Tektronix TSG 120 User manual

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Instruction Manual
TSG 120
YC / NTSC Signal Generator
S/N B020765 and Above
070-8003-02

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.

Contacting Tektronix
Product
Support For application-oriented questions about a Tektronix measure- ment 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:
[email protected]
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Service
Support Contact your local Tektronix distributor or sales office. Or visit our web site for a listing of worldwide service locations.
http://www.tek.com
For other
information In North America: 1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
To write us Tektronix, Inc.
P.O. Box 1000
Wilsonville, OR 97070-1000

Service Assurance
If you have not already purchased Service Assurance for this product, you may do so at any time during the product’s
warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs.
Repair Protection extends priority repair services beyond the product’s warranty period; you may purchase up to three
years of Repair Protection.
Calibration Services provide annual calibration of your product, standards compliance and required audit documentation,
recall assurance, and reminder notification of scheduled calibration. Coverage begins upon registration; you may purchase
up to five years of Calibration Services.
Service Assurance Advantages
HPriced well below the cost of a single repair or calibration
HAvoid delays for service by eliminating the need for separate purchase authorizations from your company
HEliminates unexpected service expenses
For Information and Ordering
For more information or to order Service Assurance, contact your Tektronix representative and provide the information
below. Service Assurance may not be available in locations outside the United States of America.
Name VISA or Master Card number and expiration
Company date or purchase order number
Address Repair Protection (1,2, or 3 years)
City, State, Postal code Calibration Services (1,2,3,4, or 5 years)
Country Instrument model and serial number
Phone Instrument purchase date

TSG 120 YC/NTSC Signal Generator i
Table of Contents
General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started
Option 01 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 02 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
   1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Description 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls, Connections, and Jumpers 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Controls 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Connections 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jumpers 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
Specifications 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 02 Signals 2–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification
Performance Verification Checklist 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification Procedures 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedure
Adjustment Check List 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedures 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
Configuring the Power Supply 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Power Supply Mains Voltage 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TSG 120 Block Diagram 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts
Diagrams
Replaceable Mechanical Parts

Table of Contents
ii TSG 120 YC/NTSC Signal Generator
List of Figures
Figure 1–1: Standard front panel and controls 1–3. . . . . . . . . . . . . . . . . .
Figure 1–2: Option 02 front panel and controls 1–3. . . . . . . . . . . . . . . . . .
Figure 1–3: Rear panel and connections 1–4. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–1: Color bars component of SMPTE bars 2–6. . . . . . . . . . . . . .
Figure 2–2: Reverse blue bars component of SMPTE bars 2–7. . . . . . . .
Figure 2–3: IYQB component of SMPTE bars 2–8. . . . . . . . . . . . . . . . . . .
Figure 2–4: Red field 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5: Green field 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–6: Blue field 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7: 50% flat field 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–8: 100% flat field 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–9: 0% flat field 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–10: Chroma noise 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–11: Chroma response and markers 2–16. . . . . . . . . . . . . . . . . . . .
Figure 2–12: Convergence 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–13: 5 Step 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–14: Mod ramp 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–15: Pulse and bar 2–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–16: Multiburst 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–17: Matrix 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–18: Y channel 75% color bars 2–23. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–19: C channel 75% color bars 2–23. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–20: Y channel cable multiburst signal 2–24. . . . . . . . . . . . . . . . . .
Figure 2–21: C channel for the following signals:cable multiburst,
cable sweep, Sin(x)/x, and ghost canceling 2–24. . . . . . . . . . . . . . . . . .
Figure 2–22: Y channel cable sweep markers 2–25. . . . . . . . . . . . . . . . . . . .
Figure 2–23: Y channel cable sweep signal 2–25. . . . . . . . . . . . . . . . . . . . . .
Figure 2–24: Y channel FCC test signal 2–26. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–25: C channel FCC test signal 2–26. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–26: Y channel of the Sin(x)/x test signal 2–27. . . . . . . . . . . . . . . .
Figure 2–27: Y channel for ghost canceling 2–27. . . . . . . . . . . . . . . . . . . . .
Figure 2–28: Y channel NTC7 test signal 2–28. . . . . . . . . . . . . . . . . . . . . . .
Figure 2–29: C channel NTC7 test signal 2–28. . . . . . . . . . . . . . . . . . . . . . .
Figure 2–30: Y channel NTC7 combination signal 2–29. . . . . . . . . . . . . . .
Figure 2–31: C channel NTC7 combination signal 2–29. . . . . . . . . . . . . . .

Table of Contents
TSG 120 YC/NTSC Signal Generator iii
Figure 3–1: Blanking level verification test setup
(video measurement set) 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–2: Blanking level verification test setup (oscilloscope) 3–5. . . . .
Figure 3–3: Sync amplitude verification test setup 3–6. . . . . . . . . . . . . . .
Figure 3–4: Differential Gain test setup 3–10. . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–5: Blanking level or amplitude test setup
(video measurement set) 3–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–6: Blanking level or amplitude test setup (oscilloscope) 3–11. . .
Figure 3–7: Luminance amplitude test setup 3–12. . . . . . . . . . . . . . . . . . . .
Figure 3–8: Chrominance blanking level test setup 3–15. . . . . . . . . . . . . . .
Figure 3–9: Chrominance response test setup 3–16. . . . . . . . . . . . . . . . . . .
Figure 3–10: Chrominance-luminance delay test setup 3–17. . . . . . . . . . . .
Figure 3–11: Total harmonic distortion test setup 3–18. . . . . . . . . . . . . . . .
Figure 3–12: Free-running frequency test setup 3–19. . . . . . . . . . . . . . . . .
Figure 4–1:Audio tone level test setup 4–4. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: ID click frequency test setup 4–5. . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3: Oscillator frequency test setup 4–6. . . . . . . . . . . . . . . . . . . . .
Figure 4–4: NTSC sync amplitude test setup
(video measurement set) 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–5: NTSC sync amplitude test setup
(vac and waveform monitor) 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6: NTSC signal blanking level test setup 4–9. . . . . . . . . . . . . . . .
Figure 5–1: TSG 120 block diagram 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . .