Tektronix WVR500 Service Manual

Service Manual

WVR500
Waveform/Vector Monitor

070-8897-01

Warning

The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to per­forming service.

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

WARRANTY

T ektronix 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,
T ektronix, 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 T ektronix, with shipping charges prepaid.
T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
T ektronix 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix 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-T ektronix 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 P ARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO
REP AIR 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

 Priced well below the cost of a single repair or calibration
 Avoid delays for service by eliminating the need for separate purchase authorizations from your company
 Eliminates unexpected service expenses

For Information and Ordering

For more information or to order Service Assurance, contact your T ektronix representative and provide the information
below . Service Assurance may not be available in locations outside the United States of America.

Name VISA or Master Card number and expiration
Company date or purchase order number
Address Repair Protection (1,2, or 3 years)
City , State, Postal code Calibration Services (1,2,3,4, or 5 years)
Country Instrument model and serial number
Phone Instrument purchase date

Table of Contents

Specifications

Operating Information

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

Service Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Characteristics T ables 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mechanical Installation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Installation 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Instructions 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel Controls 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Special Operating Modes 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

On-Screen Readout 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu Operation 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation

Theory of Operation 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification

Performance Verification 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Equipment List 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Short-Form Performance Verification 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Long-Form Performance Verification 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustment Procedures

Adjustment Procedures 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Equipment List 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Short-Form Adjustment Procedures 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Long-Form Adjustment Procedures 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WVR500 Waveform/Vector Monitor Service Manual

i

Table of Contents

Maintenance

Options

Replaceable Parts

Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Options 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preparation 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preventive Maintenance 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repackaging Instructions 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal and Replacement 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting Procedures 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Required Equipment 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting Flowchart 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Cord Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replaceable Parts 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering Information 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

WVR500 Waveform/Vector Monitor Service Manual

List of Figures

Table of Contents

Figure 2–1: The TVGF13 side-by-side rack adapter 2–2. . . . . . . . . . . . . .

Figure 2–2: The TVGF14 dual half-rack adapter 2–2. . . . . . . . . . . . . . . .

Figure 2–3: Operational jumper locations. 2–5. . . . . . . . . . . . . . . . . . . . . .

Figure 2–4: WVR500 monitor rear panel 2–5. . . . . . . . . . . . . . . . . . . . . . .

Figure 2–5: WVR500 monitor front panel 2–8. . . . . . . . . . . . . . . . . . . . . .

Figure 2–6: On-screen readout display 2–12. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2–7: Typical menu display 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–1: Front Panel board block diagram 3–1. . . . . . . . . . . . . . . . . . .

Figure 3–2: Partial Main board block diagram 3–2. . . . . . . . . . . . . . . . . .

Figure 3–3: Subcarrier generator block diagram 3–3. . . . . . . . . . . . . . . .

Figure 3–4: Vector demodulators block diagram 3–3. . . . . . . . . . . . . . . . .

Figure 3–5: Microprocessor circuitry block diagram 3–4. . . . . . . . . . . . .

Figure 3–6: Analog control ciruitry block diagram 3–5. . . . . . . . . . . . . . .

Figure 3–7: FPGA and RAMDAC circuitry block diagram 3–6. . . . . . . .

Figure 3–8: Rasterizer block diagram 3–7. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3–9: Video out and power supply block diagram 3–8. . . . . . . . . . .

Figure 3–10: Serial Filter board block diagram 3–8. . . . . . . . . . . . . . . . . .

Figure 4–1: –3 dB marks on the vector graticule 4–16. . . . . . . . . . . . . . . . .

Figure 5–1: Location of the Calibration Enable jumper 5–4. . . . . . . . . . .

Figure 5–2: NTSC graticule showing the correct adjustment of

vector gain and symmetry 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–1: Removing the top cover 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–2: Removing the front-panel assembly 6–11. . . . . . . . . . . . . . . . .

Figure 6–3: Removing the Front Panel board 6–10. . . . . . . . . . . . . . . . . . .

Figure 6–4: Removing the power supply 6–10. . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–5: Removing the Serial Filter board 6–12. . . . . . . . . . . . . . . . . . .

Figure 6–6: Removing the line filter 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–7: Main board BNC connectors 6–14. . . . . . . . . . . . . . . . . . . . . . .

Figure 6–8: Removing the Main board 6–15. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–9: A2 and A3 circuit board test point locations 6–17. . . . . . . . . .

Figure 6–10: Troubleshooting flowchart 6–18. . . . . . . . . . . . . . . . . . . . . . . .

WVR500 Waveform/Vector Monitor Service Manual

iii

Table of Contents

List of Tables

Figure 8–1: WVR 500 monitor exploded view 8–5. . . . . . . . . . . . . . . . . . .

Table 1–1: Vertical deflection system 1–3. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–2: DC restoration 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–3: Horizontal deflection system 1–5. . . . . . . . . . . . . . . . . . . . . . . .

Table 1–4: Synchronization 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–5: Vector mode 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–6: Power source 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–7: Physical characteristics 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–8: Environmental characteristics 1–8. . . . . . . . . . . . . . . . . . . . . .

Table 1–9: Certifications and compliances 1–9. . . . . . . . . . . . . . . . . . . . . .

Table 2–1: Operational jumper selections 2–4. . . . . . . . . . . . . . . . . . . . . .

Table 4–1: Verification required test equipment 4–1. . . . . . . . . . . . . . . . .

Table 4–2: Short-form performance verification 4–3. . . . . . . . . . . . . . . .

Table 5–1: Adjustment required test equipment 5–1. . . . . . . . . . . . . . . . .

Table 5–2: Short-form adjustment procedures 5–3. . . . . . . . . . . . . . . . . .

Table 5–3: Power supply test point voltages 5–5. . . . . . . . . . . . . . . . . . . .

Table 6–1: Required tools for module removal and replacement 6–7. . . .

Table 6–2: Required equipment for troubleshooting 6–17. . . . . . . . . . . . .

Table 8–1: Replaceable parts list column descriptions 8–2. . . . . . . . . . . .

iv

WVR500 Waveform/Vector Monitor Service Manual

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.

Only qualified personnel should perform service procedures.

Injury Precautions

Use Proper Power Cord. To avoid fire hazard, use only the power cord specified

for this product.
Avoid Electric Overload. To avoid electric shock or fire hazard, do not apply a

voltage to a terminal that is outside the range specified for that terminal.
Avoid Overvoltage. To avoid electric shock or fire hazard, do not apply potential

to any terminal, including the common terminal, that varies from ground by
more than the maximum rating for that terminal.

Avoid Electric Shock. To avoid injury or loss of life, 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.

Do Not Operate Without Covers. To avoid electric shock or fire hazard, do not
operate this product with covers or panels removed.

Use Proper Fuse. To avoid fire hazard, use only the fuse type and rating specified
for this product.

Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not operate
this product in wet or damp conditions.

Do Not Operate in an Explosive Atmosphere. To avoid injury or fire hazard, do not
operate this product in an explosive atmosphere.

Symbols and Terms

WVR500 Waveform/Vector Monitor Service Manual

T erms 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.

v

General Safety Summary

T erms 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. The following symbols may appear on the product:

Certifications and

Compliances

DANGER

High Voltage

Protective Ground

(Earth) T erminal

ATTENTION

Refer to Manual

Double

Insulated

Refer to the specifications section for a listing of certifications and compliances
that apply to this product.

vi

WVR500 Waveform/Vector Monitor Service Manual

Service Safety Summary

Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service

procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this

product unless another person capable of rendering first aid and resuscitation is
present.

Disconnect Power. To avoid electric shock, disconnect the main power by means
of the power cord or, if provided, the power switch.

Use Caution When Servicing the CRT. To avoid electric shock or injury, use
extreme caution when handling the CRT. Only qualified personnel familiar with
CRT servicing procedures and precautions should remove or install the CRT.

CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.

Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.

To avoid electric shock, do not touch exposed connections.

WVR500 Waveform/Vector Monitor Service Manual

vii

Service Safety Summary

viii

WVR500 Waveform/Vector Monitor Service Manual

Preface

This manual provides servicing information for the WVR500 monitor. Material
found in this volume is targeted at the service technician; detailed operating
information can be found in the WVR500 Waveform/Vector Monitor User
Manual.

Service Level Supported. This manual supports only Module Level (for module
exchange) servicing. Module Level servicing utilizes the block diagram and its
descriptions to isolate a problem to the circuits on a particular etched circuit
board.

Specific Content. Some of the information in this manual is shared with the user
manual; however, the depth of the material depends on the potential use. A quick
comparison will reveal that there are installation instructions in both manuals,
along with specifications, servicing, and operating instructions.

The operating instructions in the user manual are much more detailed than those
in the service manual. The need for a service technician is considerably less than
that of an end user. If the operating instructions in this manual are not complete
enough, please refer to the user manual for more detailed instructions.

The specifications contained in the Specifications section of this manual should
be used by the servicing technician. The specification tables contain step
numbers that cross reference to the Performance Verification section step
numbers to make it possible to document the test methods used to verify the
accuracy of the instrument.

Sections of this manual include the replaceable parts list, troubleshooting
procedures, and removal and replace procedures needed to isolate and replace
faulty modules. Replacement part ordering information can be found in the
Replaceable Parts section of this manual.

WVR500 Waveform/Vector Monitor Service Manual

ix

Preface

Contacting Tektronix

Product
Support

Service
Support

For other
information

To write us Tektronix, Inc.

For application-oriented questions about a Tektronix measure­ment product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time

Or contact us by e-mail:
[e-mail]

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

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

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

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

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

x

WVR500 Waveform/Vector Monitor Service Manual

Specifications

Specifications

Product Description

This section contains a brief functional description of the WVR500 monitor,
followed by the characteristics tables.

The Tektronix WVR500 monitor is a rasterizing television waveform/vector
monitor which outputs a display signal to a remote monitor or video switcher.
It has dual standard (NTSC and PAL) capability with the functionality of a
waveform monitor, vectorscope, and picture monitor. The instrument is 8 1/2
inch wide by 1 1/2 inch high by 17 inches long, weighing 4 1/2 pounds, fitting
the standard half-rack applications. The instrument can be powered from AC
lines ranging from 90-250 V.

The WVR500 monitor uses a proprietary rasterizer which displays analog-like
waveforms and vectors on the remote monitor simultaneously with the appropri­ate measurement graticules. The rasterized waveform and vector displays can fill
the entire screen or be reduced to 1/4 sized windows overlaying the picture
monitor display. The picture monitor display cannot be resized.

Instrument operation is controlled by a microprocessor which polls the front-pan­el switches. The front-panel switches are the momentary touch type, several of
which have lighted functional indicators. Many of the monitoring functions are
selected through the on-screen menus, which are entered by pressing front-panel
buttons.

Displays can come from two channels of unterminated composite video input
loopthrough connectors on the rear panel. An external reference input allows for
the connection of an external sync signal. The rear-panel remote connector
allows for full instrument operation from a remote location.

The Waveform display mode provides three standard sweep rates: 1 Line
(5 ms/Div), 2 Line (10 ms/Div), and 2 Field. The line-rate sweeps can be
magnified X10 to additional sweep rates: 1 Line Mag (0.5 ms/Div), and 2 Line
Mag (1 ms/Div). The 2 Field sweep is magnified by approximately X20. Vertical
gain is either fixed at X1 or X5, or variable from 50% to 120% of the input
signal amplitude. The signal filter selections are Flat (no filter) and Luminance
(low pass filter), which can be displayed separately or in a parade display in the
2 Line and 2 Field sweeps. The Line Select mode allows specific lines to be
viewed. The Amplitude Alarm mode provides automatic video level monitoring
by highlighting the portion of the waveform exceeding the 100 IRE (1.0 V PAL)
graticule line.

WVR500 Waveform/Vector Monitor Service Manual

1–1

Specifications

The Vectorscope display mode displays signals with the standard vectorscope
color bars amplitude and phase relationships. The vector display can also be used
to make differential gain and phase measurements. The +V display (PAL only)
overlays the –V axis on the +V axis to check the PAL system color encoders.
A full 360_ digital phase shifter, with 75% and 100% color bars settings, and
variable gain are provided.

The Picture Monitor display mode displays the video input signal as a picture.
The brightness, contrast, hue, and chroma of the display are set internally and are
not adjustable.

