Tektronix WFM700 Service Manual

Service Manual

WFM700 Series Waveform Monitors

071-0915-04

This document applies to firmware version 1.3.0 and above.

Warning

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

www.tektronix.com

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

Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Warranty 2

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

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products re turned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or c onnection to incompatible equipment; c) to repair any damage or malfunc tion caused by the use of non-Tektronix supplies; or d) to service a product that ha s 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 W ARRANTY 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 MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENT AL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

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

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

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

Manual Content xi.................................................

Manual Conventions xi..............................................

Related User Documents xii..........................................

Related Reference Documents xiii......................................

Contacting Tektronix xiv.............................................

Theory of Operation

Operating Conditions 1--1.............................................

Overview 1--1.......................................................

Individual Module Descriptions 1--2.....................................

Diagrams 1--7.......................................................

Performance Verification

Prerequisites 2--1....................................................

Test Equipment Required 2--2..........................................

Performance Verification Conditions 2--4.................................

Self Tests 2--4.......................................................

Functional Tests 2--6.................................................

Performance Tests 2--9................................................

WFM700 Audio (Option DG) Performance Verification Procedure 2--50.........

WFM700/WFM7M Input Module Test Record 2--57.................

WFM700/WFM7A Input Module Test Record 2--63..................

WFM700/WFM7HD Input Module Test Record 2--67................

WFM700 Audio Module (Option DG) Test Record 2--71..............

Adjustment Procedures

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

Manual Adjustment Procedures 3--3.....................................

Instrument Driven Procedures 3--11......................................

WFM700 Series Waveform Monitors S ervice Manual

Table of Contents

Maintenance

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

Firmware Upgrades 4--1..............................................

Preventing ESD 4--2.................................................

Inspection and Cleaning 4--3...........................................

Removal and Installation Procedures 4--7.........................

Cabinet 4--8........................................................

Chassis Cover 4--9...................................................

Plug-In Modules 4--11.................................................

Power Supply 4--18...................................................

Front End Assembly 4--19..............................................

Fans 4--22...........................................................

Fan Assembly 4--23...................................................

Main Circuit Board 4--25...............................................

Troubleshooting 4--27...........................................

Check for Problems 4--27..............................................

Diagnostics 4--30.....................................................

LED Fault Codes 4--32................................................

Troubleshooting Trees 4--33............................................

Repackaging Instructions 4--41...................................

Replaceable Parts

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

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

Module Servicing 5--2................................................

Using the Replaceable Parts List 5--2....................................

WFM700 Series Waveform Monitors S ervice Manual

List of Figures

Table of Contents

Figure 1--1: WFM700 signal flow block diagram 1--8................

Figure 1--2: Control flow block diagram 1--9.......................

Figure 2--1: Signal data paths performance verification screen one 2--12.

Figure 2--2: Signal data p ath s performance verification screen two 2--12.

Figure 2--3: Serial video output level performance verification

screen 2--17................................................

Figure 2--4: SD PIX MON output level performance screen 2--18.......

Figure 2--5: HD pix G/Y video output level performance screen 2--20...

Figure 2--6: HD pix B/Pb and R/Pr video output level performance

screen 2--21................................................

Figure 2--7: SD pix video output level performance screen 2--22........

Figure 2--8: HD GBR frequency response performance screen 2--26.....

Figure 2--9: SD GBR frequency response performance screen 2--28.....

Figure 2--10: Eye vertical scale reference level screen 2--30............

Figure 2--11: Eye vertical scale performance screen 2--31..............

Figure2--12:Eyetimebasejitterperformancescreen 2--35............

Figure 2--13: Eye clock recovery bandwidth performance screen 2--37..

Figure 2--14: Eye clock recovery bandwidth performance screen 2--42..

Figure 2--15: Jitter gain check performance screen 2--45..............

Figure 2--16: Eye pattern display signal bandwidth performance

screen 2--47................................................

Figure 3--1: Adjustment locations on the video module 3--3...........

Figure 3--2: Serial out amplitude adjustment screen 3--5.............

Figure 3--3: SD PIX monitor adjustment screen 3--6.................

Figure 3--4: SD PIX G/Y output adjustment screen 3--8..............

Figure 3--5: SD PIX B/Pb and R/Pr output adjustment screen 3--8.....

Figure 3--6: HD PIX G/Y output adjustment screen 3--10.............

Figure 3--7: HD PIX B/Pb and PIX R/Pr output adjustment screen 3--10

Figure 3--8: Calibration routines menu 3--11........................

Figure 3--9: Eye vertical scale reference amplitude screen 3--13........

Figure 3--10: Eye vertical scale adjustment screen 3--14...............

Figure 3--11: SD Jitter gain adjustment screen 3--16..................

Figure 3--12: HD Jitter gain adjustment screen 3--18.................

WFM700 Series Waveform Monitors S ervice Manual

iii

Table of Contents

Figure 3--13: Eye loop BW one UI adjustment screen 3--18............

Figure 3--14: Jitter HPF adjustment screen 3--23....................

Figure 4--1: Cabinet attaching screws 4--8.........................

Figure 4--2: WFM700 chassis cover, showing screws to loosen

and remove 4--10............................................

Figure 4--3: Plug-in module retaining screws 4--11...................

Figure 4--4: Grounding clip between two video modules 4--12..........

Figure 4--5: Removing a plug-in module 4--13.......................

Figure 4--6: WFM700 rear panel showing slot numbers 4--15..........

Figure 4--7: Inserting a module into the chassis 4-- 16.................

Figure 4--8: Installing the grounding clip between two video

modules 4--17...............................................

Figure 4--9: Front panel assembly 4--20............................

Figure 4--10: Keyboard access 4--21...............................

Figure 4--11: Fan assembly mounting 4--24.........................

Figure 4--12: Main circuit board securing screws 4--25................

Figure 4--13: Primary troubleshooting procedure 4--34...............

Figure 4--14: LED fault troubleshooting tree 1 4--35..................

Figure 4--15: LED fault troubleshooting tree 2 4--36..................

Figure 4--16: Blank screen troubleshooting tree 4--37.................

Figure 4--17: Front panel buttons and touch panel troubleshooting

tree 4--38..................................................

Figure 4--18: Diagnostics errors troubleshooting tree 4--39............

Figure 4--19: Audio (Option DG) diagnostics errors troubleshooting

tree 4--40..................................................

Figure 5--1: WFM700 replaceable circuit boards and cables 5--8......

Figure 5--2: WFM700 power supply assembly and rear panel

(B010999 and below) 5--10....................................

Figure 5--3: WFM700 replaceable chassis parts 5--13.................

Figure 5--4: WFM700 Audio board option DG 5--15..................

WFM700 Series Waveform Monitors S ervice Manual

List of Tables

Table of Contents

Table 2--1: T est equipment for performance verification 2--2.........

Table 3--1: Test equipment for adjustment procedures 3--2...........

Table 4--1: External inspection check list 4--4......................

Table 4--2: Internal inspection check list 4--5......................

Table 4--3: Tools required for module removal 4--7.................

Table 4--4: Failure symptoms and possible causes 4--27...............

Table 4--5: LED fault codes 4--32.................................

WFM700 Series Waveform Monitors S ervice Manual

Table of Contents

WFM700 Series Waveform Monitors S ervice Manual

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

To Avoid Fire or

Personal Injury

Use Proper Power Cord. Use only the power cord specified for this product and

certified for the country of use.

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. T o avoid fire or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product.

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

Replace Batteries Properly. Replace batteries only with the proper type and rating specified.

Do Not Operate Without Covers. Do not operate this product with covers or panels removed.

Use Proper Fuse. Use only the fuse type and rating specified for this product.

Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present.

Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

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.

WFM700 Series Waveform Monitors S ervice Manual

vii

General Safety Summary

Symbols and Terms

Terms in this Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the marking.

WARNING indicates an injury hazard not immediately accessible as you read the marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. The following symbols may appear on the product:

CAUTION

Refer to Manual

WARNING

High Voltage

Protective Ground

(Earth) Terminal

viii

WFM700 Series Waveform Monitors S ervice Manual

Service Safety Summary

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

procedures.

Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.

Disconnect Power. To avoid electric shock, switch off the instrument power, then disconnect the power cord from the mains power.

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

To avoid electric shock, do not touch exposed connections.

WFM700 Series Waveform Monitors S ervice Manual

Service Safety Summary

WFM700 Series Waveform Monitors S ervice Manual

Preface

Manual Content

Manual Conventions

This is the service manual for the WFM700HD, WFM700A, and WFM700M multi-format, multi-standard waveform monitors.

Read this preface to learn how this manual is structured, what conventions it uses, and where you can find other i nformation related to servicing this product.

This manual contains only information related to servicing the WFM700 instrument. For information related to installing and operating the instrument or for a list of instrument specifications, refer to the appropriate user document as described in Related User Documents on the following page.

Be sure to read the introductions to all procedures. These introductions provide important information needed to do the service correctly, safely, and efficiently.

Module

Plug-in Module

Replaceable Parts

Safety

This manual uses certain conventions that you should become familiar with before attempting service.

The term module refers to a collection of items that are replaceable as a unit. A module may contain electrical and mechanical assemblies, circuit boards, and interconnecting cables.

The term Plug-in Module refers to the units that plug into the Main board.

This manual refers to any field-replaceable assembly or mechanical part by its name or generically as a replaceable part. In general, a replaceable part is any circuit board or assembly that is listed in t he Replaceable Parts section.

Symbols and terms related to safety appear in the General Safety Summary found at the beginning of this manual.

Be sure to read both the General Safety Summary and Service Safety Summary before performing any service to this instrument.

WFM700 Series Waveform Monitors S ervice Manual

Preface

Contacting Tektronix

Phone 1-800-833-9200*

Address Tektronix, Inc.

Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

Web site www.tektronix.com

Sales support 1-800-833-9200, select option 1*

Service support 1-800-833-9200, select option 2*

Technical support www.tektronix.com/support

1-800-833-9200, select option 3*

6:00 a.m. -- 5:00 p.m. Pacific Standard Time

* This phone number is toll free in North America. After office hours, please leave a voice mail

message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix Web site for a list of offices.

xiv

WFM700 Series Waveform Monitors S ervice Manual

Theory of Operation

This chapter contains a module-level description of the WFM700 instrument. Two block diagrams are provided to aid the descriptions. Figure 1--1 on page 1--8 shows the signal flow of the instrument and Figure 1-- 2 on page 1 --9 shows the control flow.

Operating Conditions

The electrical specifications of the instrument are listed in the WFM700 Series Technical Reference document and apply over an ambient temperature range of

+0 _Cto+40_C. The rated accuracies are valid when the instrument is calibrated in an ambient temperature range of +20 _Cto+30_C.

Overview

The WFM700 accepts either SD (Standard Definition) or HD (High Definition) serial video data at the input connectors of an installed Input Module (in either slots 1 or 2 of the WFM700 mainframe). The applied video signal i s sent to SD and HD equalizers (to compensate for signal degradation due to cable loss) and to the eye sampler. The compensated serial video signal is converted to parallel video and a clock signal is recovered. The parallel signal is further processed to extract the embedded audio signal, detect the video format, and generate an RGB Analog video signal. The embedded audio is encoded into AES signals that are sent to the optional Audio module by way of the audio bus.

The parallel video signal is sent to the Real-time Display module on a digital bus, 10 bits for SD video and 20 bits for HD video. The RGB video is sent to the Reference module on the analog bus for component video output at the P IX G/Y, PIX B/Pb, and PIX R/Pr connectors and the VGA PIX MON connector.

The Real-Time Display module accepts the parallel video signal from the selected Input Module. The video signal is processed to display the information in various forms on the raster display. The output from the Real-Time Display module is sent to the Main Interface board via LVDS pairs. There the video signal is added with text and graticule information from the VGA controller. The combined video signal is sent to the LCD and the EXT VGA output connector.

Timing is accomplished by using the clock and TRS (timing reference signal) from the video input signal. A clock and and TRS (from an analog video signal) can be input via the External Reference module using the AUX IN connector.

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1- 1

Theory of Operation

Communication between modules and the CPU is accomplished via the Main Interface board using two main control busses (PCI and Serial) and two RS232 connections. The Input Modules and Real-Time Display module use the PCI bus. The Reference Module uses the Serial bus. The Front Panel uses RS232 to communicate with the CPU which interprets the information and sends the commands to the appropriate modules. The CPU also communicates with the Environmental Controller (on the Main Interface board) via an RS232 connection.

Power for the WFM700 is provided by the power supply module. The power supply module accepts line input voltages within the range of 100 VAC to 240 VAC. Anytime line input voltage is supplied to the power supply module, a +5 V housekeeping supply is activated, providing power to the front panel ON/STBY switch and to the Environmental Controller (EC) on the Main Interface board. Pressing the ON/STBY button activates the main power supply (within the Power Supply module), providing power to the entire instrument and modules.

Once the power supply stabilizes, the CPU module polls all slots (via the PCI bus and Serial Control bus) to determine the installed modules.

Individual Module Descriptions

The following descriptions provide more detail about the individual functions of each instrument board or module.

Front Panel Processor

LCD and Backlight

The Front Panel Processor board sends all front panel actions (including the touch screen) to the CP U board via the RS232 Bus.

The LCD panel displays the video output from the Main Interface board via the VGA Mux. The Backlight board supplies the high voltage necessary to drive the backlight for the LCD panel.

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WFM700 Series Waveform Monitors S ervice Manual

Theory of Operation

Input Module

The Input module is comprised of two circuit boards, a Mezzanine board and an Input board.

The Mezzanine board provides two terminating serial inputs, each supporting either SD (SMPTE 259M) or HD (SMPTE 292M) SDI signals. A mux selects between the two inputs and sends the signal to an eye pattern sampler block and a serial receiver block (equalizing the signal). The eye pattern sampler block implements a 3 GHz equivalent-time sampler to allow viewing the input eye pattern. The equalized SD or HD signal and the eye pattern data samples are sent to the Input board.

On the Input board, an SD or HD serial-to-parallel block provides clock recovery and serial-to-parallel conversion of the selected input. An FPGA block multiplexes between the eye sampler output and serial receiver block output (depending on instrument mode), implements any needed waveform conditioning (such as ancillary data extraction), and outputs the parallel signal (20 bits for HD mode, 10 bits for SD mode) to the Real-Time Display (RTD) board. The FPGA block also extracts up to eight channels of audio signal which is put on the audio bus for future use.

A DAC block creates a picture monitor signal which is output through the VGA PIX MON connector and the component video connectors (PIX G/Y, PIX B/Pb, PIX R/Pr) on the Reference Module.

External Connectors

H INPUT A. Digital input for signal to be monitored. For WFM700HD, this

can only accept 1.485 Gb/s and 1.4835 Gb/s High Definition serial video. For the WFM700A and WFM700M, this input can accept HD and 270 Mb/s Standard Definition video. This is a 75 8 terminating input.

H INPUT B. Digital input for signal to be monitored. For WFM700HD, this

H SD PIX MON. This output is a copy of the PIX G/Y, B/Pb, R/Pr pix mon

output, but in reclocked SD serial digital format. It is operational only for SD input formats.

H SERIAL OUT. Provides an equalized and buffered version of the selected

signal input (Video Input A or B).

H JITTER OUT. (WFM700M only) Provides a 75 8 output signal from the

jitter demodulator. This signal is only valid when the instrument is in Jitter mode. Any signal present on this output at other times is not a calibrated jitter signal.

WFM700 Series Waveform Monitors S ervice Manual

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Theory of Operation

Reference Module

The External Reference module provides synchronization for the WFM700 instrument, allowing you to sync the display to an analog video input. The Reference Module accepts PAL and NTSC signals with bi-level sync (SD) or tri-level sync (HD) input, so that timing of the SDI input signals can be compared to the analog sync reference. The External Reference module automatically detects the input standard. The Reference Board timing signals are available to both the Input Module and Real-Time-Display Module.

The sync signal from the External Reference module is embedded in a data stream of 27 MHz (for SD video), and 74.25 MHz or 74.1758 MHz (for HD video). This data stream is called the TR S signal, and contains H, V, and F information. The External Reference module acts as a data hub or router for TRS (timing reference signal) signals to and from the input modules (slots 0 or 1) and the Real-Time Display module.

External Connectors

H REF IN LOOP-THROUGH. Compensated for 75 8 impedance; requires

proper termination at one end of the loop-through connector or at the receiver in a monitored system. Provides for connection of an external synchronization signal such as black burst or composite video.

H AUX IN. Future capability.

H VGA PIX MON. A copy of the PIX G/Y, B/Pb, R/Pr pix mon outputs. This

allows using an inexpensive VGA monitor for non-critical HD applications. Most computer monitors will not lock to 50 Hz vertical rates or to Standard Definition line rates, so this may not work in all applications.

H PIX G/Y, B /Pb, R/Pr. Provides three 75 8 component signal outputs to drive

a component picture monitor. You can set the output format to YPbPr or RGB.

H AUX OUT 1 / AUX OUT 2. Future capability.

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WFM700 Series Waveform Monitors S ervice Manual

Theory of Operation

Main Interface Board

The Main Interface board provides signal paths and communication paths between all modules.

H PCI Bus and Serial Control Bus are used for control and data transfer. Both

go to all slots. The PCI Bus is typically used for modules requiring high-speed performance and communication between modules without the use of the CPU board. The Serial Control Bus is used for modules requiring less control and speed.

H The Timing Bus is used to distribute the TRS signal to the Input Modules

and the RTD board.

H The Audio Bus routes the digital audio signal (extracted from the video

serial input) to the module slots for use by future modules.

H The Video Bus routes the parallel video signal (with clock and sync signals)

to the RTD slot from the two Input slots.

The Main Interface board provides power distribution, contains thermal sensors, and contains the Environmental Controller (EC). The EC monitors the front panel ON/STBY switch to control the main power supply (in the Power Supply module) and monitors all low voltage power sensors for inaccurate voltage levels.

The VGA Controller routes the video signal to both the LCD and the EXT VGA output. This output can be used to drive an external monitor to produce the same display as seen on the LCD.

External Connectors

H EXT VGA. Provides an exact copy of the LCD screen to drive an external

monitor.

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Theory of Operation

CPU Board

Real Time Display (RTD)

Board

The CPU board receives commands from the Front Panel (buttons, knobs, and touch screen) via RS232 connections, then transmits instructions to the other modules via the PCI bus and Serial bus. The CPU also defines the operation of the video channels (but is not in the video signal path). All text and graticule information for the LCD panel is generated by the CPU board and sent to the LCD via the VGA Mux on the Main Interface board.

External Connectors

H REMOTE. 9 pin subminiature D-type connector used as a Ground Closure

interface for remote control.

H USB. This connector is not used and was removed for CPU board versions

671-4528-04 (SN B019999 and below) and 671-5751-03 (SN B024089 and above).

H ETHERNET. (10/100 Base T). 10/100 Mbit/sec Ethernet interface. Used for

downloading firmware upgrades.

Real Time Display board receives the parallel digital video signal from the Input module and processes the video data to display the information in various forms on the raster display. The different forms of display consist of sweeps (overlay or parade), x y (vectors, lighting, diamond, ect.), and picture monitor. The RTD board handles either standard definition (SD) or high definition (HD) data. Only one channel is processed at a time.

The RTD is divided into two logical sections. The first section, the DSP engine, performs signal processing and routing operations to create standard waveform monitor displays. The second section, the rasterizer engine, performs attack and decay operations to simulate an analog CRT phosphor screen. The rasterizer also has the ability to partition multiple displays into separate windows.

The RTD accepts a 10 or 20-bit data stream (SD or HD) from either of two input slots. A polyphase interpolator increases the data rate and fills gaps in the data. The higher data rate allows the rasterizer to plot more pixels per second to improve the display quality. The Measurement Processing block produces various waveform displays such as Parade, Vector, and Diamond and also performs gain, offsetting, and filtering operations. It outputs pairs of numbers used by the Rasterizer and its companion memory to build a display map. Memory values are incremented or decremented depending on these number pairs, varying pixel display brightness according to frequency of occurrence, similar to a phosphor screen. A Picture Mode Processing block allows a raster picture display of the input signal, suitably adjusted to the 640x480 VGA display format. The Rasterizer output is applied to the color LCD display after it is combined with any text and graticules from the VGA controller.

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Theory of Operation

Audio Module (Option DG)

The Audio board receives serial audio data in AES/EBU format from the selected Input module, or from the AES I/O connectors if they are configured as inputs. When configured as outputs, the AES I/O connectors supply AES/EBU serial audio de-embedded from the selected video input. The selection of extracted embedded audio groups takes place within the Input module.

AES/EBU signals from the selected source are processed to extract channel status, validity, and parity bits. The audio data is examined for clip and mute conditions, and word length (active bits) and peak values are determined. Audio data is up-sampled to 192 kb/sec for further processing.

DSP processors compute audio level according to the configured level meter ballistic. The CPU periodically polls the Audio Module to get the current audio levels, and then draws the corresponding bars via the VGA controller. Other data concerning audio (clip, mute, channel status etc) is communicated in a similar fashion from the Audio Module to the CPU for display, data logging, or alarm activation.

A DSP processor creates a Lissajous image that is periodically transferred directly to the VGA controller via the PCI bus.

External Connectors

H AES 1-2 I/O / AES 3-4 I/O / AES 5-6 I/O / AES 7-8 I/O. Four AES/EBU

format, AES-3id compatible inputs or outputs. As outputs, they supply serial audio de-embedded from the selected video input. As inputs, they can be selected for complete processing and display in place of embedded audio.

Power Supply Module

Diagrams

The power supply module accepts line input voltages within the range of 100 VAC t o 240 VAC. Anytime line input voltage is supplied to the power supply module, a +5 V housekeeping supply is activated, providing power to the front panel ON/STBY switch and to the Environmental Controller (EC) on the Main Interface board. The EC continuously polls the front panel ON/STBY switch. Pressing the front panel ON/STBY button instructs the EC to activate a relay in the power supply module, activating the Main Power supply. The Main Power supply provides +5 V, +3.3 V, +12 V and --12 V to the circuits and other modules via the Main Interface board. The EC monitors all power supply voltages and shuts down the Main Power supply if a problem is detected.

Figure 1--1 on page 1-- 8 is a block diagram of the signal flow of the instrument. Figure 1--2 on page 1--9 is a block diagram of the control flow.

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1- 7

Theory of Operation

HD/SD

Serial In

AES

I/O

Ref In Loop

Through

VGA PIX Mon

PIX G/Y

PIX B/Pb

PIX R/Pr

Mezzanine

Board

I/O

Buffers

I/O

Buffers

Sampler

Eye

CPU

Board

Second

Input slot

Sync

Stripper

PLL Osc

FPGA for

Full-Speed Data

Massaging

HD SDClk

Serial to Parallel

Conversion

Generation

Input Module

Reference Module

TRS

DAC

HD/SD

Input

Board

Audio

Analog Bus

Main Interface Board

VGA

Controller

20 Bits at 75 MHz

plus clock and sync

Aux Out 1 Aux Out 2

Selector

Measurement

Processing

Picture Mode

Processing

Polyphase

Interpolator

Power Supply

Module

Figure 1- 1: WFM700 signal flow block diagram

1- 8

Audio Bus

RTD Module

Rasterizer

Fast Static

Memory

Timing Bus

Front panel controls

and touch screen

VGA MUX

output

WFM700 Series Waveform Monitors S ervice Manual

VGA

LCD

Panel

Theory of Operation

CPU Board

Input Module

Mezzanine Board HD/SD Input Board

RAM

Control

I/O

Buffers

PLD

PCI

Interface

Second Input slot

DSP 0

Bars, Control

Hardware Processing

AES Receivers, Rate Converters,

FPGA

FPGA for Full-Speed

Data Massaging

Audio Module

DSP 1

Bars, Lissajous

PCI

Interface

Serial Bus

Multiplexer

Main Interface Board

PCI Bus

Audio Bus

Serial Control Bus

Control

TRS Generation and control

Measurement

Processing

Logic Devices

Polyphase

Interpolator

Housekeeping Supply

Power Relay

Rasterizer

Recursive and

Pix Processing

Main Power

Supply

Figure 1- 2: Control flow block diagram

Reference Module

Fast Static

Memory

SDRAM

Power Supply Module

RTD Module

PCI

Interface

RS232

On-Off

RS232

Front panel controls

and touch screen

Environmental

Controller “EC”

VGA

Controller

VGA MUX

LCD

Panel

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Theory of Operation

1- 10

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

This section contains three procedures to verify the operation of all models of the WFM700 waveform monitor. This includes the Video modules (WFM7HD, WFM7A, and WFM7M) and the Audio module (WFM7DG). Please disregard checks that do not apply to the module type you are testing.

