WVR6100, WVR7000, and WVR7100
Waveform Rasterizers
071-1589-03
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.
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.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
HIn North America, call 1-800-833-9200.
HWorldwide, visit www.tektronix.com to find contacts in your area.
Warranty 2
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, m odules 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 repai r any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a produc t 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.
Table of Contents
Introduction
General Safety Summaryv...................................
Service Safety Summaryvii....................................
Figure 5--12: Analog audio breakout cable assembly5--26.............
iv
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers 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.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
ToAvoidFireor
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.
Powering Off. The power cord provides Mains disconnect.
Replace Batteries Properly. Replace batteries only with the proper type and rating
specified.
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.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
v
General Safety Summary
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.
Symbols and Terms
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. The following symbols may appear on the product:
CAUTION
Refer to Manual
vi
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
WARNING
High Voltage
Protective Ground
(Earth) Terminal
Standby
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.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
vii
Service Safety Summary
viii
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Preface
Manual Conventions
This manual supports servicing to the module level of the WVR6100,
WVR7000, and WVR7100 Waveform Rasterizers, which rasterize video signals
for XGA display. The rasterizer finds use as a monitor for broadcasting,
production, and post-production environments.
This manual explains how to troubleshoot and service the rasterizer to the
module level. The manual is divided into the following sections:
HIntroduction provides a general product description and tells where to find
product installation information.
HTheory of Operation provides descriptions of the rasterizer modules.
HMaintenance tells you how to troubleshoot the product to the module level
and how to handle the modules.
HReplaceable Parts illustrates the replaceable modules and mechanical parts
and provides replacement part numbers.
The following terms and conventions are used throughout this manual:
HThe terms “rasterizer” and “instrument” are is used interchangeably to refer
to the WVR6100, WVR7000, and WVR7100 Waveform Rasterizers.
HWhere information is model-specific to either the WVR6100, WVR7000, or
WVR7100 model, it is indicated as such. (See Configurations on page 1--1
for more information on models and configurations this manual supports.)
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
ix
Preface
Related Manuals
Table i: Related Documentation
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 Website.
Item
WVR6100, WVR7000, and
WVR7100 Waveform Rasterizers
Quick Start User Manual
WVR6100, WVR7000, and
WVR7100 Online Help
WVR6100, WVR7000, and
WVR7100 Waveform Rasterizer
Specifications and Performance
Verification
WVR & WFM Series Master
Information Base
PurposeLocation
Installation and high-level operational overview
In depth operation and UI help
Procedure for checking performance and list of specifications
Programmers command reference
for controlling the waveform rasterizer
?
+
x
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Introduction
Introduction
Service Strategy
Specifications
The WVR6100, WVR7000, and WVR7100 Waveform Rasterizers rasterize
serial digital video and composite video signals (depending on installed options)
for an XGA display, providing a new standard of display quality and flexibility.
The Waveform Rasterizer will be repaired to the module level at selected
Tektronix service centers. Repair includes functional verification of the product.
Repair by the customer is not supported.
The specifications for this product are found on the WVR6100, WVR7000, andWVR7100 Documents CD that ships with the product and is published on the
Tektronix Website. See Related Manuals on page x.
Performance Verification
The Performance Verification procedure for this product is found in the
WVR6100, WVR7000, and WVR7100 Documents CD that ships with the product
and is published on the Tektronix Website. See Related Manuals on page x.
Options and Accessories
The lists of options and accessories for this product are found in the WVR6100,
WVR7000, and WVR7100 Waveform Rasterizers Quick Start User Manual thatships with the product. See Related Manuals on page x.
Configurations
WVR6100
The base WVR6100 instrument monitors SD inputs, and can be ordered with
options CPS to add monitoring of analog composite inputs, options DS, AD, DD
or DDE for multiple-channel audio, and options EYE or PHY for physical-layer
measurements.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
1- 1
Introduction
WVR7000
WVR7100
The base WVR7000 instrument monitors HD inputs, and can be ordered with
option SD to add monitoring of SD inputs, option CPS to add monitoring of
analog composite inputs, or options DS or AD for multiple-channel audio.
The base WVR7100 instrument monitors HD inputs, and can be ordered with
option SD to add monitoring of SD inputs, C PS to add monitoring of analog
composite inputs, options DS, AD, DD or DDE for multiple-channel audio, and
options EYE or PHY for physical-layer measurements.
Tektronix introduced two generations of WVR7100 instrument, an early version
that introduced alone and a later version that introduced with the WVR6100
instrument:
HB010100--B019999: These WVR7100 instruments included 1
modules (such as the main board and option boards).
HB020100-- present: These WVR7100 instruments (and all WVR6100
instruments) include 2
This manual supports both the generations of modules and identifies when
information is version-specific.
NOTE. You may encounter 1
options installed because these options were made field installable for all
WVR7100 and WVR6100 instruments. See Audio Option Board on page 2--4 for
more information.
nd
generation modules.
st
generation WVR7100 with 2ndgeneration audio
st
generation
WVRRFP
Hardware Installation
1- 2
Option WVRRFP is currently only available as a field-installable option. When
Option WVRRFP is field-installed, the rasterizer front-panel controls are present
but inoperable as long as the remote front panel is connected.
Early WVR7100 versions (see serial number range above) were orderable
configured with a remote front panel. For those instruments only, the instrument
front panel is blank, and control is from the remote front panel.
This product is to be rack mounted. For installation instructions, refer to the
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Quick Start User
Manual.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Product Upgrade
Operating Information
Introduction
To install software when ordered as a field upgrade, refer to the instructions
included with the kit. The WVR6100, WVR7000, and WVR7100 WaveformRasterizers Quick Start User Manual also includes instructions for updating
product firmware.
For basic operating instructions, refer to the WVR6100, WVR7000, andWVR7100 Waveform Rasterizers Quick Start User Manual that shipped with this
product, and for more detailed reference information, refer to the instrument
Online help (Push the HELP button to display online help on the rasterizer
screen.)
Power-On Procedure
Power-Down Procedure
1. This product has no power switch; to power it up, plug it in to a line voltage
source.
2. Wait for the system to complete its power-on self-tests.
Unplug the instrument.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
1- 3
Introduction
1- 4
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Theory of Operation
Theory of Operation
The base WVR6100 instrument monitors SD inputs, and can be ordered with
options CPS to add monitoring of analog composite inputs, options DS, AD, DD
or DDE for multiple-channel audio, and options EYE or PHY for physical-layer
measurements.
The base WVR7000 instrument monitors HD inputs, and can be ordered with
option SD to add monitoring of SD inputs, option CPS to add monitoring of
analog composite inputs, or options DS or AD for multiple-channel audio.
The base WVR7100 instrument monitors HD inputs, and can be ordered with
option SD to add monitoring of SD inputs, C PS to add monitoring of analog
composite inputs, options DS, AD, DD or DDE for multiple-channel audio, and
options EYE or PHY for physical-layer measurements.
All models use an external XGA monitor for the display. This section covers the
full capability, so some portions may not apply to a model with fewer features.
This theory of operation is mainly based on the High-level Block diagram on
page 2--11. When necessary, other block diagrams may also be referenced. The
upper portion of the block diagram covers functions on the main board. The
lower section covers those of the audio board. The primary functions on the main
board are:
1. Serial Digital Input
2. Composite input
3. Reference Input
4. Digital Waveform Processing Engine
5. Rasterizing Engine
6. Recursion and Picture processing Engine
7. Control Processor and it’s associated peripherals
8. Front Panel
9. LTC decoder
The primary functions on the audio board are:
1. Processing
2. Inputs
3. Outputs
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
2- 1
Theory of Operation
Serial Digital Input
Composite Input
There are also miscellaneous circuits such as the fans and their thermal control
system, and the “Fault” bus. These are covered in the High-level fault and fan
block diagram on page 2--9.
Power Distribution is not shown in the block diagram but is covered at the end
of this section.
The serial digital signal inputs are passive loop-throughs, so they must be
terminated to operate properly. The two inputs go through a 2-to-1 multiplexer
and are then are applied to the cable equalizer and the rest of the serial-to-parallel
conversion circuit. The output of this section is parallel data and a 27 MHz
clock.
The Composite inputs are also passive loop-throughs. If unterminated, the signal
appears twice as large as it should. The two sets of inputs go through a 2-to-1
multiplexer; then the selected signal is clamped if selected by the user. After the
clamp, the signal is filtered and then applied to an A-to-D converter to generate a
12-bit parallel signal. There is also a sync separator to generate timing information and a picture decoder. The output of the picture decoder is very similar to
the parallel data from the serial digital input. The separated sync passes on to the
WFM FPGA, where it processed (regenerates sub-carrier and demodulates) in
the digital domain.
Reference Input
The Reference input is a passive loopthrough similar to that of the Composite
inputs. The buffered signal is clamped and then digitized to generate a 10-bit
stream. A simple sync separator generates timing information, which is sent to
the waveform processing FPGA. As on the composite inputs, the separated sync
from the reference passes on to the WFM FPGA, where it is processed in the
digital domain.
Digital Waveform Processing Engine
2- 2
The parallel data streams from all three video inputs are applied to the waveform
processing FPGA. This block up-samples, interpolates, demodulates and
otherwise processes the data to generate the signals needs to create the displays.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Rasterizing Engine
The Rasterizer engine resides in the same FPGA as the waveform processing
FPGA. 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 it coordinates. As a result, the waveform
areas hit more frequently display more brightly. 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 rasterizer 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 the input rate of 50 or 59.94 Hz to 60 Hz frame rate to
work with the XGA monitor. The picture and waveform data combine with the
graphics and audio bar information from the control processor, and then output
to the XGA DAC to drive the external monitor. Note that the parallel data from
the serial digital input and the parallel stream from the composite decoder
connect directly to this FPGA to provide the picture functionality, bypassing the
waveform processing engine.
Theory of Operation
Control Processor
Front Panel
The control processor is in charge of all the operational modes in the instrument.
It draws the audio bars, communicates with the front panel through RS232
signaling, and controls most other internal devices though either the parallel or
the I2C bus. A few parts communicate through other bus types like JTAG or SPI.
Audio data is input to the control processor via the 8 bit HPI bus.
The control processor interfaces to the Ethernet through a dual rate switch. This
allows the network connection to run at 10 or 100 MB/s.
The front panel contains a small processor that communicates to the control
processor through RS232 signaling. Power, ground, fault and a programming
signals allow the front panel processor flash code to be updated.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
2- 3
Theory of Operation
LTC
Audio Option Board
LTC signals are routed to the decoder chip. The control processor reads the time
values from the decoder chip. If selected by the user, the decoded time values can
be displayed on the XGA monitor and used to time stamp alarm log entries.
LTC inputs come from the remote connector. The LTC signal is also applied to
an A/D converter and then input to the waveform processing FPGA to create the
LTC waveform display.
NOTE. The FPGA’s decode VITC signals digitally.
The audio option (if installed) resides on the upper “mezzanine” board. There are
two versions of 1
only with 1
st
st
generation audio options and boards that shipped (if ordered)
generation WVR7100 instruments: DG, which supports Digital
only, and DA, which supports both Analog and Digital audio.
There are four versions of 2
(whensoordered)with2
nd
generation audio options and boards that shipped
nd
generation WVR7100, and with all WVR6100,
instruments:
HOption AD adds support for Analog audio and Digital audio monitoring
HOption DD adds support for Dolby Digital (AC--3) decode and Analog and
Digital audio monitoring
HOption DDE adds support for Dolby E decode, Dolby Digital (AC--3)
decode, and Analog/Digital audio monitoring
HOption DS adds support for Digital audio monitoring
st
All WVR6100, WVR7000, and WVR7100, including 1
instruments, can be field upgraded to a 2
nd
generation audio option using the kits
listed in Table 2--1. Instruments so upgraded are also upgraded to 2
generation WVR7100
nd
generation
system software. Check the System > Options submenu of the CONFIG menu to
see which options are installed.
2- 4
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Table 2- 1: Supported audio options
Theory of Operation
Audio Processing
To add this option
to a previouslypurchased instrument
ADWVR6UP--ADWVR70UP--ADWVR7UP--AD
DDWVR6UP--DDnot supportedWVR7UP--DD
DDEWVR6UP--DDEnot supportedWVR7UP--DDE
DSWVR6UP--DSWVR70UP--DSWVR7UP--DS
WVR6100WVR7000WVR7100
Order this kit
All audio versions have the same basic processing engine. This uses an FPGA to
route the audio input into two DSP chips whose main function is to calculate 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 sent to
the control processor which then plots the bar displays. On the second path, raw
data samples are sent to the waveform processing engine which interpolates and
plots them to generate the lissajous display.
Audio Inputs
Depending on the instrument model and installed option, there are up to three
basic audio input paths: AES, analog, and embedded. AES inputs are accepted at
ratesupto96kHzfor1
st
generation boards and up to 192 kHz for 2ndgeneration
boards. For first generation boards at rates of 48 kHz or below, the FPGA
up-samples the data by a factor of two to improve the accuracy of the bar
processing in the Audio DSP chips. A 96 kHz rate AES signal is not upsampled. For 2
nd
generation boards all input data rates are resampled at 192 kHz
before processing by the DSPs.
Analog inputs are digitized at 48 kHz and then go through the same path as the
AES inputs.
The embedded audio path starts at the waveform processing engine. First the
audio samples are extracted from the serial digital video data using a
12.288 MHz oscillator and sent to the audio board. At the audio board, the
streams are multiplexed into the AES decoders and then follow the same path as
the AES data. The user can choose to have the de-embedded audio output on the
AES B port.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
2- 5
Theory of Operation
Audio Outputs
Option EYE/PHY
There are two audio outputs, analog and AES. Both outputs always follow the
source that is currently selected for the audio bar display. The analog outputs can
come from any input. The selected signal output from the FPGA, is converted
from digital to analog and then sent as a balanced output to the rear panel Dsub
connector.
For first generation boards, the AES outputs are only available when the input is
embedded. In this case, the AES B connectors can be configured as outputs, and
the embedded is sent out on the AES B connectors. For 2
nd
generation boards,
the AES outputs are available with any input. They can serve as an active
loop-through if the input is AES, a de-embedder if the input is embedded, or an
A/D converter if the input is analog.
Options EYE and PHY provide the following features:
HEye pattern display
HJitter waveform display
1
HJitter readout
HJitter Meter
HCable Loss readout
HApprox Cable readout
HSource Level readout
HEye Amplitude readout
HEye Risetime readout
HEye Falltime readout
1
1
1
HEye Rise--Fall (difference) readout
1
Requires Option PHY.
1
2- 6
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Theory of Operation
Options EYE and PHY support both HD and SD SDI signals, limited by the
capability of the instrument they are installed in:
HWVR6100: SD only.
HWVR7000: Not applicable; EYE and PHY options are not supported.
HWVR7100: HD only.
HWVR7100 Option SD: Both HD and SD.
The hardware to support these features is contained on the Eye board, which is
installed on standoffs over the left front quadrant of the Main board.
The Eye board receives an input signal through one (WVR6100) or two
(WVR7100) coaxial cables. These coaxial cables bring the input signal from the
Loopthrough board (WVR7100) or the Main board (WVR6100). Output data and
control I/O pass through a 60-pin connector (J6) to the Main board. Most of the
power required is provided by a two-conductor cable directly from the main
power supply (+5 V) to J3 on the Eye board. A small amount of additional
power is supplied through J6, from the Main board.
Operation. The selected SDI input signal is sampled by a wideband track-and-hold circuit, and then digitized. The same signal is also applied to a cable
equalizer and clock recovery circuit. The recovered clock is divided by 10 for SD
(by 20 for HD), filtered to form a sine wave, and then digitized. Both the SDI
input and the recovered clock sine wave are sampled by the same asynchronous
clock, and then both are passed to the main board for processing by FPGAs.
These arrays produce the Eye Display, Jitter Display, Jitter Readout, and Jitter
Thermometer. The Eye Display data is further processed to derive the Eye
Amplitude, Eye Rise Time, and Eye Fall Time measurements, which are shown
in the SDI Status Display.
The selected SDI input signal also drives the Cable Meter circuit, which
measures signal energy at two frequencies. These measurements are read by the
CPU on the Main board, which calculates Cable Loss, Approximate Cable
Length, and Source Level for display in the SDI Status screen.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
2- 7
Theory of Operation
Fault and Fan Block Diagram
There are two circuits not shown on the signal flow block diagram, the Fan
control and the bus that drives the front-panel “Fault” LED. Refer to Figure 2--1,
the High-level fault and fan block diagram on page 2--9, while reading the
associated paragraphs below.
The fan circuit senses the temperature to set the fan speed. Each fan has a
tachometer output to indicate fan speed so the circuit can run the fans at low
speed without stalling. The slower of the two fans controls a power supply that
provides the voltage for both fans. If a fan is not turning, the circuit senses the
stall and asserts the fault line and a line to the control processor so the event can
be entered in the diagnostic log.
The front panel “Fault” LED is driven by a line accessible by most of the
instrument. The concept is to provide fault information independent of the
control processor, since it may not always be working. If any circuit detects a
fault, it pulls the fault line low. This line is what is called a “wire--OR.” Circuits
are also expected to assert a local LED when asserting the fault line. Because of
this local LED, a technician should be able to look inside the box and see a red
LED near the site of the fault. Faults are usually also sent independently to the
control processor.
For details about the circuits that can assert the fault light and their associated
local LEDs, refer to the Troubleshooting on page 4--5.
2- 8
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Theory of Operation
Figure 2- 1: High-level fault and fan block diagram
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
2- 9
Theory of Operation
Power Supply and Distribution
The power supply has a universal AC input that enables it to accommodate
100 VAC to 264 VAC without any user range switching. The output is 5 V DC.
Circuits convert this output to any other supply voltage that they require at the
point of usage.
Fuses on the Primary supply 5 V output protect the main board. See the diagrams
in the troubleshooting section for locations of these fuses.
The secondary supplies and their tolerances are specified in the troubleshooting
section. The location of the supply test points is shown in Maintenance section.
May/22/2003
2- 10
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
AES Audio In
AES Audio In/ Out
2- 11
Theory of Operation
22
1
XGA
OUT
Front Panel
43
8 Ch Em bedded Audio
to Audio Block
Serial Digital Input
A/D
Clamp
MUX
Control Pr ocessor
converter
From 601 to
MUX
RS232
VITC/ITC
Composite encoder
To VI TC decoder
MUX
From FPGA
Decoder
From Comp/R ef MUX
ITC
Comp pix decoder
Buffer
Unused
12.288 MHz from
DB15 Remote
8 bi t HPI bus
Control and
2x Audi o DS Ps
192 kHz Dat a
and Clock
3 stereo pairs,
3 L/ R cl ock, 3 cl k
converters
6 x 24 bit A/D
Oscillator on Main Bd
MUX and
processing
Audio Board
Data to/from CPU
Control Bus
Audio FPGA
4 stereo pairs,
4 x L/R clock, 4 x clk
4x
AES
Analog Audio Out
decoders
Balanced
8x D/A
Data
AES
DB62 Analog A udio Connector
42
Out
5
Converters
input/
5
Stereo pairs
Stereo Pai rs at 192 kHz
AES Input (1)
Stereo Pai rs (5)
Four Stereo Pai rs
output
circuitry
Upsamplers
Dolby Digit al Dolby E Decoder
62
21
Main Board
DAC
XGA
SDRAM
Processing Engi ne
Picture and Recursive
12.288 MHz
Osc
PLL filter
Digital
Wavefor m
SDI Data
SDI Clk
Clock MUX
601 S /P
conversion
EqEq
Rasterizing
Engine
Processing
Clock
Input Data
Input Sync
Ext Ref Sync
64 MHz
VGA clock
VGA
27 MHz
Osc
XGA MUX
Pallette Map
A/D
RAM
converter
Filter
Sync sep
Clamp
Engine
Ext Ref Data
synth
From FPGA
Ethernet
XGA
Data
H/V
32 MHz
XGA Clk
Error Bus
VITC B urn I n (debug)
Lissajous
i2s to DSP
converter
A/D
Sync sep
MUX
MUX
B
A
EXT
Sync Separator
Analog Audio In
AES Audio In
AES Audio In/ Out
Figure 2- 3: WVR7000, WVR7100 ( B020100 and later) and WVR6100 Waveform Rasterizers Block diagram
2- 12
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Adjustment Procedures
Adjustments
The waveform rasterizer does not normally require any adjustments. The
adjustments which can be made should only be made while performing a
Performance Verification. Refer to the following procedures in PerformanceVerification for the adjustments:
HComposite Analog Vertical Measurement Accuracy (Option CPS only),
HComposite Analog Frequency Response (Option CPS only),
HComposite Analog Input DC Offset Restore Off (Option CPS only)
HAnalog Audio Level Meter Accuracy Over Frequency (Options DA, AD, DD,
and DDE only)
HHD Cable Meter (WVR7100 Option EYE or P HY only)
HHD Jitter Noise Floor (WVR7100 Option EYE or PHY only)
HEye Gain (WVR6100 and WVR7100 Option EYE or PHY only)
HSD Cable Meter (WVR6100 and WVR7100 Options EYE and PHY)
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
3- 1
Adjustments
3- 2
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Maintenance
General Maintenance
This section contains the information needed to perform periodic and corrective
maintenance on the waveform rasterizer. The following subsections are included:
HPreventing ESD — General information on preventing damage by electros-
tatic discharge.
