Tektronix WFM8200, WFM8300 Service Manual

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WFM8200 and WFM8300

ZZZ

Waveform Monitors

Service Manual

*P077039300*

077-0393-00

WFM8200 and WFM8300

ZZZ

Waveform Monitors

Service Manual

Warning

The servicing instructions ar only. To avoid personal injury, do not perform any servicing unless you are qualiﬁed to do s prior to performing service.

e for use by qualiﬁed personnel

o. Refer to all safety summaries

www.tektronix.com

077-0393-00

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O . Bo x 50 0 Beaverto USA

For product information, sales, service, and technical support:

n, OR 97077

In North America, call 1-800-833-9200. World wide, vi sit www.tektronix.com to ﬁnd contacts in your area.

Warranty

Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Parts, modules and replacement products used by Tektronix for warranty work may be n the property of Tektronix.

ew or reconditioned to like new performance. All replaced parts, modules and products become

In order to o 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 p repaid. 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 result b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modiﬁed or integrated with other products when the effect of such modiﬁcation or integration increases the time or difﬁculty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

TRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

TEK AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

[W2 – 15AUG04]

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

Table of Contents

General Safety Summary .......................................................................................... v

Service Safety Summary................................ .................................. ....................... vii

Preface .............................................................................................................. ix

Manual Conventions.................... .................................. ................................ .... ix

Related Manuals .................. ................................ ................................ ............ ix

Introduction

Introduction ....................................................................................................... 1-1

Service Strategy......... ................................ .................................. ................... 1-1

Speciﬁcations...... .................................. ................................ ......................... 1-1

Performance Ve ri ﬁcation....................... ................................ ............................. 1-1

Options and Accessories .................................................................................... 1-1

Conﬁgurations................................................................................................ 1-1

Hardware Installation........... ................................ .................................. ........... 1-2

Product Upgrade ............................................................................................. 1-2

Operating Information....................................................................................... 1-2

Theory of Operation

Theory of Operation. ................................ ................................ ............................. 2-1

Main Board ................................................................................................... 2-3

Front Panel ................ ................................ .................................. ................. 2-4

Composite Input Option CPS.............................. ................................ ................. 2-4

Audio Options AD and DPE .................................. ................................ ............. 2-4

Option EYE/PHY............................................................................................ 2-5

Fan Control .................................. ................................ ................................ . 2-8

Power Supply and Distribution............................................................................. 2-8

Adjustment Procedures

Adjustments ....................................................................................................... 3-1

Required Equipment...................... .................................. ................................ . 3-1

Procedures .................................................................................................... 3-1

Maintenance

General Maintenance................................ ................................ ............................. 4-1

Preventing ESD .............................................................................................. 4-1

Inspection and Cleaning................................ ................................ ..................... 4-2

Troubleshooting. ................................ ................................ ............................. 4-5

WFM8200 and WFM8300 Waveform Monitors Service Manual i

Table of Contents

Detailed Troub

Removal and Replacement Procedures . ................................ ................................ ..... 4-23

Preparation................. ................................ .................................. ............... 4-23

Module Removal........................................................................................... 4-25

Repackaging Instructions ...................................................................................... 4-32

Packaging................................................................................................... 4-32

Shipping to

Replaceab

Replaceable Parts.................. .................................. ................................ ............. 5-1

Parts Ordering Information .............. ................................ ................................ ... 5-1

Using th

leshooting Procedures ................................................................... 4-10

the Service Center ........................ .................................. ................. 4-32

le Parts

e Replaceable Parts Lists.......................................................................... 5-2

ii WFM8200 and WFM8300 Waveform Monitors Service Manual

List of Figures

Figure 2-1: Main block diagram......... ................................ .................................. ..... 2-2

Figure 2-2: Option EYE/PHY block diagram .................... .................................. ........... 2-7

Figure 4-1: Main board power supply test points and LEDs .............................................. 4-20

Figure 4-2:

Figure 4-3: Analog audio board power supply test point locations.. ................................ ..... 4-22

Figure 4-4: Module securing screws ......................................................................... 4-26

Figure 4-5: Front panel and fan cable connections ................ ................................ ......... 4-29

Figure 4-6: Front panel disassembly .................. ................................ ....................... 4-30

Figure 4-7: Front panel board removal....................................................................... 4-30

Figure 5

Figure 5-2: Chassis components ................................................................................ 5-7

Figure 5-3: Main board replaceable components .. ................................ ........................... 5-9

Figure 5-4: Analog audio breakout cable assembly ........................................................ 5-10

Audio Main board power supply test point locations...................... ................... 4-21

-1: Circuit boards and connectors..................................................................... 5-5

WFM8200 and WFM8300 Waveform Monitors Service Manual iii

Table of Contents

List of Tables

Table i: Related documentation.................................................................................. ix

Table 4-1: E

Table 4-2: Internal inspection checklist ....................................................................... 4-3

Table 4-3: Required test equipment ....... .................................. ................................ ... 4-6

Table 4-4: Symptoms and causes ............................................................................... 4-7

Table 4-5: Main board secondary supplies ............. ................................ ..................... 4-12

Table 4-6: Audio main board secondary supplies........................................................... 4-13

Table 4-7

Table 4-8: Tools required for module removal ........................... ................................ ... 4-24

Table 4-9: Module removal .............. ................................ .................................. ... 4-25

Table 5-1: Circuit boards and connectors (See Figure 5-1.) ................................................. 5-3

Table 5-2: Chassis components (See Figure 5-2.) ............................................................ 5-6

Table 5-3: Replaceable parts list (See Figure 5-3.) .. .................................. ....................... 5-8

Table

Table 5-5: Accessories ............................ ................................ ............................. 5-11

xternal inspection checklist ....................................................................... 4-3

: Analog audio secondary supplies (board not present for option DS instrument)........... 4-13

5-4: Replaceable parts list (See Figure 5-4.) .. .................................. ..................... 5-10

iv WFM8200 and WFM8300 Waveform Monitors Service Manual

General Safety Summary

General Safet

To Avoid Fire or Personal

Injury

ySummary

Review the fo this product or any products connected to it.

To avoid pot

Only qualiﬁed personnel should perform service procedures.

While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals for warnings and cautions r

Use proper power cord. Use only the power cord speciﬁed for this product and certiﬁed for the country of use.

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.

llowing safety precautions to avoid injury and prevent damage to

ential hazards, use this product only as speciﬁed.

elated to operating the system.

Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.

Power disconnect. The power cord disconnects the product from the power source. Do not block the power cord; it must remain accessible to the user at all times.

Do not operate without covers. Do not operate this product with covers or panels removed.

Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualiﬁed service personnel.

Avoid exposed circuitry. Do not touch exposed connections and components when power is present.

Do not operate in wet/damp conditions.

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry.

Provide proper ventilation. Refer to the manual’s installation instructions for

details on installing the product so it has proper ventilation.

WFM8200 and WFM8300 Waveform Monitors Service Manual v

General Safety Summary

TermsinThisManual

Symbols and Terms on the

Product

These terms may

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.

These terms may appear on the product:

DANGER in the marking.

WAR NI N G read the marking.

CAUTIO

The following symbol(s) may appear on the product:

appear in this manual:

dicates an injury hazard immediately accessible as you read

indicates an injury hazard not immediately accessible as you

N indicates a hazard to property including the product.

vi WFM8200 and WFM8300 Waveform Monitors Service Manual

Service Safety Summary

Service Safet

y Summary

Only qualiﬁe 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.

UseCareWhenServicingWithPowerOn. Dangerousvoltagesorcurrentsmay exist in disconnect test leads before removing protective panels, soldering, or replacing components.

To avoid electric shock, do not touch exposed connections.

d personnel should perform service procedures. Read this Service

this product. Disconnect power, remove battery (if applicable), and

WFM8200 and WFM8300 Waveform Monitors Service Manual vii

Service Safety Summary

viii WFM8200 and WFM8300 Waveform Monitors Service Manual

Preface

This manual supports servicing to the module level of the WFM8200 and WFM8300 Waveform Monitors, which process video signals for display on an internal XGA production, and post-production environments.

LCD. The instrument ﬁnds use as a monitor for broadcasting,

Manual Conventions

This manual level. The manual is divided into the following sections:

Introduct

product installation information.

Theory of

WFM8300 Waveform Monitors modules.

Adjustm

instrument is out of speciﬁcation.

Mainte

and how to handle the modules.

Repla

and provides replacement part numbers.

The following terms and conventions are used throughout this manual:

The “WFM8200 and WFM8300 Waveform Monitors.”

explains how to troubleshoot and service the monitor to the module

ion provides a general product description and tells where to ﬁnd

Operation provides descriptions of the WFM8200 and

ent Procedures details the adjustments that to perform if the

nance tells you how to troubleshoot the product to the module level

ceable Parts illustrates the replaceable modules and mechanical parts,

term “instrument” is used interchangeably with the more formal term

Related Manuals

This manual assumes you have access to the following manuals when servicing this product. These manuals ship with the product and can also be downloaded from the Tektronix Web site.

Table i: Related documentation

Item Purpose Location

WFM8200 and WFM8300 Waveform Montiors User Manual

WFM8200 and WFM8300 Waveform Montiors Installation and Safety Instructions, English, Japanese,

Simpliﬁed Chinese

WFM8200 and WFM8300 Waveform Monitors Service Manual ix

Operation instructions and explanation of features

Basic installation and safety information

Product Documentation CD

www.tektronix.com/manuals

Printed manual

Product Documentation CD

www.tektronix.com/manuals

Preface

Table i: Related documentation (cont.)

Item Purpose Location

WFM8200 and WFM8300 Online Help

WFM8200 and WFM8300 Waveform Monitor Speciﬁcations and Performance Veriﬁcation

WFM and WVR Series Management Information DataBase (MIB)

In-depth operation and UI help In the instrument: press the HELP button

on the front panel

Procedure for checking performance and list of speciﬁcations

Programmers command reference for controlling the waveform monitor

Product Documentation CD

www.tektronix.com/manuals

Product Documentation CD

www.tektronix.com/manuals

x WFM8200 and WFM8300 Waveform Monitors Service Manual

Introduction

Service Strategy

Speciﬁcations

The WFM8200 and WFM8300 Waveform Monitors provide a powerful monitoring solution for broadcast, production, and post-production environments.

These products are repaired to the module level at selected Tektronix service centers. Repair includes functional veriﬁcation of the product. Component level repair by the customer is not supported.

The speciﬁcations for this product are found in the WFM8200 and

WFM8300 W Technical Reference located on the Product Documentation CD that ships with the product and is published on the Tektronix Web site. (See page ix, Related Manuals.)

aveform Monitors Speciﬁcations and Performance Veriﬁcation

Performance Veriﬁcation

The Performance Veriﬁcation procedures for this product are found in the

WFM8200 and WFM8300 Waveform Monitors Speciﬁcations and Performance Ver i ﬁcation Technical Reference located on the Product Documentation CD that

ship Related Manuals.)

Options and Accessories

The lists of options and accessories for this product are found in the WFM8200 and WFM8300 Waveform Monitors User Manual located on the Product

Documentation CD that ships with the product and is published on the Tektronix Website. (Seepageix,Related Manuals.)

onﬁgurations

The base instrument accepts an optional module for Analog Composite inputs (Option CPS). Other options add audio capability, Eye diagram and physical layer analysis, jitter analysis capability, and advanced gamut monitoring capability. For a complete list of options, refer to the WFM8200 and WFM8300 Waveform Monitors User Manual.

s with the product and is published on the Tektronix Web site. (See page ix,

WFM8200 and WFM8300 Waveform Monitors Service Manual 1–1

Introduction

Hardware Installation

The instrument is shipped in a wrap-around chassis which covers the instrument bottom and two sides. A cover is installed on the chassis, and the rear panel is made up of the module rear panels. You can operate the waveform monitor in the instrument chassis (the top cover must be installed, for safety and for proper cool You can also install the instrument in a custom installation, such as a console. For installation instructions, refer to the WFM8200 and WFM8300 Waveform Monitors Installation and Safety Instructions or the Rack Adapter Instructions included with your Tektronix rackmount kit.

ing), or installed in an approved portable cabinet or rack adapter.

Product U

pgrade

Operating Information

er-On Procedure

Pow

Hardware and software upgrades are available for all products, either as a ﬁeld upgrade kit or as a free software download from the Tektronix Web site. The

WFM820

for updating product software.

For operating instructions, refer to the WFM8200 and WFM8300 Waveform Monitors User Manual. For more detailed reference information, refer to the instrument Online help. (Press the Help button on the instrument front panel and then use the General knob, up/down arrow keys, and SEL button to navigate through the topics.)

1. Connect the supplied power cord to the rear-panel power connector.

2. Press the power button on the instrument front-panel and the instrument will

3. Wa it for the system to complete its power-on self-tests.

0 and WFM8300 Waveform Monitors User Manual includes instructions

turn on.

NOTE. The Standby button on the front-panel does not disconnect mains power.

Only the power cord at the rear of the product can disconnect mains power.

Power-Down Procedure

1–2 WFM8200 and WFM8300 Waveform Monitors Service Manual

1. Press the power button on the instrument front-panel to turn the instrument off.

2. To remove power completely, disconnect the power cord from the rear-panel

of the instrument.

Theory of Operation

The WFM8200 and WFM8300 are modular waveform monitors. They can be conﬁgured, with options, to accept Analog Composite inputs. Audio options can add inputs fo

All models use an internal DVI-I monitor for the display, and have an output to drive an ext drive serial digital and analog picture monitors.

r digital only or analog audio capability.

ernal monitor with the same display. All models also have outputs to

This theor Figure 2-1.) When necessary, other block diagrams may also be referenced.

The lower upper sections cover those of the optional video input and audio boards.

The prim

There are also miscellaneous circuits, such as the thermal control system for the fan.

yofoperationismainlybasedontheHigh-levelBlockdiagram.(See

portion of the block diagram covers functions on the main board. The

ary functions on the main board are:

Serial digital input processing

Reference input

Waveform processing engine

Rasterizing, recursion, and picture processing engine

Control processor and its associated peripherals

liary and ancillary data processing

Auxi

Secondary power distributions

WFM8200 and WFM8300 Waveform Monitors Service Manual 2–1

Theory of Operation

Power Distribu this section.

tion is not shown in the block diagram but is covered at the end of

Figure 2-1: Main block diagram

2–2 WFM8200 and WFM8300 Waveform Monitors Service Manual

Main Board

Theory of Operation

Serial Digital Input

Processing

Reference Input

Digital Waveform

ssing Engine

Proce

The serial digital circuitry receives the SDI input streams after they have been equalized, from either the SDI I/O board or the EYE/PHY board, depending on the installed options. The SDI streams are passed to the DSP FPGAs where they undergo measurement and raster processing. The signal information is then passed combining. The result is shown on the LCD display, and also provided to the external DVI-I connector.

The Refere Operation varies, depending on whether the instrument is operating in digital or composite input mode. For digital inputs the reference signal is applied to a sync separator whose output is supplied to the DSP FPGA, where the timing information is derived. For composite inputs, the reference signal is routed to the Option CPS composite input board, where a 10-bit ADC digitizes the signal. The

zed signal is then routed back to the DSP FPGA on the main board so the

digiti timing information can be derived, as with the digital process.

The data streams from the Composite and SDI video inputs are applied to the wavef demodulates, and otherwise processes the data to generate the signals needed to create the displays.

to the DSY FPGA for picture processing, recursion, and display

nce input is a passive loopthrough, which is AC coupled and buffered.

orm processing FPGA. This block deformats, up-samples, interpolates,

Rasterizing Engine

ecursion and Picture

Processing Engine

Rasterizer engine re sides in the same DSP FPGA as the waveform processing

The engine. This block builds up the variable intensity images in the fast static RAM. For each pixel of the display, the Rasterizer Engine increments the intensity of that pixel every time the waveform hits its coordinates. As a result the waveform areas hit more frequently are brighter. For any given frame, the intensity map is built up in one memory chip and read out of the other. The functions swap on the next ﬁeld.

The output of the rasterizer feeds the picture and recursive processing engine in the second large FPGA. This engine adds the p revious 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 DVI-I 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 inputs connect directly to this FPGA to provide the picture functionality, bypassing the waveform processing engine.

WFM8200 and WFM8300 Waveform Monitors Service Manual 2–3

Theory of Operation

Control Pro cessor

Front Panel

LTC

The control pro It draws the audio bars, communicates with the front panel, and controls most other internal devices though either the SPI or the I the control processor v ia the 8 bit HPI bus.

The control processor interfaces to the Ethernet through a dual rate connection. This allows the network connection to run at 10 or 100 MBps.

LTC inputs come from the remote connector. The LTC signal is applied to an A/D converter and then input to the waveform processing FPGA, which decodes the time code information.

NOTE. The FPGAs decode VITC signals digitally.

The fro processor through SPI signaling. Reprogramming can be done through the SPI if the front panel processor ﬂash code must be updated.

nt panel contains a small processor which communicates with the control

cessor is in charge of all the operational modes in the instrument.

C bus. Audio data is input to

Composite Input Option CPS

The Composite inputs are also passive loop-throughs. If unterminated, the signal appears twice as large as it should. The inputs are either AC or DC coupled, depending on the DC Restore setting. The selected input signal is ﬁltered and applied to an A-to-D converter to generate a 14-bit parallel signal, which is routed

he DSP FPGA on the Main board, where it is demodulated in the digital

to t domain.

Audio Options AD and DPE

The audio option (if installed) resides in the module slot closest to the power supply. There are two audio options available.

Option AD adds Analog Audio Monitoring (2 sets of 6 channel Analog Audio inputs and 8 channels of Analog Audio outputs) and 16 channels Embedded and AES/EBU Digital Audio support (8 channels at a time). This option is available for all m odels.

Option DPE adds Option AD capabilities plus support for decoding and monitoring Dolby E and Dolby D Audio. This option is available for all models.

2–4 WFM8200 and WFM8300 Waveform Monitors Service Manual

Theory of Operation

Audio Processing

Audio Inputs

Audio Outputs

Both audio vers 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 and surround displays. On the second path, raw data samples are sent to the waveform processing engine which interpolates and plots it to generate the lissajous, or “phase,” display.

There are three basic audio input paths: AES, analog, and embedded. AES inputs are accepted at rates up to 192 kHz.

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.

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 62-pin rear panel analog audio connector.

ions have the same basic processing engine. This uses an FPGA to

Option EYE/PHY

The AES B connectors can be conﬁgured as outputs for use with any input type. They can serve as an active loopthrough if the input is AES, a de-embedder if the input is embedded, or an A/D converter if the input is analog. Up to six decoded Dolby audio channels may be output if Option DPE is installed.

Option EYE and Option PHY provide the following features:

Eye pattern display

Equalized Eye pattern display

Jitter readout

Jitter Meter

Cable Loss readout

Test Signal Output

Approx Cable readout

WFM8200 and WFM8300 Waveform Monitors Service Manual 2–5

Theory of Operation

Operation

Source Level re

Jitter waveform display

Eye Amplitude readout

Eye Risetime readout

Eye Falltime readout

Eye Rise-Fall (difference) readout

Requires Op

tion PHY.

adout

NOTE. SD, HD, and 3 Gb/s signals can be used with these features. All instrument

models come standard with SD-SDI and HD-SDI. 3 Gb/s signals require Option 3G be installed.

The hard

ware to support these features is contained on the EYE/PHY board. The Audio blocks are not shown in this block diagram but, if installed, still connect a s shown in the Main Block diagram. (See Figure 2-1 on page 2-2.)

Each SD

I input signal is applied to a cable equalizer. The selected input signal is sampled by a wide-band track-and-hold circuit, and then digitized. The selected input is also applied to a 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

PGAs. These arrays produce the Eye Display, Jitter Display, Jitter Readout,

by F 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.

2–6 WFM8200 and WFM8300 Waveform Monitors Service Manual

Theory of Operation

Figure 2-2: Option EYE/PHY block diagram

WFM8200 and WFM8300 Waveform Monitors Service Manual 2–7

Theory of Operation

Fan Control

There are multiple temperature sensors in different locations in the instrument, including some mounted on the option b oards. The control processor reads the temperature fan speed at the target by measuring the fan tachometer output, allowing reliable operation at low speed. If a fan is not turning, the circuit senses the stall and turns on a red LED (DS11 or DS12 on the Main board). The fans are tested at power on. If a fan fails, a message is shown on screen and also entered into the diagnostic log.

sensors and sets a target speed for the fans. The fan circuit holds the

Power Sup

ply and Distribution

The power supply has a universal AC input, enabling it to accommodate 90 to 264 VAC without any user range switching. The output is 5 VDC. Circuits convert this out

Fuses on the Primary supply 5 V output protect the main board.

The secondary supplies and their tolerances are speciﬁed in the troubleshooting section. The location of the supply test points is shown in the Maintenance section.

put to any other supply voltage that they require at the point of usage.

2–8 WFM8200 and WFM8300 Waveform Monitors Service Manual

Adjustment Procedures

Adjustments

The waveform monitor does not normally require any adjustments. The adjustments which can be made are semi-automated, and should only be made while performing a Performance Veriﬁcation. Make the appropriate adjustment if the instrument fails one of these tests in the Performance Veriﬁcation procedure:

Cable Meter (HD, SD, and 3G) (Option EYE or PHY only)

Jitter Noise Floor (Option EYE or PHY only)

Eye Gain (Option EYE or PHY only)

PixMon Output

Requ

ired Equipment

Procedures

Composit

Composite Analog Vertical Measurement Accuracy (Option CPS only)

Composite Analog Frequency Response (Option CPS only)

Analog Audio Level Meter Accuracy Over Frequency (Options AD and DPE

only)

After making the adjustment shown here, repeat the failed Performance Ver iﬁcation step.

These adjustment procedures require the s ame equipment as the Performance Ver iﬁcation procedure. For more details refer to Speciﬁcations and Performance

iﬁcation.

Ver

NOTE. If you do not see the calibration case you are looking for, make sure to

go to the next page using the up or down arrow key.

e Analog Input DC Offset Restore Off (Option CPS only)

WFM8200 and WFM8300 Waveform Monitors Service Manual 3–1

Adjustments

Cable Meter

SD, HD, and 3G Clock

Extractor (Jitter Noise

Floor)

1. If any cable len

adjustment procedure. Perform both the Short and Long steps for any input (SDI A or SDI B) and any standard (HD, SD, and 3 Gb/s) that was found to be outside the speciﬁcation.

NOTE. Be sure to use a generator with SDI output set as close as possible to

800 mV, since the Cable Meter adjustment establishes the Source Level and the Approx Cabl

2. Press CONFIG,selectUtilities > Calibration, and then press SEL to start

the calib

3. Use the up and down arrow buttons to navigate to the Cable Meter calibration

case you want.

4. Press SEL to start, and follow the on-screen instructions.

5. Follow the instructions at the bottom of the screen to Save and Exit

Calibration mode.

If the Jitter Noise Floor is outside of the speciﬁcation, perform the Eye CDR Null calibration, as described below.

1. Press the CONFIG button.

gth reading is outside the speciﬁcation, perform the following

e (cable length) calibration.

ration process.

Eye Gain

2. Select Utilities > Calibration and press SEL to enter the Calibration menu.

3. Use the arrow buttons to navigate to the appropriate Eye CDR Null calibration

case.

4. Press SEL to start, and follow the on-screen instructions.

5. Follow the instructions at the bottom of the screen to Save and Exit

Calibration mode.

6. Restart the Jitter Noise Floor test, and then record the new values in the test

record provided in the Speciﬁcations and Performance Veriﬁcation manual.

If the Eye Gain is outside the speciﬁcation, perform the following adjustment procedure for SDI A and SDI B inputs.

1. Connect a signal source, with an 800 mV, 1 MHz, square wave signal to the

SDI A input. Make sure the source is calibrated and the signal amplitude is within a few millivolts of 800 mV.

2. Press the CONFIG button, and then select Utilities > Calibration.Press

SEL to enter the calibration menu.

3. Use the up and down arrow buttons to navigate to the appropriate Eye Gain

Adjust selection, and press SEL to start the calibration.

3–2 WFM8200 and WFM8300 Waveform Monitors Service Manual

Adjustments

PixMon YPbPr Gain

4. Follow the on sc

reen instructions, using the General knob o r the up and down arrow keys to adjust the displayed amplitude of the eye waveform until it is 800 mV.

5. Press and hold STATUS, and then select SAVE and press SEL.

6. Repeat for t

he SDI B input.

7. Follow the instructions at the bottom of the screen to Save and Exit Calibratio

nmode.

1. Connect a signal with an identiﬁable 100% level, such as 100% Flat Field or 100% Color Bars, to the SDI A input.

2. Connect an XGA to 5x BNC adapter cable to the PixMon output.

3. Connect the Y/Green video signal to the oscilloscope input. (Use an

oscilloscope with a 75 Ω input, or a 75 Ω feed through termination.)

4. Set the Oscilloscope:

Control Setting

Vert

Horiz

Trigger Edge

200 mV/Div

20 μs/Div

PixMon YRGB Black Level

5. Pres

stheConﬁg button.

6. Select Utilities > Calibration.PressSEL to enter the calibration menu.

7. Navigate to the Pixmon YPbPr Gain calibration case, and press SEL to start.

8. Adjust the oscilloscope trigger level for a stable display.

9. Use the General knob to adjust the signal amplitude (not including the sync

pulse) to 700 mV on the oscilloscope.

10. Follow the instructions at the bottom of the calibration screen to Save and Exit Calibration mode.

1. Connect a signal with an identiﬁable black level, such as 0% Flat Field or 100% Color Bars, to the SDI A input.

2. Connect an XGA to 5x BNC adapter cable to the PixMon output.

3. Connect the Y/Green video signal to the oscilloscope input. (Use an

oscilloscope with a 75 Ω input, or a 75 Ω feed through termination.)

WFM8200 and WFM8300 Waveform Monitors Service Manual 3–3

Adjustments

PixMon PbPr Zero Level

4. Set the Oscillo

Control Setting

Vert

Horiz

Trigger Edge

scope:

200 mV/Div

20 μs/Div

5. Press the Conﬁg button.

6. Select Utilities > Calibration. Press SEL to enter the calibration menu.

7. Navigate to the Pixmon YRGB black level calibration case, and press SEL

to start.

8. Adjust the oscilloscope trigger level for a stable display.

9. Use the General knob to adjust the signal black level to 0 V on the

oscilloscope.

10. Follow the instructions at the bottom of the calibration screen to Save and Exit Calibration mode.

1. Connect a signal with an identiﬁable black level, such as 0% Flat Field or 100% Color Bars, to the SDI A input.

2. Connect an XGA to 5x BNC adapter cable to the PixMon output.

3. Connect the Pb/Blue video signal to the oscilloscope input. (Use an

oscilloscope with a 75 Ω input, or a 75 Ω feed through termination.)

4. Set the Oscilloscope:

Control Setting

Vert

Horiz

Trigger Edge

200 mV/Div

20 μs/Div

5. Press the Conﬁg button.

6. Select Utilities > Calibration. Press SEL to enter the calibration menu.

7. Navigate to the Pixmon PbPr zero level calibration case, and press SE

to start.

8. Adjust the oscilloscope trigger level for a stable display.

9. Use the General knob to adjust the signal zero level to 0 V on the oscilloscope.

10. Follow the instructions at the bottom of the calibration screen to Save and

Exit Calibration mode.

3–4 WFM8200 and WFM8300 Waveform Monitors Service Manual

Adjustments

Composite Analog Input

DC Offset Restore Off

(Option CPS)

Composit

e Analog Vertical

Measurement Accuracy

(Option CPS)

Perform the fol

1. Press the Conﬁg button.

2. Select Utilities > Calibration,andthenpressSEL to enter the calibration

menu.

3. Navigate to Composite DC Offset and press SEL to automatically adjust the offset.

4. Follow the instructions at the bottom of the screen to Save and Exit Calibration mode.

Perform the following steps if the Amplitude is outside the speciﬁcation.

1. Connect a 100% color bar signal from the precision generator to the Composite A input. Terminate the loop through with a precision 75 Ω termination.

2. Press the CONFIG button.

3. Navigate to Utilities > Calibration, and then press SEL.

4. Select

5. Follow the on-screen instructions to adjust the gain.

lowing steps if the Offset is outside the speciﬁcation.

Composite Waveform Gain, and then press SEL.

osite Analog

Comp

Frequency Response

(Option CPS)

6. Follow the instructions at the bottom of the screen to Save and Exit Calibration mode.

Perform the following steps if the Frequency Response is outside the speciﬁcation.

1. Connect the precision video generator to one of the CMPST A input connectors and terminate the other connector with the precision terminator.

2. Set the precision generator for 700 mV Multiburst. The top packet must be

5.75 MHz.

3. Press the CONFIG button.

4. Navigate to Utilities > Calibration, and then press SEL.

elect Composite Freq Peak and then press SEL.

5.S

6. Follow the on-screen instructions to adjust the response.

7. Follow the instructions at the bottom of the screen to Save and Exit calibration

mode.

8. Repeat the Composite Analog Frequency Response test in the Performance Ver iﬁcation procedure.

WFM8200 and WFM8300 Waveform Monitors Service Manual 3–5

Adjustments

Analog Audio Level Mete r Accuracy Over Frequency

If any of the Ana

log A Inputs failed to meet the speciﬁcation, (or even if they are off by more than a few tenths of a dB) the following input adjustment can be performed.

1. Set the analog audio generator as follows:

Control Setting

Frequency 1 kHz

Output Level

Output Impedance 10 Ω

18 dBu Audio Tone

2. Connect the generator balanced (BAL) analog output to the Analog A input

that requires adjustment.

3. Press the CONFIG button.

4. Navigate to Utilities > Calibration, and then press SEL.

5. Push the up or down arrow key until the desired Analog Audio input channel

is highlighted, and then press SEL.

6. Follow the instructions at the bottom of the screen t o Save and Exit calibration

mode.

7. Check for an indication of 18 dBu in the newly adjusted audio bar.

8. If multiple inputs require adjustment, repeat this procedure for each input.

9. Afte

r all adjustments are made, you should perform a complete performance

veriﬁcation procedure.

3–6 WFM8200 and WFM8300 Waveform Monitors Service Manual

Maintenance

General Maintenance

This section contains the information needed to perform periodic and corrective maintenance on the instrument. The following subsections are included:

Preventing ESD –Generalinformationonpreventing damage by electrostatic discharge.

Inspection and Cleaning – Information and procedures for inspecting and cleaning the instrument.

Troubleshooting – Information for isolating and troubleshooting failed modules. Included are instructions for operating the diagnostic routines and troubles routines to speed fault isolation to a module.

hooting trees. Most of the trees make use of the internal diagnostic

Preventing ESD

Removal

removing and replacing modules in the instrument.

Repack

e servicing this product, read the Safety Summary and Introduction at the

Befor front of the manual, and the ESD information below.

CAUTION. Static discharge can damage any semiconductor component in the

instrument.

When perfo 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. Transpor

or on a metal rail. Label any package that contains static-sensitive boards.

and Replacement Procedures – Information and procedures for

aging Instructions – Information on returning a instrument for service.

rming any service that requires internal access to the instrument,

t and store static-sensitive modules in their static protected containers

3. Dischar wrist strap while handling these modules. Service 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.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–1

ge the static voltage from your body by wearing a grounded antistatic

General Maintenance

6. Do not slide the

7. Avoid handling circuit boards in areas that have a ﬂoor or work-surface

Inspection and Cleaning

Inspection

describes how to clean the exterior and interior of the instrument. Inspection and cleaning are done as preventive maintenance. Preventive maintenance, when done regularly, may prevent malfunction and enhance reliability.

Preventive maintenance consists of visually inspecting and cleaning t he instrument and using general care when operating it.

How often maintenance should be performed depends on the severity of the environment in which the instrument is used. A proper time to perform preventive maintenance is just before any instrument adjustment.

General Care

The cabinet helps keep dust out and should normally be in place during operation.

WARNING. To prevent injury or death, power off the instrument and disconnect it

from line voltage before performing any procedure that follows.

covering capa

and Cleaning describes how to inspect for dirt and damage. It also

circuit boards over any surface.

ble of generating a static charge.

rior Cleaning

Inte

Exterior Cleaning

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

rinse with deionized water.

and

Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle brush. If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol

olution. Use a swab to clean narrow spaces around controls and connectors. Do

s not use abrasive compounds on any part of the instrument that may damaged by it.

CAUTION. Avoid the use of chemical cleaning agents that might damage the

plastics u sed in the instrument. Use only deionized water when cleaning the front-panel buttons. Use a glass cleaner to clean the LCD. For the rest of the instrument, use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative.

4–2 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Inspection – Ex

terior. Inspect the outside of the instrument for damage, wear, and

missing parts, using the following table as a guide. Immediately repair defects that could cause personal injury or lead to further damage to the instrument.

Table 4-1: External inspection checklist

Item Inspect for Repair action

Cabinet, front panel, and cover

Front-panel knobs Missing, damaged, or loose

Connectors

Carrying handle and cabinet feet

Accessories

Cracks, scratches, deformations, damaged hardware

knobs

Broken shells, cracked insulation, and deformed contacts. Dirt in connectors

Correct operation Repair or replace defective

Missing items or parts of items, bent pins, broken or frayed cables, and damaged connectors

Cracks Replace the LCD assemblyLCD

Dirty

Repair or replace defective module

Repair or replace missing or defective knobs

Repair or replace defective modules. Clear or wash out dirt

part

Repair or replace damaged or missing items, frayed cables, and defective modules

Clean with glass cleaner

Inspection – Interior. To access the inside of the instrument for inspection and

ning, you will need to remove the top cover.

clea

Inspect the internal portions of the instrument for damage and wear, using Table

as a guide. Defects found should be repaired immediately.

4-2

If any circuit board is repaired or replaced, see if it is necessary to adjust the

strument. (See Table 4-2 on page 4-3.)

CAUTION. To prevent damage from electrical arcing, make sure that circuit

boards and components are dry before applying power to the instrument.

Table 4-2: Internal inspection checklist

Item Inspect for Repair action

Circuit boards

Resistors Burned, cracked, broken,

Loose, broken, or corroded solder connections. Burned circuit boards. Burned, broken, or cracked circuit-run plating.

blistered condition.

Remove and replace damaged circuit board.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–3

General Maintenance

Table 4-2: Internal inspection checklist (cont.)

Item Inspect for Repair action

Solder connections Cold solder or rosin joints.

Capacitors

Wiring and cables Loose plugs or connectors.

Chassis Dents, deformations, and

Damaged or leaking cases. Corroded solder on leads or terminals.

Burned, broken, or frayed wiring.

damaged hardware.

Resolder joint and clean with 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 instrument interior, perform the

ing 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 cotton-tipped

icator is useful for cleaning in narrow spaces and on circuit boards.)

appl

STOP. If, after doing steps 1 and 2, a module is clean upon inspection, skip

emaining steps.

the r

3. If steps 1 and 2 do not remove all the dust or dirt, the instrument may be spray hed using a solution of 75% isopropyl alcohol by doing steps 4 through 6.

was

4. Gain access to the parts to be cleaned by removing easily accessible shields

d panels.

5. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the

ajority of the alcohol to evaporate.

6. Dry all parts with low-pressure, deionized air.

Lubrication. There is no periodic lubrication required for the instrument.

4–4 WFM8200 and WFM8300 Waveform Monitors Service Manual

Troubleshooting

General Maintenance

The procedures in this section will help you trace the root cause of a problem back to one of the replaceable modules. 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 Saf this manual.

ety Summary and Service Safety Summary found at the beginning of

Getting Started

To prevent refer on how to prevent ESD. (See page 4-1.).

This pro

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

The WFM8200 and WFM8300 Waveform Monitors are highly conﬁgurable and beha

The installed options are as expected. See CONFIG > Utilities > View Ins

The current settings support the expected behavior. A good ﬁrst step is to rec Factory Preset.

properly test this instrument, you must have appropriate signal sources.

To 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.

possible injury to service personnel or damage to electrical component,

cedure consists of two main sections: the ﬁrst section contains the

Unknown Problem section in the Symptoms and Causes table.

vior is sometimes complex. Before troubleshooting in-depth, verify that:

trument Options

all the Factory Presets. To do this, press PRESET > Recall Preset > Recall

These instruments consist of several boards and major components. Some of these are optional, as shown below. The objective of this troubleshooting guide is to isolate a problem to a module or board so it can be replaced. This guide does not provide information to troubleshoot to the component level.

Standard boards and modules:

Power Supply

Display Assembly (LCD, Front Panel board w ith buttons, LEDs, and knobs)

Main board

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–5

General Maintenance

Optional board

SDI input, for instruments without Option EYE or PHY

Eye, for Option EYE or PHY

Composite input, for Option CPS

Audio Main, for Option AD and DPE

Analog Audio, for Options AD and DPE

Dolby Deco

der module, for Option DPE

NOTE. Option DPE replaces Option DDE.

Table 4-3: Required test equipment

Test equipment Requirements Example

SDI s erial digital video test generator with embedded audio and composite signal source.

Varies with installed options: SD - Need SD SDI source HD - Need HD SDI source 3 G b/s - Need 3 Gb/s SDI source CPS - Need composite SDI source

1080p 59.94 3 Gb/s HD signals required:

100% color bars

SDI Matrix Split Field Pathological

Signal

1080i 59.94 HD signals required:

100% color bars

10 bit shallow ramp

Tektronix TG700 with an HD3G7 module (Embedded audio needed for audio options)

Tektronix TG700 with HDVG 7 module (Embedded audio needed for audio options)

SDI Matrix Split Field Pathological

Signal

100% sweep

525/270 SD signals required:

100% color bars

10 bit shallow ramp

SDI Matrix Pathological Signal

100% sweep

Composite signals required for Option CPS: NTSC SMPTE bars

XGA Monitor Computer monitor c apable of 1024 x 768

x60Hzscanrate

AES Audio Signal Generator (If any audio option installed)

Analog Audio Signal Generator (If any audio option installed)

48 kHz, 24 bit word length signals

Tektronix TG700 with DVG7 module (Embedded audio needed for audio options)

Tektronix TG700 with AVG7 module

Rohde & Schwarz UPV, Tektronix AM700 and AM70.

4–6 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Table 4-3: Required test equipment (cont.)

Test equipment Requirements Example

Voltmeter Fluke 87 or equivalent

DC Ammeter with Clamp on pickup 20 Amp DC capable

Oscilloscope

Video trigger capability

Fluke 336 or equivalent

Tektronix TDS3000C Series, Tektronix DPO70404

Table 4-4: Symptoms and causes

Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow

No LE Ds lit and/or LCD not working

Inconsistent or partial hardware failures

Fails any of these Power On Diagnostics:

Main Board Option

Main Board Power Supplies

Main Board Sensor

Perform general checks

Perform primary power supply checks

Perform secondary power supply checks

Perform Front Panel button Troubleshooting

Perform LCD troubleshooting test

Replace main circuit board or Front Panel assembly as indicated by above tests

Perform primary power supply checks

Perform secondary power supply checks

Examine Power-up Diagnostics results in the Diagnostic Log

Run Advanced Diagnostics

Replace Main circuit board

Review messages in diagnostic log

Perform primary power supply checks

Perform secondary power supply checks

Run Advanced Diagnostics and look for other information

Replace the main board

Main Board Serial EEPROM

Main Board Serial FLASH

DSPFPGAA/BCOMM

DSP FPGA A/B Program

Display FPGA COMM

Display FPGA Program

Fails any of these Power On Diagnostics:

Composite DAC Comm:

Composite SPI Comm:

Front Panel Version

Information

Review messages in diagnostic log

Perform primary power supply checks

Perform secondary power supply checks

Run Advanced Diagnostics and look for other information

Replace the Composite board

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–7

General Maintenance

Table 4-4: Symptoms and causes (cont.)

Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow

Fails any of these Power On Diagnostics:

Eye Hardware Revision

Eye Board C able Version

Eye Register Readback

Eye Board Power Supply

Eye Board Cal EEPROM

Failures while running the advanced diagnostics:

DSP1 QDR1 Memory 1

DSP1 QDR2 Memory 2

DSP2 QDR1 Memory 1

Review messages in diagnostic log

Perform primary power supply checks

Perform secondary power supply checks

Run Advanced Diagnostics and look for other information

Replace the EYE/PHY board

Perform secondary power supply checks

Replace main board

DSP2 QDR2 Memory 2

DSY DDR Buffer 1 Memory

DSY DDR Buffer 2 Memory

DSY DDR Trig Buffer Memory

DSY SDRAM Buffer 1 Memory

DSY SDRAM Buffer 2 Memory

Diagnostic Log Message:

Fail

AUDIO_DSP_HEARTBEAT

No text or traces on LCD Perform LCD troubleshooting test

Traces on LCD but not on Ext Display output

Search for an intermittent problem in the audio board, cables, or main board.

Replace Main board

4–8 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Table 4-4: Symptoms and causes (cont.)

Symptom Possible Sources or Recommended Detailed Troubleshooting Procedure to follow

Functional Test Failures

Performance Veriﬁcation Test Failures

In case of failure on either Functional or the Performance tests, the board at fault is generally obvious. Before replacing 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 isolate the problem, then replace the main board if the test is in one of the following areas:

SDI

Composite

Ref

LTC

XGA output

Color Palette

Remote I/O

Unknown Problems

An instrument may come into service with vague or intermittent symptoms. In a case like this, the following set of tests may help ﬁnd the problem or the marginal condition.