H Self Tests use the internal diagnostic routines to verify proper power-up,

modules recognized and operating, and signal paths. No external equipment is required for these tests.

H Functional Tests verify that the waveform monitor and its installed modules

are operating correctly.

H Performance Tests verify that the waveform monitor and all its installed

modules meet the performance requirements listed in the Specifications section of the WFM700 Series Technical Reference document. This section also includes checks for operating parameters that are specified as typical but are not guaranteed. Firmware version 1.3 or above is required to perform all performance tests.

H Test Records are provided at the end of this chapter to record the results of

each performance test that checks a warranted characteristic.

Prerequisites

Before doing the performance verification procedures, note the following prerequisites:

H Personnel — Users should be familiar with the operation of all test

equipment and the WFM700.

H Two V ideo Modules — The verification procedures must be performed on

both video modules if two are installed in the WFM700. Complete the entire performance procedures on one video module at a time.

H Audio Module — The verification procedure for the Option DG Audio

module must be performed if the module is installed in the WFM700.

H Warm-up Period — Turn on the WFM700 and allow a 20-minute warm-up

period in an environment that meets the operating range specifications for temperature and humidity. Verification of warranted characteristics done before the operating temperature has stabilized might cause errors.

Also turn on other required test equipment and allow them to warm up for their recommended time periods.

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Performance Verification

Test Equipment Required

Table 2--1 lists the test equipment required to perform all of the performance verification procedures. Some equipment may not be necessary for your waveform monitor. The procedures describe the input signal characteristics necessary to perform the test. Where external test equipment is required, refer to your test equipment’s user manual for instructions to obtain the correct signal.

Table 2- 1: Test equipment for performance verification

Test equipment Requirements Example

HD serial digital video test signal generator

SD serial digital video test signal generator

Analog video test signal generator

1080i 59.94 100% color bars 1080i 59.94 10-bit shallow ramp matrix 1080i 59.94 0% flat field 1080i 59.94 75% SMPTE color bars 1080i 59.94 100/0/100/0 color bars 1080i 59.94 100/0/75/0 color bars 1080i 50 100% color bars 1080i 60 100% color bars 720p 59.94 100% color bars 1080i 59.94 100% sweep 1 -- 30 MHz 1080i 59.94 100% flat field 1080i 59.94 20 -- 30 MHz multiburst

525-format 100% color bars 525-format 10-bit shallow ramp matrix 525-format 0% flat field 525-format 75% color bars 525-format 100% flat field 525 line 60% multiburst

PAL black 1080i 50 black 1080i 60 black 720p 59.94 black

Tektronix TG2000 with HDVG1 module

Tektronix TG2000 with DVG1 module

Tektronix TG2000 with AVG1 module

WFM700

Opt.

A HD M

D D D D

D D D

RF generator 20 MHz to 2.5 GHz

<1 dB level flatness 10 Hz to 100 kHz phase modulation with < 3% setting error

Sinewave generator Capable of 0.8 V

Digital audio generator/ analyzer

Test oscilloscope 2 GHz vertical bandwidth Tektronix TDS794 D D D D

35 kHz to 96 kHz sample rate range, jitter measurement per AES--3 (1997)

at6MHzintoa508 load Rohde & Schwarz SMT03 Opt

p-p

2- 2

Rohde & Schwarz SMT03 Opt SM--B2

50 8 N-to-BNC adapter

SM--B2

Rohde & Schwarz UPL06 Opt B22, B29

D D D

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Performance Verification

Table 2- 1: Test equipment for performance verification (cont.)

WFM700

Test equipment

RequirementsTest equipment

Requirements

Example

VGA monitor with cable

Autotransformer Output range 90 V to 264 V D D D

75 8 coaxial cables (2 required)

General purpose digital video Male-to-male BNC connectors

Belden 8281 D D D D

36 inches long

D D D

Opt.

MHDA

75 8 coaxial cable (1 required)

Low loss digital video Male-to-male BNC connectors

Belden 1695A D D D

18 inches long

50 8 coaxial cables (2 required)

Precision

Male-to-male BNC connectors 36 inches long

Tektronix part number 012-0482-00

D D D D

1.5% impedance and attenuation accuracy Tektronix AMT75 D D D

75 8-to-50 8 adapter (for test oscilloscope input)

Wideband 50 8-to-75 8 matching pad

90 meters and 325 meters of 75 8 cable

0to2.5GHz,

Rohde & Schwarz RAM D

N connectors, 75 8 N-to-BNC adapter

Low loss cable. Cable simulators can be used

Belden 8281 D D D

as substitutes as follows:

SD Cable Simulator Faraday SC75A800 B--G Cable

D D

Clone

HD Cable Simulator Faraday FFC Kit D D D

Return loss bridge 75 8 test port

50 8 input and output ports

Wide Band Engineering A57TUC with male 75 8 BNC

D D D D

test port

Calculator Logarithmic function D D D D

You may need additional cables and adapters, depending on the actual test equipment you use.

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Performance Verification

Performance Verification Conditions

NOTE. Menu selections in the WFM700 Waveform Monitor differ between firmware versions. The Performance Verification procedures assume you have the latest firmware version installed in your instrument.

The following conditions must be met prior to doing these procedures:

1. The WFM700 Waveform Monitor must have been operating continuously for twenty (20) minutes in an environment that meets the operating range specifications for temperature and humidity.

2. Connect the WFM700 Waveform Monitor and the test equipment to the same AC power circuit or to a common power strip if you are unsure of the AC power circuit distribution.

Self Tests

This procedure uses i nternal routines to verify that the waveform monitor functions and passes its internal self tests. No test equipment or hookups are required.

1. Press the PRESET button.

2. Touch the -- m o r e -- soft key, then touch the Restore Factory soft key.

NOTE. Restoring factory settings overrides the current instrument state but does not alter calibration or presets.

3. Press the CONFIG front panel button.

4. Touch System and then Diagnostics.

5. Touch Diagnostics, then View Diagnostic Log.

6. Touch **Erase** NVRAM Log to clear the log file.

7. Touch Back to Diags Menu.

8. Touch Run Full Powerup Diagnostics.

9. Touch Back to Diags Menu.

2- 4

10. Touch View Diagnostics Log.

11. CHECK the diagnostics log pages to verify that there are no red FAIL

messages.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

12. Touch **Erase** NVRAM Log to clear the log file.

13. Touch Back to Diags Menu.

14. Touch Run Internal Digital Path Diagnostics.

15. Read the screen text, and then touch Continue to acknowledge that a reboot

will be required. The diagnostic test will run.

16. CHECK for the following display properties:

a. Verify that four ramp patterns (bars) appear on the display as gray, blue,

green, and red.

b. Verify that each ramp pattern has brightness steps approximately every

1/16 inch.

c. Verify there are no color bands in the gray ramp display.

17. Press the flashing SELECT button to return to the diagnostics menu.

18. Touch View Diagnostics Log.

19. CHECK the diagnostics log pages to verify that there are no red FAIL

messages.

20. Touch **Erase** NVRAM Log to clear the log file.

STOP. Unless the WFM700 has the optional Audio module (Option DG), skip down to step 28 to complete this procedure.

21. Touch Back to Diags Menu.

22. Touch Run Audio Path Diagnostics.

23. Read the screen text, and then touch Continue to acknowledge that a reboot

will be required. The diagnostic test will run.

24. Touch the Back to Diags Menu.

25. Touch View Diagnostics Log.

26. CHECK the diagnostics log pages to verify that there are no red FAIL

messages.

27. Touch **Erase** NVRAM Log to clear the log file.

28. Cycle the power to reboot the WFM700.

29. Press the PRESET button and touch the –more-- soft key.

30. Touch the Restore Factory soft key.

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Performance Verification

Functional Tests

These functional tests provide tests to check basic functionality of the inputs and general operation prior to starting the Performance Tests. A more exhaustive check of all functions and buttons is provided in the Technical Reference.

Preliminary Setup and

Test

The Preliminary Setup performs the following tasks:

H Sets the waveform monitor to a known state

H Provides instructions for test equipment setup used throughout the

Functional Tests

H Provides a preliminary check of the video input path and display

1. Press the PRESET button.

2. Touch the -- m o r e -- soft key, then touch the Restore Factory soft key.

Restoring factory settings overrides the current instrument state but does not alter calibration or presets.

3. Connect a serial digital output from the HD video generator to INPUT A using a 75 8 cable.

4. Set the HD video generator for a 1080i 59.94 100% color bars signal.

5. Connect a serial digital output from the SD video generator to INPUT B

using a 75 8 cable.

6. Set the SD video generator for a 525-format 100% color bars signal.

7. Press the INPUT button and touch the Input A soft key.

HD Input and Embedded

Audio Detection

2- 6

8. CHECK that an HD color bar signal is displayed.

9. Press the DISPLAY button. Adjust the Trace Settings, Graticule Settings,

and Readouts & Backlight settings for best viewing.

This procedure checks the input detection and audio disembedding data paths for high definition video.

1. Press the WFM button.

2. Press the INPUT button and touch the Input A soft key.

3. Disable or disconnect the HD video generator signal to INPUT A.

4. CHECK that the red IInput UnlockedI message is displayed.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

5. Enable or reconnect the HD video generator signal to INPUT A.

6. CHECK that the red IInput UnlockedI message is gone.

7. Set the HD video generator for 2 groups of embedded audio, starting with

group 1.

8. Press the STATUS button.

9. Touch the Display soft key.

10. Touch the Session soft key and then touch the Done soft key.

11. Option DG only: Touch the Video Session soft key if necessary to select

Video Session.

12. CHECK that the embedded audio status reads as follows:

Embedded Audio: PPPP PPPP ---- ----

SD Input and Embedded

Audio Detection (WFM7A,

WFM7M only)

This procedure checks the input detection and audio disembedding data paths for standard definition video.

1. Press the WFM button.

2. Press the INPUT button and touch the Input B soft key.

3. Disable or disconnect the SD video generator signal to INPUT B.

4. CHECK that the red IInput UnlockedI message is displayed.

5. Enable or reconnect the SD video generator signal to INPUT B.

6. CHECK that the red IInput UnlockedI message is gone.

7. Set the SD video generator for 2 groups of embedded audio, starting with

group 1.

8. Press the STATUS button.

9. Touch the Display soft key.

10. Touch the Session soft key and then touch the Done soft key.

11. Option DG only: Touch the Video Session soft key if necessary to select

Video Session.

12. CHECK that the embedded audio status reads as follows:

Embedded Audio: PPPP PPPP ---- ----

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Performance Verification

VGA Outputs

This procedure checks VGA PIX MON and EXT VGA outputs.

1. Connect a VGA monitor to the VGA PIX MON output.

2. Press the INPUT button and touch the Input A soft key.

3. Press the CONFIG button.

4. Touch the Video Inputs/Outputs soft key, then Next Menu.

5. Touch the Output Active for HD soft key.

6. Touch the RGB soft key.

7. CHECK that color bars are correctly displayed on the VGA monitor.

NOTE. Some VGA monitors do not synchronize correctly to color bars with tri-level sync. If the picture is not locked, select a flat field signal from the generator, then switch back to color bars.

8. Move the VGA monitor cable from the VGA PIX MON output to the EXT VGA output.

9. CHECK that the external VGA display matches the display on the LCD.

10. Disconnect the test setup.

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Performance Tests

Performance Verification

The Performance Tests verify that the WFM700 waveform monitor (all models) meets the warranted characteristics listed in the Specifications section of the WFM700 Series T echnical Reference document. Characteristics with typical specifications (not warranted) are also checked.

NOTE. WFM700 firmware version 1.3 or above is required to perform all tests in this section. Verify the firmw are version and update if needed.

Power Source Ra nge

This test checks for stable operation over a varied AC input range.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the AC power cord from the WFM700 to the variable autotransformer.

2. Power on both the autotransformer and the WFM700.

3. Connect the HD video generator to INPUT A using a 75 8 cable.

4. Set the HD video generator for a 1080i 59.94 100% Sweep1–30MHz

signal.

5. Press the INPUT button and select Input A.

6. Vary the autotransformer from 90 V to 264 V.

7. CHECK for a stable display and no error indications over the entire voltage

range.

8. Set autotransformer to 90 V.

9. Press the ON/STBY button to power off the WFM700.

10. Press the ON/STBY button to power on the WFM700.

11. CHECK that the WFM700 re-starts and after boot-up the HD color bar signal

is displayed.

12. Return the autotransformer setting to local nominal mains voltage.

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Performance Verification

Signal Data Paths

This test checks the digital data paths.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

The following characteristics are directly checked:

H Vertical Measurement Accuracy, YPbPr

H Vector Vertical Gain Accuracy

The following characteristics are indirectly checked:

H Frequency Response

H Sweep Accuracy and Linearity

H Vector Horizontal Gain Accuracy

H Vector Display to Graticule Registration

H Lightning and Diamond Vertical Gain Accuracy

H Arrowhead Signal to Graticule Registration

H Arrowhead Composite Limit Cursor Accuracy and Detection Level

Accuracy

1. Ensure that the Self Tests on page 2--4 have been performed and passed.

2. Connect the HD video generator to INPUT A using a 75 8 cable.

3. Press the INPUT button and select Input A.

4. Set the HD video generator for a 1080i 59.94 10-bit Shallow Ramp Matrix

signal.

5. Press the WFM button.

6. Touch Pr and Pb to turn off the color difference signals.

NOTE. The Y component must be on to allow both the Pr and Pb components to be turned off.

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Performance Verification

7. CHECK that the steps in the displayed ramps are monotonic (all steps are in the same direction) and approximately one pixel high. See Figure 2--1.

NOTE. If the steps are 4 pixels high, it may be that the input signal has only 8 bits of resolution.

8. Press the GAIN button.

9. Touch Gain: 10x.

10. CHECK that the steps in the ramps are 0.7 mV to 0.9 mV. (Use the voltage

cursors for this measurement.) See Figure 2--2.

11. Press the WFM button.

12. Touch Pb to turn on the Pb component.

13. Touch Y to turn off the Y component.

14. Press the GAIN button.

15. Touch Gain: 1x.

16. CHECK for step direction and height by repeating steps 7 through 10 above.

17. Press the WFM button.

18. Touch Y and Pr to turn these components back on. All components should

be on (Y, Pb, and Pr).

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Performance Verification

Cursors adjusted to

measure one step

Figure 2- 1: Signal data paths performance verification screen one

2- 12

Figure 2- 2: Signal data paths performance verification screen two

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Stop here for WFM7HD. The Signal Data Path procedure is now finished for the WFM7HD Input Module. Continue with this check if testing a WFM7A or WFM7M Input Module.

19. Connect the SD video generator to INPUT B using a 75 8 cable.

20. Set the SD video generator for a 525-format 10-bit shallow ramp matrix

signal.

21. Press the INPUT button and select Input B.

22. Press the WFM button.

23. Touch Pr and Pb to turn off the color difference signals.

NOTE. The Y component must be on to allow both the Pr and Pb components to be turned off.

24. CHECK that the steps in the displayed ramps are monotonic (all steps are in the same direction) and approximately one pixel high. See Figure 2--1.

NOTE. If the steps are 4 pixels high, it may be that the input signal has only 8 bits of resolution.

25. Press the GAIN button.

26. Touch Gain: 10x.

27. Press the CLR MENU button.

28. CHECK that the steps in the ramps are 0.7 mV to 0.9 mV. (Use the voltage

cursors for this measurement.)

29. Press the WFM button.

30. Touch Pr and Pb to turn these components back on. All components should

be on (Y, Pb, and Pr).

31. Press the GAIN button.

32. Touch Gain: 1x.

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Performance Verification

HD LCD Pixel Defects

(WFM7HD only)

This step checks for defective display pixels with a HD video signal.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the HD video generator to INPUT A using a 75 8 cable.

2. Set the HD video generator for a 1080i 59.94 100% flat field signal.

3. Press the INPUT button and select Input A.

4. Press the PICTURE button.

5. Count any pixels stuck low (not white).

6. Change the HD video generator signal to 0% flat field.

7. Count any pixels stuck high (not black).

8. CHECK the total number of pixels counted in steps 5 and 7 is less than six.

NOTE. If the bad pixel count exceeds six, perform the procedure again. If a pixel fails for both black and white signals, count it only once.

SD LCD Pixel Defects

(WFM7A and WFM7M

only)

This step checks for defective display pixels with a SD video signal.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the SD video generator to INPUT B using a 75 8 cable.

2. Set the SD video generator for a 525--format 100% flat field signal.

3. Press the INPUT button and select Input B.

4. Press the PICTURE button.

5. Count any pixels stuck low (not white).

6. Change the SD video generator signal to 0% flat field.

7. Count any pixels stuck high (not black).

8. CHECK the total number of pixels counted in steps 5 and 7 is less than six.

NOTE. If the bad pixel count exceeds six, perform the procedure again. If a pixel fails for both black and white signals, count it only once.

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WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Error Detection Data

Paths

This test checks data paths and error detection.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

The following characteristics are directly and indirectly checked:

H Data Integrity

H RGB Gamut error Detection Level Limits

H RGB Gamut error Detection Level Accuracy

1. Connect the HD video generator to INPUT A using a 75 8 cable.

2. Set the HD video generator for a 1080i 59.94 0% flat field signal. Enable

Error Detection and Handling (EDH) if necessary.

3. Press the INPUT button and select Input A.

4. Press the STATUS button.

5. Touch the Display soft key.

6. Touch the Alarm Status soft key and then touch the Done soft key.

7. Touch the Serial Alarms soft key.

8. CHECK that the Embedded CRC status reads:

292M Y CRC error Status:OK 292M C CRC error Status:OK

9. Touch the General Alarms soft key.

10. CHECK that gamut errors read as follows:

RGB Gamut Error Status: OK Composite Gamut Error Status: OK

11. Set the HD video generator for a 1080i 59.94 SMPTE color bars signal.

12. CHECK that gamut errors read as follows:

RGB Gamut Error Status: Alarm Composite Gamut Error Status: OK

13. Set the HD video generator for a 1080i 59.94 100% color bars signal.

14. CHECK that gamut errors read as follows:

RGB Gamut Error Status: OK Composite Gamut Error Status: Alarm

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Performance Verification

Serial Video Output

This test checks the serial video output signal into a 75 8 load.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the SD video generator to INPUT B using a 75 8 cable.

2. Set the SD video generator for a 525-format 100% color bars signal.

3. Connect the SERIAL OUT to the 75 8 input of the test oscilloscope using a

75 8 cable. Use a 75 8-to-50 8 adapter on the input of the test oscilloscope if necessary.

4. Press the INPUT button and select Input B.

NOTE. If testing a WFM7HD, a display message will report

standard

. This will not affect the test.

unsupported

5. Measure the signal amplitude on the test oscilloscope and note this measurement. The following substeps will help obtain a measurable display on the test oscilloscope.

a. Ensure that the termination is correct on the test oscilloscope.

b. Set the vertical scale to 200 mV/div, horizontal scale to 5 ns/div, and the

trigger position to 90%.

c. Set the display style to dots.

d. Set the trigger level to zero, and to neglect glitches of either polarity for

widths to 30 ns.

e. The oscilloscope display should show a few random transitions followed

by 30 ns with no transitions. This is followed by the triggering transition. See Figure 2--3.

f. When measuring, disregard signal noise. Measure the waveform

amplitude from the centers of the high and low levels in the region from 5 ns to 10 ns before the triggering transition.

g. Note the signal amplitude.

6. Calculate the percent amplitude error with the formula below using the

measured value from step 5.

Amplitude Error 

Measured mV  800 mV

7. CHECK that the calculated error is between5%.

2- 16

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Measure amplitude before

triggering transition

Figure 2- 3: Ser ial video output level performance verification screen

SD PIX MON Output Level

This test checks the SD PIX MON output level into 75 8 load.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the SD video generator to INPUT B using a 75 8 cable.

2. Set the SD video generator for a 525-format 100% color bars signal.

3. Connect the SD PIX MON output to the 75 8 input of the test oscilloscope

using a 75 8 cable. Use a 75 8-to-50 8 adapter on the input of the test oscilloscope if necessary .

4. Press the INPUT button and select Input B.

NOTE. A WFM7HD will report

unsupported standardI. This will not affect the

results of this check.

5. Measure the signal amplitude on the test oscilloscope. The following substeps will help obtain a measurable display on the test oscilloscope. Note this measurement.

a. Ensure that the termination is correct on the test oscilloscope. Use a

converter if necessary.

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Performance Verification

b. Set the vertical scale to 200 mV/div, horizontal scale to 5 ns/div, and the

trigger position to 90%.

c. Set the display style to dots.

d. Set the trigger level to zero, and to neglect glitches of either polarity for

widths to 30 ns.

e. The oscilloscope display should show a few random transitions followed

by 30 ns with no transitions. This is followed by the triggering transition. See Figure 2--4.

f. When measuring, disregard signal noise. Measure the waveform

amplitude from the centers of the high and low levels in the region from 5 ns to 10 ns before the triggering transition.

g. Note the measurement.

6. Calculate the percent amplitude error using the formula:

Percent Amplitude Error 

Measured mV  800 mV

7. CHECK that the calculated error is within5%.

Measure amplitude before

triggering transition

2- 18

Figure 2- 4: SD PIX MON output level performance screen

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

PIX Video Output Level

This step checks the active video and of black (blanking) levels.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the HD video generator to INPUT A using a 75 8 cable.

2. Press the INPUT button and select Input A.

3. Set the HD video generator for a 1080i 59.94 100% color bars signal.

4. Connect the PIX G/Y output to the 75 8 input of the test oscilloscope using

a758 cable. Use a 75 8-to-50 8 adapter on the input of the test oscillo- scope if necessary.

5. Press the CONFIG button.

6. Touch the Video Inputs/Outputs soft key, then Next Menu.

7. Touch the Output Active for HD soft key, then YPbPr.

8. Press the CONFIG button twice to exit menu.

9. Set the test oscilloscope to view the first color bar. The following oscillo-

scope settings normally provide a usable display.

Vertical Scale 100 mV/div Vertical Position –3.5 div Horizontal Scale 1 us/div Horizontal Trigger Position 50% Trigger Slope Rising edge Trigger Level 500 mV

10. Measure the amplitude between the black level and the first color bar and note the measurement. See Figure 2--5.

11. Calculate the percent amplitude error using the formula:

Amplitude Error 

Measured Amplitude mV  700 mV

12. CHECK that the calculated error is between 5%.

13. Measure the amplitude of the black level (the level preceding the first color

bar step) referenced to ground on the test oscilloscope. Note the measurement. See Figure 2--5.