HInspection and Cleaning — Information and procedures for inspecting and
cleaning the waveform rasterizer .
HTroubleshooting — Information for isolating and troubleshooting failed
modules. Included are instructions for operating the waveform rasterizer
diagnostic routines and troubleshooting trees. Most of the trees make use of
the internal diagnostic routines to speed fault isolation to a module.
HRepackaging Instructions — Information on returning a waveform rasterizer
for service.
Preventing ESD
Before servicing this product, read the Safety Summary and Introduction at the
front of the manual and the ESD information below.
CAUTION. Static discharge can damage any semiconductor component in the
waveform rasterizer.
When performing any service that requires internal access to the waveform
rasterizer, adhere to the following precautions to avoid damaging internal
modules and their components due to electrostatic discharge (ESD).
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive modules in their static protected
containers or on a metal rail. Label any package that contains static-sensitive
boards.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Do service of static-sensitive
modules only at a static-free work station.
4. Nothing capable of generating or holding a static charge should be allowed
on the work station surface.
5. Handle circuit boards by the edges when possible.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 1
General Maintenance
6. Do not slide the circuit boards over any surface.
7. Avoid handling circuit boards in areas that have a floor or work-surface
Inspection and Cleaning
Inspection and Cleaning describes how to inspect for dirt and damage. It also
describes how to clean the exterior and interior of the waveform rasterizer.
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, may prevent waveform rasterizer malfunction
and enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
waveform rasterizer and using general care when operating it.
How often maintenance should be performed depends on the severity of the
environment in which the waveform rasterizer is used. A proper time to perform
preventive maintenance is just before any waveform rasterizer adjustment.
covering capable of generating a static charge.
General Care
Module Handling
Interior Cleaning
Exterior Cleaning
The cabinet helps keep dust out of the waveform rasterizer and should normally
be in place when operating the waveform rasterizer.
When handling modules comprising circuit boards, especially larger circuit
boards, support the board on two sides to avoid flexing of the board material.
Flexing can cause breaks in the solder joints of SMDs.
Use a dry, low-velocity stream of air to clean the interior of the chassis. Use a
soft-bristle, non-static-producing brush for cleaning around components. If you
must use a liquid for minor interior cleaning, use a 75% isopropyl alcohol
solution and rinse with deionized water.
WARNING. Before performing any procedure that follows, power down the
instrument and disconnect it from line voltage.
Clean the exterior surfaces of the chassis with a dry lint-free cloth or a softbristle brush. If any dirt remains, use a cloth or swab dipped in a 75% isopropyl
alcohol solution. Use a swab to clean narrow spaces around controls and
connectors. Do not use abrasive compounds on any part of the chassis that may
damage the chassis.
4- 2
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
CAUTION. Avoid the use of chemical cleaning agents that might damage the
plastics used in the waveform rasterizer. Use only deionized water when
cleaning the front-panel buttons. Use a 75% isopropyl alcohol solution as a
cleaner and rinse with deionized water. Before using any other type of cleaner,
consult your Tektr onix Service Center or representative.
Inspection — Exterior. Inspect the outside of the waveform rasterizer for damage,
wear, and missing parts, using Table 4--1 as a guide. Immediately repair defects
that could cause personal injury or lead to further damage to the waveform
rasterizer.
Table 4- 1: External inspection check list
ItemInspect forRepair action
Cabinet, front panel,
and cover
Cracks, scratches, deformations,
damaged hardware
Repair or replace defective
module
Front-panel knobsMissing, damaged, or loose
knobs
ConnectorsBroken shells, cracked insulation,
and deformed contacts. Dirt in
connectors
Rackmount slidesCorrect operationRepair or replace defective
AccessoriesMissing items or parts of it ems,
bent pins, broken or frayed
cables, and damaged connect ors
Repair or replace missing or
defective knobs
Repair or replace defective
modules. Clear or wash out dirt
module
Repair or replace damaged or
missing items, frayed cables, and
defective modules
Inspection — Interior. To access the inside of the waveform rasterizer for
inspection and cleaning, you will need to remove the top cover.
Inspect the internal portions of the waveform rasterizer for damage and wear,
using Table 4--2 as a guide. Defects found should be repaired immediately.
If any circuit board is repaired or replaced, check Table 4--2 in Section 5 to see if
it is necessary to adjust the waveform rasterizer.
CAUTION. To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the waveform rasterizer.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Solder connectionsCold solder or rosin joints.Resolder joint and cl ean with
CapacitorsDamaged or leaking cases.
Corroded solder on leads or
terminals.
Wiring and cablesLoose plugs or connectors.
Burned, broken, or frayed wiring.
ChassisDents, deformations, and dam-
aged hardware.
Remove and replace damaged
circuit board.
isopropyl alcohol.
Remove and replace damaged
circuit board.
Firmly seat connectors. Repair or
replace modules with defective
wires or cables.
Straighten, repair, or replace
defective hardware.
Cleaning Procedure — Interior. To clean the waveform rasterizer interior, perform
the following steps:
1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).
2. Remove any remaining dust with a lint-free cloth dampened in isopropyl
alcohol (75% solution) and rinse with warm deionized water. (A cottontipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
4- 4
STOP. If, after doing steps 1 and 2, a module is clean upon inspection, skip the
remaining steps.
3. If steps 1 and 2 do not remove all the dust or dirt, the waveform rasterizer
may be spray washed using a solution of 75% isopropyl alcohol by doing
steps 4 through 6.
4. Gain access to the parts to be cleaned by removing easily accessible shields
and panels.
5. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
6. Dry all parts with low-pressure, deionized air.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Troubleshooting
General Maintenance
Lubrication. There is no periodic lubrication required for the waveform rasterizer.
The procedures in this section will help you trace the root cause of a problem
back to one of the replaceable parts. In general, this is a board-level replacement
but there are a few components on some boards that are replaceable.
WARNING. Before performing this or any other procedure in this manual, read
the General Safety Summary and Service Safety Summary found at the
beginning of this manual.
T o prevent possible injury to service personnel or damage to electrical components, please read Preventing ESD on page 4--1.
Getting Started
This procedure consists of two main sections; the first section contains the
Symptoms and Causes table, and the second section contains a set of Detailed
Troubleshooting Procedures. The table lists common problems and should help
you identify the problem or it may direct you to one of the detailed troubleshooting procedures in the second section. If you do not find your instrument’s
problem in the table, or if no specific problem was reported by the user, then
follow the steps in the Unknown Problem section in the Symptoms and Causes
table.
To properly test a waveform rasterizer you must have a known good XGA
monitor and appropriate signal sources. Depending on what portion of the
instrument you are testing, this might include Composite video, Serial Digital
Video, Analog Audio, or Digital Audio. In some cases, you may also need
receivers or an oscilloscope to check outputs.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 5
General Maintenance
p
g
Table 4- 3: Required Test Equipment
Test Equipment
XGA MonitorComputer monitor capable of 1024 x 768 x
SDI serial digital video test generator with
embedded audio and composite signal
source
RequirementsExample
60 Hz scan rate
NTSC BlackTektronix TG2000 wit h BG1 and additional
1080i 59.94 HD signals required for
WVR7000 and WVR7100:
H100% color bars
H10--bit shallow ramp
HSDI Matrix Split Field Pathological
Signal
H100% sweep
HD signal with adjustable SDI amplitude
required for WVR7100
1080i 59.94 analog tri--level sync required
for WVR7100
525/270 SD signals required for WVR7000
and WVR7100 Opt ion SD, and for
WVR6100:
modules indicated below.
HDVG1 module for TG2000 (Embedded
audio needed for audio options DA, DG,
AD, DS, DD, DDE)
HDST1 module for TG2000
AWVG1 module for TG2000
DVG1 with option S1 modul e for TG2000
(Embedded audio needed for audio options
DA, DG, AD, DS, DD, DDE)
H100% color bars
H10--bit shallow ramp
HSDI Matrix Pathological Signal
H100% sweep
HAdjustable SDI amplitude
Composite signals required for Option
CPS:NTSC SMPTE bars
Precision calibration signals for Option CPS 067--0465--00 module for TG2000
AES Audio Si gnal Generator48 kHz, 24 bit word length signalsRohde & Schwarz UPL06, Tektronix AM700
Analog Audio Signal GeneratorRohde & Schwarz UPL06, Tektronix AM700
VoltmeterFluke 87 or equivalent
OscilloscopeVideo trigger capabilityTektronix TDS3000B Series
AVG1 module for TG2000
and AM70.
and AM70.
4- 6
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
Table 4- 4: Symptoms and causes
SymptomPossible Sources or Recommended Detailed Troubleshooting Procedure to follow
No LEDs lit and XGA output not workingPerform general checks
Perform primary power supply checks
Perform secondary power supply checks
Replace main circuit board
Fault Light on after 15 sec boot upCheck error status page for more information
Check diagnostic log for more information
Perform fault LED problem isolation
Inconsistent or partial hardware failuresPerform primary power supply checks
Perform secondary power supply checks
Replace main circuit board
Fails any of these Power On Self Tests
(POST):
SDI_DIAGNOSTICS
FPGA_DIAGNOSTICS
TIMECODE_DIAGNOSTICS
CMPST_DIAGNOSTICS
Diagnostic log shows Fail on any of these
Advanced Diagnostics:
ADV_DIAG_LSS
Review messages in di agnostic log
Perform primary power supply checks
Perform secondary power supply checks
Replace the main board
Review messages in di agnostic log. If the waveform rasterizer also fails other tests as
well, then suspect main board and perform the primary and secondary power supply
tests.
If only this test fails, then perform Isolating Advanced Diagnostic Lissajous Errors
procedure to isolate the problem to main or audio board.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 7
General Maintenance
a
c
Replacethemainboard
Table 4- 4: Symptoms and causes (Cont.)
SymptomPossible Sources or Recommended Detailed Troubleshooting Procedure to follow
Failures while running the advanced
diagnostics:
H PLD Data Bus
H PLD Address Bus
H Power Supply
H Raster Data Bus Output
H Raster Data Bus Input
H Raster Data Bus Input
H Display Data Bus
H Display Address Bus
H DSP1 Data Bus
H DSP1 Address Bus
H DSP2 Data Bus
H DSP2 Address Bus
H DSP1 QDR1
H DSP1 QDR2
H DSP2 QDR1
H DSP2 QDR2
H Display SDRAM Data Bus
H Display SDRAM Address Bus
H DSP1 SDRAM Data Bus
H DSP1 SDRAM Address Bus
H DSP2 SDRAM Data Bus
H DSP2 SDRAM Address Bus
H Display → DSP1 Bus Output
H Display → DSP1 Bus Input
H DSP1 → Display Bus Output
H DSP1 → Display Bus Input
H Display → DSP2 Bus Output
H Display → DSP2 Bus Input
H DSP2 → Display Bus Output
H DSP2 → Display Bus Input
H DSP1 → DSP2 Bus Output
H DSP1 → DSP2 Bus Input
H DSP2 → DSP1 Bus Output
H DSP2 → DSP1 Bus Input
H Perform secondary power supply checks
H Repl
ethemain board
4- 8
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
Table 4- 4: Symptoms and causes (Cont.)
SymptomPossible Sources or Recommended Detailed Troubleshooting Procedure to follow
Failures while running the advanced
diagnostics (Cont.):
H Eye Power A2D
H Eye Cable A2D
H Eye Option
Replace the eye board
Failures while running t he Audio PLL
Frequency Check:
H Lissajous Bus
H DSP1 Data Bus
H Display Composite Controls
H DSP1 Composite Tests
H DSP2 Composite Tests
Note: Only tests pertinent to installed
options are reported.
Log Message:
H Fail AUDIO_DSP_HEARTBEAT
Replace the main board.
In the initial release of the software, this message can be a false failure if the processor
gets too busy. For example, if restoring presets with very different sett ings. If the audio
function works OK, but this message stil l appears occasionally, then upgrade the
software to the current version, clear the log, and bench test to see if the problem
persists. If it does, then search for an intermittent problem in the audio board, cables, or
main board.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 9
General Maintenance
Table 4- 4: Symptoms and causes (Cont.)
SymptomPossible Sources or Recommended Detailed Troubleshooting Procedure to follow
Functional Test Failures
PVD Test Failures
In case of failure on either Functional or the Performance tests, the board at fault is
generally obvious. Before replaci ng a board:
1. Perform the primary and secondary power supply checks.
2. Run the advanced diagnostics and check the diagnostic log for help in isolating the
fault.
If this does not i s olate the problem, then replace the main board if the test is in one of the
following areas:
H SDI
H Composite
H Ref
H LTC
H XGA output
H Color Palette
H Remote I/O
H Ethernet
Unknown Problems
Often an instrument will come into service
with vague or intermittent symptoms. In
cases like these, the following set of tests
may help find the problem or the marginal
condition.
If the problem is in the audio board, perform these tests:
1. Check the diagnostic log. This log records a variety of problems and will enable you
to see messages for an error that may not be currently happening.
2. Check the power supplies by performing the Primary and Secondary Supply checks.
A marginal supply can lead to intermittent operation if it is near the acceptable
threshold. This includes the main supply and the secondary supplies on each board
3. Check the error log. Thi s may give clues about how the unit was operating when the
user saw problems.
4. Run the functional test. This wi ll exercise a majority of the functions in the unit and
includes the advanced diagnostics. Some parts of the test may not be necessary for
all problem areas.
5. If the unit has an audio board, remove it and re-check any problem areas in the video
performance. The Audio board can place too much of a load on the supplies if they
are marginal. If the performance changes with the audio board removed, then you
should perform the primary and secondary power supply checks and look for an
excess load on one of the supplies.
4- 10
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Detailed Troubleshooting Procedures
The following tests should be run as indicated in the Symptom and Causes table
above. The procedures check for specific problems or will help you isolate a
problem to a board. You can run them at any time for informational purposes but
if you do not run the procedures in the correct context, then the final recommendation identifying a root cause might be suspect.
List of detailed troubleshooting procedures:
HGeneral Checks
HFault LED Problem Isolation
HPrimary Power Supply Checks
HSecondary Power Supplies Checks
HFront Panel Troubleshooting
HIsolating Audio Problems
General Maintenance
General Checks
Fault LED Problem
Isolation
HIsolating Advanced Diagnostic Lissajous Errors.
1. Check that the power cord is installed.
2. Check that the XGA monitor cable is connected on both ends and that the
screws are holding it securely.
3. Check that all internal cables are correctly connected and seated.
4. Check for any discolored or burned components.
The waveform rasterizer has a red FAULT LED on the front panel. This
indicator lights up when specific types of problems occur in the instrument. The
FAULT LED is different from the error icon on the XGA display, which
indicates a problem with the signals. It is normal for the FAULT LED to be lit
for 10 to 15 seconds during boot up.
The fault system is simple and does not require the processor be running to
indicate faults. However, the fault system does not cover everything and does not
give full details about the nature of the fault. Note that some problems that are
covered by the FAULT LED are also reported to the diagnostic log.
If the instrument runs sufficiently to access the CONFIG menu, then check the
diagnostic log for messages about the cause of the fault. Skip directly to that
portion of this section if such information is available.
All subsystems that assert the FAULT LED also assert a local, red LED to
indicate the area that generated the fault. Thus, whenever the instrument fault
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 11
General Maintenance
line is asserted, you need only remove the top cover and look for the red LEDs
inside to find the location of the fault. Table 4 --5 list the circuits that can assert
faults and identifies the LEDs associated with the circuit. See Figure 4--1 on
page 4--27, Figure 4--2 on page 4--28, Figure 4--4 on page 4--30, and Figure 4--6
on page 4--32 for the location of the LEDs on the circuit boards. There are also
duplicates of the instrument FAULT LED and the audio fault LED on the main
board (DS940 and DS840.)
Table 4- 5: Circuits that can assert faults
Circuit areaLocal LED
FansDS170, DS270
AudioDS590 on main
Front PanelDS252 (between preset 1, 2) on Front Panel
board
CPUDS680
Fan Failures. One possible source of an asserted FAULT LED is a fan failure.
If the right-side fan fails, then LED DS170 will be lit.
If the left-side fan fails, the LED DS270 will be lit.
The fan failure is sensed through tachometer feedback, thus a fault will be
asserted if the fan is not connected, stalled, or if the tachometer feedback line is
not working correctly.
If one fan fails, the control circuit will increase the voltage and the other fan will
be driven at full speed.
If neither fan is spinning, then check the dedicated switching supply that drives
them.
If both fans are spinning, but one is showing a fault, swap the fans. If the
problem moves with the fan, then replace the defective fan. If the fault does not
track the swap, then there is a problem on the main board.
The normal voltage to drive the fans (pin 1) varies from about 6 V to 13.5 V in
response to temperature and fan speed.
DSP. The following conditions can assert the FAULT LED from the DSP
circuitry:
4- 12
HOver temperature 2.5 V supply
HOver temperature 3.3 V supply
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
If any of these are in fault condition, the front-panel FAULT light will be lit and
the local, red LED DS550 will be lit. Over temperature faults are reported in the
diagnostic log – so you can look there to see if the DSP is asserting the line and
which supply is the root cause.
If the system is not running, then check the voltage on the 2.5 V and 3.3 V
supplies. If these are good, then check the temperature of the regulators U50 and
U60. If they are hot to touch, then they are overloaded or defective; replace the
main board.
Additionally, there are LEDs, DS260, DS261, and DS262, on the “Power Good”
lines from each of the DSP secondary supplies. If the supply has fallen out of
regulation, then the Power Good LED will not be lit.
Audio. In 1
st
generation boards, the audio fault LED is DS360 on the component
side and DS0460 on the back of the audio board. (The back side of the board
faces up when it is installed in the instrument.) The 2
nd
generation board does
not have a fault light; instead, it has one watch-dog LED for each processor and
one LED for the FPGA. The LED for DSP0, DS0310, blinks at 1Hz and the
LED for DSP1, DS420, blinks at 0.5 Hz. The LED for the FPGA, DS0820, is
dim if the FPGA is not programmed and bright if it is programmed. If the audio
fault line is on in first generation boards or if any of the LEDs are continuously
off in the 2
st
generation boards assert the fault light and an entry is written into the
1
diagnostic log. 2
nd
generation boards, replace the audio board.
nd
generation boards do not assert the fault light, but any failure
is written to the diagnostic log.
The POST does the following:
HReads all of the AES decoder internal registers and verifies that what is read
is correct
HTests the D/A control interface
HPerforms an active-bit test on the A/D output clocks
HChecks the serial EEPROM to see which of the analog inputs have been
calibrated
HTests the Audio DSP/FPGA interface
nd
HFor 2
generation boards, the AES encoder internal registers are read and
verified
HFor 2
nd
generation boards, the DSP interface between the Dolby E and
Dolby Digital decoders is tested
HThe main CPU asserts the fault line if the DSP heartbeat fails. This condition
will be shown in the diagnostic log.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 13
General Maintenance
Front Panel. The front panel local fault LED is DS252 (behind the PRESETS
buttons near the top of board ). The LED that shows through the panel is DS890.
If the Front panel asserts the Fault line, then replace the front panel board.
The front-panel processor asserts the fault indicator for about 1 second during
reset. If it does not finish initializing and running internal diagnostics, then the
fault LED will remain lit. If the front-panel processor detects a fault in the
diagnostics, then it will leave the fault asserted after it finishes.
The internal tests are:
HRAM Test -- Entire RAM is tested. If this test fails, the ROM Test is
skipped.
HROM Test -- The front-panel processor calculates the checksum of the
program stored in flash and compares it with the stored checksum.
CPU. The CPU fault LED is DS680. The CPU section also has DS591, which is
a duplicate of the FAULT LED, and DS590, which is a duplicate of the audio
fault light.
Primary Power Supply
Tests
The CPU can detect that the fault line is asserted. If the user has configured the
alarm section to monitor hardware faults, then alarms will be generated and / or
logged as set by the user. Since the CPU has access to many of the individual
error flags, some of these are displayed on the diagnostic log.
The CPU can also assert the fault line for some failures during initialization and
power on self test (POST).
If the CPU is asserting the fault line, then replace the main board.
This section describes methods for verifying the proper operation of the
waveform rasterizer primary power supply.
CAUTION. Some parts of this test require removing the insulating safety shield.
To avoid personal injury, be careful not to contact the circuitry while the shield
is removed. Be sure to replace the shield as soon as possible to prevent injury.
The main power supply accepts 100 to 264 VAC and outputs 5 VDC. The output
voltage at the supply must be between 4.9 and 5.3 V for correct operation. On
the main board, the common 5 V supply must be between 4.80 and 5.25 V.
If the voltage at the output of the supply is not correct, check the input voltage. If
the input voltage is in the correct range, then replace the power supply.
4- 14
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
If the supply output voltage is zero, then check the input circuit. The voltage
should be the same at the line cord, at the input to the power supply, and on both
ends of the fuse on the input to the supply. If the input voltage is correct while
the output is not, replace the supply. If the input voltage is not correct replace the
element in the chain that is not passing the AC input.
If the power supply output is correct, also check the fuses F40, F50, F51 and
F160 in the 5 V system near the main board power connector J581 (see
Figure 4--1). All should have 5 V on both sides. If not, replace the fuse.
Secondary Power Supply
Tests
There are multiple secondary supplies that are derived from the main 5 V supply.
Be sure all four 5 V fuses are good (as noted in Primary Power Supply Tests)
before checking the secondary supplies.
First, check the digital secondary supplies as shown in Table 4 --6. Each supply
has an LED and a test point, as shown in Figure 4--1 on page 4--27. The test
points are located “under” the edge of the Audio board, if it is installed. If any
supplies are out of range, replace the main board.
Table 4- 6: Digital secondary supplies
Nominal (+V)Allowed range (+V)Measure at
1.51.4to1.6TP430
1.81.7to1.9TP20
2.52.4to2.6TP432
2.62.6to2.8TP19
3.33.3to3.55TP530
5.04.75 to 5.25TP531
After you have checked the Digital Secondary Supplies, check the Analog
supplies as shown in Table 4--7. These have LEDs and test points as shown in
Figure 4--1 on page 4--27. If any voltages are out of tolerance, replace the
main board.
Table 4- 7: Analog supplies
Nominal (V)Allowed range (V)Measure at
-- 5--5.2 to –4.8TP171
+5 “good”+4.75to5.25TP383
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 15
General Maintenance
Check the Audio supplies on the Audio Board as shown in Table 4--8, (if an
Audio Board is installed). The test points are available, with the board installed,
at the location specified in Figure 4--4 on page 4--30.
Table 4- 8: Audio secondary supplies — 1
Supply NameRangeNotes
5VD4.6to5.4
3.3VD3.2to3.6
2.5VD2.3to2.7
1.6V1.5to1.7
6VA5.9to6.9
-- 5 V A 2--4.5 to –5.5
5VA24.8to5.2
-- 5 V A-- 4 . 5 t o -- 5 . 5Not present in digital only version Opt DG
5VA4.8to5.2Not present in digital only version Opt DG
--15V--14.5 to 15.5Not present in digital only version Opt DG
+15V14.5 to 15.5Not present in digital only version Opt DG
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
Front Panel
Troubleshooting
If the instrument has a reasonable display on the screen, but the front panel does
not work, follow this procedure:
1. Do the LEDs turn on for 2 to 3 seconds at power up? If not, check the 5 V
fuse, F580, on the main board and check the cable from the main board to
the front panel. If there is power to the front panel and the LEDs do not turn
on at power up, then replace the front panel board.
2. After power up, do most of the LEDs turn on and stay on? If not, proceed to
step 3. Otherwise probe J390, pin 6 and pin 7 on the main board. Pin 6
should be TTL high (about 3.3 V) and pin 7 should be low (RS232 level,
about –7 V). If not, suspect the main board. Otherwise probe pin 6 and 7 of
J670 on the front panel board. If they are high and low, respectively, suspect
the front panel, otherwise replace the cable.
3. When you press buttons on the front panel, do LEDs DS971 and DS972 on
the main board flash? These LEDs monitor the transmit and receive lines on
the main board side of the RS232 transceiver. If they flash, then go to step 5.
4. If DS971 is not flashing, then check pin 3 of J390 on the main board. When
you press a key, you should see pulses about a 15 V high and 100 to 300 µs
long. If not, suspect the front panel board.
5. If pin 3 of J390 is toggling and DS971 is not, then the RS232 receiver on the
main board is not working. Replace the main board.
6. If both DS971 and DS972 are flashing, then check pin 5 on main board
connector J390. When a front panel button is pressed, the front panel sends a
message to the main board via pin 3. The CPU on the main board responds
via pin 5 and this instructs the front panel to change which LEDs on the
front panel are illuminated. Pin 5 should have a burst of pulses with about
15 V signal swing and a basic pulse width of about 100 µs. If there is no
response from the CPU on pin 5 of main board connector J390, then the
RS232 transmitter is bad; replace the main board.
7. If both the DS971 and DS972 LEDs are flashing and the signals at the main
board connector are also good but the operation of the front panel is not
correct, check the cable between the two boards. This can be done by
probing pin 5 on J670 of the front panel board. As in step 5, it should have a
burst of pulses about 15 V high and 100 µs long after a button press. If the
signal is bad, suspect the cable. If the signal is good, replace the front panel
board.
8. If some buttons work, but others do not, then the front panel or the elasto-
meric key pads are bad. Disassemble the front panel assembly and use a
small piece of wire or foil to emulate the carbon pad on the switch mat. If
this registers as a switch closure then replace the elastomeric key pad.
Otherwise replace the front panel board.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 17
General Maintenance
9. If some front panel button LEDs work and others do not, then the problem
must be in the front panel board. These LEDs have the anodes connected to
+5 V and the cathodes connected to a resistor driven by a logic gate. Probe
the voltage on the LED. If the LED is bad replace it, otherwise replace the
front panel board.
10. The FAULT LED should be lit at power up for about 10 seconds. It should
also be lit if either fan is stopped. If it is not lit at power up or when a fan is
stopped, then check the voltage on the LED. The cathode connects to a
332 ohm resistor tied to ground and the anode connects to the output of a
logic gate. If the voltage looks correct, then replace the LED, otherwise
replace the front panel board.
11. If the buttons and LEDs work but knobs do not work, then replace the front
panel.
12. If the buttons and LEDs work but the beeper does not sound, then replace the
front panel board.
Audio POST Failure
It is sometimes difficult to isolate the root cause of audio problems. Most audio
problems are due to faults on the audio board, but the audio board communicates
with the main board, so in some cases the problem may be there as well. This
test isolates an audio POST failure to either the audio board, main board, or the
cable between.
First Generation Boards. For first generation boards, if there is an audio POST
failure indicated by either the Power-Up Diagnostics or the fault LEDs on the
audio board (DS360 or DS0460), perform the following procedure to narrow the
problem to either the audio board or the main board.
1. Prepare a test oscilloscope with the following settings:
HHorizontal Scale5.00 µs/div
HVertical Scale2.00 V/div
2. If the Power--Up Diagnostics screen reports Audio DSP Self Test – 10.
a. Check the FPGA programmed indicator (DS0430 on the audio board). If
this LED is off, proceed to step c; otherwise probe pin 34 of connector
J750 of the main board during boot-up. If the signal on the pin toggles,
replace the main board, otherwise check pin 34 of J400 on the audio
board. If signal toggles on pin 34, replace the cable; otherwise replace
the audio board.
4- 18
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
b. Probe pin 33 of J750 on the main board during the boot-up sequence. If
the signal does not exhibit a low to high transition, replace the main
board. If the signal does toggle, check pin 33 of J400 on the audio board.
If the signal doesn’t toggle on pin 33, replace the cable.
c.Probe pins 31 and 32 of connector J750 during the boot-up sequence. If
the signal on either of these pins doesn’t toggle, replace the main board.
If they do, probe pins 31 and 32 on the audio board. If the signal doesn’t
toggle on either pin, suspect the cable.
d. Probe pin 30 of J400 on the audio board during the boot-up sequence. If
the signal does not exhibit a low to high transition, replace the audio
board. If it does, check pin 30 of connector J750 on the main board. If
the signal on pin 30 doesn’t toggle, suspect the cable; if the signal on pin
30 does toggle, suspect the audio board.
3. If the Power-Up Diagnostics screen reports Audio DSP Self Test – 1,
perform the following procedure:
a. Check to see if the audio board is recognized by the main board by
pressing CONFIG and selecting Utilities > View HW/SW Version.
b. If there is an audio option listed, suspect the audio board, otherwise
proceed to step c.
c.Probe pins 3 through 14 on the main board connector J750 and verify
that the signals on all pins are toggling. If any signals do not, replace the
main board. If they all do, check them again on the audio board J400. If
any of the signals do not toggle on the audio board, replace the cable.
d. Probe pins 15 and 18 on connector J750 during boot-up and verify that
the signals toggle. If they don’t, suspect the main board. If they do,
check them again on the audio board J400. If either of the signals on
pins 15 and 18 do not toggle on the audio board, replace the cable.
e.Probe pin 25 on the audio board connector J400. If the signal does not
toggle, replace the audio board; otherwise check it again on the main
board connector J750. If the signal on pin 25 does not toggle on the main
board, then replace the cable, otherwise replace the main board.
4. If the Power-Up Diagnostics screen reports Audio DSP Self Test – 2,
perform the following procedure:
a. Check to see if the audio board is recognized by the main board by
pressing CONFIG and selecting Utilities > View HW/SW Version.
b. If there is an audio option listed, suspect the audio board, otherwise
proceed to step c.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 19
General Maintenance
c.Probe pins 3 through 14 on the main board connector J750 and verify
that the signals on all pins are toggling. If any of the signals on pins 3
through 14 do not toggle, replace the main board. If they all do, check
them again on the audio board J400. If any of the signals on the pins do
not toggle on the audio board, replace the cable.
d. Probe pins 15 and 20 on connector J750 during boot-up and verify that
the signals on the pins toggle. If they don’t, suspect the main board. If
the signals do toggle, check them again on the audio board J400. If any
of the signals on the pins do not toggle on the audio board, replace the
cable.
e.Probe pin 27 on the audio board connector J400. If the signal on the pin
does not toggle, replace the audio board, otherwise check it again on the
main board connector J750. If the signal on pin 27 does not toggle on the
main board, then replace the cable, otherwise replace the main board.
5. If the Power-Up Diagnostics screen reports Audio DSP Self Test – X,where
X is any other number, replace the audio board.
Second Generation Boards. For 2
nd
generation audio boards, not all errors are
reported by the power up diagnostics; therefore, if you are detecting a loss in
audio functionality, check the diagnostic log for any reported audio errors. If any
errors are found, perform the following procedure to narrow the problem to
either the audio board or the main board.
1. Prepare a test oscilloscope with the following settings:
HHorizontal Scale 5.00 s/div
HVertical Scale 2.00 V/div
2. If the diagnostic log contains an entry that reads Fail Audio DSP Self Test
fpga,do the following substeps:
a. Check the FPGA programmed indicator (DS0820 on the audio board). If
this LED is off, skip to step b; otherwise probe pin 34 of connector J750
of the main board during the boot sequence. If the signal on the pin
toggles, replace the main board; otherwise, probe pin 34 of J200 on the
audio board. If the signal toggles on pin 34, replace the cable; otherwise,
replace the audio board.
b. Probe pin 33 of J750 on the main board during the boot sequence. If the
signal does not exhibit a low-to-high transition, replace the main board.
If the signal does transition, check pin 33 of J200 on the audio board. If
the signal does not toggle on pin 33, replace the cable.
4- 20
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
c.Probe pins 31 and 32 of connector J750 during the boot sequence. If the
signal on either of these pins does not toggle, replace the main board. If
both signals do toggle, probe pins 31 and 32 on the audio board. If the
signal does not toggle on either pin, suspect the cable.
d. Probe pin 30 of J200 on the audio board during the boot sequence. If the
signal does not exhibit a low-to-high transition, replace the audio board.
If the signal does transition, check pin 30 of connector J750 on the main
board. If the signal on pin 30 does not toggle, suspect the cable; if the
signal on pin 30 does toggle, suspect the audio board.
e.If all signals in a through d are correct replace the audio board.
3. If the Diagnostic Log screen reports the failure Audio DSP Self Test—dsp0,
perform the following procedure:
a. Check to see if the audio board is recognized by the main board by
pressing CONFIG and selecting Utilities > View HW/SW Version.
b. If there is an audio option listed, suspect the audio board; otherwise,
proceed to step c.
c.Probe pins 3 through 14 on the main board connector J750, and verify
that the signals on all pins are toggling. If any signals are not toggling,
replace the main board. If they all are toggling, check them again on the
audio board J200. If any of the signals do not toggle on the audio board,
replace the cable.
d. Probe pins 15 and 18 on connector J750 during boot--up and verify that
the signals toggle. If they are not toggling, suspect the main board. If
they are toggling, check them again on the audio board J200. If either of
the signals on pins 15 and 18 do not toggle on the audio board, replace
the cable.
e.Probe pin 25 on the audio board connector J200 during the boot
sequence. If the signal does not toggle, replace the audio board;
otherwise, check it again on the main board at connector J750. If the
signal on pin 25 does not toggle on the main board, then replace the
cable; otherwise, replace the main board.
f.If all of these steps pass, replace the audio board.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 21
General Maintenance
4. If the Diagnostics Log reports the failure Audio DSP Self Test—dsp1,
perform the following procedure:
a. Check to see if surround display is functioning correctly by doing the
following.
i.Push the factory button, and then push and hold the display select #4
button.
ii.In the audio pop--up menu, select Aux Display>Surround Display.
iii. Also in the pop--up menu, select Audio Input> AES A.
iv. Hook up an AES test tone generator to the AES A1--2 input.
b. If there is nothing displayed on the surround display, proceed to step c;
otherwise, replace the audio board.
c.Probe pins 3 through 14 on the main board connector J750, and verify
that the signals on all the pins are toggling. If any of the signals on pins
3 through 14 do not toggle, replace the main board. If they all do toggle,
check them again on the audio board J200. If any of the signals on the
pins do not toggle on the audio board, replace the cable.
Isolating Advanced
Diagnostic Lissajous
Errors
d. Probe pins 15 and 20 on connector J750 during the boot sequence, and
verify that the signals on the pins toggle. If they do not toggle, suspect
the main board. If the signals do toggle, check them again on the audio
board J200. If any of the signals on the pins do not toggle on the audio
board, replace the cable.
e.Probe pin 27 on the audio board connector J200. If the signal on the pin
does not toggle, replace the audio board; otherwise, check it again on the
main board connector J750. If the signal on pin 27 does not toggle on the
main board, then replace the cable; otherwise, replace the main board.
f.If all of these steps pass, replace the audio board.
The advanced diagnostics test the lissajous data path between the audio and main
boards. A failure in this data path can be due to problem on either board.
Perform the following tests to isolate the problem to one board or the other.
1. For first generation audio boards, if the advanced diagnostics detect an error
in the lissajous circuitry, then it will display a failure in the following
categories:
HLiss[0] Frequency : should be between 19.8 MHz and 20.1 MHz
HLiss[1] Frequency : should be between 19.8 MHz and 20.1 MHz
4- 22
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
HLissajous[0] Bus : pass/fail
HLissajous[1] Bus : pass/fail
2. If there are any failures, prepare a test oscilloscope with the following
settings:
HVertical Scale2.00 V/div
HHorizontal Scale200 ns/div
3. If there is Liss[0] Frequency failure:
a. Put the scope probe on pin 22 of connector J940 on the audio board.
Verify the signal is ¶3V
and is a continuous 50% duty-cycle square
p--p
wave.
b. If the signal looks bad at J940, the audio board most likely has a failure,
otherwise continue to step c.
c.With the scope probe, verify the signal at J750 pin 62 of the main board.
If it is bad,suspect the cable, otherwise replace the main board.
4. If there is a Liss[1] Frequency failure:
a. Put the scope probe on pin 30 of connector J940 on the audio board.
Verify the signal is ¶3V
and is a continuous 50% duty cycle square
p--p
wave.
b. If the signal looks bad at J940, the audio board most likely has a failure,
otherwise continue to step c.
c.With the scope probe, verify the signal at J750 pin 70 of the main board.
If it is bad here suspect the cable; otherwise replace the main board.
5. If there is a Lissajous[0] Bus failure:
a. Put the scope probe on connector J940 pin 21 of the audio board and
verify the signal is ¶3V
and toggles low at regular intervals.
p--p
b. If the signal on pin 21 looks OK, put the scope probe on pin 23. Pin 23
is the data line and the signal will have a somewhat random look
depending on the audio source. Just verify that the signal is toggling and
is ¶3V
p--p
.
c.If either signal looks bad at J940, the audio board most likely has a
failure, otherwise continue to step d .
d. With the scope probe, check the signal at pin 61 of J750 on the main
board. Verify the signal is ¶3V
p--p
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
and toggles low at regular intervals.
4- 23
General Maintenance
e.If the signal on pin 61 looks OK, put the scope probe on pin 63. Pin 63
is the data line and the signal will have a somewhat random look
depending on the audio source. Verify that the signal is toggling and is
¶3V
p--p
.
f.If either signal is bad, suspect the cable; otherwise replace the main
board.
6. If there is a Lissajous[1] Bus failure:
a. Put the scope probe on pin 29 of connector J940 on the audio board.
Verify the signal is ¶3V
and toggles low at regular intervals.
p--p
b. If the signal on pin 29 looks OK, put the scope probe on pin 31. Pin 31
is the data line and the signal will have a somewhat random look
depending on the audio source. Just verify that it is toggling and is
¶3V
p--p
.
c.If either signal looks bad at J940, the audio board most likely has a
failure, otherwise continue to step d.
d. With the scope probe, probe the signal at pin 69 of J750 on the main
board. Verify the signal is ¶3V
and toggles low at regular intervals.
p--p
e.If the signal on pin 69 looks OK, put the scope probe on pin 71. Pin 71
is the data line and the signal will have a somewhat random look
depending on the audio source. Verify that it is toggling and is ¶3V
p--p
f.If either signal is bad, suspect the cable, otherwise replace the main
board.
