selected table. The table record number corresponds to a particular channel number. Refer to Appendix D for the record number associated with each channel number in the selected table.

PAL:

0: User defined table 1: UHF EUROPA 2: UHF CHINA 3: VHF EUROPA 4: VHF FRANCE 5: VHF ITALY 6: VHF AUSTRALIA 7: VHF CHINA 8: VHF IRELAND 9: VHF N. ZEALAND 10: VHF S. AFRICA 1 1: VHF OIRT 12: VHF CCIR

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Examples

Command Result

DISC

Syntax

Arguments

 

Puts the television demodulator in the local state, which enables the front panel controls and clears the remote flag. Use the command PWD to enter the remote state and set the remote flag.

DISC=

none

NTSC: Table 1, CATV HRC frequency table is selected. Channel record 18 selected = channel number 19

PAL: UHF EUROPA frequency table selected. Channel record 18 selected = channel number 39

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FREQ

Syntax

Arguments

Appendix B: Remote Control

Sets or requests the demodulation frequency. Setting the frequency automatically sets the tuning mode to FREQ TUNE. See the command description for TUNING. The television demodulator must be in the remote state to use this command.

FREQ= <freqH_val><freqL_val> FREQ?

Byte offset

Argument Format Description

Examples

1 <freqH_val> word:

[x yyy]

3 <freqL_val> word:

[x yyy]

Command Result

   

freqH: [1 100] = 1x256+100 = 356 MHz freqL: [0 250] = 250 kHz

The frequency set is 356.25 MHz.

Sets the integer part of the frequency in MHz. X = frequency in MHz/256. YYY = frequency in MHz – (x * 256). The range is 45 to 860.

Sets the fractional part of the frequency in kHz. X = frequency in kHz/256. YYY = frequency in kHz – (x * 256). The range is 0 to 999.

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Appendix B: Remote Control

IDN

Sets or requests the television demodulator identification. The query returns the device name (‘DS1001’) followed by the software version number (‘V01.00’ ), and a defined name <unit_loc>. You can assign a device name with IDN= <unit_loc>. The television demodulator must be in the remote state to use this command.

Syntax

IDN= <unit_loc> IDN?<device> <version><unit_loc>

Arguments

<unit_loc> up to 20 characters <device> <version><unit_loc>

Returns

Examples

Byte offset

1 <device> Char(10) Model (‘DS1001’) 11 <version> Char(6) Software version (‘V01.00’) 17 <unit_loc> Char(20) Custom name (‘DEMOD2’)

Command Result

  

Argument Format Description

The model is DS1001, the software is version 1.00 and the custom name is DEMOD2.

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LOG? (Query only)

Requests the remote state of the television demodulator. Use the command PWD to start remote operation and DISC to return to local operation.

Syntax

LOG?

Arguments

<remote flag> 0 for local control, 1 for remote

Returns

Appendix B: Remote Control

Examples

MSG

Syntax



0 The television demodulator is in the local state.

Clears or requests the status of the television demodulator . The MSG? command causes the television demodulator to place any messages in its transmit buffer. Use a receive phase to return the message. The television demodulator can be polled continuously; see page B–8.

MSG= clears the message bit(s) matching the true bits in the message byte <state>. The television demodulator must be in the remote state to use the MSG= command.

MSG=<state> MSG?

Arguments

<state> is 1h to FFh. FFh clears all message bits.

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Returns

Bitmap of <state> Description of True state (1)

b7: Invalid remote command Television demodulator received an invalid

b6: Wrong remote parameter Television demodulator received the wrong

b0 – b5: Not used

Examples



128 decimal which equals 80h or 10000000b. This message indicates an invalid command.

command

parameter

MSG_C

Syntax

Arguments

Examples

Enables or disables message generation in the television demodulator . Setting MSG_C from 1 to 0 clears all pending messages. The television demodulator must be in the remote state to use this command.

MSG_C= <msg_state> MSG_C?

<msg_state> one byte, either 1 to enable messages or 0 to disable them.

Command Result

 

The television demodulator may now generate messages.

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PATH

Syntax

Appendix B: Remote Control

Polls the television demodulator to check for status messages. The television demodulator returns its <Ad><Ads> addresses when there is a message and a null string when there are no messages. Use the MSG? command to get the actual status message. If the messages are disabled with the MSG_C command, the television demodulator will not have a message.

For more information on using the PATH command for polling, refer to page B–8.

PA TH= <Ad><Ars> PA TH?