Ethernet

If the problem is only the SDI input, ﬁrst replace the SDI or E ye board (depending on option). If that does not ﬁx the problem replace the main board.

If the problem is Composite, replace the composite option board. If the problem persists then replace the main board.

If the problem is in the audio board, ﬁrst check the diagnostic log for audio power-up self test failures or audio DSP programming failures. If the problem persists, replace the audio board.

1. Check the diagnostic log. This log r ecords 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. Perform the incoming inspection tests. This will 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.

4. If the unit has an audio board, remove it and recheck 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.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–9

General Maintenance

Detailed Troubleshooting Procedures

The following tests should b e run as indicated in the Symptom and Causes table. (See Table 4-4 on page 4-7.). The procedures check for speciﬁcproblemsor 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 ﬁ na

l recommendation identifying a root cause might be suspect.

General Checks

Fan Failures

1. Verify that the power cord is connected.

2. Check that all internal cables are correctly connected and seated.

3. Check for any discolored or burned components.

This ins software. Hardware controls the fans to a certain speed, but software sets the speed target as a function of the temperature measured on a variety of temperature sensors.

If a fan fails, its corresponding LED on the Main board lights.

A fan failure is sensed through tachometer feedback; a fault will be asserted if the f working correctly.

If o level, causing the remaining fan to run at m aximum speed.

13.5 V depending on temperature and the options installed on the instrument.

trument contains two fans, They are controlled by both hardware and

Fan 1 fails: LED DS12 lights

Fan2f

an is not connected, is stalled, or if the tachometer feedback line is not

ne fan fails, the control circuit will increase the voltage to the 13.5 V max

e normal voltage to drive the fans (pin 1) varies from about 6 V to

ails: LED DS11 lights

f a fan is not spinning, measure the voltage on pin 1 of the connector on that

I fan. If the voltage is near 13 V, then replace the fan. If the voltage is not above 10 V, then replace the main board.

If both fans are spinning, but either LED DS11 or DS12 is lit, the problem is probably the tachometer feedback line on pin 3 of either fan. Inspect the wiring and resistors R637, R635, R638, and R636 on the main board, and use the oscilloscope to look for a 3.3 V square wave on the tachometer feedback line. Replace the affected fan if resistors are intact but there is no signal on the tachometer line.

4–10 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Primary Power Supply

Tests

This section de power supply.

WARNING. Some parts of this test may 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 90 to 264 VAC and outputs 3 DC voltages: +5 V main,+5Vstandby,and+12V.The+5Vstandby is always present and powers the on/off +12 V supplies are turned on or off by the front panel power button.

There is a is a useful indicator, but does not ensure that the voltage is within tolerance. There are also several red LEDs that provide information on the health of other supplies on the board. DS5 is a red LED that lights when the fused +5 V supply is low. DS6 lights when the +3.3 V supply is low, and DS7 indicates when the +1.5 V supply is low.

If the main power supply output is correct, between 4.80 V and 5.25 V (measured at connector J22), check the eight fuses in the 5 V system near the main board power both sides. If not, replace the fuse.

connector J22. (See Figure 4-1 on page 4-20.). All should have 5 V on

scribes methods for verifying the proper operation of the primary

switch and the reverse voltage shutoff circuit. The +5 V main and

green LED, DS19, that will be lit if some 5 V power is present. This

e main power supply output voltage is zero (measured at J22 pin 1), then

If th check the AC input circuit. The AC 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 not correct at any point, replace the element in the chain that is not passing the AC input. If the input voltage is correct, check the +5 V standby supply at connector J25 pin 2. If the standby supply is zero, then

place the main power supply. If it is between +4.5 V and +5.5 V, check the

re power supply inhibit line at J25 pin 5. If the power supply inhibit line is low, then replace the main power supply. If the power supply inhibit line is high, and the unit does not respond to a front panel power button press, then try a new front panel. If that does not correct the problem, there may be a main board failure in the power switch circuit.

If the voltage at the output of the supply is not zero, but still not correct, check the input voltage. If the input voltage is in the correct range, then disconnect the cable at J22 from the main board and recheck the output voltage. If the voltage is still not correct then replace the power supply.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–11

General Maintenance

Secondary Power Supply

Tests

If the no-load o

utput voltage is correct, then reattach the cable to the main board and measure the current by clamping the ammeter around the red wire. If the current is less than 20 Amps, and the voltage is still bad, then replace the power supply. If the current is more than 20 Amps, then remove module boards and recheck the current. If it is still high then replace the main board. If not then test with one option board at a time to ﬁnd the one with excess current and replace that board.

There are multiple secondary supplies that are derived from the main 5 V supply. Be sure all eight 5 V fuses are good (as noted in Primary Power Supply Tests) before ch

ecking the secondary supplies.

First, check the LEDs near the rear left side of the instrument. Green LED DS19 ind

icates there is some 5 V from the main supply.

Next, check if any of the three Red LEDs (DS5, DS6, or DS7) are on. These

e failures on the general 5 V, general 3.3 V, and processor 1.5 V supplies,

indicat respectively. If these are lit, the most likely causes are the fuses near J14, but if those are all OK replace the main board.

Next, check the secondary supplies as shown in the table. (See Table 4-5.) Each supply has a test point in the rear left corner of the Main board. (See Figure 4-1 on page 4-20.) If any supplies are out of range, replace the main board.

Table 4-5: Main board secondary supplies

nal (+V)

Nomi

1.8 1.7 to 1.9 + 1.8 V

Fan 5 to 13.5 FAN_PWR

3.3 3.2 to 3.4 + 3.3 V

2.5 2.4 to 2.6 + 2.5 V

1.0 0.95to1.05 +1.0V

+5A 4.75to5.25 +5VA

1.2 1.2 to 1.4 + 1.2 V

wed range (+V)

Allo

5to5.25

4.7

4to1.6

4.75 to -5.25

Labe

+5V

.5 V

5VA

–

led as

Check the Audio supplies on the Audio board (if an Audio board is installed). (See Table 4-6 on page 4-13.). The test points are available with the board installed. (See Figure 4-2 on page 4-21.).

4–12 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Table 4-6: Audi

Supply name Range Measured at

+1.5 V 1.425 to 1.575 TP6

+3.3 V 3.1 to 3.6 TP8

-5 V -4.5 to -5.5 TP9

+5V 4.75to5.2 TP10

+1.26 V 1.20 to 1.32 TP11

+1.8 V 1.71 to 1.89 TP95

o main board secondary supplies

Check the secondary supplies on the Analog audio board, if installed. This is the smalle

r audio card to which the 62 pin DSUB connector is mounted. The test points are available, with the board installed, along the top front edge of the board. (See Figure 4-3 on page 4-22.).

Table 4-7: Analog audio secondary supplies (board not present for option DS instrument)

Supply name Range Notes

+15 V 14 to 15.5 TP901

3.6

15.5

TP803

TP2

–15 V –14 to -

+5 VD 4.8 to 5.2 TP5

+5 VA 4.8 to 5.2 TP3

+3.3 V 3.1 to

–5 V –4.5 to -5.5 TP1

Front Panel Button

Troubleshooting

The Eye board also has multiple secondary supplies, and test points along the

dge where they can be probed. The Power-up Diagnostics measure these,

top e so they are not included in this procedure. Note that some of these supplies are only active in either SD or HD mode, so it is normal for some of them to not be present in some operating modes.

Perform this test if the power supplies are good, but none of the buttons are lit or respond to presses.

1. Cycle the power to the unit. Immediately after power on, three buttons

(GAIN, SWEEP, and MAG) should be lit continuously and the other buttons should be lit one at a time in a walking pattern.

2. If the buttons are not lit, check the 10 pin cable from the keypad to the main

board J21. If the cable is connected and good then replace the front panel assembly.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–13

General Maintenance

LCD Troubleshooting

Perform this te nominal.

1. Connect an ext instrument.

2. Cycle the po display the boot up messages and normal operational screen, replace the main board.

3. If the external monitor does show the nominal screen, check the gray ribbon cable from the internal display to J17 on the main board. This carries the XGA data to the display.

4. If the gray ribbon cable is OK, check to see if the backlight is on. Look into the vent holes along the left side of the bezel while you cycle the power. You should see the backlight come on when power is reapplied. It may help to be in a low light area to see the backlight.

5. If the backlight is on, replace the front panel assembly.

6. If the b acklight is not on, check the backlight power cable from the backlight

inverter (on the rear of the display assembly) to the main board J18. Also check connector J18 itself for any solder issues.

7. If the backlight is still bad, replace the front panel assembly – although there is still a small chance the problem is in the main board.

st if there is no display on the LCD, but the power supplies test as

ernal XGA monitor to the “Display” output on the rear of the

wer and watch the external monitor. If the monitor does not

oPower-Up

Audi

Diagnostic 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.

Audio Power-up Diagnostic Detailed Information. The Power-up Diagnostic does the following:

Reads all of the AES decoder internal registers and veriﬁes that what is read is correct

Reads all of the D/A internal registers and veriﬁes that what was read is correct

Performs an active-bit test on the A/D output clocks

Checks the serial EEPROM to see which of the analog inputs have been calibrated

Tests the Audio DSP/FPGA interface

The main CPU detects if the DSP heartbeat fails. This condition will be shown in the diagnostic log

4–14 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

For audio board

s, not all errors are reported by the power on 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, the main board, or the connection between them.

1. Prepare a test oscilloscope with the following settings:

Control Setting

Vertical Scale 2.00 V/div

Horizontal Scale 5.00 µs/div

2. If the diagnostic log contains an entry that reads Fail Audio DSP Self Test

fpga, do the following substeps:

a. Check audio board DS511, the FPGA programmed indicator in the Main

board power supply test points and LEDs. (See Figure 4-1 on page 4-20.). If this LED is off, skip to step b; otherwise probe pin D21 of connector J641 of the Audio board (the connector to the Main board) during the

equence. If the signal on the pin toggles, replace the main board;

boot s otherwise, replace the audio board.

b. Probe

pin D20 of J641 on the audio board during the boot sequence. If the

signal does not exhibit a low-to-high transition, replace the main board.

c. Prob

e pins A11 and B11 of connector J641 during the boot sequence. If

the signal on either of these pins does not toggle, replace the main board.

d. Pro

be pin D19 of J641 on the audio board during the boot sequence. If the

signal does not exhibit a low-to-high transition replace the audio board.

all signals in a through d are correct replace the audio board.

e. If

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–15

General Maintenance

3. If the Diagnost perform the following procedure:

a. Check to see if

pressing the Main button, then CONFIG and selecting Utilities > View

HW/SW Version.

b. If there is an audio option listed, suspect the audio board; otherwise,

proceedtostepc.

c. Probe pins E15 through E22 and pins D16, 17, 18, and C17 on the audio

board connector J641, and verify that the signals on all pins are toggling. If any signals are not toggling, replace the main board.

d. Probe pins C15, C16, and C18 on connector J641 during boot up and

verify that the signals toggle. If they are not toggling, suspect the main board.

e. Probe pin B21 on audio board connector J641 during the boot sequence.