Second Generation Audio Boards. For second generation boards, if the advanced
diagnostics detect an error in the Lissajous circuitry, then they will display a
failure in the following categories:
HLissajous Frequency :should be 61.44 MHz +/--0.1 Mhz
HLissajous Bus V2 :pass/fail
1. If there are any failures, prepare a test oscilloscope with the following
settings:
HVertical Scale2.00 V/div
HHorizontal Scale200 ns/div
.
4- 24
2. If there is Lissajous Frequency failure, perform the following substeps:
a. Put the oscilloscope probe on pin 62 of connector J200 on the audio
board. Verify the signal is ~3 V
and is a continuous 50% duty-cycle
p-p
squarewave.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
b. If the signal at J940 is not as just described in step a, the audio board
most likely has a failure; otherwise, continue to step c.
c.With the oscilloscope probe, verify the signal at J750 pin 62 of the main
board is as described in step a. If it not as described, suspect the cable; if
it is as described, replace the main board.
3. If there is a Lissajous Bus V2 failure, perform the following substeps:
a. Put the scope probe on connector J200 pin 61 of the audio board and
verify the signal is ~3 V
and toggles low at regular intervals.
p--p
b. If the signal on pin 61 looks OK, put the scope probe on pin 63. Pin 63
is the data line and the signal will have a somewhat random look
depending on the audio source. Just verify that the signal is toggling and
is ~3 V
p--p
.
c.If either signal looks bad at J200 the audio board most likely has a
failure, otherwise continue to step d. With the scope probe, check the
signal at pin 61 of J750 on the main board. Verify the signal is ~3 V
and toggles low at regular intervals.
p--p
Option EYE/PHY
Troubleshooting
d. If the signal on pin 61 looks OK, put the scope probe on pin 63. Pin 63
is the data line and the signal will have a somewhat random look
depending on the audio source. Verify that the signal is toggling and is
~3 V
p--p
.
e.If either signal is bad, suspect the cable; otherwise replace the main
board.
The EYE/PHY functions depend on the Loopthrough, EYE, and Main boards,
and the interconnections between them.
NOTE. Options EYE and PHY are available only for the WVR6100 and
WVR7100 instruments.
Major Operational or Diagnostic Failure.
HCheck that J6, the 60-pin connector between the Eye and Main boards, is
correctly mated and secure.
HCheck that the power supply cable is securely plugged into J3, the 2-pin
connector on the Eye board.
HCheck that the coaxial cables from the Loopthrough board to the Eye board
are securely connected and not crossed.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 25
General Maintenance
Eye Pattern or Jitter Waveform Display Problems. Jitter waveform display is only
available with Option PHY. The Eye Pattern and Jitter Waveform displays are
formed from data sampled from the input signal and the recovered clock sine
wave. Eye display bandwidth, rise and fall time, and transient response
aberrations depend on both the Eye and the Loopthrough boards.
When the same signal is applied to both channels, a problem that appears on one
channel but not the other indicates a faulty Loopthrough board. If the problem
appears on both channels, then suspect a faulty Eye board. It is possible, though,
that both channels of the Loopthrough board contain the same fault.
Cable Loss, Approx Cable, and Source Level Readout Problems. These measurements are made by a “cable meter” circuit. This circuit is located on the EYE
board, but is largely independent from the Eye and Jitter display and measurement functions. If other EYE/PHY functions operate correctly, then a “cable
meter” circuit problem is indicated.
Jitter Readout and Jitter Meter Problems. These measurements are derived from
sampled recovered clock sine wave data. Operation is unlikely to fail if the basic
Eye pattern display works correctly. Measurement accuracy is not adjustable, but
jitter noise floor depends on adjustment of Eye HD CDR calibration items.
Eye Amplitude, Eye Risetime, Eye Falltime, and Eye Rise- Fall (difference) Readout
Problems. These readouts are only available with Option PHY. These readouts
are derived from the Eye pattern display. Measurement accuracy depends on the
Eye Gain calibration items, and on front-end bandwidth and transient response,
which are not adjustable. Operation is unlikely to fail if the basic Eye pattern
display works correctly.
It is normal for these measurements to stop or become intermittent if there is
excessive waveform noise, aberrations, jitter, or cable loss.
4- 26
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
FL950, FL951,
FL952, FL960
XGA
RemoteFront Panel
General Maintenance
RJ45
CPU fault
(DS680)
Audio fault
(DS590)
Power connector
(J581)
Analog power test points:
+5 A (TP583),
--5 (TP171),
+1.8 (TP20),
+2.6 (TP10)
Front
panel
connector
(J390)
Temp faults:
DS450, DS451
Digital Power test Points:
+2.5 (TP432),
+3.3 (TP530),
+1.5 (TP430)
+5 (TP531)
Figure 4- 1: Main board indicator LED, connector, and test point locations
L fan fault
(DS270)
J700
R fan fault
(DS170)
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 27
General Maintenance
Local fault LED
Figure 4- 2: Options DG and DA Audio board component side indicator LED, location
4- 28
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
Figure 4- 3: Options DS, AD, DD, and DDE Audio board, component side
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 29
General Maintenance
Secondary
supply test
points
Local fault
LED
Figure 4- 4: DG and DA Audio board back side indicator LED and test point locations
4- 30
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
General Maintenance
FPGA
programmed
indicator
DSP0 activity
LED
DSP1 activity
LED
Secondary
supply test
points
Figure 4- 5: Options DS, AD, DD, and DDE Audio board back side indicator LED and test point locations
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 31
General Maintenance
Local fault LED
Figure 4- 6: Front panel board indicator LED locations (viewed from back side)
Global fault LED
4- 32
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Repackaging Instructions
This section contains the information needed to repackage the waveform
rasterizer for shipment or storage.
Packaging
When repacking the instrument for shipment, use the original packaging. If the
packaging is unavailable or unfit for use, contact your local Tektronix representative to obtain new packaging. Refer to Contacting Tektronix, following the
copyright statement, for the mailing address, the email address, and phone
number.
Seal the shipping carton with an industrial stapler or strapping tape.
Shipping to the Service Center
Contact the Service Center to get an RMA (return material authorization)
number, and any return or shipping information you may need.
If the instrument is being shipped to a Tektronix Service Center, enclose the
following information:
HThe RMA number.
HThe owner’s address.
HName and phone number of a contact person.
HType and serial number of the instrument.
HReason for returning.
HA complete description of the service required.
Mark the address of the Tektronix Service Center and the return address on the
shipping carton in two prominent locations.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
4- 33
Repackaging Instructions
4- 34
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Replaceable Mechanical Parts
Replaceable Parts
This section contains a list of the replaceable modules for the WVR6100,
WVR7000, and WVR7100 Waveform Rasterizers. Use this list to identify and
order replacement parts. Note that not all parts listed in this section are present
on every model. The parts present will depend on the model and options
installed.
Parts Ordering Information
Replacement parts are available through your local Tektronix field office or
representative.
Changes to Tektronix products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
HPart number
HInstrument type or model number
Module Servicing
HInstrument serial number
HInstrument modification number, if applicable
If you order a part that has been replaced with a different or improved part, your
local Tektronix field office or representative will contact you concerning any
change in part number.
Modules can be serviced by selecting one of the following three options. Contact
your local Tektronix service center or representative for repair assistance.
Module Exchange. In some cases you may exchange your module for a remanufactured module. These modules cost significantly less than new modules and
meet the same factory specifications. For more information about the module
exchange program, call 1-800-833-9200. Outside North America, contact a
Tektronix sales office or distributor; see the Tektronix web site for a list of
offices: www.tektronix.com.
Module Repair and Return. You may ship your module to us for repair, after which
we will return it to you.
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
5- 1
Replaceable Parts
New Modules. You may purchase replacement modules in the same way as other
replacement parts.
Using the Replaceable Parts Lists
Use this list to identify and order replacement parts. The following table
describes each column in the parts list.
Parts list column descriptions
ColumnColumn nameDescription
1Figure & index numberItems in this section are referenced by figure and index numbers to the exploded view
illustrations that follow.
2Tektronix part numberUse this part number when ordering replacement parts from Tektronix.
3 and 4Serial numberColumn three indicates the serial number at which the part w as fi rst effective. Column four
indicates the serial number at which the part was discontinued. No entry indicates the part is
good for all serial numbers.
5QtyThis indicates the quantity of parts used.
6Name & descriptionAn item name is separated from the description by a colon (:). Because of space limitations, an
item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook
H6-1 for further item name identification.
Abbreviations conform to American National Standard ANSI Y1.1-1972.Abbreviations
5- 2
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Replaceable Parts
WVR7000 and WVR7100 Replaceable mechanical part s (Figure 5- 1)
Fig. &
index
number
5-1-1211-0734-0016SCREW,MACHINE; 6-32 X 0.25O,FLH100,STL,CDPL,T-10 TORX DR
5-1-2200-4873-001COVER; TOP,STANDARD INSTRUMENT,0.050 AL,SAFETY CONTROLLED
5-1-3671-9933-00B010100B0199991CIRCUIT BD ASSY; MAIN,COMPOSITE,389-3567-00 WIRED,TESTED
5-1-3671-9934-00B010100B0199991CIRCUIT BD ASSY; MAIN,NO COMPOSITE,389-3567-00 W IRED,TESTED
5-1-3671-6096-01B020100--1CIRCUIT BD SUB ASSY:MAIN WITH COMPOSITE, FUNCTIONAL BD. TEST LEVEL,
5-1-3671-6097-01B020100--1CIRCUIT BD.SUB ASSY: MAIN, NO COMPOSITE, FUNCTIONAL BD.TEST LEVEL,
5-1-6131-5450-00-CONN,DSUB; PCB,HIGH DENSITY;FEMALE,RTANG,15 POS,0.078 CTR,0.350 MLG X 0.125
5-1-7214-3903-006SCREW,JACK; 4-40 X 0.312 LONG,0.188 H HEX HEAD STAND OFF,4-40 INT THD, X 0.312
5-1-8131-4131-001CONN,PLUG,ELEC; MALE W/LOC KING ADPTR,EXT MTG,SAFETY CONTROLLED
5-1-9211-0410-002SCR,ASSEM WSHR; 4-40 X 0.437,PNH,STL,CDPL,T-10 TORX DR
5-1-10119-7086-001FILTER,EMI; AC LINE CONNECTOR/INPUT FILTER;6.0A,120-250VAC,DC-400 HZ,2.2 NF
5-1-40374-371-001SHIELD; POWER SUPPLY BOTTOM, 0.030 POLYCARBONATE, SAFETY CONTROLLED
*020-2612-XX-PACKAGING KIT CONTAINING CD AND INSTRUCTIONS; CD CONTAINS PROGRAMMER
*071-1588-XX-MANUAL, TECH QUICKSTART USER FOR THE WVR6100, WVR7000, AND WVR7100
*071-1589-XX-MANUAL, TECH; SERVICE WVR6100, WVR7000, AND WVR7100 WAVEFORM RASTERIZER
*071-1627-XX-MANUAL, TECH; QUICKSTART USER FOR THE WVR6100, WVR7000, AND WVR7100
*071-1628-XX-MANUAL, TECH; QUICKSTART USER FOR THE WVR6100, WVR7000, AND WVR7100
*
Not shown.