14. CHECK that the black level is between 25 mV.

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Performance Verification

First color bar

Ground reference

Black level

Figure 2- 5: HD pix G/Y video output level performance screen

15. Move the cable from the PIX G/Y to the PIX B/Pb connector.

16. Set the test oscilloscope to view the signal. The following oscilloscope

settings normally provide a usable display.

Vertical Scale 100 mV/div Horizontal Scale 10 us/div Horizontal Trigger Position 10% Trigger Slope Rising edge Trigger Level 300 mV

17. Measure the peak-to-peak amplitude of the waveform displayed on the oscilloscope. See Figure 2--6.

18. Calculate the percent amplitude error using the formula:

Amplitude Error 

Measured Amplitude mV  700 mV

2- 20

19. CHECK that the calculated error is between 5%.

20. Measure the black level (the widest horizontal step) referenced to ground on

the test oscilloscope. Change test oscilloscope settings as needed to obtain the best display. See Figure 2--6.

21. CHECK that the black level is between 25 mV.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

22. Move the cable from the PIX B/Pb to the PIX R/Pr connector.

23. Repeat steps 17 through 21.

Pk - Pk

level

Ground reference

Black

level

Figure 2- 6: HD pix B/Pb and R/Pr video output level performance screen

Stop here for WFM7HD. The PIX Video Output Level procedure is now finished

for the WFM7HD Input Module. Continue with this check if testing a WFM7A or WFM7M Input Module.

24. Connect the SD video generator to INPUT B using a 75 8 cable.

25. Press the INPUT button and select Input B.

26. Set the SD video generator for a 525-format 100% color bars signal.

27. Connect the PIX G/Y output to the 75 8 input of the test oscilloscope using

a758 cable. Use a 75 8-to-50 8 adapter on the input of the test oscillo- scope if necessary.

28. Press the CONFIG button.

29. Touch the Video Inputs/Outputs soft key, then Next Menu.

30. Touch the Output Active for SD soft key, then YPbPr.

31. Press the CONFIG button twice to exit the menu.

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Performance Verification

32. Set the test oscilloscope to view the first color bar. The following oscilloscope settings normally provide a usable display.

Vertical Scale 100 mV/div Vertical Position –3.5 div Horizontal Scale 5 us/div Horizontal Trigger Position 50% Trigger Slope Rising edge Trigger Level 500 mV

33. Measure the amplitude between the black level and the first color bar and note the measurement. See Figure 2--7.

34. Calculate the percent amplitude error using the formula:

Amplitude Error 

Measured Amplitude mV  700 mV

35. CHECK that the calculated error is between 5%.

36. Measure the black level (the level preceding the first color bar step)

referenced to ground on the test oscilloscope. Change test oscilloscope settings if needed. Note the measurement. See Figure 2--7.

37. CHECK that the black level is between 25 mV.

First color bar

2- 22

Ground reference

Black level

Figure 2- 7: SD pix video output level performance screen

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

38. Move the cable from the PIX G/Y to the PIX B/Pb connector.

39. Set the test oscilloscope to view the signal. The following oscilloscope

settings normally provide a usable display.

Vertical Scale 100 mV/div Horizontal Scale 10 us/div Horizontal Trigger Position 10% Trigger Slope Rising edge Trigger Level 300 mV

40. Measure the peak-to-peak amplitude of the waveform displayed on the oscilloscope. See Figure 2--6 on page 2--21.

41. Calculate the percent amplitude error using the formula:

External Reference

Amplitude Error 

Measured Amplitude mV  700 mV

42. CHECK that the calculated error is between 5%.

43. Measure the black level (the widest horizontal step) referenced to ground on

the test oscilloscope. Change test oscilloscope settings as needed to obtain the best display. See Figure 2--6.

44. CHECK that the black level is between 25 mV.

45. Move the cable from the PIX B/Pb to the PIX R/Pr connector.

46. Repeat steps 40 through 44.

47. Disconnect the cable from the PIX R/Pr connector.

This test checks for stable operation with external reference signals.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the output from the analog video generator to one of the REF IN connectors using a 75 8 cable.

2. Connect a 75 8 termination to the remaining REF IN connector.

3. Set the analog video generator for a PAL black signal.

4. Connect the output from the HD video generator to INPUT A using a 75 8

cable.

5. Set the HD video generator for a 1080i 50 100% color bars signal.

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Performance Verification

6. Press the DISPLAY button and touch the Thumbnail Picture soft key (to turn off the thumbnail picture).

7. Press the WFM button.

8. Press the INPUT button and select Input A.

9. Touch the Reference: soft key so that Reference is set to External.

10. CHECK that the displayed waveform remains locked to the external

reference.

NOTE. The waveform is considered locked if the color bar steps are distinct and

the red

The appearance of the displayed waveform depends on the phase or frequency difference between the HD video generator and the analog video generator. A phase difference causes a horizontal shift of the waveform, while a frequency difference causes the waveform to slowly roll horizontally.

UnlockedImessage is not present.

11. Set the analog video generator for a 1080i 60 black signal.

12. Set the HD video generator for a 1080i 60 100% color bars signal.

13. CHECK that the displayed waveform remains locked to the external

reference.

14. Set the analog video generator for a 720p 59.94 black signal.

15. Set the HD video generator for a 720p 59.94 100% color bars signal.

16. CHECK that the displayed waveform remains locked to the external

reference.

17. Touch the Reference: soft key so that Reference is set to Internal.

18. Disconnect the analog video generator.

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WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

GBR Frequency Response

This test checks the typical performance of the PIX G/Y, PIX B/Pb, and PIX R/Pr outputs.

Typical Operation Check. This test checks for typical output levels. Typical values are not guaranteed characteristics and are not listed in the test record.

1. Connect the output from the HD video generator to INPUT A using a 75 8

cable.

2. Set the HD video generator for a 1080i 59.94 20--30 MHz Multiburst signal.

3. Set the HD video generator Pb and Pr amplitudes to 0 (off).

4. Connect the PIX G/Y output to the 75 8 input of the test oscilloscope. Use

a758-to-50 8 adapter on the input of the test oscilloscope if necessary .

5. Press the CONFIG button.

6. Touch the Video Inputs/Outputs soft key, then Next Menu.

7. Touch the Output Active for HD soft key.

8. Touch the RGB soft key.

9. Press the CONFIG button twice to exit the menu.

10. Press the INPUT button and select Input A.

11. Set the test oscilloscope to view the signal packets. The following oscillo-

scope settings normally provide a usable display.

Vertical Scale 100 mV Horizontal Scale 5 us/div Horizontal Trigger Position 10% Trigger Level 100 mV

NOTE. When making the following measurements, disregard the spiking on the packet waveforms.

12. Measure the signal amplitude of the reference level before the first packet. Note the Reference measurement. See Figure 2--8.

13. Measure the amplitude of the smallest packet. Note the Smallest Packet measurement. See Figure 2--8.

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Performance Verification

Reference level

Packets

Figure 2- 8: HD GBR frequency response performance screen

14. Calculate the percent amplitude variation using the formula:

Amplitude Variation  100 

Smallest Packet  Reference

Reference

15. CHECK that the calculated measurement is between 10% (typical).

16. Measure the amplitude of the largest packet. Note the Largest Packet

measurement. See Figure 2--8.

17. Calculate the percent amplitude variation using the formula:

Amplitude Variation  100 

Largest Packet  Reference

Reference

18. CHECK that the calculated measurement is between 10% (typical).

19. Move the cable from the PIX G/Y to the PIX B/Pb connector.

20. Repeat steps 12 through 18.

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21. Move the cable from the PIX B/Pb to the PIX R/Pr connector.

22. Repeat steps 12 through 18.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Stop here for WFM7HD. The GBR Frequency Response procedure is now finished for the WFM7HD Input Module. Continue with this check if testing a WFM7A or WFM7M Input Module.

23. Connect the SD video generator to INPUT B using a 75 8 cable.

24. Set the SD video generator for a 525 line 60% Multiburst signal.

25. Set the SD video generator Pb and Pr amplitudes to 0 (off).

26. Connect the PIX G/Y output to the 75 8 input of the test oscilloscope using

a758 cable. Use a 75 8-to-50 8 adapter on the input of the test oscillo- scope if necessary.

27. Press the CONFIG button.

28. Touch the Video Inputs/Outputs soft key, then Next Menu.

29. Touch the Output Active for SD soft key.

30. Touch the RGB soft key.

31. Press the CONFIG button twice to exit the menu.

32. Press the INPUT button and select Input B.

33. Set the test oscilloscope to view the signal packets. The following oscillo-

scope settings normally provide a usable display.

Vertical Scale 100 mV Horizontal Scale 5 us/div Horizontal Trigger Position 0% Trigger Level 100 mV

NOTE. When making the following measurements, disregard the spiking on the packet waveforms.

34. Measure the signal amplitude of the reference levels before the first packet. Note the Reference measurement. See Figure 2--9.

35. Measure the amplitude of the smallest packet. Note the Smallest Packet measurement. See Figure 2--9.

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Performance Verification

Reference level

Packets

Figure 2- 9: SD GBR frequency response performance screen

36. Calculate the percent amplitude variation using the formula:

Amplitude Variation  100 

Smallest Packet  Reference

Reference

37. CHECK that the calculated measurement is between 10% (typical)

38. Measure the amplitude of the largest packet. Note the Largest Packet

measurement. See Figure 2--9.

39. Calculate the percent amplitude variation using the formula:

Amplitude Variation  100 

Largest Packet  Reference

Reference

40. CHECK that the calculated measurement is between 10% (typical)

41. Move the cable from the PIX G/Y to the PIX B/Pb connector.

42. Repeat steps 34 through 40.

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43. Move the cable from the PIX B/Pb to the PIX R/Pr connector.

44. Repeat steps 34 through 40.

45. Disconnect the test setup.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Cable Loss

Accommodation

This test checks for error-free operation with 0 to 30 dB signal loss.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Set the HD video generator for a 1080i 59.94 100% color bars signal.

2. Connect 90 meters of 75 8 cable from the HD video generator to INPUT A.

NOTE. You can substitute the 90 meters of cable with an HD cable simulator set for 90 meters.

3. Press the INPUT button and select Input A.

4. Press the STATUS button.

5. Touch the Display soft key.

6. Touch the Session soft key and then touch the Done soft key.

7. Touch the Video Session soft key.

8. CHECK that no Embedded CRC Y or C errors messages occur in an interval

of 10 seconds.

9. Disconnect the test setup.

Stop here for WFM7HD. The Cable Loss procedure is now finished for the WFM7HD Input Module. Continue with this check if testing a WFM7A or WFM7M Input Module.

10. Set the SD video generator for a 525-format 75% color bars signal.

11. Connect 325 meters of 75 8 cable from the SD video generator to INPUT B.

NOTE. You can substitute the 325 meters of cable with an SD cable simulator set for 325 meters.

12. Press the INPUT button and select Input B.

13. Press the STATUS button.

14. Touch the Video Session soft key.

15. CHECK that no Embedded CRC Y or C errors messages occur in an interval

of 10 seconds.

16. Disconnect the test setup.

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Performance Verification

Eye Vertical Scale

(WFM7M only)

This test checks the Eye vertical deflection factor. This procedure is only applicable for a WFM7M Input Module.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the SD video generator to the 75 8 input of the test oscilloscope using a 75 8 cable. Use a 75 8-to-50 8 adapter on t he input of the test oscilloscope if necessary .

2. Set the SD video generator for a 525-format 100% color bars signal.

3. Set the test oscilloscope to view the signal. The following oscilloscope

settings normally provide a usable display.

Vertical Scale 200 mV Horizontal Scale 2 ns/div Horizontal Trigger Position 10% Trigger Level 100 mV

4. Measure the amplitude of the signal on the test oscilloscope. Note this measurement as the Reference Amplitude. See Figure 2--10 for measurement points.