If the signal does not toggle, replace the audio board; otherwise, replace the main board.

f. If all of these steps pass, replace the audio board.

ic Log screen reports the failure Audio DSP Self Test-dsp0,

the audio board is recognized by the main board by

4–16 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

4. If the Diagnost following procedure:

a. Check to see if

following.

i. Press and

ii. In the audio menu, select Aux Display > Surround Display.

iii. Press the Audio Input Menu button, then select Audio I nput > AES A.

iv. Connect an AES test tone generator to the AES A IN 1, 2 connector.

b. Ifthereisnothingdisplayedonthesurrounddisplay,proceedtostepc;

otherwise, replace the audio board.

c. Probe pins E15 through E22 and pins D16, 17, 18, and C17 on audio

board connector J641, and verify that the signals on all pins are toggling. If any signals are not toggling, replace the main board.

d. Probe pins C15, C16, and C19 on connector J641 during the boot

sequence, and verify that the signals on the pins toggle. If they do not toggl

e. Probe pin B22 on audio board connector J641. If the signal on the pin does

oggle, replace the audio board; otherwise replace the main board.

not t

ics log reports Audio DSP Self Test-dsp1, perform the

surround display is functioning correctly by doing the

hold the Audio button.

e, suspect the main board.

amine Power-Up

Diagnostics Results in

the Diagnostic Log

f. If all of these steps pass, replace the audio board.

5. If the Power-Up Diagnostics screen reports Audio DSP Self Test - X,where

X is any other number or string, replace the audio board.

To examine the Power-up Diagnostics results, press the CONFIG button, then select Utilities > View Diagnostic Log.

Each power on is indicated by a boot time stamp, followed by a list of power on tests. If any failures are indicted then refer to the action as noted above.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–17

General Maintenance

Run Advanced Diagnostics

Isolating Lissajous Display

Errors

To run the Adva n

ced diagnostics, press the CONFIG button, then select Utilities

> RunAdvancedDiags.

Advanced Diagnostics includes tests that check interfaces between FPGAs and memory on the Main board. If any of these tests fails, replace the Main board.

The audio Lissajous phase display uses a serial data path between the audio and main boards. A failure in this data path can be due to a problem on either board.

Perform the following tests to isolate the problem to one board or the other.

1. Prepare a test oscilloscope with the following settings:

Control Setting

Vertical Scale 2.00 V/div

Horizontal Scale 200 ns/div

2. Check the Lissajous bus clock by performing the following substeps:

a. Put the oscilloscope probe on pin B3 of connector J641 on the audio

board. Verify the signal is ≈3V

and is a continuous 50% duty-cycle

p-p

squarewave.

b. If the signal at J641 is not as described in step a, the audio board most

likely has a failure; otherwise, replace the main board.

Option EYE/PHY

Troubleshooting

3. Check the Lissajous bus frame and data signals by performing these substeps:

a. Put the oscilloscope probe on connector J641 pin B2 of the audio b oar

and verify the signal is ≈3V

and toggles low at regular intervals.

p-p

b. If the signal on pin B2 looks OK, put the oscilloscope probe on pin B4.

Pin B4 is the data line and the signal will have a s omewhat 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 J641 the audio board most likely has a failure,

otherwise replace the main board.

The EYE/PHY functions depend on the EYE and Main boards, and the interconnections between them.

Major Operational or Diagnostic Failure.

Check that the 110 pin CPCI connector between the Eye and Main boards is correctly seated and secure.

Check that the ribbon cable from the Eye board to the main board is securely plugged into J5 on the eye board and J16 on the main board.

4–18 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

Eye Pattern or J

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 are controlled by circuits contained on the Eye board.

Cable Loss,

measurements a re 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. Replace the EYE/PHY board.

Jitter Re

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 Probl

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.

adout and Jitter Meter Problems. These measurements are derived from

ems. These readouts are only available with Option PHY. These readouts

itter Waveform Display Problems. Jitter waveform display is

Approx Cable, and Source Level Readout Problems. These

It is normal for these measurements to stop or become intermittent if there is excessive waveform noise, aberrations, jitter, or cable loss.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–19

General Maintenance

Figure 4-1: Main board power supply test points a nd LEDs

4–20 WFM8200 and WFM8300 Waveform Monitors Service Manual

General Maintenance

ure 4-2: Audio Main board power supply test point locations

Fig

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–21

General Maintenance

Figure 4-3: Analog audio board power supply test point locations

4–22 WFM8200 and WFM8300 Waveform Monitors Service Manual

Removal and Replacement Procedures

This section contains information about removal and replacement of all modules in the waveform monitor.

Preparation

WARNING. Before doing this or any other procedure in this manual, read the

safety summaries found at the beginning of this manual. Also, to prevent possible injury to service personnel or damage to the instrument components, read Installation in Section 2, and Preventing ESD in this section.

This subsection contains the following items:

This preparatory information that you need to properly do the procedures that follow.

Removal and Replacement Procedures

List of tools required to remove and disassemble all modules.

Procedures for removal and reinstallation of the modules.

WARNING. Before doing any procedure in this subsection, disconnect the power

cord from the line voltage source. Failure to do so could cause serious injury or death.

NOTE. Read Equipment Required for a list of the tools needed to remove and

install modules in this instrument. (See Table 4-8 on page 4-24.) Read the cleaning procedure before disassembling the instrument for cleaning.

Equipment Required. Most modules in the instrument can be removed with a screwdriver handle mounted with a size T-10, Torx screwdriver tip. All equipment

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–23

Removal and Replacement Procedures

required to rem

ove and reinstall the modules is listed in the following table. (See

Table 4-8 on page 4-24.)

Table 4-8: Too

Item no. Name Description

2T-10Torxtip

3T-15Torxt

9 Bomar DB36400

11 Long nose pliers Used to compress connector lock

ls required for module removal

Screwdriver handle

1/8 inch ﬂ screwdriver

Angle-T

/16inch nut driver

/16inch nut driver Used to remove nut on AC ground

MA-800G Soldering Aid (spud

Soldering iron (15 W) Used for replacing Main board

at-bladed

ip Tweezers

ger)

Accepts Torx-driver bits 620-440

Used for removing most instrument screws. Tor screw heads

Used for removing instrument screws. Torx-driver bit for T-15 size screw hea

Screwdri connectors

Used to remove front panel knobs Standard tool

Used to r front panel standoffs

lug

Used to remove the front panel trim Standard tool

Spec Controlled Torque. Used to remove Audio board BNCs

fus

x-driver bit for T-10 size

ver for unlocking cable

emove jack screws and

ial BNC socket wrench with

General Tool number

640-235

640-247

Standard

Standard tool

–––––

Standard tool

tool

andard tool

4–24 WFM8200 and WFM8300 Waveform Monitors Service Manual

Module Removal

Removal and Replacement Procedures

The r emoval of most of the modules is a straightforward process, and can be determined by a quick study of the exploded diagrams in the Replaceable Parts List. The following table shows what to remove to access each module. (See Table 4-9 on page 4-25.)

st remove

audio

supply

odule removal

Top Cover

To remov e

Audio

Composite SDI/EYE/P

assy

The top cover is a slip-lock design.

Power

supply Main

Bezel/

front

panel

board

Front

panel/

LCD assy

Table 4-9: M

You must ﬁr

Top cover X X X X X X X

Board supports X X X X X

Composite

SDI/EYE/PHY

Analog

Audio main X X

Main board

Power

Fan assembly X

Front panel/LCD assembly

Bezel/front panel board

1. Remove the six T-10 screws at the top cover front corners.

2. Remove the four T-10 screws securing the top cover to the rear panel.

lide the top cover back approximately ½ inch and then lift it from the chassis.

3.S

Board Suppo rts

The board supports span the width of the instrument chassis, holding the tops of the module circuit boards in place.

1. Remove the two T-10 screws securing each board support, and then lift them from the chassis.

2. When reinstalling the board supports, make sure that the module circuit boards line up with the slots in the board supports.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–25

Removal and Replacement Procedures

Composi

Rear Panel

te Board (Option

CPS)

The rear panel i which overlap and are bolted together. (See Figure 4-4 on page 4-26.)

Figure 4-4: Module securing screws

The Composite board, if installed, is located in the right module bay. (See Figure 4-4 on page 4-26.)

s formed by the chassis and the individual module rear panels,

SDI or EYE/PHY board

1. Remove the four T-15 screws securing the Composite module to the rear panel.

2. Lift the Composite module out of the instrument, rocking it gently until the

connector separates from J20 on the Main board. It may help to loosen the adjacent rear panel screws.

The SDI board (or EYE/PHY board if Option EYE or PHY is installed) is located in the right center module bay. (See Figure 4-4 on page 4-26.)

1. Remove the three T-15 screws securing the module to the rear panel.

2. Lift the module out of the instrument, rocking it gently until the connector

separates from J16 on the Main board. It may help to loosen the adjacent rear panel screws.

4–26 WFM8200 and WFM8300 Waveform Monitors Service Manual

Removal and Replacement Procedures

Audio Boards (Options AD

and DPE)

The Audio optio

n boards, if installed, are located in the left center module bay,

near the power supply. (See Figure 4-4 on page 4-26.)

NOTE. Option D PE replaces Option DDE.

DPE board. The circuit board for Option DPE may be removed without removing the entire Audio module.

1. Unsnap the spring clips at each end of the DPE circuit board.

2. Tilt the top of the DPE board away from the Audio Main board.

3. Lift the DPE board out of the instrument.

Analog Audio and Audio Main boards. Remove the entire Audio module as a unit. If necessary, the two boards may be separated.

1. Remove the four T-15 screws securing the Audio module to the rear panel.

2. Lift the Audio module out of the instrument, rocking it gently until the

connector separates from J4 on the Main board. It may help to loosen the adjacent rear panel screws.

3. Use a

/16inch nutdriver to remove the jackscrews securing the ANALOG

AUDIO connector on the rear panel you just removed.

Power Supply

4. Remove the special nuts securing the eight audio BNC connectors to the rear panel.

NOTE. Special nuts are used on the BNC connectors due to the close physical

spacing, and a special tool is needed to remove them. (See Table 4-8 on page 4-24.)

5. Remove the Audio module rear panel from the two circuit boards.

6. Separate the Audio module circuit boards at J130.

You may want to remove the audio board module ﬁrst for increased clearance, but it is not required.

1. Disconnect the brown, blue, and green/yellow primary wires from the line ﬁlter. (See Figure 5-1 on page 5-5.)

2. Disconnect the green/yellow ground wire from the chassis, using a

/16inch

nutdriver. (See Figure 5-1 on page 5-5.)

3. Disconnect the

10-pin cable from J14 on the Main board.

4. Disconnect the two wire cable from J22 on the Main board.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–27

Removal and Replacement Procedures

Fan Assembly

Front Panel/LCD Assembly

5. From outside th supply shield to the chassis.

6. Lift the power

7. Disconnect the line ﬁlter cable from CN1 on the power supply.

8. The power supply is secured to the shield by two screws and two posts.

Remove the two T-15 screws.

9. Lift the power supply off of the two posts and out of the shield.

Remove the fans and bafﬂe as a unit.

1. Remove the two T-10 screws, one on each side of the instrument chassis, that secure the bafﬂe to the chassis.

2. Use long nose pliers to compress the lock tab on the connector, and disconnect the fan power cables from J11 (Fan #1) and J12 (Fan #2) on the Main board. (See Figure 4-5 on page 4-29.)

3. Lift the bafﬂe out of the instrument.

Remov you may remove the Fan assembly ﬁrst.

e the front panel and LCD assembly as a unit. For additional clearance

e instrument, remove the four T-10 screws securing the power

supply out of the chassis.

1. Remo

2. Pul

3. Disconnect the cables connecting the Front panel/LCD assembly to the Main

ve the six T-10 screws that secure the front panel assembly to the

chassis, two on each side and two on the bottom.

l the front panel assembly forward, being careful of the Main board extension containing the headphone and USB connectors, until they clear the LCD bracket.

board at J27, J31, and J21. (See Figure 4-5 on page 4-29.)

4–28 WFM8200 and WFM8300 Waveform Monitors Service Manual

Removal and Replacement Procedures

Figure 4-5: Front panel and fan cable connections

Remove the bezel from the LCD assembly. Remove to bezel from the front panel

assembl

4. Remove the two T-10 screws that secure the LCD Assembly to the display

5. Use a Phillips screwdriver to remove the two Pozidriv screws securing the

6. Tilt the bottom of the display bracket up and slide the display brackets out

y to access the front panel board. (See Figure 4-6 on page 4-30.)

bracke

m of the bezel to the display bracket.

botto

underneath the bezel clips, leading the front panel cable through the

from

cutout in the bracket.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–29

Removal and Replacement Procedures

Figure 4-6: Front panel disassembly

Remove the front panel board from the bezel. The front panel board can be

removed

from the bezel and replaced, if needed. (See Figure 4-7 on page 4-30.)

1. Remove the three knobs from the front panel.

2. Remove the one T-10 screw that secures the front panel to the bezel.

3. Use a

/16inch nutdriver to remove the two jackscrews that secure the front

panel board to the bezel.

4. Lift the front panel board away from the bezel.

Figure 4-7: Front panel board removal

4–30 WFM8200 and WFM8300 Waveform Monitors Service Manual

Removal and Replacement Procedures

Main Board

You will need to

remove all of the rear panel modules, the power supply, and the front panel before removing the main board. The main board is the largest board in the instrument and spans the length and width of the chassis bottom.

1. Remove all of the rear panel modules, the power supply, and the front panel.

2. Use a

ch nutdriver to remove the 6 jackscrews from the rear panel: two

/16in from the Remote connector, two from the Pix Mon connector, and two from the Ext Display connector.

3. Remove the special nuts securing the three BNC connectors to the rear panel.

NOTE. Special nuts are used on the BNC connectors due to the close physical

spacing, and a special tool is needed to remove them. (See Table 4-8 on page 4-24.)

4. Remove the eleven T-15 screws that secure the main board to the chassis.

5. Grasp the main board from the front of the instrument, tilt it up slightly, and

then pull it toward you, clearing the rear panel BNCs and connectors and removing the main board from the chassis.

WFM8200 and WFM8300 Waveform Monitors Service Manual 4–31

Repackaging Instructions

This section contains the information needed to repackage the instrument for shipment or storage.

Packaging

When repacking the instrument for shipment, use the original packaging. If the packagi representative to obtain n ew packaging. Refer to Contacting Tektronix on the back of the Title page 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.

ng is unavailable or unﬁt for use, contact your local Tektronix

If the instrument is being shipped to a Tektronix Service Center, enclose the following information:

The RMA number.

The ow

Name and phone number of a contact person.

Type and serial number of the instrument.

Reason for returning.

A 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.

ner’s address.

4–32 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

This section contains a list of the replaceable modules for your instrument. 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 represent

Changes to Tektronix products are sometimes made to accommodate improved componen improvements. Therefore, when ordering parts, it is important to include the following information in your order:

ative.

ts as they become available and to give you the beneﬁt of the latest

Part number

ment type or model number

Instru

Instrument serial number

Instrument modiﬁcation number, if applicable

Modu

le Servicing

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.

dule 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 u s for repair, after which we will return it to you.

New Modules. You may purchase replacement modules in the same way as other replacement parts.

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–1

Replaceable Parts

Using the Replaceable Parts Lists

This section contains lists of the mechanical and/or electrical components that are replaceable for your instrument. Use this list to identify and order replacement parts. The following table describes each column in the parts list.

Parts list column descriptions

Column Column name Description

2 Tektronix part

3 and 4

Figure & index number

number

Serial number Column three indicates the serial number at which the part was ﬁrst effective. Column four

Qty This indicates the quantity of parts used.

Name & description An item name is separated from the description by a colon (:). Because of space limitations,

Items in this section are referenced by ﬁgure and index numbers to the illustrations that follow. Orderable modules show the ﬁgure number without an index number.

Use this part number when ordering replacement parts from Tektronix.

indicates the serial number at which the part was discontinued. No entry indicates the part is good for all serial numbers.

an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for further item name identiﬁcation.

Abbreviations

Abbreviations conform to American National Standard ANSI Y1.1-1972.

5–2 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

Table 5-1: Circ

Fig. & index number

uit boards and connectors (See Figure 5-1.)

Tektronix par number

Serial

no. effective

Serial no. discont’d Qty Name & description

5-1

-1 671-5764-04

-2 671-6478-00

-3 119-7167-00

-4

-5

-6 131-7881-00 1

-7

-8 870-0109-01 1

-9 119-7522-00 1

-10 407-5373-00 1

-11 174-5791-00 1

-12 441-2575-00 1

-13 134-0246-01

-14 210-0457-00 1

-15 211-0119-00 2

-16 131-4131-00 1

-17 211-0734-00 4

-18 119-7086-00 1

-19 211-0950-00 4

-20 220-0497-00

-21 210-1039-00 27

-22 214-3903-00 6

-23 211-0722-00 11

-24 131-7721-00 1

-25 131-8089-00 1

870-0189-00

Option EYE or PHY

870-0196-00

Option SDI

870-0258-00 1

131-7717-00 1

Circuit Boards and Connectors

CIRCUIT BD SUBASSY; ANALOG AUDIO OPTION BD

CIRCUIT BD SUBASSY; AUDIO MAIN OPTION BD, SAFETY CONTROLLED

CIRCUIT BD ASSY; CAT552 DOLBY E/DIGITAL DECODER MODULE; 72 PIN SIMM; SAFETY CONTROLLED

CIRCUIT BD SUBASSY; 3G-EYE; TESTED

CIRCUIT BRD ASSY;SDI,UNTESTED,3893982XX, ,ROHS COMPLIANT

CIRCUIT BD SUBASSY; COMPOSITE, 389-4150-00 WIRED, ROHS COMPLIANT

CONN,IO; PCB,USB,SERIES A;FEMALE,RTANG ON EDGE,1 X 4, 2.5MM CTR,13.90 H X 2.0 TAIL,30 GOLD,W/BOARD RETENTION

CONN,JACK PHONE; PCB/PNL;FEMALE,RTANG,3 POS,4 TERM

CIRCUIT BD ASSY; MAIN, TESTED, 3893980xx WIRED, ROHS COMPLIANT

POWER SUPPLY; 130W, AC-DC;90-264VAC 47- 440HZ IN, DC-DC 117 - 300VDC IN, OUTPUTS +5V@26A, +12V@0.5A, +5V@0.50A STANDBY, REMOTE INHIBIT: ACTIVE PFC;OPEN FRAME, 5X 3.0 X 1.3; UL, CSA, TUV, ROHS, SAFETY CONTROLLED

BRACKET;POWER SUPPLY;SAFETY CONTROLLED

CA ASSY,SP; HV,BR,15.00 L & 4.00 L;CONN EACH END;LINE FILTER TO PWR SUPPLY, SAFETY CONTROLLED

CHASSIS, MODULE

PLUG,HOLE COVER; BUTTON PLUG,;0.578 HEAD DIA X 0.406 THK,ACCOM 0.5 DIA HOLE,0.015-0.125 THK PNL,NYLON,BLACK,94V-2;

NUT,PL,ASSEM WA; 6-32 X 0.312,STL CD PL,W/LOCKWASHER, STEEL, ZINC FINISH

SCREW, MACHINE; 4-40 X 0.25, FLH, 100 DEG, STEEL, BLACK ZINC, POZ

CONN,PLUG,ELEC; MALE W/LOCKING ADPTR,EXT MTG,SAFETY CONTROLLED

SCREW,MACHINE; 6-32 X 0.250,FLH100,STEEL,ZINC FINISH,T-10 TORX DR

FILTER,EMI; AC LINE CONNECTOR/INPUT FILTER;6.0A,120-250VAC,DC-400 HZ,2.2 NF CY,100 NF CX,IEC INPUT,FAST-ON/SOLDER LUG OUTPUT,CHASSIS MOUNT,SAFETY CONTROLLED;FN9222-6/06

SCREW, MACHINE; M2X.4X3L, PHL, PNH, STEEL, ZINC FINISH

NUT,PLAIN,HEX; 0.5-28 X 0.562 HEX,BRS NI (NICKEL) PLATED

WASHER,LOCK; 0.521 ID,INT,0.025 THK, STEEL, ZINC FINISH

SCREW,JACK; 4-40 X 0.312 LONG,0.188 H HEX HEAD STAND OFF,4-40 INT THD, X 0.312 THD EXT 4-40

SCREW,MACHINE; 6-32 X 0.250,PNH,STL,CDPL,T-15 TORX DR

CONN,JACK; PCB/PNL,RJ45,CAT5E,W/LEDS YELLOW & GREEN/ORANGE,FEMALE,RTANG,8 POS,0.100 CTR,0.517 H X 0.13 TAIL,10/100/1000 BASE TX AND RX MAGNETICS MODULE, 30 GOLD, SAFETY CONTROLLED

CONN, DVI-I, FEMALE, RTANG, PANEL MOUNT

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–3

Replaceable Parts

Table 5-1: Circuit boards and connectors (See Figure 5-1.) (cont.)