Returns

Examples

Device address Description

<Ad> Device address, always [0F hex] for the television

demodulator. <Ars> Remote address, calculated on page B–3.

Command Result



The television demodulator has a message and is ready to

send it. The <Ad><Ars> addresses are contained in the

<data> returned.

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Appendix B: Remote Control

PRESET

Sets or requests the settings for one of the 20 programs without affecting the present operation of the television demodulator. Use the RECPRT command to activate a preset program number. The television demodulator must be in the remote state to use this command.

Syntax

PRESET=<pres_nr><settings_data> PRESET?

Arguments

<press_nr> is the program number to set or query. Range 1–20. <settings_data> Refer to the SETT command for a definition of these parameters.

Examples

PWD

Syntax

Arguments

Command Result

 

Puts the television demodulator in the remote state and sets the remote flag. The front panel is disabled when in the remote state. Use the command DISC to enter the local state and clear the remote flag.

PWD=

none

<settings_data> Returns the program data for number 10.

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RECPRT

Selects and makes active the current program (preset) or requests the current number . The data in <prog_nr> becomes the current setting of the television demodulator. This command sets the tuning mode to PROGRAM. This command is allowed only when the remote flag is true and when TUNING = 4, indicating the PROGRAM mode.

Syntax

RECPRT= <prog_nr> RECPRT?

Arguments

<prog_nr> one byte in the range 1 to 20 to indicate the program number.

Appendix B: Remote Control

Examples

Command Result



The program number 12 is the current active program.

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REPORT? (Query only)

Requests the operating state of the television demodulator. The response is 0 when an active input signal is detected and 2 when no signal is detected. The television demodulator must be in the remote state to use this command.

Syntax

REPORT? <tic_state>

Arguments

<tic_state> one byte, either 0 to indicate an active signal, or 2 to indicate no input signal.

Examples

SETT

Syntax

Command Result



Sets or requests several operating parameters of the television demodulator. With the SETT command, you can set several parameters at once instead of using several different commands. SETT can replace the following commands: FREQ, AFC, AUD_PREF, STRAP, ZCP, BTSC and AUD_OUT. The new settings are ef fective immediately. The television demodulator must be in the remote state to use this command.

SETT=<settings_data> SETT?

2 The television demodulator does not detect a signal.

Arguments

B–26

<setting_data>

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Appendix B: Remote Control

Byte offset

1–2 freqH_val 45 to 860 FREQ 3–4 freqL_val 0 to 999 FREQ

Setting Range Command/desc

5 status_flags bitmap status

byte

Audio mode, bits b4 & b5: B4 B5 PAL mode NTSC mode 0 0 mono1 mono 1 0 mono2 mono/SAP 0 1 mono1/mono2 stereo 1 1 stereo SAP

6–7 ZCP line num-

ber

0 to 21 ZCP

Set the bit true (1) to enable the associated function: b7: x b6: ZCP control b5: audio mode selection bit 1 b4: audio mode selection bit 0 b3: audio preference NICAM b2: Sound trap control b1: AFC control b0: off–channel frequency

8 ZCP position 0 to 4 ZCP 9 BTSC stereo

noise

10 BTSC SAP

noise

Examples

Command Result



DS1000 Series User Manual

0 to 15 BTSC

Returns the current settings of the television demodulator.

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Appendix B: Remote Control

STRAP

Sets or requests the status of the sound trap. The television demodulator must be in the remote state to use this command.

Syntax

STRAP= <strap_state> STRAP?

Arguments

<strap_state> Either 1 for On or 0 for Off.

Examples

Command Result

 

Sound trap is on.

B–28

DS1000 Series User Manual

TUNING

Syntax

Arguments

Appendix B: Remote Control

Sets or requests the tuning mode. The tuning mode can be by channel, frequency, or from a programmed (preset) setting. The television demodulator must be in the remote state to use this command.

TUNING=<tune_mode> TUNING?

<tune_mode> may be set to any of three modes:  0, Channel tuning, allows tuning by channel number .

Examples

 3, Frequency tuning, allows tuning by frequency in network

standard increments.

 4, Programmed tuning, allows tuning by loading a stored preset.

Command Result



4: Returned data of [4] means television demodulator is in

program (preset) mode.

DS1000 Series User Manual

B–29

Appendix B: Remote Control

ZCP

Sets or requests the status of the zero carrier pulse (ZCP). The television demodulator must be in the remote state to use this command.

Syntax

ZCP= <zcp_state><zcp_line_no><zcp_position> ZCP?

Arguments

Byte offset

Arguments Range

Examples

1 <zcp_state> 0 for Off, 1 for On 2–3 <zcp_line_no> Sets the line number on which the ZCP is

activated. The range is 0 to 20. The <zcp_line_no> translates to an actual video line number as follows:

Line No. 0–10: 11–21:

4 <zcp_position> ZCP position on the selected line. Range is 0 to 4.

Command Result

   

NTSC: ZCP is active on line 12 (field 2) in position 1.

PAL: ZCP is activate on line 321 in position 1.

PAL 6–16 319–329

NTSC 10–20 (Field 1) 10–20 (Field 2)

B–30

DS1000 Series User Manual

Appendix C: Service

WARNING. To avoid personal injury or damage to the unit, be sure that the power is not supplied to the television demodulator while performing the procedures in this section.

This section contains instructions for user service and preventative maintenance. The only serviceable part is the fuse, which is available on the rear panel.

There are no user serviceable parts within the unit. Please return it to a Tektronix Service Center for service and calibration.

Packaging for Shipment

If it becomes necessary to ship the television demodulator to a Tektronix Service Center, follow these instructions:

1. Write the following on a tag attached to the product: the product

owner, complete address and phone number of someone at your firm who can be contacted, the product serial number, and a description of the required service.

2. Package the product in the original packaging materials. If they are

not available, follow these directions:

a. Obtain a carton of corrugated cardboard having inside

dimensions at least 6 in (150 mm) greater than the dimensions of the instrument.

b. Surround the product with a protective bag (anti-static

preferred).

c. Pack dunnage or urethane foam between the product and

the carton. If you use Styrofoam kernels, overfill the box and compress by closing the lid. There should be 3 inches (75 mm) of tightly packed cushioning on all sides of the instrument.

3. Seal the carton with shipping tape, an industrial stapler, or both.

DS1000 Series User Manual

C–1

Appendix C: Service

Replacing the Fuse

1. Disconnect the power cable from the television demodulator rear

panel.

2. Remove the fuse holder by inserting a suitable instrument on either

side of the holder and pulling straight out.

3. Remove the old fuse and replace it with a new fuse of the same

type. Use only 250 V, 1.6 A time-delayed fuses.

4. Replace the fuse holder ensuring that the holder clicks back into its

socket.

Cleaning the Exterior

The instrument should be cleaned often enough to prevent dust and dirt from accumulating. Dirt acts as a thermal insulator, preventing effective heat dissipation and providing high-resistance electrical leakage paths between conductors or components in a humid environment.

CAUTION. To avoid damaging the unit, do not allow water to get inside any enclosed assembly or component. Do not clean any plastic materials with benzene, toluene, xylene, acetone, or similar solvents, because they may damage the plastic.

Clean the dust from the outside of the instrument with a soft, dry cloth or small brush. A brush is especially useful for removing dust from around the buttons and connectors.

C–2

DS1000 Series User Manual

Appendix D: Channel Tables

ÁÁÁÁ

This section contains the frequency and channel tables used by the television demodulator system. When manually selecting a channel, the television demodulator displays the channel name and number . When selecting a channel using the remote serial commands, the channel record number provides access to the channels.

T able Name Standard Channels Page

D–1 D–2 D–3 D–4 D–5 D–6 D–7 D–8 D–9 D–10 D–11 D–12 D–13 D–14

CATV HRC channel table CATV IRC channel table CATV Standard channel table Standard channel table IRC channel table HRC channel table Broadcast channel table UHF Europa channel table UHF China channel table VHF Europa channel table VHF France channel table VHF Italy channel table VHF Australia channel table VHF China channel table

NTSC NTSC NTSC NTSC NTSC NTSC NTSC PAL PAL PAL PAL PAL PAL PAL

99 98 124 124 99 99 68 49 44 55 10 10 13 12

D–2 D–3 D–5 D–7 D–9 D–10 D–12 D–13 D–14 D–15 D–16 D–16 D–16 D–17

D–15

ÁÁ

D–16 D–17 D–18 D–19

VHF Ireland channel table

ББББББББ

VHF New Zealand channel table VHF South Africa channel table VHF OIRT channel table VHF CCIR channel table

DS1000 Series User Manual

PAL

ÁÁÁ

PAL PAL PAL PAL

ÁÁ

11 9 12 11

D–17

ÁÁ

D–17 D–18 D–18 D–18

D–1

Appendix D: Channel Tables

Table D–1: CATV HRC channel table

Rec Chan Freq No. No. (MHz)

