Agilent 71612B Programming Manual

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71612Series of Gb/s Testers  Operating and Programming Manual

71612-90015

March 1, 2001

Title & Document Type:

Manual Part Number:

Revision Date:

HP References in this Manual

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HP 71612 Series of Gb/s Testers

Operating and Programming Manual

SERIAL NUMBERS

This manual applies directly to HP 71612 12 Gb/s Error Performance Analyzers comprising the following elements:

HP 70843

For additional important information about serial numbers, see SERIAL NUMBER INFORMATION on page 1-9 in the Operating Manual.

Serial number information for other elements in the system is contained in the following manuals:

Display Mainframe Clock Source

Option UHF 0.1-12 Gb/s Error Performance Analyzer with serial number(s) prefixed 3xxxU or GBxxxxxxxx.

Option UHG 0.1-12 Gb/s Pattern Generator with serial number(s) prefixed 3xxxU or GBxxxxxxxx.

Option UHH Error Detector with serial number(s) prefixed 3xxxU or GBxxxxxxxx.

see HP 70004A Installation and Verification Manual. see HP 70001A Installation and Verification Manual. see HP 70340A Operating and Calibration Manual.

HP Part No. 71612-90015

Printed in U.K. March 2001

Declaration of Conformity

according to ISO/IEC Guide 22 and EN45014

Manufacturer’s Name: Hewlett-Packard Ltd. Manufacturer’s Address:

Declares that the product

Product Name

Model Number: Product Options:

Conforms with the protection requirements of European Council Directive 89/336/EEC on the approximation of the laws of the member states relating to electromagnetic compatibility, against EMC test specifications EN 55011:1991 (Group 1, Class A) and EN 50082-1:1992.

As Detailed in:

Assessed by:

Technical Report Number:6893/2200/CBR, dated 21 August 1997

Telecomms Networks Test Division South Queensferry West Lothian, EH30 9TG Scotland, United Kingdom

12Gb/s Error Performance Analyzer System

HP 71612B This declaration covers all options of the above product as detailed in

TCF A-5951-9852-01

Electromagnetic Compatibility (EMC) Technical Construction File (TCF) No. A-5951-9852-01

DTI Appointed Competent Body EMC Test Ce ntre, GEC-Marconi Avionics Ltd., Maxwell Building, Donibristle Industrial Park, KY11 5LB Scotland, United Kingdom

Supplementary Information:

The individual components of the product meet relevant international safety standards.

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC, and carries the CE marking accordingly.

South Queensferry, Scotland

Location Date W.R. Pearson / Quality Manager

Europe Contact: Your Loc al Hewlett-Packard Sales and Ser vice Office or Hewlett-Packard GmbH, Department 2Q / Standards Europe Herrenberger Strasse 130, D7030 Boblingen (Fax: +49-7031-143143)

15 December 1998

Declaration of Conformity

according to ISO/IEC Guide 22 and EN45014

Manufacturer’s Name: Hewlett-Packard Ltd. Manufacturer’s Address:

Declares that the product

Product Name

Telecomms Networks Test Division South Queensferry West Lothian, EH30 9TG Scotland, United Kingdom

12Gb/s Bit Error Rate Tester

Model Number: Product Options:

As Detailed in:

Assessed by:

Technical Report Number:6893/2200/CBR, dated 23 September 1997

HP 70843B This declaration covers all options of the above product as detailed in

TCF A-5951-9852-01

Electromagnetic Compatibility (EMC) Technical Construction File (TCF) No. A-5951-9852-01

DTI Appointed Competent Body EMC Test Ce ntre, GEC-Marconi Avionics Ltd., Maxwell Building, Donibristle Industrial Park, KY11 5LB Scotland, United Kingdom

Supplementary Information:

The product conforms to the following safety standards:

EN 61010-1(1993) IEC 1010-1(1990) +A1(1992) +A2(1995) CSA-C22.2 No. 1010.1-93 EN 60825-1(1994) / IEC 825-1(1993)

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC, and carries the CE marking accordingly.

South Queensferry, Scotland

Location Date W.R. Pearson / Quality Manager

Europe Contact: Your Loc al Hewlett-Packard Sales and Ser vice Office or Hewlett-Packard GmbH, Department 2Q / Standards Europe Herrenberger Strasse 130, D7030 Boblingen (Fax: +49-7031-143143)

15 December 1998

WAR NINGS

The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the product. Hewlett-Packard Company assumes no liability for the customer's failure to comply with these requirements.

This is a safety Class 1 instrument (provided with a protective earthing ground, incorporated in the powercord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the instrument is likely to make the instrument dangerous. Intentional interruption is prohibited.

DO NOT operate the product in an explosive atmosphere or in the presence of flammable gasses or fumes. For continued protection against fire hazard, replace the line fuses only with the same type and ratings (type

nA/nV). The use of other fuses or materials is prohibited (where the fuse type is blown rate). Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Proce-

dures involving the removal of covers and shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the equipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless you are qualified to do so.

DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office for service and repair to ensure the safety features are maintained.

DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for service and repair to ensure the safety features are maintained.

If this instrument is not used as specified, the protection provided by the equipment could be impaired. This instrument must be used in a normal condition (in which all means of protection are intact) only.

No operator serviceable parts inside. Refer servicing to qualified personnel. To prevent electrical shock do not remove covers.

CERTIFICATION

Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that organization's calibration facility, and to the calibration facilities of other International Standards Organization members.

WARRANTY

This Hewlett-Packard product is warranted against detects in materials and workmanship for a period of one year from date of shipment. Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes part of) other HP products. During the warranty period, HewlettPackard Company will, at its option, either repair or replace products which prove to be defective.

For warranty service or repair, this product must he returned to a service facility designated by HewlettPackard (HP). Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to HP from another country.

HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when properly installed on that product. HP does not warrant that the operation of the product or software, or firmware will be uninterrupted or error free.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied products or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the products, or improper site preparation or maintenance.

The design and implementation of any circuit on this product is the sole responsibility of the Buyer . HP does not warrant the Buyer's circuitry or malfunctions of HP products that result from the Buyer's circuitry. In addition, HP does not warrant any damage that occurs as a result of the Buyer's circuit or any other detects that result from Buyer-supplied products.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

NOTICE

The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may he photocopied, reproduced, or translated without the prior written consent of the Hewlett-Packard Company. HP assumes no responsibility for the use or reliability of its software on equipment that is not furnished by HP.

Restricted Rights Legend

Use, duplication or disclosure is subject to restrictions as set forth in subdivision (c)(1)(ii) of the Rights in Te chnical Data and Computer Software clause at 52.227-FAR14. Hewlett-Packard Company; 3000 Hanover Street; Palo Alto, California 94304.

Printing History

The Printing History shown below lists all Editions and Updates of this manual and the printing date(s). The first printing of the manual is Edition 1. The Edition number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages to correct the current Edition of the manual. Updates are numbered sequentially starting with Update 1. When a new Edition is created, it contains all the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this printing history page. Many product updates or revisions do not require manual changes and, conversely, manual corrections may be done without accompanying product changes. Therefore, do not expect a one-to-one correspondence between product updates and manual updates.

Edition or Upd ate Date Pa r t Number

Edition 1 Feb 1994 71612-90000 New Edition Mar 2000 71612-90011 Edition 2 Jul 1995 71612.90000 New Edition Mar 2001 71612-90015 New Edition Jun 1998 71612-90007 New Edition Dec 1998 71612-90008

Edition or Upda te Date Pa rt Number

HP 71612 Series of Gb/s Testers

Operating Manual

Contents - Operating Manual

1 General Information

Introduction 1-2 Safety Considerations 1-2

Safety Information 1-2 General 1-3 Safety Symbols 1-4

Options 1-6

Introduction 1-6

Upgrade Options 1-8

Accessories Supplied 1-8

Recommended Accessory List 1-8

Serial Number Information 1-9 Returning Instruments for Service 1-9

Packaging Requirements 1-9 Preparing an Instrument for Shipping 1-10

Precautions 1-11

ESD Precautions 1-11 Static-safe Workstation 1-11 Static-safe Accessories 1-12 Lifting/Carrying the HP 70843 1-12

Using one arm to lift instrument 1-12 Display Cleaning 1-13 Cabinet Cleaning 1-13

How to Update the HP 70843 Firmware 1-13

To Update Control Processor Firmware 1-13 To Update Measurement Processor Firmware 1-14

2 Installation

Introduction 2-2 Preparation for Use 2-3

Initial Inspection 2-3 To Fit an Instrument Hardkey Panel 2-3 Statement of Compliance 2-4 Instruction for cleaning 2-4 Operating Requirements 2-4

Operating and Storage Environment 2-4

Physical Specifications 2-4

Cooling Considerations 2-5

Lifting the HP 70843 2-5

Power Requirements 2-5

Noise Declaration 2-6

Power Cables 2-6

Contents-1

Contents - Operating Manual

Line Voltage Selection 2-7

Instrument (HP 70843) Line Voltage Selector 2-7 Display (HP 70004A) Line Voltage Selector 2-7 Mainframe (HP 70001A) Line Voltage Selector (HP 71612 options UHF/UKB

and UHG/UKB only) 2-8

Line Fuses 2-9

Accessing the HP 70843 Line Fuse 2-9

Accessing the Display (HP 70004A) and Mainframe (HP 70001A) Fuses 2-9 Fuse Ratings 2-9 HP-MSIB Address Switches 2-10

Factory Preset HP-MSIB Addresses 2-10

HP 70843 Address Switches 2-10

HP 70340A Clock Source Module Address Switches 2-11

HP 70341A Clock Source Module Address Switches 2-11

HP 70004A Display Address Switches 2-12 HP-IB Address Switches 2-12

To Change the HP-IB Address 2-12

Factory Preset HP-IB Addresses 2-12 Bench Operation 2-13 Rack Mount Installation 2-13

System Installation 2-14

Accessories 2-14

Cables 2-14

Connectors 2-14

Terminations 2-14 Procedure 2-15

System Verification 2-17

Error Performance Analyzer System Verification 2-17

Selftest at Power-on 2-18 Installing/Removing Modules 2-19

Installing an HP 70340A Clock Source Module into a Display 2-19 Installing an HP 70341A Clock Source Module into a Mainframe 2-20

3 System Overview

Configurations 3-2

System Options 3-2 Additional System Options 3-3 HP 70843 Instrument Options 3-3 Documentation Overview 3-3

Contents-2

Contents - Operating Manual

4 Operating Features and Specifications

Introduction 4-2

Warm-up 4-2 Operating Temperature Specification 4-2 Calibration Interval 4-2

Pattern Generator 4-3

External connections 4-3

Patterns 4-3

PRBS Test Patterns 4-3 Zero Substitution/Variable Mark Density 4-3

Test Patterns 4-3 Zero Substitution 4-4

Variable Mark Density 4-4 User-programmable test patterns 4-4 Alternate test pattern - pattern generator only 4-4 Internal Disk Drive 4-5

Clock Input 4-5

Features 4-5 Specifications 4-5

Data and Data (inverted) Outputs 4-6

Features 4-6

Data output features not controlled by data output softkeys 4-6 Specifications 4-6

Data outputs - main 4-6 Error Add 4-8

Clock and Clock (inverted) Outputs 4-8

Specifications 4-8

Clock outputs - main 4-8

Subrate Clock & Data (inverted) Outputs 4-9

Features 4-9 Specifications 4-9

Trigger Output 4-9

Features 4-9 Pattern Mode 4-10

PRBS 2^31-1, 2^23-1, 2^15-1, 2^10-1, 2^7-1 4-10

Alternate pattern 4-10

All other patterns 4-10 Divided Clock Mode 4-10 Interface 4-10

Auxiliary Input 4-10

Alternate Pattern Selected 4-11 Data Output Inhibit (Gating mode) 4-11

Contents-3

Contents - Operating Manual

Interface 4-11

To Select Oneshot Mode 4-11 To Select Alternating Mode 4-11

Error Inject Input 4-12

Interface 4-12

Status Indicators 4-12

Pattern Generator indicators 4-12 Error Detector indicators 4-12 General instrument indicators 4-12

Rear Panel Switches 4-12 Error Detector 4-13

External connections 4-13

Clock Input (error detector) 4-13

Features 4-13 Specifications 4-13

Data Input 4-14

Features 4-14 Specifications 4-14

Pattern Trigger Output (error detector) 4-14

Features 4-14 Pattern Mode 4-15

PRBS 2^31-1, 2^23-1, 2^15-1, 2^10-1, 2^7-1 4-15

All other patterns 4-15 Divided Clock Mode 4-15 Specifications 4-15

Errors Output 4-15

Features 4-15 Interface 4-15

Gating Input 4-16

Interface 4-16

Automatic Clock-to-Data Alignment 4-17

Introduction 4-17 Definition 4-17

Eye Width 4-17 Automatic 0/1 Threshold Center 4-18

To perform a 0/1 Threshold Centering 4-18 Data Input 0/1 Threshold 4-18

Introduction 4-18

Measurements 4-18

Error Analysis 4-19 Power-loss Seconds 4-19 Sync-loss Seconds 4-20 Frequency Measurement 4-20

Contents-4

Contents - Operating Manual

Result Logging 4-20

Error Location (HP 71612 or HP 70843 Option UHJ) 4-20

Bit BER 4-20

Measurements 4-20 Error location capture 4-20 Block BER 4-21

Measurement Period 4-22

Measurement Period Features 4-22 Gating modes 4-22 Gating Period Definition 4-23 Burst gating 4-23

Pattern Synchronization 4-24

Synchronization Modes 4-24 Sync Gain Loss Criteria 4-24 Synchronization Times 4-24

Audible Output 4-24 Logging to External Printer 4-25

Functions 4-25

To Set Up Your Own Display of Results or Status Information 4-25

Procedure 4-25

Select and View the User's Page 4-25

To Build Your Own User's Page 4-26

5 Getting Started

Using the HP 70004A Display 5-2

Key Notation 5-2 Display Fixed Label Keys 5-3 Instrument Hardkeys 5-3 Parameter Control Keys 5-3 Instrument Softkeys 5-3

Softkeys and Windows Color Coding 5-3

Multi-State Functions 5-3 To Set Up the Display 5-4 Display Functions 5-4 Instrument Functions 5-5

System Turn-On 5-6

Introduction 5-6

Making Your First Measurement 5-7

Introduction 5-7 Procedure 5-7 Initial Switch On 5-7

Initial settings 5-7

Contents-5

Contents - Operating Manual

Perform a data eye measurement 5-8

Eye Edge Threshold 5-9

Automatic 0/1 Threshold Center 5-9 To Select a Measurement Gating Period 5-9 To Start a Measurement 5-9 Viewing Results and Introducing Errors into the System 5-9

To Select a Fixed Error Rate 5-10

To Add External Errors 5-10

Start a New Measurement 5-10

To View Measurement Results 5-10

To Verify/Demonstrate the Capture Error Feature (Option UHJ

instruments) 5-11

Procedure 5-11

6 Softkey Menu Maps

Introduction 6-2

Menu Map when MENU hardkey Selected 6-2 Menu Map when Result Pages hardkey Selected 6-3 Menu Map when Pattern hardkey Selected 6-3 PRBS Menu Map 6-4 Zerosub Menu Map 6-4 Markdensity Menu Map 6-5 Ram User Menu Map 6-5 Disk User Menu Map 6-6 Disk Utils Menu Map 6-6 Edit Ram User Menu Map 6-7 Edit Disk User Menu Map 6-7 Edit User Menu Map 6-8 Data Output Menu Map 6-8 Clock Output Menu Map 6-9 Error Add Menu Map 6-9 Subrate Outputs Menu Map 6-10 Trigger & Setup Menu Map 6-11 Miscellaneous Menu Map 6-12 Input & Eye Menu Map 6-12 Sync & Audio Menu Map 6-13 Gating Menu Map 6-14 Logging Menu Map 6-15 Error Location Menu Map 6-15 Build User Page Menu Map 6-16 Build User Page Pattern & Trigger Menu Map 6-16 Build User Page Data Output Menu Map 6-17

Contents-6

Contents - Operating Manual

Build User Page Clock Output Menu Map 6-17 Build User Page Error Add Subrate Data/Clock Menu Map 6-18 Build User Page Input and Sync Menu Map 6-18 Build User Page Gating and Error Location Menu Map 6-19 Build User Page Logging Menu Map 6-19 Build User Page Main Results Menu Map 6-20 Build User Page Other Results Menu Map 6-20 Build User Page Interval Results Menu Map 6-21 Build User Page G.821 Results Menu Map 6-21 Build User Page Eye Results Menu Map 6-22 Build User Page Big Results Menu Map 6-22

7 Softkey Menu Descriptions

Introduction 7-2

Softkey Menus 7-2

Softkeys requiring numeric entry 7-2 Softkey Labelling 7-2

Softkeys Color Coding 7-2 Primary Softkeys 7-3 Path Selection 7-3

Pattern Softkey Menus 7-4

Path 7-4 Description 7-4 Edit User Pattern Menu (RAM or disk) 7-6

Path 7-6

Description 7-6 disk Utils 7-9

Path 7-9

Description 7-9 Alternate Pattern Control 7-9

Path 7-9

Description 7-9

Data Output Menu 7-11

Path 7-11

Description 7-11

Clock Output Menu 7-13

Path 7-13

Description 7-13

Error Add Menu 7-14

Path 7-14

Description 7-14

Contents-7

Contents - Operating Manual

Subrate Outputs 7-15

Path 7-15

Description 7-15 Subrate Data Softkeys 7-15 Subrate Clock Softkeys 7-15

Trigger & Setup Menu 7-16

Path 7-16

Description 7-16 Pattern Generator Trigger Output 7-16 Error Detector Trigger Output 7-17 Error Detector Errors Output 7-17 Save and Recall Instrument Setup 7-18

Misc Menu 7-18

Path 7-18

Description 7-18

Result Pages Menu 7-22

Path 7-22

Description 7-22 Main Results Display 7-22 Other Results Display 7-23 Intervl Results 7-23 G.821 Results 7-24 Eye Results 7-24 User's Page 7-24

Build User-Page Menu 7-25

Path 7-25

Description 7-25 Pattern & Trigger USER'S PAGE menu 7-26 Data & Clock Output USER'S PAGE menus 7-26 Err-add Subrate USER'S PAGE menu 7-26 Input & Sync USER'S PAGE menu 7-27 Gating Err-loc USER'S PAGE menu 7-27 Logging USER'S PAGE menu 7-27 Main results USER'S PAGE menu 7-28 Other results USER'S PAGE menu 7-29 Interval results USER'S page menu 7-30 G.821 results USER'S PAGE menu 7-31 Eye results USER'S PAGE menu 7-31 BIG results USER'S PAGE menu 7-31

Input & Eye Menu 7-32

Path 7-32

Description 7-32

Contents-8

Contents - Operating Manual

Sync & Audio Menu 7-34

Path 7-34 Description 7-34

Gating Menu 7-35

Path 7-35 Description 7-35 Gating after a Power Loss 7-35

Error Location 7-37

Path 7-37 Description 7-37

Logging Menu 7-38

Path 7-38 Description 7-38

8 User Patterns and Disk Operation

Define, Edit and Store User Defined Patterns 8-2

Introduction 8-2 Basic Editor Operation 8-2

The Editor 8-3

Editor Features 8-3

Pattern Stores 8-3

Current Pattern 8-3

Choosing a Pattern 8-4

RAM-Based File Catalog 8-4

Disk-Based File Catalog 8-4 User Pattern Memory 8-5 Exiting the Editor By Mistake 8-5