Fig. & index number

-26 131-8271-00 3

-27 211-0722-00 10

-28 131-3378-

-29 333-4593-

-30 131-7582-00 1

-55

-31 131-7564-00 4

-32 131-M057-00 4

-33 220-027

-34

-35 333-4489-01 1

-36 200-4

-37 131-7272-00 1

-39 174-5653-00 1

-40 131-6521-00 4

Quantity will vary depending on instrument model and installed options.

Tektronix part number

333-4592-00 1

1-00

210-0410-00 2

214-3903-00 2

800-00

Serial no. effective

Serial no. discont’d Qty Name & descri

ption

CONN, RF, PLUG, BNC, FEMALE, RTANG, 75 OHM, SMT CENTER PIN, HIGH BW AND RETURN L

SCREW,MACHINE; 6-32 X 0.250,PNH,STL,CDPL,T-15 TORX DR

CONN,RF,JACK; BNC,50 OHM,FEMALE,RTANG,PCB/REAR PNL,0.5-28 THD,0.625 H X 0.187 TAIL,W/O MTG FLANGE,W/MTG POSTS,METAL BODY

REAR PANEL, SAFETY CONTROLLED, STD (SDI)

CONN,DSUB UPPER,SAFETY CONTROLLED

REAR PANE

CONN,RF PLUG; DUAL STACKED BNC,PCB,PNL MNT,FEMALE,RTANG,75 OHM, ZINC DIE

CONN,RF:PCB,FEMALE,BNC,75OHM,EDGE LAUNCH TYPE

SPANNER NUT AND LOCKWASHER

SCR,AS

SCREW,JACK; 4-40 X 0.312 LONG,0.188 H HEX HEAD STAND OFF,4-40 INT THD, X

0.312 T

PANEL, REAR; AUDIO OPTION

COVER,MINI; 2X FEX-440,SAFETY CONTROLLED

CONN, TAIL, 30 GOLD, 4-40 THD INSERTS, BOARD RETENTION, HIGH DENSITY CONN

E ASSEMBLY; POWER SUPPLY, HIGH CURRENT

CABL

CONTACT,ELEC; EMI,CLIP-ON,0.38 L X 0.500 W (2 CONTACTS) X 0.45

LECTROLESS NICKEL PLATE

H,E

OSS, LOW PROFILE, 0.515 TALL, 0.275 CENTER OFFSET, 30 GOLD

; PCB;FEMALE,RTANG,DUAL STACKED,15 POS HD LOWER,9 POS

L, SAFETY CONTROLLED, 3GEYE

CAST HOUSING

SEM WSHR; 4-40 X 0.437,PNH,STL,CDPL,T-10 TORX DR (STD)

HD EXT 4-40 (OPT AD OR DPE ONLY)

DSUB; PCB/PNL, FEMALE, 62 POS, RTANG, 0.100 CTR, 0.495 H X 0.125

5–4 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

Figure 5-1: Circuit boards and connectors

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–5

Replaceable Parts

Table 5-2: Chas

Fig. & index number

sis components (See Figure 5-2.)

Tektronix part number

Serial no. effective

Serial no. discont’d

5-2

-1 200-5100-00 1

-2 386-7435-00 2

-3 211-0734-00 18

-4 211-1117-00 2

-5

-6 129-1636-00 2

-7

-8 850-0125-00 1

-9 366-0859-01 3

-10 174-5652-00 1

-11 174-5428-00 1

-12 174-5485-00 1

-13 119-6554-00 2

-14 407-5372-00 1

-15 211-1050-00 8

-16 850-0124-00 1

-17 214-5152-00 1

850-0126-00 1

863-0209-00 1

Qty Name & description

Chassis Components

COVER, TOP CHASSIS; SAFETY CONTROLLED

SUPPORT, CIRCUIT BOARD

SCREW,MACHINE; 6-32 X 0.250,FLH100,STL,CDPL,T-10 TORX DR

SCREW,MACHINE; 4-40 X 0.187,PAN HEAD,STL,CD PL,T-10,TORX DR

BEZEL ASSEMBLY, FRONT PANEL; CONTROLLER

SPACER POST: 4-40M/F,0.687L,SST,0.188HEX

CIRCUIT BD SUBASSY;389410200;FP; ROHS COMPLIANT

FRAME; FRONT BEZEL,PC/ABS,TV GRAY, SAFETY CONTROLLED

ASSEMBLY, KNOB; .470 DIAMETER, SOFT TOUCH

CABLE ASSEMBLY; POWER SUPPLY, 10 PIN

CA ASSY; SHIELDED RIBBON ADAPTER TO XGA LCD DISPLAY, 20 PIN

CABLE ASSEMBLY DISPLAY INVERTER; 15 PIN; LED BACKLIGHT TO DISPLAY

FAN ASSEMBLY; 12V; 0.11A 1.3W, 28CFM, 2450RPM, 27DBA, 80MM SQ X 20MM); 6 IN, 3 LEAD WITH CONN, UL, CSA, VDE, SAFETY CONTROLLED

BRACKET; FAN MOUNTING, SAFETY CONTROLLED

SCREW,MACHINE; 6-32 X 0.312 L,PNH,STL CAD PLT,T15

FINAL ASSEMBLY; LCD DISPLAY MODULE; TESTED

SPRING,CLIP; EMI

5–6 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

Figure 5-2: Chassis components

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–7

Replaceable Parts

Table 5-3: Repl

Fig. & index number

5-3 Main Board

-1 159-5022-00 8

-2 260-5015-00 1

-3 159-5018-00 1

-4 159-5003-00 1

-5

-6 260-5015-00 1

-7

-8 131-7107-00 1

aceable parts list (See Figure 5-3.)

Serial Tektronix par number

159-5014-00 1

146-0109-00 1

no.

effective

Serial no. discont’d Qty Name & description

FUSE; 5.0A,125V;FAST BLOW,0.1 X 0.1 X 0.24,UL REG,CSA CERT;451005,SAFETY CONTROLLED

SWITCH, PUSH; SPST, TACT;50MA, 50V, MOMENTARY, SILVER CONTACTS;KSC221G, GULLWING SMD

FUSE; 3.0A,125V,FAST BLOW,0.1 X 0.1 X 0.24,UL REG,CSA CERT,SAFETY CONTROLLED

FUSE,THRM,CHIP; SELF RESETTING FUSE,1.1A HOLD,2.2A TRIP AT 20 DEG C,30V MAX,SAFETY CONTROLLED

FUSE; 2.0A,125V,FAST BLOW,0.1 X 0.1 X 0.24,UL REG,CSA CERT,SAFETY CONTROLLED

SWITCH,DIP; SPST,SLIDE,DIP,4 POSITION,GOLD OVER NICKEL,0.4VA @ 20VDC,0.05 HALF PITCH;TD04H0SK1,SMD

BATTERY,DRY; 3.0V,LITHIUM MANGANESE DIOXIDE,210MAH,20 X 3.22MM COIN CELL WITH SOLDER TABS,CR2032-1HF1

CONN, HDR; SMD,MALE,RTANG,1 X 10,0.049 CTR

5–8 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

Figure 5-3: Main board replaceable components

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–9

Replaceable Parts

Table 5-4: Repl

Fig. & index number

5-4

-1 012-1688-00 1

-2 200-4804-00 1

-3 131-0422-00 1

aceable parts list (See Figure 5-4.)

Tektronix part number

Serial no. effective

Serial no. discont’d Qty Name & description

ANALOG AUDIO BREAKOUT CABLE Note: Optional Accessory

CABLE ASSEMBLY; ANALOG/AUDIO BREAKOUT

COVER; SHIELD,ELEC CONN,37 POS DSUB,ZINC

CONN,DSUB; SLDR CUP/PNL,;MALE,STR,37 POS,0.112 CTR,0.186 H X 0.126 TAIL,0.125 DIA THRU MTG

Figure 5-4: Analog audio breakout cable assembly

5–10 WFM8200 and WFM8300 Waveform Monitors Service Manual

Replaceable Parts

Table 5-5: Acce

Fig. & index number

Tektronix par number

071-2639-xx

(Subpart of 020-3005-xx)

077-0253-xx

077-0264-xx

077-0259-XX

077-0391-XX

077-0261-xx

063-4217-xx

(Subpart of 020-3005-xx)

See Description

WFM7F02

200-4716-00

WFM7F05

012-1688-00

ssories

Serial

no. effective

Serial no. discont’d Qty Name & descrip tion

Standard Accessories

* MANUAL,TECH; USER, ENGLISH

* MANUAL,TECH; RELEASE NOTES

* MANUAL,TECH; SPECIFICATIONS AND PERFORMANCE VERIFICATION

* MANUAL,TECH; SYSTEM INTEGRATION INSTRUCTIONS

* MANUAL,TECH; MANAGEMENT INFORMATION DATABASE (MIB)

PRINTED MANUAL,TECH; SAFETY AND INSTALLATION INSTRUCTIONS, ENGLISH, JAPANESE, SIMPLIFIED CHINESE

TECHNICAL REFERENCE

PROGRAMMER

DOCUMENTATION; PRODUCT CD

CABLE ASSY, POWER:

Option Country P/N

A2 UK 161-0066-10

A6 JAPAN 161-0298-00

A10

N. AMERICA

UNIV EURO

AUSTRALIA

USA 240 V

SWITZERLAND

CHINA

061-0066-00

161-0066-09

161-0066-13

161-0066-12

161-0154-00

161-0304-00

Optional Accessories

CABINET; PORTABLE CABINET WITH HANDLE,FEET,TILT BAIL AND FRONT PAN EL CO VER

COVER,FRONT; PROTECTIVE,PC/ABS FR110,TV GRAY

RACK ADAPTER; DUAL SIDE BY SIDE

CABLE ASSEMBLY; ANALOG/AUDIO BREAKOUT

WFM8200 and WFM8300 Waveform Monitors Service Manual 5–11

Tektronix WFM8200, WFM8300 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual