Tektronix 1780-R User Manual
Operator’s Manual
1780R-Series Video Measurement Set
070-6890-08
This document supports firmware version 1.10 to
1.16.
Copyright © Tektronix, Inc. All rights reserved. T ektronix 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.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, 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 three (3) years 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
Service
Support
For other
information
To write us Tektronix, Inc.
Website T ektronix.com
For questions about using T ektronix measurement
products, 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 T ektronix distributor or sales
office.
T ektronix offers extended warranty and calibration
programs as options on many products. Contact
your local T ektronix distributor or sales office.
For a listing of worldwide service centers, visit our
web site.
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
USA
Table of Contents
General Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started
Documentation Overview 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator’s Manual 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Manual 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Documentation Conventions 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Who Should Use This Operator’s Manual 1–2. . . . . . . . . . . . . . . . .
1780R-Series Product Overview 1–2. . . . . . . . . . . . . . . . . . . . . . . .
New Capabilities 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ouch Screen 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1780R-Series Package 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Installation 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rack-Mounting 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectors, Controls, Indicators
Switches 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Companion Switches 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEDs 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Feedback (Beep) 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Beep Sounds When: 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disable the Beep 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A “Click” Occurs When: 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
T ouch Screen 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front-Panel Controls 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1780R-Series Operator’s Manual
i
T able of Contents
Power 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CR T Controls 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precision Measurement (Large Knob) 2–5. . . . . . . . . . . . . . . . .
Menu Access Switches 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Mode 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ref 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wfm Horizontal 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnifier 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Connectors 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions
Large Knob And Associated Switches 3–1. . . . . . . . . . . . . . . . . . .
Timing Cursors 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Cursors 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Select 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phase Shift 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Set 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Knob 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
< > Switches 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graticules 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scale Illumination for Vector and Waveform Graticules 3–6. . .
Using The Vector Graticule 3–6. . . . . . . . . . . . . . . . . . . . . . . . .
Using The Waveform Graticule 3–12. . . . . . . . . . . . . . . . . . . . . .
Remote Operation 3–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REMOTE Connector 3–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Operation 3–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Communications Interface 3–18. . . . . . . . . . . . . . . . . . . . . . .
Serial Interface Connector 3–18. . . . . . . . . . . . . . . . . . . . . . . . . .
Building a Wiring Converter 3–18. . . . . . . . . . . . . . . . . . . . . . . .
Serial Remote Information 3–19. . . . . . . . . . . . . . . . . . . . . . . . . .
SCH Display 3–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCH Phase Measurement Procedure 3–22. . . . . . . . . . . . . . . . . .
ii
1780R-Series Operator’s Manual
T able of Contents
Parade Operation 3–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T wo Line or Field Parade 3–23. . . . . . . . . . . . . . . . . . . . . . . . . . .
Three Line Display 3–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Offset Menu 3–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Level Measurements 3–24. . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Level Measurement Procedure 3–25. . . . . . . . . . . . . . . . . . .
Overlay Operation 3–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overlaid Displays 3–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Offset Menu 3–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WFM + CAL 3–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter WFM+CAL Mode 3–27. . . . . . . . . . . . . . . . . . . . . . . . . . .
General WFM+CAL Information 3–27. . . . . . . . . . . . . . . . . . . .
Menu Information 3–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Documentation Overview 3–31. . . . . . . . . . . . . . . . . . . . .
Menu Access 3–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ouch Screen 3–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Password Menu 3–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable / Disable the Password 3–34. . . . . . . . . . . . . . . . . . . . . . .
Define the Password 3–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change the Password 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use the Password 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Incorrect Password 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preset Menu 3–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recall 3–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recover 3–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Store 3–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Name 3–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibrate Menu 3–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Calibration Menu Information 3–42. . . . . . . . . . . . . . . .
Waveform Calibration Information 3–42. . . . . . . . . . . . . . . . . . .
Waveform Calibration Procedure 3–43. . . . . . . . . . . . . . . . . . . . .
Vectorscope Calibration Information 3–46. . . . . . . . . . . . . . . . . .
Vectorscope Calibration Procedure 3–46. . . . . . . . . . . . . . . . . . .
Vectorscope Calibration Procedure 3–49. . . . . . . . . . . . . . . . . . .
Configure Menu 3–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Configurations 3–52. . . . . . . . . . . . . . . . . . . . . . . . . . .
1780R-Series Operator’s Manual
iii
T able of Contents
Measure Menu 3–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Measure Menu 3–56. . . . . . . . . . . . . . . . . . . . . . . . . . .
Beep 3–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Store and Recall Modified Setups 3–57. . . . . . . . . . . . . . . . . . . .
Making Measurements 3–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurements
Measurement Information 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Phase Measurement 4–2. . . . . . . . . . . . . . . . . . . . . . . .
Enter DIFF PHASE Mode 4–2. . . . . . . . . . . . . . . . . . . . . . . . . .
Exit DIFF PHASE Mode 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
DIFF PHASE Menu Selections 4–2. . . . . . . . . . . . . . . . . . . . . .
DIFF PHASE Measurement Information 4–5. . . . . . . . . . . . . .
Single-Trace DIFF PHASE Measurement Procedure 4–5. . . . .
Double-Trace DIFF PHASE Measurement Procedure 4–6. . . .
Using Line Select in DIFF PHASE 4–6. . . . . . . . . . . . . . . . . . .
Differential Gain Measurement 4–7. . . . . . . . . . . . . . . . . . . . . . . . .
Enter DIFF GAIN Mode 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Exit DIFF GAIN Mode 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIFF GAIN Menu Selections 4–7. . . . . . . . . . . . . . . . . . . . . . .
DIFF GAIN Measurement Information 4–10. . . . . . . . . . . . . . . .
Single-Trace DIFF GAIN Measurement Procedure 4–10. . . . . .
Double-Trace DIFF GAIN Measurement Procedure 4–11. . . . . .
Using Line Select in DIFF GAIN 4–11. . . . . . . . . . . . . . . . . . . .
Simultaneous Diff Phase & Diff Gain Measurements 4–12. . . . . . . .
Enter DP & DG Mode 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exit DP & DG Mode 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DP & DG Menu Selections 4–12. . . . . . . . . . . . . . . . . . . . . . . . .
DP & DG Measurement Information 4–14. . . . . . . . . . . . . . . . . .
DIFF PHASE & DIFF GAIN Measurement Procedure 4–15. . .
Noise Measurement 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter Noise Measurement Mode 4–16. . . . . . . . . . . . . . . . . . . . .
Exit Noise Measurement Mode 4–16. . . . . . . . . . . . . . . . . . . . . .
Noise Measurement Procedure 4–16. . . . . . . . . . . . . . . . . . . . . .
ICPM Measurement 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter ICPM Measurement Mode 4–17. . . . . . . . . . . . . . . . . . . . .
Exit ICPM Measurement Mode 4–17. . . . . . . . . . . . . . . . . . . . . .
ICPM Measurement Information 4–17. . . . . . . . . . . . . . . . . . . . .
ICPM Measurement Procedure 4–18. . . . . . . . . . . . . . . . . . . . . .
iv
1780R-Series Operator’s Manual
T able of Contents
K Factor Measurement 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter K Factor Mode 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making K Factor Measurements 4–20. . . . . . . . . . . . . . . . . . . . .
Chroma / Luma Inequalities Measurement 4–23. . . . . . . . . . . . . . . .
Enter Chroma / Luma Mode 4–23. . . . . . . . . . . . . . . . . . . . . . . .
Exit Chroma / Luma Mode 4–23. . . . . . . . . . . . . . . . . . . . . . . . .
Cursors in Chroma / Luma 4–23. . . . . . . . . . . . . . . . . . . . . . . . . .
Making Chroma / Luma Measurements (Using Cursors) 4–23. .
Chroma / Luma Measurements with Lissajous Display 4–27. . .
Short-Time Distortion Measurement 4–28. . . . . . . . . . . . . . . . . . . . .
Enter Short-Time Distortion Mode 4–28. . . . . . . . . . . . . . . . . . .
Exit Short-Time Distortion Measurement Mode 4–28. . . . . . . . .
Short-Time Distortion Measurement Procedure 4–28. . . . . . . . .
R–Y Sweep Measurement 4–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter R–Y Sweep Mode 4–31. . . . . . . . . . . . . . . . . . . . . . . . . . .
Exit R–Y Sweep Measurement Mode 4–31. . . . . . . . . . . . . . . . .
R–Y Sweep Mode Information 4–32. . . . . . . . . . . . . . . . . . . . . .
Using R–Y Sweep Mode 4–32. . . . . . . . . . . . . . . . . . . . . . . . . . .
Bowtie Measurement 4–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enter Bowtie Measurement Mode 4–33. . . . . . . . . . . . . . . . . . . .
Bowtie Measurement Procedure 4–33. . . . . . . . . . . . . . . . . . . . .
Time Marks Measurement 4–36. . . . . . . . . . . . . . . . . . . . . . . . .
F
SC
Enter F
Exit FSC Time Marks Measurement Mode 4–36. . . . . . . . . . . . .
Making SCH Phase Measurements 4–37. . . . . . . . . . . . . . . . . . .
Voltage Cursors in FSC Time Marks Mode 4–37. . . . . . . . . . . . .
Verifying Burst Position 4–37. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Measurements 4–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Marks Measurement Mode 4–36. . . . . . . . . . . .
SC
Specifications
Options and Accessories
Options 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index
1780R-Series Operator’s Manual
v
T able of Contents
List of Figures
Figure 1–1: Location of the four screws that secure the
instrument to rack-mounting cabinet or portable case 1–5.
Figure 1–2: Dimensions used for rack-mounting the
1780R-Series Video Measurement Set 1–6. . . . . . . . . . . . . . .
Figure 1–3: Dimensions of the adjustable rear
rack-mounting bracket 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–4: Installing rear rack-mounting brackets for rack
applications of depths from 18 to 24 inches 1–8. . . . . . . . . . .
Figure 2–1: Left side of front panel 2–4. . . . . . . . . . . . . . . . . . . .
Figure 2–2: Right side of front panel 2–10. . . . . . . . . . . . . . . . . . .
Figure 2–3: Rear-Panel Connectors 2–17. . . . . . . . . . . . . . . . . . . .
Figure 3–1: Line Select Menu Screen with <2 OF 4> Fields
selected 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–2: Line Select Menu Screen with <1 OF 8> Fields
selected 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–3: 1780R Vector Graticule 3–7. . . . . . . . . . . . . . . . . . .
Figure 3–4: 1781R Vector Graticule 3–8. . . . . . . . . . . . . . . . . . .
Figure 3–5: Rear-panel X–Y Connector Pin Assignments 3–11. .
Figure 3–6: 1780R Waveform Graticule 3–12. . . . . . . . . . . . . . . .
Figure 3–7: 1781R Waveform Graticule 3–13. . . . . . . . . . . . . . . .
Figure 3–8: REMOTE Connector Pin Assignments 3–15. . . . . . .
Figure 3–9: Serial Interface Connector Pin Assignments 3–18. .
Figure 3–10: Serial Interface Connector Wiring Converter 3–19
Figure 3–11: Portion of the 1780R-Series Front Panel 3–21. . . . .
Figure 3–12: Offsets Menu Screen 3–24. . . . . . . . . . . . . . . . . . . . .
Figure 3–13: WFM + CAL Readout with ABS selected 3–28. . . .
Figure 3–14: WFM + CAL Readout with REL selected 3–28. . .
vi
1780R-Series Operator’s Manual
T able of Contents
Figure 3–15: Left Side of Front Panel, showing Menu Buttons
and Touch Screen 3–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–16: Touch Screen 4 X 4 Matrix 3–33. . . . . . . . . . . . . . . .
Figure 3–17: Password Menu Screen 3–34. . . . . . . . . . . . . . . . . . .
Figure 3–18: Preset Menu Screen 3–36. . . . . . . . . . . . . . . . . . . . . .
Figure 3–19: Name Menu Screen 3–41. . . . . . . . . . . . . . . . . . . . . .
Figure 3–20: Waveform Calibration Menu Display 3–44. . . . . . .
Figure 3–21: Vectorscope Calibration Menu Display for
1780R (NTSC), software versions 1.11 & Up, with
CAL OSC Off 3–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–22: Vectorscope Calibration Menu Display for
1780R (NTSC), software versions 1.11 & Up, with
CAL OSC On 3–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–23: Vectorscope Calibration Menu Display for
1781R (PAL) all software versions, and for 1780R (NTSC)
software versions 1.10 & Below 3–50. . . . . . . . . . . . . . . . . . . .
Figure 3–24: Configure Menu Screen, page 1 3–53. . . . . . . . . . . .
Figure 3–25: Configure Menu Screen, page 2 3–54. . . . . . . . . . . .
Figure 3–26: Configure Menu Screen, page 3 3–55. . . . . . . . . . . .
Figure 3–27: Measure Menu Screen 3–56. . . . . . . . . . . . . . . . . . .
Figure 4–1: Measure Menu Access 4–1. . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Differential Phase Measurement 4–3. . . . . . . . . . . .
Figure 4–3: Differential Gain Measurement 4–8. . . . . . . . . . . . .
Figure 4–4: DP & DG Measurement 4–13. . . . . . . . . . . . . . . . . . .
Figure 4–5: Making ICPM Measurements 4–19. . . . . . . . . . . . . .
Figure 4–6: K Factor Electronic Graticule 4–21. . . . . . . . . . . . . .
Figure 4–7: Initial Chroma / Luma Inequalities
Measurement Screen 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Setting Timing Cursors to Pulse Width 4–26. . . . . .
Figure 4–9: Short-Time Distortion Electronic Graticule 4–29. . .
Figure 4–10: Bowtie Measurement Screen 4–34. . . . . . . . . . . . . .
1780R-Series Operator’s Manual
vii
T able of Contents
List of Tables
Table 2–1: Possible Parade and Overlay Configurations 2–11. .
Table 2–2: Waveform Magnification 2–13. . . . . . . . . . . . . . . . . . .
Table 2–3: Multiple Filter Displays 2–14. . . . . . . . . . . . . . . . . . . .
Table 2–4: Possible CH B1, CH B2, CH B3 Switch Settings 2–15
Table 3–1: Plug Jumpers for Vectorscope Board 3–10. . . . . . . . .
Table 3–2: Remote Pin Functions 3–16. . . . . . . . . . . . . . . . . . . . .
Table 3–3: Serial Remote Commands to the 1780R-Series 3–20.
Table 3–4: 1780R-Series Responses 3–20. . . . . . . . . . . . . . . . . . . .
Table 3–5: Initial Settings 3–37. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–6: Configure Menu Selections, page 1 3–53. . . . . . . . . .
Table 3–7: Configure Menu Selections, page 2 3–54. . . . . . . . . .
Table 3–8: Configure Menu Selections, page 3 3–55. . . . . . . . . .
Table 3–9: Measure Menu Description 3–57. . . . . . . . . . . . . . . . .
viii
Table 4–1: DIFF PHASE Front-Panel Configuration 4–4. . . . .
Table 4–2: DIFF GAIN Front-Panel Configuration 4–9. . . . . .
Table 4–3: DP & DG Front-Panel Configuration 4–14. . . . . . . .
Table 4–4: ICPM Front-Panel Configuration 4–17. . . . . . . . . . .
Table 4–5: K Factor Front-Panel Configuration 4–22. . . . . . . . .
Table 4–6: Chroma / Luma Front-Panel Configuration 4–25. . .
Table 4–7: Short-Time Distortion Mode Front-Panel
Configuration 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–8: R–Y Sweep Mode Front-Panel Configuration 4–31.
Table 4–9: Bowtie Mode Front-Panel Configuration 4–35. . . . .
Table 4–10: F
Table 5–1: Input/Output 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Marks Front-Panel Configuration 4–36.
SC
1780R-Series Operator’s Manual
T able of Contents
Table 5–2: Waveform Monitor Vertical System 5–2. . . . . . . . . .
Table 5–3: Waveform Monitor Probe Input 5–7. . . . . . . . . . . . .
Table 5–4: W aveform Monitor Horizontal Deflection
System 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–5: Waveform Monitor DG and DP Display 5–11. . . . . .
Table 5–6: Synchronization 5–13. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–7: Vectorscope Vector Display 5–15. . . . . . . . . . . . . . . . .
Table 5–8: Vectorscope XY Display 5–18. . . . . . . . . . . . . . . . . . .
Table 5–9: Vectorscope SCH Phase Display 5–18. . . . . . . . . . . . .
Table 5–10: CRTs and High Voltage Supplies 5–19. . . . . . . . . . .
Table 5–11: Power Requirements 5–20. . . . . . . . . . . . . . . . . . . . .
Table 5–12: Physical Characteristics 5–20. . . . . . . . . . . . . . . . . .
Table 5–13: Certifications 5–21. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–14: Environmental Summary 5–21. . . . . . . . . . . . . . . . .
1780R-Series Operator’s Manual
ix
T able of Contents
x
1780R-Series Operator’s Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. T o avoid
potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
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.
Use Proper Voltage Setting. Before applying power, ensure that the line
selector is in the proper position for the power source being used.
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. T o 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 apply a potential to any terminal, including the common
terminal, that exceeds the maximum rating of that terminal.
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.
Wear Eye Protection. Wear eye protection if exposure to high-intensity
rays or laser radiation exists.
Do Not Operate With Suspected Failures. If you suspect there is damage
to this product, have it inspected by qualified service personnel.
1780R-Series Operator’s Manual
xi
General Safety Summary
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation.
Refer to the manual’s installation
instructions for details on installing the product so it has proper
ventilation.
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:
xii
CAUTION
Refer to Manual
Not suitable for
connection to
the public telecom-
munications network
WARNING
High Voltage
Double
Insulated
Protective Ground
(Earth) Terminal
1780R-Series Operator’s Manual
Getting Started Getting Started
Getting Started
Documentation Overview
This operator’s manual is one of a set of two manuals that document
the Tektronix 1780R-Series Video Measurement Set. To purchase a
service manual, please refer to the “Contacting T ektronix” page
located near the front of this manual for address and phone number
information.
The topics covered in the two manuals are as follows:
Operator’s Manual
Section 1 Document Overview
Product Overview
Installation
Section 2 Connectors, Controls, Indicators
(including front- and rear-panel illustrations)
Section 3 Operating Instructions (including menus)
Section 4 Measurements
Section 5 Specifications
Section 6 Options and Accessories
Service Manual
Installation
Theory of Operation
Performance Check and Adjustment Procedure
Maintenance
Options
Replaceable Electrical and Mechanical Parts Lists
(with accessory part numbers)
Schematic Diagrams and Circuit Board Illustrations
1780R-Series Operator’s Manual
1–1
Getting Started
Documentation Conventions
Within this manual, front-panel push-button names are shown all in
capitals, such as the PRESET menu button. T ouch screen words are
represented in brackets, such as <DEF AULT>. CRT instructional
labels, such as SELECT MEASUREMENT, are represented in italics
in the manual and on the instrument CRT.
In menu operation, most selections are made by actually touching
the desired area on the CRT screen. This is indicated in the manual
instructions by the use of the word ‘touch’ (as opposed to ‘push’ for
front-panel push buttons).
Who Should Use This Operator’s Manual:
This operator’s manual contains information necessary for daily use,
and is appropriate for use by anyone who operates the 1780R-Series
Video Measurement Set. (The service manual is intended for use by
qualified service personnel only.)
1780R-Series Product Overview
The 1780R-Series Video Measurement Set is a wide bandwidth,
multi-input, waveform/vector/SCH measurement package.
The advantages of separate waveform and vector instruments are
provided in a single package. Specific measurements take advantage
of the 1780R-Series’ shared waveform monitor and vectorscope
internal processing.
Separate waveform and vectorscope CRTs allow simultaneous
monitoring of several video parameters.
Four video inputs may be individually displayed or selected in
various combinations on the waveform monitor. Vector presentations
may be individually displayed, overlaid for comparison, or compared
to an external reference. A fifth video signal may be selected for
individual display via the high-impedance front-panel probe input.
Internal video filters provide specialized measurements, with dual or
triple filter modes available for simultaneous display.
1–2
1780R-Series Operator’s Manual
Getting Started
A selection of internal and external graticules and electronic cursors
permit measurements specific to many studio and transmission
system applications. An external horizontal input facilitates ICPM
measurements.
External staircase from a camera control unit may be selected
remotely .
Slow sweep is standard on the 1780R-Series.
New Capabilities
A precision phase control, with on-screen digital phase readout,
allows precision phase angle measurements. Differential display
resolution is within .05_, with an absolute accuracy of 0.1_ around
the full 360_ vector range.
The Tektronix double-trace differential phase measurement
technique has been enhanced with a digital recursive vertical filter to
permit accurate on-screen readouts in the presence of noise.
The F
Time Marks feature (NTSC ONLY) allows the operator to
SC
verify the accuracy of SCH Phase measurements.
Voltage cursors or Timing cursors can be set to any point, providing
accurate on-screen measurement readouts, and are fully operational
and accurate at all Gain and Magnifier settings.
In addition to the standard remote interface provided on 1700 Series
products, the 1780R-Series provides a serial remote interface,
compatible with RS232 and RS422 standards.
Touch Screen
The 1780R-Series has four main menu modes that provide on-screen
measurement and calibration selections. Through the Preset menu,
the operator can define, name, save, and recall up to 12 front-panel
setups.
Many instrument settings can be easily changed through the
1780R-Series touch screen menus. For example, the Configure menu
allows the choice of internal or external graticule illumination, and
the Calibrate menu allows trace rotation and readout intensity
adjustments. The Measurement menu provides entry into specific
measurement modes.
1780R-Series Operator’s Manual
1–3
Getting Started
1780R-Series Package
The 1780R-Series is supplied as a single 5 1/4-inch high package,
ready for rack-mounting. A portable cabinet is available, providing
handle, feet, and front and rear covers. The instrument is equipped
with a high reliability cooling fan so that no clearance is required
above or below the 1780R-Series.
Mechanical Installation
All qualification testing for the 1780R-Series was performed with
the rack-mount cabinet installed. T o guarantee compliance with
specifications, the instrument should be operated in a cabinet, either
the rack-mount cabinet or the portable case (1780F02). The 1780F02
case has a handle and front and back covers. The front and back
covers provide protection for the instrument during transportation
and storage.
NOTE. Cabinet drawings are provided for installation information
only, and are not to scale. All dimensions are in inches.
The rack-mounting cabinet is a standard accessory; all instruments
are factory shipped in this cabinet. Rack-mounting hardware is
included and listed in T able 1–1. The portable case (1780F02) is
available from T ektronix as an Optional Accessory. It, as does the
rack-mounting cabinet, provides the proper electrical environment
for the instrument, supplies adequate shielding, minimizes handling
damage, and reduces dust collection within the instrument.
Rack-Mounting
The 1780R-Series rack-mounting cabinet is designed for permanent
mounting. The instrument slides in and out of the cabinet with
relative ease. The instrument is secured in the cabinet with four 6–32
TORXR drive screws. See Figure 1–1.
1–4
1780R-Series Operator’s Manual
Getting Started
Figure 1–1: Location of the four screws that secure the instrument to
rack-mounting cabinet or portable case
WARNING. Do not attempt to carry a cabinetized instrument without
installing the rear -panel mounting screws. There is nothing to hold
the instrument in the cabinet if it is tipped forward.
Table 1–1: Rack-Mounting Hardware Included
Qty Description Part Number
2 Bracket, Extension: 2.5 X 8.06 X 0.06, Steel 407-3752-00
2 Nut Bar: (3) 10-32 X 3.0 X 0.375 X 0.125, Aluminum 381-0251-00
12 Screw, Machine: 10-32 X 0.625, Steel 212-0577-00
4 Washer, Flat: 0.203 ID X 0.625 OD X 0.062, Steel 210-1061-00
A front clearance of at least 18 inches is required for removing the
instrument from the rack. BNC connectors on the rear panel extend
approximately 0.6 inches, making it necessary to have 1 inch or
more of rear clearance to have enough room to cable the instrument.
See Figure 1–2 for rack-mounting dimensions.
1780R-Series Operator’s Manual
1–5
Getting Started
1–6
Figure 1–2: Dimensions used for rack-mounting the 1780R-Series Video
Measurement Set
1780R-Series Operator’s Manual
Getting Started
Figure 1–3: Dimensions of the adjustable rear rack-mounting bracket
To install the instrument in the rack: First remove the four securing
screws and take the instrument out of the rack-mounting cabinet.
(All 1780R-Series instruments are shipped in the rack-mounting
cabinet to provide extra shipping protection.) Once the instrument is
out of the cabinet, mount the front of the cabinet in the rack, using
four 10–32 TORXR screws. Cabinet front slots are spaced, and wide
enough, to accommodate standard racks. Next, mount the adjustable
brackets to the rear rack section. See Figure 1–3 for bracket
dimensions. Then mount the adjustable brackets to the rack-mount
cabinet using four 10–32 TORXR screws, four number 10 flat
washers, and the nut bars. See Figure 1–4 for more assembly detail.
Finally , re-install the four 6–32 screws that secure the instrument to
the rack-mounting cabinet. See Figure 1–1.
1780R-Series Operator’s Manual
1–7
Getting Started
1–8
Figure 1–4: Installing rear rack-mounting brackets for rack applications
of depths from 18 to 24 inches
NOTE. For ease of installation, place the nut bars to the outside of
the adjustable brackets and drive the screws from the center into the
nut bars.
For applications where it is necessary to rack-mount the instrument,
but have it removable with the instrument case, order the 1780F05
Rack-Mount Shelf.
1780R-Series Operator’s Manual
Options
The 1780R-Series is shipped with a standard U.S. plug, or can be
ordered with one of the following options.
Option A1 (220 V, European plug)
Option A2 (240 V, United Kingdom plug)
Option A3 (240 V, Australian plug)
These are the only options currently available for the 1780R-Series.
Part numbers are listed in Section 6.
Standard Accessories
The following accessories are shipped with the 1780R-Series. Part
numbers are listed in Section 6.
1 1780R-Series Operator’s Manual
1 Cable, Power (Standard, Opt A1, A2, or A3)
Getting Started
1 Filter, Air
1 Graticule, 511-1979, Visual (1780R ONLY)
1 Graticule, 511-1979, Photographic (1780R ONLY)
1 Graticule, K-Factor, V isual (1781R ONLY)
1 Graticule, K-Factor, Photographic (1781R ONLY)
3 Graticule Lamp, Incandescent
1 Replacement Cartridge Fuse, 2 A Slow Blow
1780R-Series Operator’s Manual
1–9
Getting Started
Optional Accessories
The following is a list of the most common accessory items for the
1780R-Series. Part numbers, if applicable, are listed in Section 6.
1780R-Series Service Manual
Viewing Hood
Portable Cabinet
Extender Kit for Oscillator and Z-Axis Circuit Boards
1–10
1780R-Series Operator’s Manual
Loading...