The Waveform-in-Picture display mode displays the Waveform Monitor and/or
the Vectorscope displays in 1/4-screen sized windows overlaying the Picture
Monitor display. The reduced displays can be made semi-transparent for full
viewing of the Picture display.

Options

Accessories

User Interface

Characteristics Tables

Refer to the Options section for a list of the available options for the WVR500
monitor.

Refer to the Replaceable Parts list for a list of the Standard and Optional
accessories.

Many of the instrument monitoring parameters are configured through the menu
system. The
menu access, while the numbered buttons are used to make selections from the
displayed menus. The large unlabeled center knob is called the General Purpose
(GP) Knob, and is assigned control of monitoring functions through the menu
system. Instructions on how to make menu selections begin on page 2–12.

The current setting of several of the front-panel controls are displayed in the
on-screen readout. A description of the on-screen readout begins on page 2–11.

The tables that follow specify instrument electrical characteristics, mechanical
characteristics, environmental characteristics, and certification. The tables are
logically grouped under specific functions, beginning with video input and
vertical channel specifications and ending with the instrument’s certifications.

MENU, PRESETS, DISPLAY, CONFIG, and CLEAR buttons control

1–2

Categories

Each table consists of a column that identifies the characteristics that are defined
by the entries in the description column. A single item in the category column
might have multiple description items, which could include performance
requirements, reference information, and performance verification step numbers.

WVR500 Waveform/Vector Monitor Service Manual

Specifications

Descriptions

The second column of the two column format contains all of the descriptive
material about the listed characteristic. In addition, the performance verification
procedure step number, used to verify the characteristic, is also in this column.
Because this instrument is designed to operate on both PAL and NTSC stan­dards, some of the tolerances are defined in millivolts and IRE units. In these
dual-value tolerances, the PAL values appear in parentheses.

Performance Requirements (Req). Items with this designation are critical to
instrument performance. In most cases they have a tolerance given and have a
performance verification step number accompanying them. However, there are a
few areas where instrument operation verifies that this performance requirement
is met.

Reference Information (RI). This is information about the operation of the
instrument that is important enough to place it with the performance require­ments. In some cases there may be a tolerance listed, but these should be
considered as typical, not absolute.

Performance Verification Step. This item identifies the step number of the
Performance Verification procedure, located in Section 4, which tests the listed
requirement. Section 5 contains calibration information, if instrument readjust­ment becomes necessary.

T able 1–1: Vertical deflection system

Category Description

Deflection Factor Req: 1 V Full Scale: 1 V input displayed within 1% of 140 IRE (1.0 V PAL).

RI: Flat filter selected.

Req: X5 Gain: Gain Accuracy ±5%.

RI: 1 V input signal.

Req: X5 Gain Registration: ≤1 major division of vertical shift from baseline between

unmagnified and magnified signal.

Req: Variable Gain Range: Input signals between 0.8 V and 2 V can be adjusted to

140 IRE (1.0 V PAL) display. 160 mV and 400 mV for X5 Gain.

Req: Position Range: 1 V signal can be positioned so that peak white and sync tip can

be placed at blanking level, with the DC Restorer Clamp on, regardless of gain
setting.

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Specifications

T able 1–1: Vertical deflection system (cont.)

Category Description

Frequency Response Req: 1 V Full Scale: 50 kHz to 6 MHz within 2% of response at 50 kHz.

RI: Specifications apply for full screen height video input signal, with Variable

Gain off, and Flat filter selected.

Req: X5 Gain: 50 kHz to 6 MHz within 5% of response at 50 kHz.

RI: Flat filter selected.

Req: Luminance Filter: ≥30 dB attenuation at 4.00 MHz.

RI: Response at 15 kHz does not vary between Flat and Luminance filters by

more than 1%.

Transient Response RI: Specifications apply for full screen height video input signal, with Variable

Gain off, 1 V Full Scale or X5 Gain, using the 2T pulse and 2T bar.

Req: Pulse-to-Bar Ratio: X1: 0.99:1 to 1.01:1.

X5: 0.98:1 to 1.02:1.

Req: Field Rate Square Wave or V ertical Window Tilt: ≤1%.
Req: 25 s Bar Tilt: ≤1%.
Req: Overscan: ≤2% variation in baseline of 100 IRE (700 mV P AL) 12.5T (20T PAL)

modulated pulse as it is positioned over the middle 80% of the screen.

RI: Preshoot: ≤1%.
RI: Overshoot: X1: ≤2%.

X5: ≤4%.

RI: Ringing: X1: ≤2%.

X5: ≤4%.

Maximum Absolute Input Level Req: ±5 VDC + peak AC.

RI: Displays in excess of 200 IRE (1.428 V PAL) may cause frequency response

aberrations.

RI: Maximum Operating Input V oltage: Peak AC + DC should be within +8.0 V

and –5.6 V for proper operation.

DC Input Impedance Req: ≥15 k.

RI: Unterminated.

Return Loss (75 ) Req: ≥40 dB from 50 kHz to 6 MHz.

RI: CH-A and CH-B input channels, loopthrough terminated in 75 . Input in use

or not in use, instrument power on or off, all deflection factor settings.

Loopthrough Isolation RI: ≥70 dB of isolation between loopthroughs. Measured at FSC between CH-A,

CH-B, and EXT REF inputs.

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WVR500 Waveform/Vector Monitor Service Manual

Specifications

T able 1–1: Vertical deflection system (cont.)

Category Description

Crosstalk Between Channels RI: ≥70 dB of isolation between channels. Measured at FSC between CH-A,

CH-B, and EXT REF inputs.

Video Out RI: Differential Gain (50% APL): Within 1% with a 140 IRE (1.0 V PAL) unit

display .

RI: Differential Phase (50% APL): Within 1° with a 140 IRE (1.0 V PAL) unit

display.

Req: Return Loss (75 ): ≥30 dB from 50 kHz to 6 MHz.

RI: With the instrument turned on.

Req: Input to Video Out Gain Ratio: 1:1 ±5% @ 15 kHz.

RI: Picture display mode.

T able 1–2: DC restoration

Category Description

DC Restorer Clamp Time RI: Back Porch.
Frequency Response at 60 Hz (50 Hz PAL) Req: Attenuation of 60 Hz (50 Hz PAL) on Input signal:

Slow Mode – ≤20%.
Fast Mode – ≥90%.

Req: Blanking Level Shift with 10% to 90% APL Change: APL changes from 50% to

either 10% or 90% will cause blanking level shift of 1 IRE unit (7.14 mV PAL) or
less.

Req: Blanking Level Shift Due to Presence or Absence of Burst: 1 IRE unit (7.14 mV

PAL) or less shift from no color burst to presence of color burst.

T able 1–3: Horizontal deflection system

Category Description

Sweep Req: Sweep will occur in all Horizontal mode settings with or without synchronization.
2FLD Sweep Repetition Rate RI: Displays 2 full fields, including the field rate sync between them.
2FLD Sweep Magnification RI: Approximately X20.
1LINE Sweep Repetition Rate Req: Equal to the line-rate of applied video or external sync.
2LINE Sweep Repetition Rate Req: Equal to half the line-rate of applied video or external sync.
Sweep Length RI: 2LINE and 2FLD sweep length is nominally 12.5 divisions.

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Specifications

T able 1–3: Horizontal deflection system (cont.)

Category Description

Timing Accuracy RI: All timing and linearity specifications exclude the first and last major divisions

of the unmagnified display.

Req: 10 ms/div. (2LINE): Within 2%.
Req: 5 ms/div. (1LINE): Within 2%.
Req: 1 ms/div. (2LINE + MAG): Within 2%.
Req: 0.5 ms/div . (1LINE + MAG): Within 3%.

Integral Linearity Req: Within 1%.

RI: Measured between the 10 ms and 110 ms points on the 10 ms/division sweep.

Sweep Magnifier Registration RI: Magnification occurs about the center of the screen.
Horizontal Position Req: Any portion of a synchronized video sweep can be positioned on screen in all

sweep modes.

T able 1–4: Synchronization

Category

Input Requirements Req: Internal Reference, NTSC: Composite video or black burst with sync amplitudes

40 IRE ±6 dB.

Req: Internal Reference, P AL: Composite video or black burst with sync amplitudes

300 mV ±6 dB.

Req: External Reference: Sync amplitude between 143 mV and 4 V will synchronize

sweeps.

EXT REF Input Req: DC Input Impedance (Unterminated): ≥15 kW.

Req: Return Loss (75 W): ≥40 dB from 50 kHz to 6 MHz.

RI: Loopthrough terminated in 75 W, instrument power on or off.
RI: Absolute Maximum Input Voltage: ±12 VDC plus peak AC.

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WVR500 Waveform/Vector Monitor Service Manual

T able 1–5: Vector mode

Category Description

Chrominance Processing Req: Chrominance Bandwidth:

Upper –3 dB Point: F
Lower –3 dB Point: F

RI: Nominal Subcarrier Frequency (FSC)

NTSC: 3.579545 MHz.
PAL: 4.43361875 MHz.

RI: +V Mode (Applicable to PAL operation only): +V-type display as selected by

front-panel menu selection. When selected, V axis is inverted at a half
line-rate to produce a single vector display.

Display RI: Vector Phase Accuracy: ±1.25. Measured with color bar signal.

RI: Vector Gain Stability: Typically ±2.5%.
RI: Quadrature Phasing: Typically ±0.5.

Subcarrier Regenerator Req: Pull-In Range

NTSC: ±50 Hz of F
PAL: ±10 Hz of F

RI: Subcarrier Regenerator free runs in absence of appropriate signal. Reference

can be burst of either the displayed signal or the external reference signal.

RI: Pull-In Time: Within 1 second, with subcarrier frequency within 50 Hz (10 Hz

for PAL) of F

Req: Phase Shift with Subcarrier Frequency Change:

NTSC: ±2° from F
PAL: ±2° from F

Req: Phase Shift with Burst Amplitude Change: ±2_ from nominal burst amplitude to

±6 dB.

RI: Internal or External burst reference.

Req: Phase Shift with Input Channel Change: ±0.5_.

RI: With EXT REF selected.

Req: Phase Shift with Variable Gain Control: ±1_as gain is varied from +3 dB to –6 dB.

RI: Phase Control Range: 360_ continuous rotation.

Req: Burst Jitter: 0.5_ rms or less.

RI: With 140 IRE (1 V PAL) composite video input. Internal or external

referenced.

Display Characteristics RI: Differential Phase: ±1_.

RI: Differential Gain: ±1%.
RI: Measured with 140 IRE (1 V PAL) linearity signal (5-step, 10-step, or Ramp)

with 40 IRE (300 mV PAL) of subcarrier.

+500 kHz, ±100 kHz.

SC

–500 kHz, ±100 kHz.

SC

.

SC

.

SC

.

SC

to (FSC +50 Hz), or FSC to (FSC – 50 Hz).

SC

to (FSC +10 Hz), or FSC to (FSC – 10 Hz).

SC

Specifications

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Specifications

T able 1–6: Power source

Category Description

Mains Voltage Range Req: 90–250 V.
Mains Frequency Range Req: 48 Hz to 66 Hz.
Power Consumption RI: 25 Watts maximum.
Power Fuse Rating Req: 250 V, 2 A, F-type.

T able 1–7: Physical characteristics

Category Description

Dimensions RI: Height: 1 3/4 inches (44.5 mm).

Width: 8 inches (203.2 mm).
Length: 18 1/2 inches (469.9 mm).

Weight RI: Approximately 4.0 lbs (approximately 1.8 kg).

T able 1–8: Environmental characteristics

Category Description

Temperature RI: Non-Operating: –55° C to +75° C.

Operating: 0° C to +50° C.

(IEC 1010-1 compliance to +40° C.)

Altitude RI: Non-Operating: To 50,000 feet.

Operating: To 15,000 feet.

(IEC 1010-1 compliance to 2000 meters.)
Equipment Type RI: Measurement (as defined in IEC 1010-1, Annex H).
Equipment Class RI: Class I (as defined in IEC 1010-1 Annex H).
Installation Category RI: Installation Category II (as defined in IEC 1010-1, Annex J). Note: Rated for

indoor use only.
Pollution Degree RI: Pollution Degree 2 (as defined in IEC 1010-1).
Vibration — Operating RI: 15 minutes each axis at 0.015 inch, frequency varied from 10–55–10 Hz in

1-minute cycles with instrument secured to vibration platform. 10 minutes

each axis at any resonant point or at 55 Hz if a resonant point is not found.

MIL-T-28800D, Paragraph 1.2.2, Class 3.
Shock — Non-Operating RI: 30 g, 1/2 sine, 11 ms duration, 3 shocks per surface (18 total).
Transportation RI: Qualified under NST A Test Procedure 1A, Category II (24 inch drop).
Humidity RI: Will operate at 95% relative humidity for up to five days.

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WVR500 Waveform/Vector Monitor Service Manual

Specifications

Table 1–9: Certifications and compliances

Category Description

EC Declaration of Conformity Compliance was demonstrated to the following specifications as listed in the Official

Journal of the European Communities:
EMC Directive 89/336/EEC:

EN 50081-1 (Emissions):

EN 55022 Class B Radiated and Conducted Emissions

EN 50082-1 (Immunity):

IEC 801-2 Electrostatic Discharge Immunity
IEC 801-3 RF Electromagnetic Field Immunity
IEC 801-4 Electrical Fast T ransient/Burst Immunity

Conditional Statements:

1. High quality shielded cables must be used to insure compliance to the
above listed standards.

Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC:

EN 61010-1 Safety requirements for electrical equipment for measurement,

control, and laboratory use. Part 1: General Requirements.

Safety Standards

U.S. Nationally Recognized
Laboratory Listing

Canadian Certification CAN/CSA C22.2 No. 231 CSA Safety Requirements for Electrical and Electronic

European Union Compliance Low Voltage Directive 73/23/EEC, Amended by 93/68/EEC.

UL1244 Standard for Electrical and Electronic Measuring and Testing Equipment.

Measuring and Test Equipment.

EN61010-1 Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use.

Additional Compliance IEC1010-1 Safety Requirements for Electrical for Measurement, Control, and

Laboratory Use.

Safety Certification Compliance

Temperature, operating +5 to +40_ C
Altitude (maximum operating) 2000 meters
Equipment Type T est and measuring
Safety Class Class I (as defined in IEC 1010–1, Annex H) – grounded product
Overvoltage Category Overvoltage Category II (as defined in IEC 1010–1, Annex J).
Pollution Degree Pollution Degree 2 (as defined in IEC 1010–1). Note: rated for indoor use only.

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Specifications

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WVR500 Waveform/Vector Monitor Service Manual

Operating Information

Installation

Mechanical Installation

This section contains mechanical and electrical installation instructions, as well
as instrument operation instructions that relate to the service of the WVR500
monitor. The Operating Instructions section begins on page 2–7.

Before installing the WVR500 monitor, refer to the Environmental Characteristic
requirements, located in Table 1–8 of the Specifications section of this manual.

All qualification testing was performed with the factory shipped cabinet
installed. To guarantee compliance with specifications, only operate the
instrument in a cabinet or rackmount adapter.

Unpacking

Cabinet

Custom Installation

Rackmounting

Save the shipping carton and packing materials (including antistatic bag) in the
event it becomes necessary to ship the instrument to a Tektronix Service Center
for service or repair. Repackaging instructions are located in the Maintenance
section of this manual.

The WVR500 monitor is shipped installed in a cabinet. There are no optional
cabinets available.

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 BNC and power-cord connections. To mount
the instrument safely, attach it to a shelf strong enough to hold its weight.

The WVR500 monitor is a half-rack width and one rack unit high instrument. 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.

Tektronix offers two optional rack adapters to rackmount the WVR500 monitor.
The rackmount adapters, TVGF13 and TVGF14, provide the proper electrical
environment, supply adequate shielding, minimize handling damage, and reduce
dust collection within the instrument. Contact your local Tektronix Field Office
or Service Center for ordering information.

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2–1

Installation

TVGF13. This rack adapter allows two Tektronix half-rack instruments to be
mounted side-by-side in a full rack application. The WVR500 monitor mounts in
either slot of the TVGF13 rack adapter. See Figure 2–1.

Figure 2–1: The TVGF13 side-by-side rack adapter

Figure 2–2: The TVGF14 dual half-rack adapter

2–2

WVR500 Waveform/Vector Monitor Service Manual