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Measure signal,

disregard peaks and dips

Figure 2- 10: Eye vertical scale reference level screen

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Performance Verification

5. Move the signal from the test oscilloscope to INPUT B.

6. Press the INPUT button and select Input B.

7. Press the EYE button and touch the 3Eyesoft key (3Eyeselected).

8. Press the CURSOR button and touch the Voltage soft key (Voltage

selected).

9. Measure the signal amplitude displayed on the WFM700 using the voltage cursors. Position the cursors where the waveform is unaffected by overshoot or ringing. See Figure 2--11.

10. Calculate scale error using the formula:

Displayed Amplitude --- Reference Amplitude

Scale Error  100 

11. CHECK that the calculated scale error is between 5%.

Reference Amplitude

Measure signal,

disregard peaks and dips

12. Disconnect the test setup.

Figure 2- 11: Eye vertical scale performance screen

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Performance Verification

Input Return Loss

This test checks the signal return loss. Performance is checked indirectly.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to the input port of the Return Loss Bridge

using a 50 8 cable.

3. Connect the output of the Return Loss Bridge to the 50 8 input of the test oscilloscope using a 50 8 cable. Do not connect the test port of the Bridge at this time.

4. Set the RF generator as follows:

Frequency 900 MHz Phase Modulation OFF Frequency Modulation OFF Output Power +7.0 dBm RF Output ON

5. Adjust the test oscilloscope to obtain a stable display of the 900 MHz sine wave from the RF generator.

6. Measure the amplitude of the signal on the test oscilloscope. Note this measurement as the reference level.

7. Connect the test port of the Return Loss Bridge directly to INPUT A. Do not use any cables or adapters.

8. Press the INPUT button and select Input A.

9. Measure the amplitude of the signal on the test oscilloscope. Note this as the

A Reflection level.

10. Calculate the return loss with the formula below using the measured values from steps 6 and 9.

Reference

Input A Return Loss  20  log10

11. CHECK that the calculated return loss is >25 dB for Input A.

A Reflection

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Performance Verification

12. Move the Return Loss Bridge test port from Input A to Input B.

13. Select Input B.

14. Measure the amplitude of the signal on the test oscilloscope. Note this as the

B Reflection level.

15. Calculate the return loss with the formula below using the measured values from steps 6 and 14.

Reference

Input B Return Loss  20  log10

16. CHECK that the calculated return loss is >25 dB for Input B .

17. Disconnect the test setup.

B Reflection

Jitter Noise Floor (WFM7M

only)

This test checks the Jitter Noise Floor.

Typical Operation Check. This test checks for typical operation. Typical values are not guaranteed characteristics and are not listed in the test record.

NOTE. If this test is performed out of sequence or the sequence of tests has been interrupted (such as power off or input from another module was selected), perform the steps in this note to prepare the instrument to continue testing.

a. Connect the SD video generator to INPUT B usinga758 cable. b. Set the SD video generator for a 525-format 100% color bar signal. c. Press the INPUT button and select Input B. d. Press the EYE button.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this test.

3. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation OFF Phase Modulation OFF RF Output ON

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Performance Verification

4. Press the INPUT button and select Input A.

5. Press the EYE button and then touch the Display soft key.

6. Touch the Jitter soft key and then touch the Done soft key.

7. Touch the Hi Pass Filter: soft key and set to 100 kHz.

8. CHECK that the Measured Jitter is approximately 30 ps (typical).

9. Touch the Hi Pass Filter: soft key and set to 10 kHz.

10. CHECK that the Measured Jitter is approximately 60 ps (typical).

11. Change the RF generator settings as follows:

Frequency 135.0 MHz

12. Touch the Hi Pass Filter: soft key and set to 10 Hz.

13. CHECK that the Measured Jitter is approximately 200 ps (typical).

Eye Time Base Jitter

(WFM7M only)

This test checks the Eye Time Base Jitter.

Typical Operation Check. This test checks for typical operation. Typical values are not guaranteed characteristics and are not listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this test.

3. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation OFF Phase Modulation OFF RF Output ON

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Performance Verification

4. Press the INPUT button and select Input A.

5. Press the EYE button, touch the Eye soft key and select 3Eye.

6. Touch the Clock BW: soft key and set to 1kHz.

7. Press the DISPLAY button.

8. Touch the Trace Settings soft key, then select Waveform and adjust the

waveform value to +20 using the General Purpose Knob.

9. Use the Time cursors to measure the width of the point where a rising edge crosses a falling edge. S ee Figure 2--12.

10. CHECK that the measured value is approximately 0.07 ns (typical).

11. Change the RF generator settings as follows:

Frequency 135.0 MHz

12. Use the Time cursors to measure the width of the point where a rising edge crosses a falling edge. S ee Figure 2--12.

13. CHECK that the measured value is approximately 0.15 ns (typical).

Measure width

of crossing

Figure 2- 12: Eye time base jitter performance screen

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Performance Verification

Eye Pattern Display Jitter

Attenuation Error (WFM7M

only)

This test checks the jitter error (for frequencies greater than 2 times the Clock BW setting). This procedure is only applicable for a WFM7M Input Module.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this test.

3. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation OFF LFGEN2 Frequency 40 Hz LFGEN2 Waveshape SINE Phase Modulation Source LF2 Phase Deviation 1.57 RADIANS RF Output ON Phase Modulation ON

4. Press the EYE button.

5. Touch the Clock BW: soft key. On the resulting screen, touch the 10 Hz soft key and then the Done soft key.

6. Touch the 3Eyesoft key (3Eyeselected).

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Performance Verification

7. Adjust the RF generator phase deviation in 0.01 radian steps until the displayed waveform shows exactly 1 UI phase modulation. Note the phase deviation. See Figure 2--13.

NOTE. 1 UI phase modulation is achieved when the peak positive phase modulation exactly overlaps the peak negative modulation. The result is that the sine wave is brighter where the peak positive and negative phase modulations overlap. Slowly adjust the RF generator phase deviation to become familiar w ith the appearance of 1 UI phase modulation.

Under one UI phase modulation achieved

One UI phase modulation achieved

Over one UI phase modulation achieved

Figure 2- 13: Eye clock recovery bandwidth performance screen

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Performance Verification

8. Calculate percent amplitude error using the formula:

1.57 --- Phase Deviation

Amplitude Error  100 

9. CHECK that the calculated amplitude error is between –10% and +10%.

10. Set Clock BW to 100 Hz.

11. Adjust the RF generator settings as follows:

LFGEN2 Frequency 400 Hz

12. Adjust the RF generator phase deviation in 0.01 radian steps until the displayed waveform shows exactly 1 UI phase modulation. Note the phase deviation. See Figure 2--13.

13. Calculate percent amplitude error using the formula:

Amplitude Error  100 

1.57 --- Phase Deviation

1.57

14. CHECK that the calculated amplitude error is between –10% and +10%.

15. Set the Clock BW to 1kHz.

16. Change the RF generator settings as follows:

LFGEN2 Frequency 4000 Hz

17. Adjust the RF generator phase deviation in 0.01 radian steps until the displayed waveform shows exactly 1 UI phase modulation. Note the phase deviation. See Figure 2--13.

18. Calculate percent amplitude error using the formula:

1.57 --- Phase Deviation

Amplitude Error  100 

19. CHECK that the calculated amplitude error is between –10% and +20%.

20. Press the WFM button to exit eye clock BW mode.

1.57

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WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Jitter Display High Pass

Filter (WFM7M only)

This test checks the jitter high pass filter attenuation at the selected frequency. This procedure is only applicable for a WFM7M Input Module.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this test.

3. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation OFF LFGEN2 Frequency 10 Hz LFGEN2 Waveshape SINE Phase Modulation Source LF2 Phase Deviation 6.28 RADIANS RF Output ON Phase Modulation ON

4. Press the EYE button and then touch the Display soft key.

5. Touch the Jitter soft key and then touch the Done soft key.

6. Touch the Hi Pass Filter: soft key and set to 10 Hz.

7. Read the Measured Jitter amplitude (in UI) displayed on screen.

8. Calculate the jitter response in db using the formula:

Measured Jitter

Jitter Response  20  log10

9. CHECK that the calculated response is between –2 dB and –4 dB.

4UI

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Performance Verification

10. Set Hi Pass Filter to 1kHz.

11. Change RF generator settings as follows:

LFGEN2 Frequency 1 kHz

12. Repeat steps 7 through 9.

13. Set Hi Pass Filter to 10 kHz.

14. Change RF generator settings as follows:

LFGEN2 Frequency 10 kHz

15. Repeat steps 7 through 9.

16. Change RF generator settings as follows:

LFGEN2 Frequency 100 kHz

17. Set Hi Pass Filter to 1kHz.

18. Adjust the RF generator deviation for a Jitter reading of 4.0 UI.

19. Set Hi Pass Filter to 100 kHz.

20. Repeat steps 7 through 9.

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WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Eye Clock Recovery

Bandwidth (WFM7M only)

This test checks the Eye Clock recovery Bandwidth. This procedure is only applicable for a WFM7M Input Module.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this test.

3. Press the EYE button and then touch the Display soft key.

4. Touch the Eye soft key and then touch the Done soft key.

NOTE. If an adapter is needed to obtain the correct cable connectors, they should be installed at the generator, not on the WFM700.

5. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dBm Phase Modulation OFF Frequency Modulation OFF RF Output ON

6. Touch the Clock BW: soft key. On the resulting screen, touch the 100 Hz soft key and then the Done soft key.

7. Touch the 3Eyesoft key (3Eyeselected).

8. The displayed waveform should be two overlapping sine waves 180 degrees

out of phase. See Figure 2--14.

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Performance Verification

Figure 2- 14: Eye clock recovery bandwidth performance screen

9. Adjust the RF generator to add phase modulation to the signal as follows:

LFGEN2 Frequency 10 kHz LFGEN2 Waveshape SINE Phase Modulation Source LFGEN2 Phase Deviation 1.57 RADIANS Phase Modulation ON

10. The displayed waveform should fill in with 1 unit interval (UI) of phase modulation. See Figure 2--13.

NOTE. 1 UI phase modulation is achieved when the peak positive phase modulation exactly overlaps the peak negative modulation. The result is that the sine wave is brighter where the peak positive and negative phase modulations overlaps. Slowly adjust the RF generator phase deviation to become familiar with the appearance of 1 UI phase modulation.

11. Adjust the RF generator settings as follows:

LFGEN2 Frequency 100 Hz Phase Deviation 2.22 RADIANS

12. Adjust the RF generator LF2 frequency in 1 Hz steps until the displayed waveform shows exactly 1 UI phase modulation. Note the LF2 frequency setting. See Figure 2--13 on page 2--37.

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Performance Verification

13. Calculate the percentage of frequency error using the formula:

Frequency Error  LF2 frequency  100

14. CHECK that the calculated frequency error is between –10% and +10%.

15. Set the Clock BW to 10 Hz.

16. Adjust RF generator settings as follows:

LFGEN2 Frequency 10 Hz

17. Adjust the RF generator LF2 frequency in 0.1 Hz steps until the displayed waveform shows exactly 1 UI phase modulation. See Figure 2--13 on page 2--37. Note the LFGEN2 frequency setting.

18. Calculate the percentage of frequency error using the formula:

Frequency Error  10 ÆLF2 frequency  10

19. CHECK that the calculated frequency error is between –10% and +10%.

20. Set Clock BW to 1kHz.

21. Adjust the RF generator settings as follows:

LFGEN2 Frequency 1 kHz

22. Adjust the RF generator LF2 frequency in 10 Hz steps until the displayed waveform shows exactly 1 UI phase modulation. See Figure 2--13 on page 2--37. Note the LFGEN2 frequency setting.

23. Calculate percent frequency error using the formula:

Frequency Error  0.1 ÆLF2 frequency  1000

24. CHECK that the calculated frequency error is between –10% and +10%.

25. Press the WFM button to exit Eye mode.

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Performance Verification

Jitter Gain Check (WFM7M

only)

This test checks the jitter display and JITTER OUT scale factors.

Typical Operation Check. This test checks for typical operation. Typical values are not guaranteed characteristics and are not listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the RF generator output.

2. Connect the RF generator output to INPUT A using a 75 8 cable. Imped-

ance matching is not important for this connection.

3. Set the RF generator as follows:

Frequency 741.7582 MHz Output Level 0 dB Frequency Modulation OFF LFGEN2 Frequency 10 kHz LFGEN2 Waveshape SQUARE Phase Modulation Source LFGEN2 Phase Deviation 3.14 RADIANS RF Output ON Phase Modulation ON

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4. Connect the JITTER OUT to the 75 8 input of the test oscilloscope using a 75 8 cable. Use a 75 8-to-50 8 adapter on the input of the test oscilloscope if necessary.

5. Press the INPUT button and select Input A.

6. Press the EYE button and then touch the Display soft key.

7. Touch the Jitter soft key and then touch the Done soft key.

8. Touch the Hi Pass Filter: soft key and set to 10 Hz.

9. Set the oscilloscope controls to produce a stable display. Limit the band-

width setting to reduce displayed noise for better results. See Figure 2--15.

WFM700 Series Waveform Monitors S ervice Manual

Figure 2- 15: Jitter gain check performance screen

Performance Verification

10. Measure the amplitude of the 10 kHz square wave on the test oscilloscope. Note the measurement.

11. Calculate the JITTER OUT scale factor error percentage using the formula:

Jitter Out Scale Factor Error 

Measured Amplitude mV  200 mV

12. CHECK that the calculated error is 10% (typical).

13. Read the Measured Jitter amplitude in UI on the WFM700 display.

14. Calculate the HD jitter gain error in percentage using the formula:

HD Jitter Gain Error ÆMeasured Jitter UI  2UIÉ 50

15. CHECK that the calculated error is 10% (typical).

16. Change RF generator settings as follows:

Frequency 135.0 MHz

17. Allow the display to settle for several seconds.

18. Read the Measured Jitter amplitude in UI on the WFM700 display.

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Performance Verification

19. Calculate the SD jitter gain error percentage using the formula:

SD Jitter Gain Error ÆMeasured Jitter UI  2UIÉ 50

20. CHECK that the calculated error is 10% (typical).

21. Disconnect the test setup.

EyePatternDisplaySignal

Bandwidth (WFM7M only)

This test checks the eye pattern signal bandwidth. This procedure is only applicable for a WFM7M Input Module.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Press the CONFIG button.

2. Touch the Calibration soft key and then Next Menu.

3. Touch the Eye Sig BW Test soft key and then the Start Eye Sig BW Test

soft key. This puts the WFM700 in Eye Bandwidth mode and starts the test.

4. Touch the Input# softkey, select Input A, then touch Done.

5. Install the wide band 50 8-to-75 8 matching pad and a 75 8 N-to-BNC

adapter on the RF generator output.

6. Connect the RF generator output to INPUT A using the 75 8 18 inch low

loss cable.

NOTE. The WFM700 inputs are terminated into 75 8. Impedance matching is necessary for this test.

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CAUTION. Avoid excess str ess on the BNC connections. If adapters and/or terminations are installed on the inputs of the WFM700, provide support to the cable assembly.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

7. Set the RF generator as follows:

FREQUENCY 20 MHz PHASE MODULA TION OFF FREQUENCY MODULATION OFF OUTPUT LEVEL 6 dBm RF OUTPUT ON

8. Press the CURSOR button and touch Voltage cursors (Voltage selected).

9. Using the SELECT button and the General Purpose Knob, set cursor 1 to

--400 mV and cursor 2 to +400 mV.

10. Set the RF generator output level so that the displayed signal amplitude matches the cursors. It may be necessary to adjust the vertical position. The display is an unsynchronized waveform. See Figure 2--16.

NOTE. When setting and measuring unsynchronized signal amplitude, position the cursors halfway from the dark background to the bright central area of the waveform. It is important to position the cursor in the waveform noise consistently. Do not change display brightness or ambient lighting between measurements.

Measure pk-pk between

the bright central areas

11. Set the RF generator frequency to 2.5 GHz.

12. Measure the waveform amplitude using the cursors and note the delta

measurement.

Figure 2- 16: Eye pattern display signal bandwidth performance screen

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Performance Verification

13. While observing waveform amplitude, adjust the RF generator frequency down to 500 MHz (in 10 MHz steps). If the waveform amplitude falls below the cursors set in the previous step (step 12), re-adjust the cursors to the new minimum level.

14. Calculate the high frequency response using the formula:

Measured Minimum

High Frequency Response  20  log10

15. CHECK that the calculated high frequency response is between 0 and –3 dB.

16. Set the RF generator frequency to 50 kHz.

17. Measure the waveform amplitude using the cursors and note the measure-

ment.

18. Calculate the low frequency response using the formula:

Low Frequency Response  20  log10

800 mV

Measured Minimum

800 mV

19. CHECK that the calculated low frequency response is between 0 and –3 dB.

20. Move the input cable assembly from Input A to Input B.

21. Press the CURSOR button to exit cursor mode.

22. Touch the Input# soft key, touch Input B, then touch Done.

23. Repeat steps 7 through 19 for Input B.

24. Press the CURSOR button to exit cursor mode.

25. Touch Exit to exit Eye Bandwidth mode.

NOTE. Most front panel buttons are disabled while in the Eye Sig BW Test mode. You must use the Exit soft key to return instrument functions.

26. Disconnect the test setup.

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Performance Verification

Restore to Factory

Settings

Follow these steps to restore the WFM700 to the factory settings when finished with the Performance Verification procedures.

1. Press the CONFIG button.

2. Touch the Audio Inputs/Outputs soft key and then Next Menu.

3. Touch the AES Connectors soft key, then Input.

4. Touch the Top Menu soft key.

5. Press the PRESET button.

6. Touch the -- m o r e -- soft key, then touch the Restore Factory soft key.

Restoring factory settings overrides the current instrument state.

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Performance Verification

WFM700 Audio (Option DG) Performance Verification Procedure

The following tests verify that the Audio module (Option DG) for the WFM700 waveform monitor (all models) meets the warranted characteristics listed in the Specifications section of the WFM700 Series Technical Reference document. Characteristics with typical specifications (not warranted) are also checked.

Return Loss

This test verifies that the return loss of the AES Inputs and Outputs.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Install the 50 8 N-to-BNC adapter on the sinewave generator output.

2. Connect the RF generator output to the input port of the Return Loss Bridge

using a 50 8 cable.

3. Connect the output of the Return Loss Bridge to the 50 8 input of the test oscilloscope using a 50 8 cable. Do not connect the test port of the Bridge at this time.

4. Set the sinewave generator as follows:

Frequency 6 MHz Phase Modulation OFF Frequency Modulation OFF Output Power +2.0 dBm (0.8 V p-p) RF Output ON

5. Adjust the test oscilloscope to obtain a stable display of the 6 MHz sine wave from the RF generator. The following oscilloscope settings normally provide a usable display.

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Vertical Scale 50 mV Horizontal Scale 100 ns/div Bandwidth Limit On

6. Measure the amplitude of the signal on the test oscilloscope. Note this measurement as the reference level.

NOTE. The reference level should be between 150 mV and 200 mV. Adjust the output level of the RF generator if necessary to obtain the correct output level.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

7. Press the CONFIG button.

8. Touch the Audio Inputs/Outputs soft key and then Next Menu.

9. Touch the AES Connectors soft key and then Input.

10. Press the AUDIO button.

11. Press the INPUT button, then touch Audio In: and select External AES.

12. Connect the test port of the Return Loss Bridge directly to the AES 1--2 I/O

connector. Do not use any cables or adapters.

13. Measure the amplitude of the signal on the test oscilloscope. Note this as the Reflection level.

14. Calculate the return loss with the formula below using the measured values from steps 6 and 13.

Reference

Input Return Loss  20  log10

Reflection

Input Amplitude and

Sample Rate Range

15. CHECK that the calculated return loss is >25 dB.

16. Move the return loss bridge to each of the remaining AES I/O connectors

and repeat steps 12 through 15.

17. Disconnect the test setup.

This test verifies that each AES input locks to an input signal.

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the digital audio generator unbalanced (UNBAL) output to AES 1--2 I/O using a 75 8 cable.

2. Set the digital audio generator as follows:

Frequency 1 kHz Output Level --20 dB FS Audio Tone Sample Frequency 96 kHz Unbalanced V

p-p

2.000 V (Carrier Level)

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Performance Verification

3. Press the CONFIG button.

4. Touch the Audio Inputs/Outputs soft key, then Next Menu.

5. Touch the Audio Program Type soft key, then Stereo Pairs.

6. Press the AUDIO button.

7. Touch the Meter Scaling: soft key and select Default.

8. CHECK for an indication of –20 dB FS and no error messages in the

corresponding bars.

9. Move the audio generator output to each of the remaining AES I/O connectors and repeat step 8 for each connector.

10. Set the digital audio generator as follows:

Unbalanced V

p-p

0.2000 V (Carrier Level)

11. CHECK for an indication of –20 dB FS and no error messages in the corresponding bars.

12. Move the audio generator output to each of the remaining AES I/O connectors and repeat step 11 for each connector.

13. Set the digital audio generator as follows:

Sample Frequency 35 kHz

14. CHECK for an indication of –20 dB FS and no error messages in the corresponding bars.

15. Move the audio generator output to each of the remaining AES I/O connectors and repeat step 14 for each connector.

16. Set the digital audio generator as follows:

Unbalanced V

p-p

2.000 V (Carrier Level)

17. CHECK for an indication of –20 dB FS and no error messages in the corresponding bars.

18. Move the audio generator output to each of the remaining AES I/O connectors and repeat step 17 for each AES I/O connector.

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19. Disconnect the test setup.

WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

Output Amplitude, Rise

Time and Fall Time

This test verifies the amplitude and the rise and fall times of each AES output

Performance Requirement. This test verifies performance characteristics and is listed in the test record.

1. Connect the HD video generator to INPUT A using a 75 8 cable.

2. Set the HD video generator for a 1080i 59.94 100% color bars signal.

3. Set the HD video generator for 2 groups of embedded audio, starting with

group 1.

4. Connect the AES 1--2 I/O output to the 75 8 input of the test oscilloscope using a 75 8 cable. Use a 75 8-to-50 8 adapter on the input of the test oscilloscope if necessary .

5. Press the CONFIG button.

6. Touch the Audio Inputs/Outputs soft key, then Next Menu.

7. Touch the AES Connectors soft key, then Output.

8. Select Input 1A. (Select Input 2A if checking a second Input Module in

slot 2.)

9. Set the test oscilloscope to view the signal. The following oscilloscope settings normally provide a usable display.

Vertical Scale 200 mV/div Horizontal Scale 100 ns/div Horizontal Trigger Position 30% Trigger Slope Rising edge Trigger Level 0 mV

10. CHECK that the amplitude of the waveform displayed on the oscilloscope is between 0.9 V and 1.1 V.

11. Change the oscilloscope horizontal scale to 20 ns/div.

12. CHECK that the rise time of the waveform displayed on the oscilloscope is

between 30 ns and 44 ns.

13. Change the oscilloscope to trigger on the falling edge.

14. CHECK that the fall time of the waveform displayed on the oscilloscope is

between 30 ns and 44 ns.

15. Move the cable to each of the remaining AES I/O connectors and repeat steps 9 through 14 for each AES I/O connector.

16. Disconnect the test setup.

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Performance Verification

SD Output Jitter

(WFM7A, WFM7M only)

This test measures jitter at each AES output.

Typical Operation Check. This test checks for typical operation. Typical values are not guaranteed characteristics and are not listed in the test record.

1. Connect the SD video generator to INPUT A using a 75 8 cable.

2. Set the SD video generator for a 525-format 100% color bars signal.

3. Set the SD video generator for 2 groups of embedded audio, starting with

group 1.

4. Connect AES 1--2 I/O to the digital audio analyzer unbalanced (UNBAL)

input using a 75 8 cable.

5. Set the audio analyzer for measurement of jitter per AES3--1992 (or 1997).

6. Allow the jitter reading to settle for a few second.

7. CHECK for a typical Jitter Peak abs reading of less than 3.5 ns over an

interval of at least 5 seconds.

8. Move the cable to each of the remaining AES I/O connectors and repeat step 7 for each AES I/O connector.

HD Output Jitter

(WFM7HD only)

9. Disconnect the test setup.

This test measures jitter at each AES output.

Typical Operation Check. This test checks for typical operation. Typical values are not guaranteed characteristics and are not listed in the test record.

1. Connect the HD video generator to INPUT A using a 75 8 cable.

2. Set the HD video generator for a 1080i 59.94 100% color bars signal.

3. Set the HD video generator for 2 groups of embedded audio, starting with

group 1.

4. Connect AES 1--2 I/O to the digital audio analyzer unbalanced (UNBAL) input using a 75 8 cable.

5. Set the audio analyzer for measurement of jitter per AES3--1992 (or 1997).

6. Allow the jitter reading to settle for a few second.

7. CHECK for a typical Jitter Peak abs reading of less than 3.5 ns over an

interval of at least 5 seconds.

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WFM700 Series Waveform Monitors S ervice Manual

Performance Verification

8. Move the cable to each of the remaining AES I/O connectors and repeat step 7 for each AES I/O connector.

9. Disconnect the test setup.

Restore to Factory

Settings

Follow these steps to restore the WFM700 to the factory settings when finished with the Performance Verification procedures.

1. Press the CONFIG button.

2. Touch the Audio Inputs/Outputs soft key and then Next Menu.

3. Touch the AES Connectors soft key, then Input.

4. Touch the Top Menu soft key.

5. Press the PRESET button.

6. Touch the -- m o r e -- soft key, then touch the Restore Factory soft key.

Restoring factory settings overrides the current instrument state.

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Performance Verification

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7M Input Module Test Record

Photocopy this form and use it to record the performance test results. If your instrument also contains the optional Audio module (Option DG), photocopy that test record to record the performance test results for the Audio module.

Test Record

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test Minimum Incoming Outgoing Maximum

Power Source Range

Stable display from 90 V to 264 V Pass N/A

Re-start at 90 V Pass N/A

Signal Data Paths

High Definition

Y component ramp is monotonic Pass N/A

Y component ramps step size 0.7 mV 0.9 mV

Pb component ramp is monotonic Pass N/A

Pb component ramps step size 0.7 mV 0.9 mV

Pr component ramp is monotonic Pass N/A

Pr component ramps step size 0.7 mV 0.9 mV

Standard Definition

Y component ramp is monotonic Pass N/A

Y component ramps step size 0.7 mV 0.9 mV

Pb component ramp is monotonic Pass N/A

Pb component ramps step size 0.7 mV 0.9 mV

Pr component ramp is monotonic Pass N/A

Pr component ramps step size 0.7 mV 0.9 mV

SD LCD Pixel Defects (WFM7A and WFM7M only)

Number of bad pixels N/A 6

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WFM700/WFM7M Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Error Detection Data Paths

1080i 59.94 0% flat field

Embedded CRC status reads: Embedded CRC: SMPTE 292 Y:OK C:OK

1080i 59.94 0% flat field

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X OK

1080i 59.94 SMPTE color bars

Gamut errors read as follows: RGB Gamut Error X Alarm Composite Gamut Error X OK

1080i 59.94 100% color bars

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X Alarm

Serial Video Output

Calculated error -- 5 % +5%

SD PIX MON Output Level

Calculated error -- 5 % +5%

Pass N/A

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7M Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

PIX Video Output Level

High Definition

PIX G/Y calculated amplitude error -- 5 % +5%

PIX G/Y black level -- 2 5 m V +25 mV

PIX B/Pb calculated amplitude error -- 5 % +5%

PIX B/Pb black level -- 2 5 m V +25 mV

PIX R/Pr calculated amplitude error -- 5 % +5%

PIX R/Pr black level -- 2 5 m V +25 mV

Standard Definition

PIX G/Y calculated amplitude error -- 5 % +5%

PIX G/Y black level -- 2 5 m V +25 mV

PIX B/Pb calculated amplitude error -- 5 % +5%

PIX B/Pb black level -- 2 5 m V +25 mV

PIX R/Pr calculated amplitude error -- 5 % +5%

PIX R/Pr black level -- 2 5 m V +25 mV

External Reference

1080i 50 100% color bars

Display remains locked to the external reference Pass N/A

1080i 60 100% color bars

Display remains locked to the external reference Pass N/A

720p 59.94 100% color bars

Display remains locked to the external reference Pass N/A

Cable Loss Accommodation

HIgh Definition

No embedded CRC Y or C errors messages Pass N/A

Standard Definition

No embedded CRC Y or C errors messages Pass N/A

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WFM700/WFM7M Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Eye Vertical Scale

Calculated scale error -- 5 % +5%

Input Return Loss

Input A

Calculated return loss >25 dB N/A

Input B

Calculated return loss >25 dB N/A

Eye Pattern Display Jitter Attenuation Error

Calculated amplitude error

10 Hz Clock BW --10% +10%

100 Hz Clock BW --10% +10%

1 kHz Clock BW --10% +20%

Jitter Display High Pass Filter

Calculated jitter response

Generator at 6.28 RADIANS Phase Deviation

10 Hz Hi Pass Filter –4 dB –2 dB

1 kHz Hi Pass Filter –4 dB –2 dB

100 kHz Hi Pass Filter –4 dB –2 dB

Generator set to produce 4 UI jitter with Hi Pass Filter at 1kHz

100 kHz Hi Pass Filter –4 dB –2 dB

Eye Clock Recovery Bandwidth

Calculated frequency error

Clock BW at 100 Hz –10% +10%

Clock BW at 10 Hz –10% +10%

Clock BW at 1 kHz –10% +10%

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7M Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Eye Pattern Display Signal Bandwidth

Calculated frequency response

Input A

2.5 GHz to 500 MHz -- 3 d B 0dB

50 kHz -- 3 d B 0dB

Input B

2.5 GHz to 500 MHz -- 3 d B 0dB

50 kHz -- 3 d B 0dB

WFM700 Series Waveform Monitors S ervice Manual

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WFM700/WFM7M Input Module Test Record

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7A Input Module Test Record

Test Record

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test Minimum Incoming Outgoing Maximum

Power Source Range

Stable display from 90 V to 264 V Pass N/A

Re-start at 90 V Pass N/A

Signal Data Paths

High Definition

Y component ramp is monotonic Pass N/A

Y component ramps step size 0.7 mV 0.9 mV

Pb component ramp is monotonic Pass N/A

Pb component ramps step size 0.7 mV 0.9 mV

Pr component ramp is monotonic Pass N/A

Pr component ramps step size 0.7 mV 0.9 mV

Standard Definition

Y component ramp is monotonic Pass N/A

Y component ramps step size 0.7 mV 0.9 mV

Pb component ramp is monotonic Pass N/A

Pb component ramps step size 0.7 mV 0.9 mV

Pr component ramp is monotonic Pass N/A

Pr component ramps step size 0.7 mV 0.9 mV

SD LCD Pixel Defects

Number of bad pixels N/A 6

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WFM700/WFM7A Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Error Detection Data Paths

1080i 59.94 0% flat field

Embedded CRC status reads: Embedded CRC: SMPTE 292 Y:OK C:OK

1080i 59.94 0% flat field

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X OK

1080i 59.94 SMPTE color bars

Gamut errors read as follows: RGB Gamut Error X Alarm Composite Gamut Error X OK

1080i 59.94 100% color bars

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X Alarm

Serial Video Output

Calculated error -- 5 % +5%

SD PIX MON Output Level

Calculated error -- 5 % +5%

Pass N/A

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7A Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

PIX Video Output Level

High Definition

PIX G/Y calculated amplitude error -- 5 % +5%

PIX G/Y black level -- 2 5 m V +25 mV

PIX B/Pb calculated amplitude error -- 5 % +5%

PIX B/Pb black level -- 2 5 m V +25 mV

PIX R/Pr calculated amplitude error -- 5 % +5%

PIX R/Pr black level -- 2 5 m V +25 mV

Standard Definition

PIX G/Y calculated amplitude error -- 5 % +5%

PIX G/Y black level -- 2 5 m V +25 mV

PIX B/Pb calculated amplitude error -- 5 % +5%

PIX B/Pb black level -- 2 5 m V +25 mV

PIX R/Pr calculated amplitude error -- 5 % +5%

PIX R/Pr black level -- 2 5 m V +25 mV

External Reference

1080i 50 100% color bars

Display remains locked to the external reference Pass N/A

1080i 60 100% color bars

Display remains locked to the external reference Pass N/A

720p 59.94 100% color bars

Display remains locked to the external reference Pass N/A

Cable Loss Accommodation

HIgh Definition

No embedded CRC Y or C errors messages Pass N/A

Standard Definition

No embedded CRC Y or C errors messages Pass N/A

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WFM700/WFM7A Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Input Return Loss

Input A

Calculated return loss >25 dB N/A

Input B

Calculated return loss >25 dB N/A

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WFM700 Series Waveform Monitors S ervice Manual

WFM700/WFM7HD Input Module Test Record

Test Record

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test Minimum Incoming Outgoing Maximum

Power Source Range

Stable display from 90 V to 264 V Pass N/A

Re-start at 90 V Pass N/A

Signal Data Paths

High Definition

Y component ramp is monotonic Pass N/A

Y component ramps step size 0.7 mV 0.9 mV

Pb component ramp is monotonic Pass N/A

Pb component ramps step size 0.7 mV 0.9 mV

Pr component ramp is monotonic Pass N/A

Pr component ramps step size 0.7 mV 0.9 mV

HD LCD Pixel Defects

Number of bad pixels N/A 6

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WFM700/WFM7HD Input Module Test Record

Test Record (cont.)

Instrument Serial Number: Certificate Number: Input Module Serial Number: Temperature: Relative Humidity %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimum

Error Detection Data Paths

1080i 59.94 0% flat field

Embedded CRC status reads: Embedded CRC: SMPTE 292 Y:OK C:OK

1080i 59.94 0% flat field

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X OK

1080i 59.94 SMPTE color bars

Gamut errors read as follows: RGB Gamut Error X Alarm Composite Gamut Error X OK

1080i 59.94 100% color bars

Gamut errors read as follows: RGB Gamut Error X OK Composite Gamut Error X Alarm

Serial Video Output

Calculated error -- 5 % +5%

SD PIX MON Output Level

Calculated error -- 5 % +5%

Pass N/A

PIX Video Output Level

High Definition

PIX G/Y calculated amplitude error -- 5 % +5%

PIX G/Y black level -- 2 5 m V +25 mV

PIX B/Pb calculated amplitude error -- 5 % +5%

PIX B/Pb black level -- 2 5 m V +25 mV

PIX R/Pr calculated amplitude error -- 5 % +5%

PIX R/Pr black level -- 2 5 m V +25 mV

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WFM700 Series Waveform Monitors S ervice Manual

Tektronix WFM700 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Warranty 2

Table of Contents

List of Figures

List of Tables

General Safety Summary

Service Safety Summary

Preface

Manual Content

Manual Conventions

Related User Documents

Related Reference Documents

Contacting Tektronix

Theory of Operation

Operating Conditions

Overview

Individual Module Descriptions

Diagrams

Performance Verification

Prerequisites

Test Equipment Required

Performance Verification Conditions

Self Tests

Functional Tests

Performance Tests

WFM700 Audio (Option DG) Performance Verification Procedure

WFM700/WFM7M Input Module Test Record

WFM700/WFM7A Input Module Test Record

WFM700/WFM7HD Input Module Test Record