User Manual
DS1000 Series
Television Demodulators
070-9858-01
Copyright Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending.
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.
Table of Contents
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
i
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
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. .
iv
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
v
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. . . . . . . . . . . . . . . . . . . .
vi
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
ix
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
x
DS1000 Series User Manual
Getting Started
Getting Started
Á
Á
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
A1
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)
A2
A3
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
2
I
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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DS1000 Series User Manual
Operating Basics
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
DS1000 Series User Manual
2–1
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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DS1000 Series User Manual
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.
DS1000 Series User Manual
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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.
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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.
DS1000 Series User Manual
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