Tektronix part
number
210-0457-007NUT,PL,ASSEM WA; 6-32 X 0.312,STL CD PL,W/LOCKWASHER
Serial no.
effective
Serial no.
discont’d
Name & descriptionQty
BEND, 12MM T&R
HOUSING,SAFETY CONTROLLED
INSERT,BD RETENTION,30 GOLD
(SNMP COMMANDS) AND SPECS & PERFORMANCE VER. PDF DOCUMENTS FOR THE
WAVEFORM RASTERIZER
WAVEFORM RASTERIZER
WAVEFORM RASTERIZER (JAPANESE LANGUAGE)
WAVEFORM RASTERIZER (SIMPLE CHINESE LANGUAGE)
5- 4
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
12
Replaceable Parts
3
32
27
36
25
26
24
27
28
29
34
23
30
31
33
35
32
22
21
20
19
18
37
32
16
17
38
16
40
39
15
6
14
4
5
7
11
12
13
8
9
10
Figure 5- 1: Replaceable mechanical parts, WVR7000 and WVR7100
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
5- 5
Replaceable Parts
WVR6100 Replaceable mechanical parts (Figure 5- 2)
Fig. &
index
number
5-2-1211-0734-0016SCREW,MACHINE; 6-32 X 0.25O,FLH100,STL,CDPL,T-10 TORX DR
5-2-2200-4873-001COVER; TOP,STANDARD INSTRUMENT,0.050 AL,SAFETY CONTROLLED
5-2-3671-6100-021CIRCUIT BD ASSY; MAIN, WITH COMPOSITE, 389--3789--00 WIRED, TESTED
5-2-3671-6043-021CIRCUIT BD ASSY; MAIN, NO COMPOSITE, 389-- 3789-- 00 WI RED, TESTED
5-2-6131-5450-00-CONN,DSUB; PCB,HIGH DENSITY;FEMALE,RTANG,15 POS,0.078 CTR,0.350 MLG X 0.125
5-2-7214-3903-006SCREW,JACK; 4-40 X 0.312 LONG,0.188 H HEX HEAD STAND OFF,4-40 INT THD, X 0.312
5-2-8131-4131-001CONN,PLUG,ELEC; MALE W/LOC KING ADPTR,EXT MTG,SAFETY CONTROLLED
5-2-9211-0410-002SCR,ASSEM WSHR; 4-40 X 0.437,PNH,STL,CDPL,T-10 TORX DR
5-2-10119-7086-001FILTER,EMI; AC LINE CONNECTOR/INPUT FILTER;6.0A,120-250VAC,DC-400 HZ, 2.2 NF
*020-2612-XX-PACKAGING KIT CONTAINING CD AND INSTRUCTIONS; CD CONTAINS PROGRAMMER
*071-1588-XX-MANUAL, TECH QUICKSTART USER FOR THE WAVEFORM RASTERIZER
*071-1589-XX-MANUAL, TECH; SERVICE WAVEFORM RASTERIZER
*071-1627-XX-MANUAL, TECH; QUICKSTART USER FOR THE WVR6100, WVR7000, AND WVR7100
*071-1628-XX-MANUAL, TECH; QUICKSTART USER FOR THE WVR6100, WVR7000, AND WVR7100
*
Tektronix part
number
Not shown.
Serial no.
effective
Serial no.
discont’d
Name & descriptionQty
HOUSING,SAFETY CONTROLLED
INSERT,BD RETENTION,30 GOLD
(SNMP COMMANDS) AND SPECS & PERFORMANCE VER. PDF DOCUMENTS FOR THE
WAVEFORM RASTERIZER
WAVEFORM RASTERIZER (JAPANESE LANGUAGE)
WAVEFORM RASTERIZER (SIMPLE CHINESELANGUAGE)
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
5-3-11131-3572-001CONN,HDR:; PCB,;MALE,STR,2 X 7,0.1 CTR,0.385 H X 0.120 TAIL,SHRD/4 SIDES,CTR
5-3-12260-5000-001SWITCH,SLIDE; SPST;DIP8 POSITION,GOLD OVER NICK-
5-3-13150-1022-001DISPLAY,OPTO; ,LED;RED,660NM,7SEG,0.3 INCH DISPLAY,125UCD PER SEGMENT
5-3-14159-5010-004FUSE,SMD; 7A,125V,FAST BLOW,0.1 X 0.1X 0.24;UL REG,CSA CERT,SAFETY C ON-
5-3-151FUSE; UL/IEC127, F3.15A H, 250VAC (5 x 20 mm)
5-3-16159-5003-001FUSE,THRM,CHIP; SELF RESETTING FUSE,1.1A HOLD,2.2A TRIP AT 20 DEG C,30V
5-3-17131-6187-001CONN,HDR PWR; PCB,MALE,STR,1 X 8,0.156 CTR,0.450 MLG X 0.125 TAIL,PLZ
5-3-18131-7244-002CONN,HDR; SMD,MALE,STR,2 X 5,0.100 CTR,0.350 H,0.165 MLG,SHRD/4 SIDES,MIL PLZ,30
5-3-19131-5457-003CONN,HDR; PCB,;MALE,STR,1 X 3,0.10 CTR,0.535 H X 0.130 TAIL,SHRD/4 SIDES,CTR
5-3-20174-4771-001CA ASSY,SP; IDC,RIBBON,10.00 L,DOUBLE ENDED,FEMALE,2 X 5 POS;F/P BD TO MAIN
5-3-21200-4800-001COVER,MINI; 2X FEX-440,SAFETY CONTROLLED
5-3-22210-0457-00NUT,PL,ASSEM WA; 6-32 X 0.312,STL CD PL,W/LOCKWASHER
5-3-23211-0410-00SCR,ASSEM WSHR; 4-40 X 0.437,PNH,STL,CDPL,T-10 TORX DR
Tektronix part
number
Serial no.
effective
Serial no.
discont’d
QtyName & description
SUPPLY TO MAIN BD,SAFETY CONTROLLED
SUPPLY,SAFETY CONTROLLED
PITCH;TD04H0SK1,SMD
Note: Quantity varies with instrument and audio option.
PROFILE ZINC DIE CAST HOUSING
Note: Quantity varies with instrument model.
Note: Quantity varies with instrument model.
Note: Quantity varies with instrument model.
0.5A; 8 PIN SMD; ZJYS51R5-4P
CTR,0.528 H X 0.138 TAIL,10/100 BASE TX AND RX MAGNETICS MODULE,SAFETY
CONTROLLED
LWING SMD,T&R
PLZ,30 GOLD,0.150 END DIM;,,
EL,3A,2PF,SEALED;90HBW08S,44MM T&R
AT10MA,COMMON ANODE,LEFT HAND DECIMAL;MAN72A
TROLLED
MAX,SAFETY CONTROLLED (MAIN)
WALL,TIN,SAFETY CONTROLLED
GOLD,SAFETY CONTROLLED (ONE ON MAIN BOARD, ONE ON FRONT PANEL)
PLZ,LATCHING,BD RETENTION,30 GOLD,
BD,SAFETY CONTROLLED
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
5- 9
Replaceable Parts
23
1
2
20
19
18
21
17
22
Mainboard
4
7
5
3
16
6
8
12
13
9
10
11
14
15
Figure 5- 3: WVR6100, WVR7000, and WVR7100 replaceable cables, connectors, and other mechanical parts
5- 10
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Replaceable Parts
WVR7100 (B010100 - B019999) Main Board replaceable par ts (Figure 5- 4)
Figure 5- 10: Audio board back- side components, Options AD, DS, DD, and DDE
5- 22
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
Replaceable Parts
WVRRFP Replaceable parts list (Figure 5- 11)
Fig. &
index
number
5-11-1200-4874-001COVER; TOP TO REMOTE FRONT PANEL,0.050 AL,SAFETY CONTROLLED
5-11-2131-3295-001CONN,RCPT,ELEC; HEADER, 2 X 25,0.1 SPACING
5-11-3389-3574-001CIRCUIT BOARD; FRONT PANEL REGULATOR,SAFETY CONTROLLED
5-11-3671-9937-001CIRCUIT BD ASSY; FRONT PANEL REGULATOR,389-3574-00 WIRED,TESTED
5-11-4214-3903-00-SCREW,JACK; 4-40 X 0.312 LONG,0.188 H HEX HEAD STAND OFF,4-40 INT THD, X 0.312
5-11-5211-0721-00-SCREW,MACHINE; 6-32 X 0.375,PNH,STL,CDPL,T-15 TORX DR
5-11-6441-2361-001CHASSIS,MAIN; REMOTE FRON T PANEL,,0.050 AL,W/HARDWARE,SAFETY CONTROLLED
5-11-7441-2361-001CHASSIS,MAIN; REMOTE FRON T PANEL,,0.050 AL,W/HARDWARE,SAFETY CONTROLLED
Tektronix part
number
Serial no.
effective
Serial no.
discont’d
QtyName & description
THD EXT 4-40
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
5- 23
Replaceable Parts
7
8
1
2
6
See figure 5-1 for
part numbers.
3
4
5
Figure 5- 11: WVRRFP
5- 24
WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Service Manual
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