Tektronix WVR5200 Series User manual

xx
WVR5200
Waveform Rasterizer
ZZZ
Service Manual
*P077055100*
077-0551-00

WVR5200
Waveform Rasterizer
ZZZ
Service Manual
xx
www.tektronix.com
077-0551-00

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries
or suppliers, and are protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication
supersedes that in all previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.

Warranty
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1)
year 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. Parts, modules and replacement products used by Tektronix for warranty
work may be new or reconditioned to like new performance. All replaced parts, modules and products become
the property of Tektronix.
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 THE PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE
AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
[W2 – 15AUG04]

Table of Contents
General Safety Summary ......................................................................................... iv
Service Safety Summary.......................................................................................... vi
Preface............................................................................................................. vii
Manual Conventions......................................................................................... vii
Related Manuals ............................................................................................. vii
Introduction ......................................................................................................... 1
Service Strategy................................................................................................ 1
Specifications................................................................................................... 1
Performance Verification...................................................................................... 1
Options and Accessories...................................................................................... 1
Configurations.................................................................................................. 1
Hardware Installation.......................................................................................... 1
Product Upgrade............................................................................................... 2
Operating Information......................................................................................... 2
Theory of Operation................................................................................................ 3
CPU Board ..................................................................................................... 5
Front Panel ..................................................................................................... 6
Audio (Option AUD).......................................................................................... 6
Fan Control..................................................................................................... 7
Power Supply and Distribution............................................................................... 7
General Maintenance............................................................................................... 9
Preventing ESD................................................................................................ 9
Inspection and Cleaning...................................................................................... 10
Troubleshooting.................................................................................................... 13
Getting Started .............. ................................ .............. .............. ...................... 13
Detailed Troubleshooting Procedures ...................................................................... 16
Removal and Replacement Procedures ......................................................................... 22
Preparation..................................................................................................... 22
Module Removal.............................................................................................. 24
Repackaging Instructions......................................................................................... 27
Packaging...................................................................................................... 27
Shipping to the Service Center.............................................................................. 27
Replaceable Parts.................................................................................................. 29
Parts Ordering Information .................................................................................. 29
Using the Replaceable Parts Lists........................................................................... 30
WVR5200 Waveform Rasterizer Service Manual i

Table of Contents
List of Figures
Figure 1: Block diagram .......................................................................................... 4
Figure 2: SDI board............................................................................................... 18
Figure 3: Fan and main chassis .................................................................................. 26
Figure 4: WVR5200 Exploded view............................................................................ 32
ii WVR5200 Waveform Rasterizer Service Manual

Table of Contents
List of Tables
Table i: Related documentation................................................................................. vii
Table 1: External inspection check list.......................................................................... 11
Table 2: Internal inspection check list........................................................................... 11
Table 3: Required test equipment................................................................................ 14
Table 4: Symptoms and causes .................................................................................. 15
Table 5: SDI board basic supplies ............................................................................... 17
Table 6: Tools required for module removal ................................................................... 23
WVR5200 Waveform Rasterizer Service Manual iii

General Safety Summary
General SafetySummary
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.
Ground theproduct. 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.
Power disconnect. The power cord disconnects the product from the power source.
Donotblockthepowercord;itmustremain accessible to the user at all times.
Do not operate without covers. Do not operate this product with covers or panels
removed.
Do not operate with suspected failures. If you suspect that there is damage to this
product, have it inspected by qualified service personnel.
Avoid exposed circuitry. Do not touch exposed connections and components when
power is present.
Use proper AC adapter. Use only the AC adapter specified for this product.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Provide proper ventilation. Refer to the manual's installation instructions for details
on installing the product so it has proper ventilation.
iv WVR5200 Waveform Rasterizer Service Manual

General Safety Summary
TermsinThisManual 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.
Symbols and Terms on the
Product
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read
the marking.
WARN ING indicates an injury hazard not immediately accessible as you
read the marking.
CAUTION indicates a hazard to property including the product.
The following symbol(s) may appear on the product:
WVR5200 Waveform Rasterizer Service Manual v

Service Safety Summary
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, switch off the instrument power, then
disconnect the power cord from the mains power.
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.
vi WVR5200 Waveform Rasterizer Service Manual

Preface
This manual supports servicing to the module level of the WVR5200 Waveform
Rasterizer, which rasterizes video signals for XGA display. The instrument finds
use as a monitor for broadcasting, production, and post-production environments.
This manual explains how to troubleshoot and service the instrument to the
module level. The manual is divided into the following sections:
Introduction provides a general product description and tells where to find
product installation information.
Theory of Operation provides descriptions of the instrument modules.
Maintenance tells you how to troubleshoot the product to the module level
and how to handle the modules.
Replaceable Parts illustrates the replaceable modules and mechanical parts
and provides replacement part numbers.
Manual Conventions
The following terms and conventions are used throughout this manual:
The terms "rasterizer" and "instrument" are is used interchangeably to refer to
the WVR5200 Waveform Rasterizer.
Related Manuals
This manual assumes you have access to the following manuals when servicing
this product. These manuals ship with the product and are also downloadable
from the Tektronix Web site.
Table i: Related documentation
Item Purpose Location
WVR5200 Waveform Rasterizer User
Manual
Operation instructions and explanation
of features
Product Documentation CD
www.tektronix.com/manuals
WVR5200 Waveform Rasterizer
Installation and Safety Instructions,
English, Japanese, Simplified Chinese
Basic installation and safety information Printed manual Product
Product Documentation CD
www.tektronix.com/manuals
Online Help In depth operation and UI help In the instrument: press the HELP button
on the front panel
WVR5200 Waveform Rasterizer Service Manual vii

Preface
Table i: Related documentation (cont.)
Item Purpose Location
WVR5200 Waveform Rasterizer
Specifications and Performance
Verification
Procedure for checking performance and
list of specifications
Product Documentation CD
www.tektronix.com/manuals
WFM Series Waveform Monitors and
WVR Series Waveform Rasterizers
Management Information Base
Programmer Manual
Programmer’s command reference for
controlling the waveform rasterizer
Product Documentation CD
www.tektronix.com/manuals
viii WVR5200 Waveform Rasterizer Service Manual

Introduction
The WVR5200 Waveform Rasterizer rasterizes serial digital video signals for a
DVI-I display, providing a new standard of display quality and flexibility.
Service Strategy
These products are repaired to the module level at selected Tektronix service
centers. Repair includes functional verification of the product.
Specifications
The specifications for this product are found in the WVR5200 Waveform Rasterizer
Specifications and Performance Verification Technical Reference located on the
Product Documentation CD that ships with the product and is published on the
Tektronix Web site. (See page vii, Related Manuals.)
Performance Verification
The performance verification procedures for this product are found in the
WVR5200 Waveform Rasterizer Specifications and Performance Verification
Technical Reference located on the Product Documentation CD that ships with
the product and is published on the Tektronix Web site. (See page vii, Related
Manuals.)
Options and Accessories
The lists of options and accessories for this product are found in the WVR5200
Waveform Rasterizer User Manual located on the Product Documentation CD that
ships with the product and is published on the Tektronix Web site. (See page vii,
Related Manuals.)
Configurations
The base instrument has no hardware upgrade options. Software options are
available to add capabilities such as audio and advanced gamut monitoring. For a
complete list of options, refer to the WVR5200 Waveform Rasterizer User Manual.
Hardware Installation
This product is to be rack mounted. For installation instructions, refer to the
WVR5200 Waveform Rasterizer Installation and Safety Instructions.
WVR5200 Waveform Rasterizer Service Manual 1

Introduction
Product Upgrade
Software upgrades are available for all products as free software downloads
from the Tektronix Web site. The WVR5200 Waveform Rasterizer User Manual
includes instructions for updating product software. If you would like to purchase
additional features and capabilities for your instrument, contact Tektronix for
more information on purchasable options. For a complete list of options, refer
to the WVR5200 Waveform Rasterizer User Manual.
Operating Information
For basic operating instructions, refer to the WVR5200 Waveform Rasterizer
User Manual. For more detailed reference information, refer to the instrument
Online help. (Press the Help button on the instrument front panel and then use
the General knob, up/down arrow keys, and SEL button to navigate through
the topics.)
Power-On Procedure 1. Connect the supplied power cord to the external AC adapter, and connect its
XLR output connector to the instrument.
2. Press the power button on the instrument front-panel and the instrument will
turn on.
3. Wait for the system to complete its power-on self-tests.
Power-Down Procedure 1. Press the power button on the instrument front-panel to turn the instrument off.
2. To remove power completely, disconnect the power cord from the AC adapter.
NOTE. The power button on the front-panel does not disconnect the mains power.
Only the power cord at the AC adapter can disconnect the mains power.
2 WVR5200 Waveform Rasterizer Service Manual

Theory of Operation
This instrument is modular. It includes extensive standard capabilities, which can
be augmented by adding various options.
This instrument has outputs to drive an external monitor as well as a serial digital
picture monitor.
This theory of operation is based on the high-level block diagram. (See Figure 1.)
The primary functions on the CPU board are:
Control processor kernel
Front panel interface
Fan controller
Headphones output and control
USB and network connections
Various secondary power supplies
The primary functions on the SDI board are:
SDI input signal conditioning
Input power conditioning and control
The primary functions on the FPGA board are:
Serial digital input processing
Waveform and picture processing for display
DVI output
Reference input data processing
SDI output generation
The block diagram reflects the physical arrangement of circuit boards with the
CPU board at the bottom, the SDI board in the center, and the FPGA board at the
top. Connectors to the External Reference and Front Panel boards are shown.
Power Distribution is not shown in the block diagram but is covered at the end of
this section.
WVR5200 Waveform Rasterizer Service Manual 3

Theory of Operation
Figure 1: Block diagram
4 WVR5200 Waveform Rasterizer Service Manual

Theory of Operation
CPU Board
Serial Digital Input
Processing
The serial digital circuitry receives the SDI input streams from the SDI board
after they have been equalized. The SDI streams are passed to the DSP FPGAs
where they undergo measurement and raster processing. The signal information
is then passed to the DSY FPGA for picture processing, recursion, and display
combining. The result is provided to the external DVI-I connector.
Reference Input The reference input is a passive loopthrough, which is AC coupled and buffered.
The reference signal is applied to a sync separator whose output is supplied to the
DSP FPGA, where the timing information is derived. The reference signal is also
digitized for display as a waveform.
Digital Waveform
Processing Engine
The data streams from the SDI video inputs are applied to the waveform
processing FPGA. This block deformats, up-samples, interpolates, and otherwise
processes the data to generate the signals needed to create the displays.
Rasterizing Engine The rasterizer engine resides in the same DSP FPGA as the waveform processing
engine. This block builds up the variable intensity images in the fast static RAM.
For each pixel of the display, the rasterizer engine increments the intensity of that
pixel every time the waveform hits its coordinates. As a result, the waveform
areas that are hit more frequently are brighter. For any given frame, the intensity
map is built up in one memory chip and read out of the other. The functions
swap on the next field.
Recursion and Picture
Processing Engine
The output of the rasterizing engine feeds the picture and recursive processing
engine in the second large FPGA. This engine adds the previous frame to the
present frame to reduce flicker and improve brightness. It also converts the picture
and waveform signals from various input frames rates to 60 Hz frame rate to work
with the DVI-I monitor. The picture and waveform data are then combined with
the graphics and audio bar information from the control processor. The result is
sent through the DVI connector to the external monitor.
CPU Board Control
Processor
The control processor is in charge of all the operational modes in the instrument.
It draws the audio bars, communicates with the front panel, and controls most
other internal devices though either the SPI or the I2Cbus.
The control processor interfaces to the Ethernet through a dual rate connection.
This allows the network connection to run at 10 or 100 MBps.
WVR5200 Waveform Rasterizer Service Manual 5

Theory of Operation
LTC LTC inputs come from the remote connector. The LTC signal is applied to an A/D
converter and then input to the waveform processing FPGA, which decodes the
time code information.
NOTE. The FPGAs decode VITC signals digitally.
Front Panel
The front panel contains a small processor which communicates with the control
processor through SPI signaling. Reprogramming can be done through the SPI if
the front panel processor flash code must be updated.
Audio (Option AUD)
The audio option enables display of levels and phase of embedded audio, and
drives the headphones output.
Audio Processing The display FPGA extracts embedded audio data from the selected SDI data
stream and sends it to the headphones output D/A converter on the CPU board.
The FPGA also calculates the peak values for the selected meter ballistics
(response characteristics).
The audio data has two paths to the display. On one path, peak values are read
by the control processor, which then plots the bar and surround displays. On the
second path, raw data samples are sent to the waveform processing engine, which
interpolates and plots it to generate the lissajous, or “phase,” display.
6 WVR5200 Waveform Rasterizer Service Manual