0 1 72.00 1 2 54.00 2 3 60.00 3 4 66.00 4 5 78.00 5 6 84.00 6 7 174.00 7 8 180.00 8 9 186.00 9 10 192.00 10 11 198.00 1 1 12 204.00

Rec Chan Freq No. No. (MHz)

25 26 234.00 26 27 240.00 27 28 246.00 28 29 252.00 29 30 258.00 30 31 264.00 31 32 270.00 32 33 276.00 33 34 282.00 34 35 288.00 35 36 294.00 36 37 300.00

Rec Chan Freq No. No. (MHz)

50 51 384.00 51 52 390.00 52 53 396.00 53 54 402.00 54 55 408.00 55 56 414.00 56 57 420.00 57 58 426.00 58 59 432.00 59 60 438.00 60 61 444.00

61 62 450.00 12 13 210.00 13 14 120.00 14 15 126.00 15 16 132.00 16 17 138.00 17 18 144.00 18 19 150.00 19 20 156.00 20 21 162.00 21 22 168.00 22 23 216.00 23 24 222.00 24 25 228.00

37 38 306.00 38 39 312.00 39 40 318.00 40 41 324.00 41 42 330.00 42 43 336.00 43 44 342.00 44 45 348.00 45 46 354.00 46 47 360.00 47 48 366.00 48 49 372.00 49 50 378.00

62 63 456.00

63 64 462.00

64 65 468.00

65 66 474.00

66 67 480.00

67 68 486.00

68 69 492.00

69 70 498.00

70 71 504.00

71 72 510.00

72 73 516.00

73 74 522.00

74 75 528.00

D–2

DS1000 Series User Manual

Table D–1: CATV HRC channel table (cont.)

Appendix D: Channel Tables

Rec Chan Freq No. No. (MHz)

75 76 534.00 76 77 540.00 77 78 546.00 78 79 552.00 79 80 558.00 80 81 564.00 81 82 570.00 82 83 576.00

Rec Chan Freq No. No. (MHz)

83 84 582.00 84 85 588.00 85 86 594.00 86 87 600.00 87 88 606.00 88 89 612.00 89 90 618.00 90 91 624.00

Table D–2: CA TV IRC channel table

Rec Chan Freq No. No. (MHz)

91 92 630.00 92 93 636.00 93 94 642.00 94 95 90.00 95 96 96.00 96 97 102.00 97 98 108.00 98 99 114.00

Rec Chan Freq No. No. (MHz)

0 2 55.25 1 3 61.25 2 4 67.25 3 5 79.25 4 6 85.25 5 7 175.25 6 8 181.25 7 9 187.25 8 10 193.25 9 11 199.25 10 12 205.25 1 1 13 211.25

12 14 121.25 13 15 127.25 14 16 133.25 15 17 139.25 16 18 145.25 17 19 151.25 18 20 157.25 19 21 163.25 20 22 169.25 21 23 217.25 22 24 223.25 23 25 229.25

24 26 235.25 25 27 241.25 26 28 247.25 27 29 253.25 28 30 259.25 29 31 265.25 30 32 271.25 31 33 277.25 32 34 283.25 33 35 289.25 34 36 295.25 35 37 301.25

DS1000 Series User Manual

D–3

Appendix D: Channel Tables

Table D–2: CATV IRC channel table (cont.)

Rec Chan Freq No. No. (MHz)

36 38 307.25 37 39 313.25 38 40 319.25 39 41 325.25 40 42 331.25 41 43 337.25 42 44 343.25 43 45 349.25 44 46 355.25 45 47 361.25 46 48 367.25 47 49 373.25

Rec Chan Freq No. No. (MHz)

57 59 433.25 58 60 439.25 59 61 445.25 60 62 451.25 61 63 457.25 62 64 463.25 63 65 469.25 64 66 475.25 65 67 481.25 66 68 487.25 67 69 493.25 68 70 499.25

Rec Chan Freq

No. No. (MHz)

78 80 559.25

79 81 565.25

80 82 571.25

81 83 577.25

82 84 583.25

83 85 589.25

84 86 595.25

85 87 601.25

86 88 607.25

87 89 613.25

88 90 619.25

89 91 625.25 48 50 379.25 49 51 385.25 50 52 391.25 51 53 397.25 52 54 403.25 53 55 409.25 54 56 415.25 55 57 421.25 56 58 427.25

69 71 505.25 70 72 511.25 71 73 517.25 72 74 523.25 73 75 529.25 74 76 535.25 75 77 541.25 76 78 547.25 77 79 553.25

90 92 631.25

91 93 637.25

92 94 643.25

93 95 91.25

94 96 97.25

95 97 103.25

96 98 109.25

97 99 115.25

D–4

DS1000 Series User Manual

T able D–3: CATV standard channel table

Appendix D: Channel Tables

Rec Chan Freq No. No. (MHz)

0 2 55.25 1 3 61.25 2 4 67.25 3 5 77.25 4 6 83.25 5 7 175.25 6 8 181.25 7 9 187.25 8 10 193.25 9 11 199.25 10 12 205.25 1 1 13 21 1.25

Rec Chan Freq No. No. (MHz)

25 27 241.25 26 28 247.25 27 29 253.25 28 30 259.25 29 31 265.25 30 32 271.25 31 33 277.25 32 34 283.25 33 35 289.25 34 36 295.25 35 37 301.25 36 38 307.25

Rec Chan Freq No. No. (MHz)

50 52 391.25 51 53 397.25 52 54 403.25 53 55 409.25 54 56 415.25 55 57 421.25 56 58 427.25 57 59 433.25 58 60 439.25 59 61 445.25 60 62 451.25

61 63 457.25 12 14 121.25 13 15 127.25 14 16 133.25 15 17 139.25 16 18 145.25 17 19 151.25 18 20 157.25 19 21 163.25 20 22 169.25 21 23 217.25 22 24 223.25 23 25 229.25 24 26 235.25

37 39 313.25 38 40 319.25 39 41 325.25 40 42 331.25 41 43 337.25 42 44 343.25 43 45 349.25 44 46 355.25 45 47 361.25 46 48 367.25 47 49 373.25 48 50 379.25 49 51 385.25

62 64 463.25

63 65 469.25

64 66 475.25

65 67 481.25

66 68 487.25

67 69 493.25

68 70 499.25

69 71 505.25

70 72 511.25

71 73 517.25

72 74 523.25

73 75 529.25

74 76 535.25

DS1000 Series User Manual

D–5

Appendix D: Channel Tables

T able D–3: CATV standard channel table (cont.)

Rec Chan Freq No. No. (MHz)

75 77 541.25 76 78 547.25 77 79 553.25 78 80 559.25 79 81 565.25 80 82 571.25 81 83 577.25 82 84 583.25 83 85 589.25 84 86 595.25 85 87 601.25 86 88 607.25 87 89 613.25 88 90 619.25 89 91 625.25

Rec Chan Freq No. No. (MHz)

92 94 643.25 93 95 91.25 94 96 97.25 95 97 103.25 96 98 109.25 97 99 115.25 98 100 649.25 99 101 655.25 100 102 661.25 101 103 667.25 102 104 673.25 103 105 679.25 104 106 685.25 105 107 691.25 106 108 697.25

Rec Chan Freq No. No. (MHz)

109 111 715.25 1 10 112 721.25 1 11 113 727.25 1 12 114 733.25 1 13 115 739.25 1 14 116 745.25 1 15 117 751.25 1 16 118 757.25 1 17 119 763.25 1 18 120 769.25 1 19 121 775.25 120 122 781.25 121 123 787.25 122 124 793.25

123 125 799.25 90 92 631.25 91 93 637.25

107 109 703.25 108 110 709.25

D–6

DS1000 Series User Manual

Tektronix DS1001, DS1002, DS1003 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

User Manual

Table of Contents

List of Figures

List of Tables

General Safety Summary

Preface

Manual Overview

Contacting Tektronix

Getting Started

Product Description

Options

Electrical Installation

Mechanical Installation

Functional Check

Operating Basics

Functional Overview

Operating Procedures

Reference

Configuring Operation

Program Configuration

Serial Configuration

Frequency Response Configuration

Contrast Adjustment

User Defined Channel Table

Appendix A: Performance Specifications

Appendix B: Remote Control

Serial Port Connection

Programming Model

Sending and Receiving Data

Command Syntax

Remote Command Descriptions

AUD_OUT

AUD_PREF

BTSC

CHANNEL

DISC

FREQ

LOG? (Query only)

MSG_C

PATH

PRESET

RECPRT

REPORT? (Query only)

SETT

STRAP

TUNING

Appendix C: Service

Packaging for Shipment

Replacing the Fuse

Cleaning the Exterior

Appendix D: Channel Tables