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User Manual

WVR500 Waveform/Vector Monitor 070-8927-05

This document supports firmware version 2.00.

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 97070­1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If any such 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 WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED 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.

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
H Priced well below the cost of a single repair or calibration H Avoid delays for service by eliminating the need for separate purchase authorizations from your company H Eliminates 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 Company Address City, State, Postal code Country Phone VISA or Master Card number and expiration date or purchase order number Repair Protection (1,2, or 3 years) Calibration Services (1,2,3,4, or 5 years) Instrument model and serial number Instrument purchase date

Table of Contents
General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v vii

Getting Started
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­1 1­3 1­4 1­6

Operating Basics
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front-Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear-Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Special Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . On-Screen Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Menu System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform and Vector Display Mode Menus . . . . . . . . . . . . . . . Picture Display Mode Menus . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform-in-Picture Display Mode Menus . . . . . . . . . . . . . . . Making Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform Graticules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Making Waveform Measurements . . . . . . . . . . . . . . . . . . . . . . . Vector Graticules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Making Vector Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2­1 2­1 2­6 2­7 2­8 2­11 2­11 2­13 2­22 2­25 2­27 2­27 2­29 2­29 2­32 2­33

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Table of Contents

Appendices
Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix B: Remote Interface . . . . . . . . . . . . . . . . . . . . . . . . Equipment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remote Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix C: User Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operational Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instrument Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A­1 B­1 B­1 B­5 C­1 C­1 C­4 C­5

Index

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List of Figures
Figure 2­1: Instrument front and rear panels . . . . . . . . . . . Figure 2­2: On-screen readout display . . . . . . . . . . . . . . . . . Figure 2­3: Typical menu display . . . . . . . . . . . . . . . . . . . . . Figure 2­4: Waveform/Vector display mode Operating menus page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­5: Waveform/Vector display mode Operating menu page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­6: Presets menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­7: Waveform/Vector display mode Display menu page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­8: Waveform/Vector display mode Display menu page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­9: Waveform display mode Display menu page 3 . Figure 2­10: Waveform/Vector display mode Configure menu page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­11: Waveform/Vector display mode Configure menu page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­12: Waveform/Vector display mode Configure menu page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­13: Picture display mode Operating menu . . . . . . Figure 2­14: Picture display mode Display menu . . . . . . . . Figure 2­15: Waveform-in-Picture display mode Operating menu page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­16: Waveform-in-Picture display mode Operating menu page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­17: NTSC waveform graticule . . . . . . . . . . . . . . . . Figure 2­18: PAL waveform graticule . . . . . . . . . . . . . . . . . . Figure 2­19: NTSC vector graticule . . . . . . . . . . . . . . . . . . . Figure 2­20: PAL vector graticule . . . . . . . . . . . . . . . . . . . . . 2­2 2­9 2­11 2­14 2­15 2­16 2­17 2­18 2­19 2­20 2­21 2­22 2­23 2­24 2­25 2­26 2­28 2­28 2­30 2­30

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Figure 2­21: Vector targets ­ NTSC values (PAL values in parentheses) . . . . . . . . . . . . . . . . . . . . . . . Figure 2­22: Differential gain and phase measurement box Figure 2­23: Waveform NTSC 2 Line sweep display . . . . . Figure 2­24: 2 Line parade display of Flat and Lum filters Figure 2­25: Vector display of NTSC color bars signal . . . . Figure 2­26: Picture display of NTSC color bars with the Safe Title and Safe Action areas outlined . . . . . Figure 2­27: Waveform-in-Picture color bars display with Both In Picture selected . . . . . . . . . . . . . . . . . . . . . . Figure B­1: Remote connector pin-out assignments . . . . . . Figure B­2: Remote cable hookup for 9-pin PC connector . Figure B­3: Remote cable hookup for 25-pin PC connector Figure C­1: Removing the top cover . . . . . . . . . . . . . . . . . . . Figure C­2: Operational jumper locations . . . . . . . . . . . . . .

2­31 2­32 2­35 2­38 2­40 2­41 2­42 B­2 B­2 B­3 C­2 C­3

List of Tables
Table 2­1: Tutorial required equipment . . . . . . . . . . . . . . . . Table A­1: Vertical deflection system . . . . . . . . . . . . . . . . . . Table A­2: DC restoration . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­3: Horizontal deflection system . . . . . . . . . . . . . . . Table A­4: Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­5: Vector mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­6: Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­7: Physical characteristics . . . . . . . . . . . . . . . . . . . . Table A­8: Environmental characteristics . . . . . . . . . . . . . . Table A­9: Certifications and compliances . . . . . . . . . . . . . Table C­1: Internal operational jumper selections . . . . . . . 2­34 A­2 A­4 A­5 A­6 A­6 A­8 A­8 A­9 A­10 C­3

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WVR500 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.

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 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.
Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere.

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General Safety Summary

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:

WARNING High Voltage

Protective Ground (Earth) Terminal

CAUTION Refer to Manual

Double Insulated

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WVR500 User Manual

Preface
This manual is a guide for users of the WVR 500 Waveform/Vector Monitor and contains instructions for its practical use.

Manual Overview
This manual contains the following sections: Getting Started contains a product description, a list of instrument accessories, and installation instructions. Operating Basics contains a functional overview of the operation of the front and rear panels, detailed descriptions of the menu selections, graticule and basic measurement descriptions, and a tutorial for instrument familiarization. Appendix A contains instrument electrical and mechanical specifications. Appendix B describes the remote control interface and lists the remote commands. Appendix C covers routine user-service procedures such as replacing fuses and instrument cleaning. Also provided is a list of available instrument options.

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WVR500 User Manual

Getting Started

Getting Started
This section contains a product description, a list of instrument accessories, and installation instructions.

Product Description
The Tektronix WVR 500 is a half-rack wide, one rack unit high, rasterizing television waveform/vector/picture monitor with NTSC and PAL capability. Without a built-in display device, it outputs a display signal that can be connected to a remote monitor or video switcher. Traditional applications for this monitor include areas of production, postproduction, and transmission of television signals. Untraditional applications include remote video monitoring of unmanned video uplinks/downlinks and television transmitters. Key Features The WVR500 utilizes the following key features: H Rasterized output which can display the waveform/vector/picture monitor displays simultaneously H Menu-assisted monitoring operation H Two channels of video inputs and two video outputs H Complete instrument operation possible through the RS-232 remote port H Amplitude alarm for the waveform display H Ability to store/recall four instrument setups H Adjustable signal and graticule display colors H Instrument calibration performed from the front panel H Universal power supply automatically accommodating AC supplies from 90­250 V, 50­60 Hz

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Getting Started

Rasterized Display. The WVR 500 utilizes a proprietary rasterizer which displays analog-like waveforms and vectors and the remote monitor simultaneously with the appropriate measurement graticule.

The rasterized waveform and vector displays can fill the entire display or be reduced to 1/4-screen sized windows over the picture display. The reduced windows can be made transparent for complete viewing of the picture display.
Menus. The WVR 500 menus use a combination of on-screen readout

and multi-use buttons, in conjunction with a general-purpose adjustment knob, to control most of its monitoring functions.
RS­232 Port. The RS-232 remote connector enables remote instrument operation. All front-panel controls and menu selections can be operated through this port. Alarm Mode. For the waveform monitor display only, there is an

Alarm mode which highlights any portion of the displayed signal that exceeds the 100 IRE (1.0 V PAL) graticule line.
Calibration. The WVR 500 can be calibrated entirely from the front

panel after the movement of an internal jumper. Refer to the WVR500 Waveform/Vector Monitor Service Manual for instructions on how to calibrate the instrument. More Information H Menu descriptions begin on page 2­11 H A tutorial to acquaint you with the basic functions of the instrument begins on page 2­33 H A complete listing of instrument specifications is located in Appendix A: Specifications H The RS-232 remote interface operation is detailed in Appendix B: Remote Interface H Instrument options are listed in Appendix C: User Service

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Accessories
Listed below are the standard accessories, optional accessories, and field upgrade kits available with this instrument. Refer to Appendix C: User Service for a list of available instrument options. Standard Accessories These standard accessories are shipped with the product: 1 1 Manual, user: WVR 500 (070-8927-xx) Cable assembly, power: United States and Japan only (161-0216-00)

Optional Accessories There is one optional accessory available for the product: Manual, service: WVR 500 (070-8897-xx) Field Upgrade Kits The following field upgrade kits can be ordered with this instrument, or purchased through a Tektronix field office or distributor. When ordering, include both the name and number of the Field Upgrade Kits. Dimensional drawings are shipped with each cabinet. For more information, contact a Tektronix field office or distributor.
TVGF13. This is a dual side-by-side rack adapter which allows you to

mount two half-rack width instruments in a standard 19-inch rack.
TVGF14. This is a dual half-rack width adapter which allows you to mount two half-rack width instruments in a standard half-rack application. The WVR 500 will fit only in the lower portion of this adapter.

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Getting Started

Installation
The instructions for instrument installation are followed by instructions for repackaging the instrument for shipment. Save the shipping carton and packing materials (including antistatic bag) in case it becomes necessary to ship the instrument to a Tektronix Service Center for service or repair. Electrical Installation Observe the following information before installing your instrument.
Power Source. These monitors are 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.

WARNING. Dangerous line-potential voltage will be present when mains AC power is supplied to the instrument.

Mains Frequency and Voltage Range. The WVR 500 monitor operates at

50 and 60 Hz over the range of 90­250 Volts without operator adjustment.
RS­232 Remote Port. The rear-panel RS-232 connector provides a

serial interface for remote control of instrument functions. The remote connector is a 9-pin subminiature D-type with male contacts. The remote interface and command set are detailed in Appendix B.
Operational Jumpers. The only operational modifications made to this

monitor through internal jumper settings are input coupling and the enabling of the Calibration mode. Refer to Appendix C: User Service for instructions on how to change the jumper settings.

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Getting Started

Mechanical Installation All qualification testing was performed with the cabinet installed. To guarantee compliance with specifications, only operate the instrument in a cabinet or rackmount adapter. The Tektronix TVGF13 and TVGF14 provide the proper electrical environment, supply adequate shielding, minimize handling damage, and reduce dust collection within the instrument.
Cabinet. This instrument is shipped installed in a cabinet. There are not any optional cabinets available. Custom Installation. For applications such as consoles, the instrument

can be mounted with the front molding flush or protruding from the console. In both cases, allow approximately three inches of rear clearance for power cord and cable connections. To mount the instrument safely, attach it to a shelf strong enough to hold its weight.
Rackmounting. The WVR 500 monitor is half-rack width and one rack unit high. It requires approximately three inches of rear clearance for power cord and cable connections and 20 inches in front of a rack for installation and removal of the instrument.

Refer to Field Upgrade Kits on page 1­3 for information about optional rackmounting hardware. Repackaging If you ship an instrument to a Tektronix Service Center, follow these packaging instructions: 1. Attach a tag to the instrument showing: the owner, complete address and phone number of someone at your firm who can be contacted, the instrument serial number, and a description of the required service. 2. Package the instrument in the original packaging materials. If the original packaging materials are not available, follow these directions: a. Obtain a carton of corrugated cardboard having inside dimensions six or more inches greater than the dimensions of the instrument. Use a shipping carton that has a test strength of at least 275 pounds. WVR500 User Manual 1­5

Getting Started

b. Surround the instrument with a protective bag (antistatic preferred). If the instrument is not in a cabinet, wrap a cardboard piece around the bagged instrument to protect components. c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress by closing the lid. There should be three inches of tightly packed cushioning on all sides of the instrument. 3. Seal the carton with shipping tape, industrial stapler, or both.

Configuration
All instrument configuration parameters are set through the menu system except for the parameters set by the operational jumpers. Refer to Appendix C: User Service for instructions on how to change the operational jumper settings.

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Operating Basics

Functional Overview
Operating Basics is organized into the following sections: H Functional Overview describes the front-panel controls and rear-panel connectors, special operating modes, and the on-screen readout messages. H Using the Menus describes operating the menus and details of each menu selection. H Making Measurements describes the graticules and provides measurement procedures. H Tutorial provides a procedure to acquaint you with the basic functions of the instrument.

Front-Panel Controls
The front and rear panels are illustrated in Figure 2­1. Each knob is the continuous-rotation type with the adjustment-range limit reached when there are no more visible display changes. The large center knob has adjustment functions assigned to it through the menus. This knob is referred to as the General Purpose (GP) Knob. The buttons are push and release toggle switches with some of the selections backlit to indicate the current setting. This instrument does not have an external power switch. The instrument is turned on or off by plugging or unplugging the power cord from the power source. WARNING. If an appropriate power source is supplied to this instrument, line voltage will be present. Do not operate the instrument without the cabinet installed or serious injury could result.

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Functional Overview

1

6

Front panel

Rear panel

Figure 2­1: Instrument front and rear panels

9

5

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WVR500 User Manual

Functional Overview

Display Mode Selection Press the Waveform button to select the Waveform display mode. The Waveform display mode provides a voltage-versus-time display of the video signal. Press the Vector button to select the Vector display mode. The Vector display mode provides an XY plot of the demodulated chrominance phase and amplitude portion of the video signal. The angle represents chrominance phase, and the distance from the center represents chrominance amplitude. Press the Picture button to select the Picture display mode. The Picture display mode presents the video signal as a picture. Press the WV in Pic button to select the Waveform-in-Picture display mode. The Waveform-in-Picture display mode presents the waveform and/or vector displays, reduced to 1/4-screen sized windows, over the picture display. The reduced waveform and vector displays can be made transparent to view the entire picture display and can be positioned in the upper or lower half of the screen. Input Channel Selection Press the Input button to toggle the display between the video signals on the channel A and channel B rear-panel input connectors. Only one input channel can be selected for display at a time. The currently selected channel is shown by a lighted indicator. Signal Reference Selection Press the Ref button to toggle the signal reference between Int (internal reference) and Ext (external reference). The current signal reference is shown by a lighted indicator. The instrument will operate from external reference signals of composite video or black burst. Sweep Rate Selection Sweep rate selection only applies to the Waveform display mode. The current sweep rate is shown by a lighted indicator. Press the Sweep button to toggle the display through three sweep rates: 1 Line (5 ms/div.), 2 Line (10 ms/div.), and 2 Field.

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Functional Overview

Press the Mag button to horizontally magnify the sweep to additional sweep rates: 1 Line + Mag (0.5 ms/div.) and 2 Line + Mag (1 ms/div.). 2 Field + Mag magnifies the sweep by approximately X20. An indicator lights when Mag is selected. The current sweep rate is displayed in the on-screen readout. X20 is displayed when 2 Field + Mag is selected. Signal Gain Press the Gain X5 button to vertically magnify the waveform display by X5. The vector display is magnified X5 in all directions. An indicator lights when Gain X5 is selected. Variable gain is activated through a menu selection in the Operating menu. The Waveform and Vector display modes have separate gain adjustments. The message Var is displayed in the on-screen readout when variable gain is turned on. Signal Positioning For the Waveform display mode, signal positioning is controlled by the µ and ´ knobs. In the Vector display mode, the signal is auto-centered, and the position cannot be adjusted. Filter Selection Filter selections apply to the Waveform display mode only. The current filter selection is shown by a lighted indicator. Press the Filter button to toggle the waveform display through Flat (no filter), Lum (low-pass filtered for luminance display), and both Flat and Lum filters. The message LP is displayed in the on-screen readout when the Lum filter is selected. The message Par is displayed when both Flat and Lum filters are selected. 2 Line and 2 Field sweep rates display the two filters in a parade, while 1 Line sweep displays an overlay of the two filters. Line Selection Line Select mode allows you to select a single line to display from lines 6 to 262 for NTSC and lines 3 to 312 for PAL. You can select

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Functional Overview

the line to display from fields one and three, two and four, or all fields of the video input signal. Press the Line Sel button to toggle the Line Select mode on and off. An indicator lights when the mode is turned on. Any open menus will be closed when Line Select mode is turned on. Line and field selections, as well as screen update speed, are made through the Waveform or Vector display mode Operating menus after the Line Select mode has been turned on. Both the on-screen readout and the Operating menu display the currently selected line and field numbers when the Line Select mode is turned on. Line Select mode is not displayed in 2 Field sweep. If 2 Field sweep is selected when Line Select is turned on, the sweep rate will automatically change to 1 Line. While Line Select mode is turned on, the Sweep button will toggle between the 1 Line and 2 Line sweep rates only. In 2 Line sweep, the line displayed on the left is the selected line. Menu Control Menu operation is detailed in Using the Menus starting on page 2­11. The Menu button displays the Operating menu for the currently selected display mode. Contents include variable gain and vector phase control, as well as safe title and safe action windows. The Presets button displays the Presets Recall/Store menu in the Waveform and Vector display modes only. This menu allows you to save or recall up to four instrument front-panel and menu setups. The Display button enters the Display menu for the currently selected display mode. Contents include signal and graticule intensity and color adjustments. The Config button enters the Configure menu, which is the same for all display modes. Several operating parameters, such as instrument monitoring standard, DC restorer clamp speed, and graticule visibility, are set in this menu.

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Functional Overview

Press the Clear button once to clear the menu display, but leave the GP Knob in control of any function assigned to it through the menus. Press the Clear button a second time to return the GP Knob to the default function of the current display mode. Menu selections are made by pressing the Numbered Button corresponding to the menu selection number. Menu selections can only be made when the menus are open. The GP Knob is assigned control of various adjustments through the menus. The current function assigned to the knob is displayed in the on-screen readout. Instrument Reset Extraordinary conditions may cause the instrument front-panel controls to become locked. To reset the instrument, unplug the power cord from the power source and then plug it back in. If this reset does not unlock the controls, contact your Tektronix field office or call Tektronix at the phone number listed in the front of this manual.

Rear-Panel Connectors
The front and rear panels are illustrated in Figure 2­1 on page 2­2. Loopthrough Inputs CH-A and CH-B are passive loopthrough video inputs, compensated for 75 W. The front-panel Input switch setting determines which channel is displayed. Ext Ref is a 75 W compensated loopthrough synchronization input. Internal or external reference is selected through the front-panel Ref switch. The instrument will operate from external reference signals of composite video or black burst. Outputs Video Out is a 75 W compensated dual output of the video signal selected by the front-panel Input switch. These outputs can be used to drive a picture monitor and/or a video switcher.

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WVR500 User Manual

Functional Overview

RS232 Remote Connector Remote is a 9-pin subminiature D-type connector that provides a serial interface for remote control. All front-panel controls and menu settings can be set through this interface. Refer to Appendix B: Remote Interface for detailed information about the remote interface. AC Power The AC Power plug is a standard AC plug receptacle for 120 or 240 VAC power mains. The plug is compatible with any of the power cord options available with the instrument. The instrument operates at 50 and 60 Hz over the range of 90­250 Volts without operator adjustment.

Special Operating Modes
The following operating modes are turned on through the menus. Amplitude Alarm Mode The Amplitude Alarm mode applies to the Waveform display mode only. When the Amplitude Alarm has been turned on, any portion of the signal display exceeding the 100 IRE (1.0 V PAL) graticule line is highlighted. The Amplitude Alarm display is also visible in the waveform-display portion of the Waveform-in-Picture display mode. The Amplitude Alarm is turned on through the Waveform display mode Operating menu. Characteristics of the highlighted portion of the display, such as intensity and color, are set through the Waveform display mode Display menu. Variable Gain Mode The Variable Gain mode is turned on through the Operating menus of the Waveform and Vector display modes. Turning the Variable Gain mode on in the Waveform display mode does not turn it on in the Vector display mode. The Waveform and Vector display modes have separate variable gain adjustments and do not track with each other. VAR is displayed in the on-screen readout when Variable Gain is turned on.

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Functional Overview

When Variable Gain is on, and the GP Knob has been assigned a different control function, selecting variable gain from the menu will reassign the GP Knob to variable gain control. A second press of the button will turn the mode off. The GP Knob is assigned to variable gain control when you enter the Waveform or Vector display modes if variable gain was left on when that display mode was last exited. Calibration Mode The Calibration mode is turned on through the Configure menu after the movement of an internal jumper (A2J27). Refer to the WVR500 Waveform/Vector Monitor Service Manual for instructions on how to calibrate the instrument.

On-Screen Readout
This instrument uses on-screen readouts to display the current front-panel control settings when the Waveform or Vector display modes are selected. The readouts do not appear in the reduced displays of the Waveform-in-Picture display mode. The readout can be turned on or off through the Configure menu. Figure 2­2 shows the locations of the readout messages. Readout Description 1 The currently selected input channel; CH A or CH B. 2 The current monitoring standard; NTSC or PAL. 3 The current signal reference; Int (internal) or Ext (external). 4 The current filter selection. The readout is blank if Flat filter is selected. LP (low pass) is displayed if Lum filter is selected. PAR (parade) is displayed if both Flat and Lum filters are selected. The readout appears in this location in Waveform display mode only. For the Vector display mode, this readout is in location 7.

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Functional Overview

1

2

3

4

5

6

7 8

CH A NTSC INT PAR VAR DVAR GAIN 100 PAR VAR 80
60 40 20 0 ­20 ­40

MISSING SYNC

LINE 16 ALL 9

5US/D 10

TEK

Figure 2­2: On-screen readout display 5 Displays the current state of variable gain. The readout is blank if variable gain is off, and VAR is displayed when variable gain is turned on. The readout appears in this location in the Waveform display mode only. For the Vector display mode, this readout appears in location 7. 6 Displays the current function assigned to the GP Knob. 7 The filter selection and variable gain readout locations for the Vector display mode only. 8 The message Missing Sync or Bad Sync is displayed when the signal reference is lost. Missing Sync is displayed when there is no sync pulse detected by the instrument. Bad Sync is displayed when a sync pulse is detected but cannot be processed.

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Functional Overview

A Configuration menu selection turns the sync message on and off. The sync message appears in different locations depending on the current display mode. The sync message will not appear if the on-screen readout has been turned off. In Picture display mode, the screen goes completely black if the sync message or readout is turned off. 9 Displays the currently selected line and field numbers when the Line Select mode is turned on. The readout lists the selected line first, followed by the field number. The Missing Sync or Bad Sync messages appear here in the Waveform and Vector display modes when the signal reference is lost. 10 Displays the current sweep rate in the Waveform display mode only; 5US/D for 1 Line sweep, 10US/D for 2 Line sweep, 0.5US/D for 1 Line + Mag sweep, 1US/D for 2 Line + Mag sweep, and X20 for 2 Field + Mag sweep. No readout appears for 2 Field sweep.

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WVR500 User Manual

Using the Menus
This section contains instructions for using the menus and provides details of each menu selection.

Menu System Overview
Menus are entered by pressing one of the following front-panel buttons: Menu, Presets, Display, and Config. Menus are exited either by pressing the Clear button, selecting a different menu, selecting another display mode, or by turning on the Line Select mode. The menu selections displayed by each of the four menus are dependent on the current display mode. Several of the menus are multipage, shown by the menu selection option of More. Figure 2­3 illustrates a typical menu display.

PAL STANDARD CLAMP OFF FAST CLAMP

PAL PLUS V OFF MORE

Figure 2­3: Typical menu display Making Menu Selections Menu selections are made by pressing the numbered front-panel button corresponding to the menu selection number. The highlight WVR500 User Manual 2­11

Using the Menus

bar toggles through the menu selections with each press of the numbered button. Selections can be made only while the menu is displayed. When the instrument is first turned on, the menus open to page one. When a menu is entered again, it opens to the menu page that was previously open. GP Knob Function Control The center unlabeled knob is the General Purpose (GP) Knob. This variable-control knob is assigned various adjustment functions through the menus. This adjustment knob is sensitive to quick turns. Adjustments should be made with moderate knob-turning speed. When a menu selection assigns control of a function to the GP Knob, a knob icon appears in front of the function name in that menu. The current function of the GP Knob is displayed next to a knob icon in the on-screen readout. Each display mode assigns a default function to the GP Knob when the display mode is entered as listed below: H The Waveform display mode assigns GP Knob control to signal intensity or to variable gain if the variable gain mode was left on when the Waveform display mode was last exited. H The Vector display mode assigns GP Knob control to vector phase or to variable gain if the variable gain mode was left on when the Vector display mode was last exited. H The Picture display mode does not assign a default function to the GP Knob. H The Waveform-in-Picture display mode assigns GP Knob control to vector phase when the Vector display is one of the reducedsize displays. When only the reduced-size Waveform display is selected, the GP Knob is not assigned a function. Clearing Menu Displays Press the Clear button once to remove the menu display, but leave the GP Knob in control of any function assigned to it through the

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menus. Press the Clear button a second time to return the GP Knob to the default function of the current display mode. Entering a new display mode while a menu is open closes the open menu and enters the new display mode. The GP Knob is assigned to the default function of the new display mode or to variable gain control if variable gain was left on in the new display mode. Selecting a different menu for the current display mode with a menu already open closes the current menu and displays the new menu. The GP Knob retains control of the function assigned to it until a new menu selection reassigns it to a new function. Turning the Line Select mode on closes any open menu and leaves the GP Knob in control of its currently selected function. Turning the Line Select mode off closes any open menu and reassigns the GP Knob to the default function of the current display mode.

Waveform and Vector Display Mode Menus
The Waveform and Vector display mode menus are very similar. The following menu descriptions apply to both display modes unless otherwise noted. Operating Menu The Operating menu is entered by pressing the Menu button. The Operating menus of the Waveform and Vector display modes are identical except for the first menu item. A second page of menu selections appears when the Line Select mode is turned on. The Line Select mode is discussed on page 2­4.

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Using the Menus

D PHASE ADJUST VAR GAIN ON VAR GAIN OFF READOUT ON READOUT OFF MENU LEFT MENU RIGHT MORE Waveform Operating menu VAR GAIN ON VAR GAIN OFF READOUT ON READOUT OFF MENU LEFT MENU RIGHT MORE Vector Operating menu

Figure 2­4: Waveform/Vector display mode Operating menus page 1 The following first page of Operating menu selections appear for the Waveform and Vector display modes. See Figure 2­4.
Alarm On/Off. For the Waveform display mode only, this selection

toggles the Amplitude Alarm mode on and off. The Amplitude Alarm is explained on page 2­7.
Phase Adjust. For the Vector display mode only, this selection assigns

control of vector phase to the GP Knob.
Var Gain On/Off. This selection assigns control of variable gain to the

GP Knob for the current display mode if the Variable Gain mode is off or if the mode is on and the GP Knob has been assigned to another function. This selection turns variable gain off if the mode is on and the GP Knob is currently assigned to variable gain control.
Readout On/Off. This selection toggles all on-screen readout messages

on and off, but the menus and graticules remain visible.
Menu Left/Right. This selection toggles the menu position between the

left and right sides of the display.
More. This selection opens the second page of the Operating menu and only appears when the Line Select mode is turned on.

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Using the Menus

LINE NUM ADJ LINE 46 F 1 FIELDS 1 3 FIELDS 2 4 ALL FIELDS UPDATE FAST UPDATE SLOW

MORE

Figure 2­5: Waveform/Vector display mode Operating menu page 2 The following additional Operating menu selections appear for the Waveform, Vector, and Waveform-in-Picture display modes when the Line Select mode is turned on. See Figure 2­5.
Line Num Adj. This selection assigns control of selecting which video

line to display to the GP Knob. The currently selected line and field numbers appear on the second line of this menu-selection display and in the on-screen readout. You can select from lines 6 to 262 for NTSC and lines 3 to 312 for PAL.
Fields. This selection toggles through three choices of video fields

from which to display the selected line (fields 1 and 3, fields 2 and 4, or all fields). The current field number selection appears in the on-screen readout when the Line Select mode is turned on.
Update Fast/Slow. This selection toggles the sample rate for the

selected line between fast and slow.
More. This selection opens the first page of the Operating menu.

Presets Menu The Presets menu allows you to save or recall up to four front-panel and menu setups. The Presets menu is entered by pressing the front-panel Presets button and is the same for all display modes.

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Using the Menus

RECALL 1 RECALL 2 RECALL 3 RECALL 4 STORE MENU Page 1 Figure 2­6: Presets menu

STORE 1 STORE 2 STORE 3 STORE 4 RECALL MENU Page 2

The following Presets menu selections appear for all display modes. See Figure 2­6.
Recall/Store 1­4. These selections recall or store the front-panel and

menu settings in memory slots 1 through 4.
Store/Recall Menu. These selections toggle between the Presets Recall and Presets Store menus.

Display Menu The Display menu is entered by pressing the front-panel Display button. The menu selections on the first two pages of the menu are identical in the Waveform and Vector display modes, with the changes affecting both modes. The Waveform display mode has a third menu page appear with selections for adjusting the Amplitude Alarm display when that mode has been turned on.

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Using the Menus

D INTENSITY HUE COLOR BACKGROUND MORE

Figure 2­7: Waveform/Vector display mode Display menu page 1 The following menu selections appear on the first page of the Display menu. See Figure 2­7.
Intensity. This selection assigns control of signal intensity to the GP Knob. The signal intensity level can be adjusted from and applies to the Waveform, Vector, and Waveform-in-Picture display modes. Signal intensity is the default function assigned to the GP Knob when the Waveform display mode is selected. Hue. This selection assigns control of signal hue to the GP Knob. Hue works in conjunction with the Color menu selection to set the desired signal appearance. The signal hue can be adjusted from and applies to the Waveform, Vector, or Waveform-in-Picture display modes. Color. Assigns control of signal color to the GP Knob. Color works in conjunction with the Hue menu selection to set the desired signal appearance. The signal color can be adjusted from and applies to the Waveform, Vector, or Waveform-in-Picture display modes. Background. This selection assigns control of the display background

intensity to the GP Knob. The background can be adjusted from and applies to all display modes.
More. This selection opens the second page of the Display menu.

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Using the Menus

GRAT INTENSITY GRAT HUE GRAT COLOR

MORE

Figure 2­8: Waveform/Vector display mode Display menu page 2 The following menu selections appear on the second page of the Display menu. See Figure 2­8.
Grat Intens. This selection assigns control of graticule intensity to the

GP Knob. The graticule intensity can be adjusted from and applies to all display modes.
Grat Hue. This selection assigns control of graticule hue to the

GP Knob. Graticule hue works in conjunction with graticule color to set the desired graticule appearance. The graticule hue can be adjusted from and applies to all display modes.
Grat Color. This selection assigns control of graticule color to the

GP Knob. Graticule color works in conjunction with graticule hue to set the desired graticule appearance. The graticule color can be adjusted from and applies to all display modes.
More. This selection opens the first page of the Display menu, or the

following third page if the Waveform display mode is selected and the Amplitude Alarm is turned on.

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Using the Menus

ALARM INTENSITY ALARM HUE ALARM COLOR

MORE

Figure 2­9: Waveform display mode Display menu page 3 The Alarm Intens, Alarm Hue, and Alarm Color selections only apply to the amplitude alarm portion of the waveform display in the Waveform and Waveform-in-Picture display modes. See Figure 2­9. The Amplitude Alarm mode is explained on page 2­7.
Alarm Intens. This selection assigns control of alarm intensity to the

GP Knob.
Alarm Hue. This selection assigns control of alarm hue to the

GP Knob. Alarm hue works in conjunction with alarm color to set the desired alarm appearance.
Alarm Color. This selection assigns control of alarm color to the

GP Knob. Alarm color works in conjunction with alarm hue to set the desired alarm appearance.
More. This selection opens the first page of the Display menu.

Configure Menu The Configure menu is entered by pressing the front-panel Config button. The menu selections in the Configure menu are identical in all display modes, with the changes affecting the appropriate display modes.

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Using the Menus

NTSC STANDARD PAL STANDARD CLAMP ON CLAMP OFF FAST CLAMP SLOW CLAMP PAL PLUS V ON PAL PLUS V OFF MORE

Figure 2­10: Waveform/Vector display mode Configure menu page 1 The following menu selections appear on the first page of the Configure menu. See Figure 2­10.
NTSC/PAL Standard. This selection toggles the instrument measure-

ment standard between NTSC and PAL video standards.
Clamp On/Off. This selection toggles the DC Restorer clamp on and off. Fast/Slow Clamp. This selection toggles the DC Restorer clamp speed between fast and slow. The slow setting will clamp while displaying any signal hum. PAL Plus V On/Off. This selection toggles the PAL Plus V mode on and

off. When the mode is on, the phase reference of the ­V lines of the vector display is inverted and then shown as on overlay on the +V lines to provide a comparison display.
More. This selection opens the second page of the Configure menu.

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Using the Menus

NTSC ALT V ON NTSC ALT V OFF GRATICULE ON GRATICULE OFF SYNC MESSAGE ON SYNC MESSAGE OFF WIDE SCREEN ON WIDE SCREEN OFF MORE

Figure 2­11: Waveform/Vector display mode Configure menu page 2 The following menu selections appear on the second page of the Configure menu. See Figure 2­11.
NTSC Alt V On/Off. This selection toggles the NTSC Alt V mode on

and off. This mode is similar in function to the PAL Plus V mode, but it is only used during calibration of the instrument. Refer to the WVR500 Waveform/Vector Monitor Service Manual for instrument calibration information.
Graticule On/Off. This selection toggles the measurement graticules on

and off.
Sync Message On/Off. This selection toggles the Missing Sync and

Bad Sync on-screen readout messages on and off. If this selection is turned on but the Readout On/Off menu selection in the Operating menu is set to Off, the sync messages will not appear.
Wide Screen On/Off. This selection toggles the aspect ratio of the

display between 4:3 (off) and 16:9 (on). The Wide Screen On selection supports high-definition television displays.
More. This selection opens the third page of the Configure menu.

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Using the Menus

SETUP NO SETUP 75% BARS 100% BARS SOFTWARE VERSION CALIBRATE MORE

Figure 2­12: Waveform/Vector display mode Configure menu page 3 The following menu selections apply to Figure 2­12.
Setup/No Setup. This selection toggles the instrument between

accepting NTSC signals with or without setup.
75%/100% Bars. This selection toggles the instrument between

correctly processing 75% or 100% amplitude color bar signals.
Software Version. This selection displays the current software version of the instrument just below the menu Software Version text. Calibrate. This selection only appears after the Calibration mode has

been internally enabled by placing a jumper on A2J27. Refer to the WVR500 Waveform/Vector Monitor Service Manual for detailed calibration information.
More. This selection opens the first page of the Configure menu.

Picture Display Mode Menus
The Picture display mode Operating and Display menus are described on the following pages. The Presets and Configure menus are identical to the Waveform/Vector display mode Presets and Configure menus defined earlier in this section. 2­22 WVR500 User Manual

Using the Menus

Operating Menu The Picture display mode Operating menu is entered by pressing the front-panel Menu button. The menu selections are different for NTSC and PAL. See Figure 2­13. SAFE TITLE ON SAFE TITLE OFF SAFE ACTION ON SAFE ACTION OFF TRANSPARENCY ON TRANSPARENCY OFF TRANSPARENCY ON TRANSPARENCY OFF SAFE AREA ON SAFE AREA OFF

NTSC

PAL

Figure 2­13: Picture display mode Operating menu
Safe Title On/Off. (NTSC only) This selection toggles the Safe Title

mode on and off. When this mode is on, an outline depicts the safe title portion of the display.
Safe Action On/Off. (NTSC only) This selection toggles the Safe

Action mode on and off. When this mode is on, an outline depicts the safe action portion of the display.
Safe Area On/Off. (PAL only) This selection toggles the Safe Area

mode on and off. When this mode is on, an outline depicts the safe area portion of the display.
Transparency On/Off. This selection toggles the Transparency mode on

and off. When this mode is on, the menus and safe areas become semitransparent allowing you to view the entire picture. This mode affects both the Picture and the Waveform-in-Picture display modes.

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Using the Menus

Display Menu The Picture display mode Display menu only appears after one of the Safe Title, Safe Action, or Safe Area modes has been turned on. These menu selections also appear in the Waveform and Vector display modes Display menu. See Figure 2­14. GRAT INTENSITY GRAT HUE GRAT COLOR BACKGROUND

Figure 2­14: Picture display mode Display menu
Grat Intens. This selection assigns control of graticule intensity to the

GP Knob. The graticule intensity can be adjusted from and applies to all display modes.
Grat Hue. This selection assigns control of graticule hue to the

GP Knob. Graticule hue works in conjunction with graticule color to set the desired graticule appearance. The graticule hue can be adjusted from and applies to all display modes.
Grat Color. This selection assigns control of graticule color to the

GP Knob. Graticule color works in conjunction with graticule hue to set the desired graticule appearance. The graticule color can be adjusted from and applies to all display modes.
Background. This selection assigns control of the display background

intensity to the GP Knob. The background intensity can be adjusted from and applies to all display modes.

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Using the Menus

Waveform-in-Picture Display Mode Menus
The Waveform-in-Picture display mode Operating and Display menus are described on the following pages. The Presets and Configure menus are identical to the Waveform/Vector display mode Presets and Configure menus defined earlier in this section. Operating Menu The Waveform-in-Picture display mode Operating menu is entered by pressing the front-panel Menu button. See Figure 2­15. WFM IN PICTURE VEC IN PICTURE BOTH IN PICTURE UPPER POSITION LOWER POSITION TRANSPARENCY ON TRANSPARENCY OFF MENU LEFT MENU RIGHT MORE

Figure 2­15: Waveform-in-Picture display mode Operating menu page 1
WFM/VEC/Both in Picture. This selection toggles through the display

options for the Waveform-in-Picture display mode. The waveform and vector displays can be displayed singly or at the same time.
Upper/Lower Position. This selection toggles the position of the

reduced waveform and vector displays between the upper and lower halves of the display.
Transparency On/Off. This selection toggles the Transparency mode on

and off. When this mode is on, the menus and reduced waveform and vector displays become semitransparent allowing you to view the

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Using the Menus

entire picture. This mode affects both the Picture and the Waveformin-Picture display modes.
Menu Left/Right. This selection toggles the menu position between the

left and right sides of the display.
More. This selection opens the second page of the Operating menu.

ALARM ON ALARM OFF WFM VAR GAIN ON WFM VAR GAIN OFF VEC VAR GAIN ON VEC VAR GAIN OFF

MORE

Figure 2­16: Waveform-in-Picture display mode Operating menu page 2
Alarm On/Off. For the Waveform display only, this selection toggles the Amplitude Alarm mode on and off. The Amplitude Alarm is explained on page 2­7. WFM Var Gain On/Off. This selection assigns control of variable gain

for the waveform display to the GP Knob.
VEC Var Gain On/Off. This selection assigns control of variable gain for

the vector display to the GP Knob.
More. This selection opens the first page of the Operating menu.

Display Menu The Waveform-in-Picture display mode Display menu is identical to the Waveform display mode Display menu described earlier in this section.

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Making Measurements
Making Measurements contains measurement graticule descriptions, followed by measurement procedures. This monitor uses a proprietary rasterizer to display the graticules. The internal graticule scales are on the same plane as the CRT phosphor, eliminating parallax errors. Graticule intensity and color can be adjusted through the Display menu to provide optimum display visibility and contrast.

Waveform Graticules
The following two versions of the waveform graticule are illustrated in Figures 2­17 and 2­18: H NTSC composite video graticule H PAL (CCIR) composite graticule The instrument monitoring standard, set in the Configure menu, selects which measurement graticule is displayed. Horizontal Scale The 0 IRE (0.3 V PAL) graticule line is divided into 12 major divisions. Each division represents a unit of time determined by the Sweep and Mag settings. Line sweep rates appear in the on-screen readout, and are as follows:
Sweep Rate 1 Line 2 Line Time/Div 5 ms/div 10 ms/div Mag On 0.5 ms/div 1 ms/div

In 2 Field sweep with Mag on, the signal is magnified by X20, and the entire vertical interval can be viewed.

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Making Measurements

Vertical Scales The NTSC graticule is scaled in IRE units and extends from ­40 to +120 IRE, in 10 IRE increments. Black level setup is denoted by a dashed line at 7.5 IRE. The CCIR (PAL) graticule is scaled in volts and extends from 0 to 1.2 V, in 0.1 V increments.
120 100 80 60 40 20 0 ­20 ­40

100% White level

7.5 IRE setup Baseline

Sync tip

Figure 2­17: NTSC waveform graticule
1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4

100% White level

Baseline
0.2 0.1 0

Sync tip

Figure 2­18: PAL waveform graticule 2­28 WVR500 User Manual

Making Measurements

Making Waveform Measurements
Standard Measurements Standard amplitude and timing measurements of the signal are made by positioning the waveform on the graticule. The position and magnification controls aid in measuring small portions of the waveform. Peak White With the blanking signal level on the graticule baseline, the amplitude of the 100% white reference of a color bar should be on the 100 IRE (1.0 V PAL) graticule line. The Waveform display mode Amplitude Alarm highlights any portion of the signal which exceeds the 100 IRE (1.0 V PAL) graticule line. The Amplitude Alarm mode is turned on in the Operating menu of the Waveform and Waveform-in-Picture display modes, and the alarm's appearance is adjusted in the Display menu.

Vector Graticules
The vector display permits measurements of hue in terms of the relative phase of the chrominance signal with respect to the color burst. Relative amplitude of chrominance to burst is expressed in terms of the displacement from center (radial dimension of amplitude). The following two versions of the vector graticule are illustrated in Figures 2­19 and 2­20: H NTSC composite vector graticule H PAL (CCIR) composite vector graticule The instrument monitoring standard, set in the Configure menu, selects which graticule is displayed.

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Making Measurements

Red Chrominance gain and phase target boxes Yellow Burst 180° Differential gain and phase measurement box

90° Magenta Color reference

I Yl

R Y R Mg Q B Y B
0° ­3 dB point

Q G Cy I

Blue

100% and 75% Burst targets

Green

Cyan

Figure 2­19: NTSC vector graticule

90° Red +V chrominance gain and phase target boxes Yellow 180° Differential gain and phase measurement box

Magenta Color reference

g Yl yl G

R

V cy

Mg b U B

­V chrominance gain and phase target boxes

0° ­3 dB point

Cy r

mg

Blue

100% and 75% Burst targets

Green

Cyan

Figure 2­20: PAL vector graticule

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Chrominance Vector Targets The chrominance vectors terminate in a system of graticule targets consisting of two boxes (a small box inside a large box). A sample target is shown in Figure 2­21. The dimensions of the large boxes represent ±10° centered on the exact chrominance phase and ±20% of chrominance amplitude centered around standard amplitude. The dimensions of the smaller boxes represent ±2.5° and ±2.5 IRE (±3° and ±5% PAL) of chrominance amplitude. For the PAL graticule, each chrominance vector related to the +V burst terminates in targets consisting of two boxes (a small box inside a large box). The vectors associated with the ­V burst terminate in the targets consisting of smaller boxes only.

Figure 2­21: Vector targets ­ NTSC values (PAL values in parentheses)

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Differential Phase and Gain Measurement Box Differential gain (dG) and differential phase (d) measurements use the graticule markings located at the outer edge of the B-Y or U axis 180° line. See Figure 2­22.

10° d 2° d

Figure 2­22: Differential gain and phase measurement box

Making Vector Measurements
Chroma Bandwidth The horizontal and vertical axes of the vector graticule contain markings for checking chroma bandwidth. A subcarrier frequency sine wave (whose amplitude places it on the outer compass rose) is used as a reference. When the frequency is changed, the diameter of the circle should reduce in size. At a point equal to 70.7% of full amplitude (­3 dB), there are gaps in the horizontal and vertical axes. This calibration aid makes it possible to check the ­3 dB points of the demodulator output amplifiers.

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Tutorial
This tutorial is designed for operator familiarization and for checking basic instrument operation (not measurement quantities or specifications). This tutorial assumes that you have read the Functional Overview and Using the Menus sections of this manual and understand the basics of instrument operation. If the performing of this procedure reveals improper instrument operation, first check the operation of the associated equipment. If the associated equipment is operating normally, refer the monitor to qualified service personnel for repair or adjustment. 1. Connect the equipment listed in Table 2­1 as described below. a. Connect the WVR500 monitor to an appropriate AC power source. b. Connect the output of the television signal generator to the CH-A input. c. Connect the other side of the CH-A loopthrough to the Ext Ref input. d. Terminate the remaining side of the Ext Ref loopthrough in 75 W. e. Connect a cable from the WVR500 monitor Video Out connector to the input of the picture monitor. f. Terminate the picture monitor input in 75 W. g. Set the signal generator for a 75% color bars output. 2. Initialize the front-panel controls and menu selections. a. Select the Waveform display mode. b. Select CH A Input, 2 Line Sweep, Flat Filter, and Int Ref. Notice that the front-panel indicators light when these selections are made.

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Tutorial

Table 2­1: Tutorial required equipment
Equipment Television signal generator with the following signals: composite color bars; black burst or comparable signal with sync and burst Coaxial Cable, 75 W (3) 75 W Terminator, end-line (2) Picture monitor for the appropriate video standard (NTSC or PAL) Example Tektronix TSG 100 Signal Generator (NTSC) Tektronix TSG 111 Signal Generator (PAL) 42-inch RG59U (Tektronix Part No. 012-0159-00) Tektronix Part No. 011-0102-00 Generic picture monitor with BNC video input connector

c. Turn Line Sel, Mag, and Gain X5 off if they are turned on. d. Enter the Operating menu and select Alarm Off, Var Gain Off, and Readout On. e. Enter the Configure menu and select the monitoring standard (NTSC or PAL), PAL Plus V Off, NTSC Alt V Off, Graticule On, Setup, and 75% Bars. f. Clear the menu display. 3. Adjust the display appearance. a. Use the position controls to place the waveform on the graticule baseline and to center the display. Notice that Intensity is displayed in the readout after the knob icon. This indicates that the GP Knob is assigned to adjust signal intensity (default function for the Waveform display mode). b. Use the GP Knob to adjust the signal intensity to the desired level.

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c. Enter the Display menu and select Grat Intens. Notice that a knob icon appears by the menu selection indicating that the GP Knob is now assigned control of this function and that Grat Intens appears in the readout. d. Adjust the GP Knob for the desired graticule illumination. e. Toggle between Grat Color and Grat Hue in the menu to adjust the graticule color to a desired setting. The Grat Hue and Grat Color adjustments work in conjunction to set the graticule appearance. The graticule color setting also affects the vector display graticule and safe area outlines in the Picture display mode. f. Press the Clear button once to exit the Display menu. Notice that the GP Knob retains control of the Grat Hue or Grat Color function that was last selected, as indicated by the readout. g. Press the Clear button a second time to return the GP Knob to signal intensity control. The display should appear similar to Figure 2­23.

100 80 60 40 20 0 ­20 ­40

CH A NTSC INT

DINTENSITY

10US/D

TEK

Figure 2­23: Waveform NTSC 2 Line sweep display

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Tutorial

4. Select the input channel. a. Press the Input button to toggle the display from the CH A to the CHB Input (no si