Procedure 8-5

How to Set Up and Edit Your Own User Pattern 8-6

Introduction 8-6 To Edit User Patterns 8-6

Procedure 8-6

Set Pattern Length 8-7

Insert/Replace Bits in the Pattern 8-7

Delete Bits 8-7 To Save a Pattern 8-8

Procedure 8-8 To Load a Pattern Store Into the Editor 8-8

Procedure 8-8 To Load a PRBS or User Pattern into the Editor 8-9

Contents-9

Contents - Operating Manual

To Load a Block of Data (PRBS) 8-9

Procedure 8-9 To Edit Zero Substitution 8-9 To Edit Mark Density 8-9

To Load a User Pattern Into the Editor 8-10

Procedure 8-10 Load Copies of User Patterns 8-10

To Save a Block of Data 8-11

Procedure 8-11

To Delete a Block of Data 8-12

Procedure 8-12 Alternate Patterns 8-12 To Select Alternate Pattern Control 8-13

Procedure 8-13 To Generate an Alternate Pattern 8-13

Procedure 8-13

To Load a 2^10 PRBS into Half B of the Alternate Pattern 8-15

To Save the Alternate Pattern 8-15

Disk Operation 8-16

Introduction 8-16 Running out of Disk Space 8-16 Unable to Write to Disk 8-17 Disk Organization 8-17 Header String Length 8-18 Header String 8-19 Revision Code 8-19 Pattern Index 8-20 Pattern Label String Length 8-20 Pattern Length 8-20 Trigger Bit 8-20 Type of Pattern 8-20 Pattern Contents 8-20

9 Preset Instrument Configurations

Introduction 9-2

PRESET Instrument Configurations 9-2 Preset 1 Configuration 9-8 Preset 2 Configuration 9-10

User Pattern Default Settings 9-11

Contents-10

Contents - Operating Manual

10 Data Logging

Introduction 10-2

Recommended Printers 10-2 HP-IB (IEEE-488) to Centronics Printer Interface Converter 10-2 Printer Interface Cables 10-3 Printer Address 10-3 Selecting Logging Functions 10-3 To Log Results to an HP-IB External Printer 10-4

Connecting a Printer 10-4 To Log Results 10-4

To Output Results via HP-IB to a Controller 10-4

Procedure 10-4 When Measurement Results can be Logged 10-4 Logging During Gating 10-5

Logging Trigger Threshold 10-5

Results Logged During Gating 10-5 To Log Results During Gating 10-5

Procedure 10-5 End of Measurement Period Logging 10-6

End of Measurement Logging Trigger 10-6 To Log Results at the End of the Measurement Period 10-6 Log On Demand 10-7 Logging Alarms 10-7

To Log Alarms 10-7 Logging Squelch 10-7

To Squelch or not to Squelch 10-7 Results Storage 10-8

Results Storage when Logging is Switched On 10-8

11 Performance Tests

Introduction 11-2

Test Equipment Required 11-2 Parametric Testing 11-3

Preliminary setup 11-3 Data Risetime 11-4 Data Falltime 11-4 Data Jitter 11-5 Data (inverted) Risetime 11-6 Data (inverted) Falltime 11-6 Data (inverted) Jitter 11-7 Clock Risetime 11-8 Clock Falltime 11-8

Contents-11

Contents - Operating Manual

Clock (inverted) Risetime 11-9 Clock (inverted) Falltime 11-9

Pattern Generator Tests 11-10

Clock Input Minimum Level Alarm 11-10 Clock Out and Clock (inverted) Out Amplitude and Frequency 11-11 Data Out and Data (inverted) Out Amplitude 11-13 Data Delay 11-15 Pattern Generator Trigger Output 11-17 Subrate Clock Out 11-18 Parallel Data/4 Outputs 11-20 Auxiliary Input (Alternate word switchover) 11-22 Error Inject (internal and external) 11-23

Error Detector Performance Tests 11-25

Clock Input Level Alarm 11-25 Pattern Sync Output 11-26 Gating Input & Error Measurement 11-27 Error Out 11-27 Audible Error Output 11-28 Data 0/1 Threshold Auto/Manual Test 11-28 Clock/Data Align 11-29 Data Input Sensitivity 11-29

Pattern Verification 11-31

Floppy Disk Read/Write 11-31 Residual Error Rate Test 11-31

To Verify/Demonstrate the Capture Error Feature (Option UHJ

instruments) 11-32 HP 70843 option UHF Line Final Test Data 11-33 HP 70843 Line Final Test Data 11-37

12 Error Messages

Introduction 12-2 Non-Permanent Errors 12-3 Permanent Errors 12-9

13 Troubleshooting

Entry Chart 13-2 System Indicators 13-3

Error Indicators 13-4

Volt/Temp Troubleshooting 13-5 HP-MSIB Troubleshooting 13-6 MMS Error Messages 13-8

Contents-12

Contents - Operating Manual

Error Reporting 13-8

Clock Loss Troubleshooting 13-9

Clock Source Output 13-9

Data Loss Troubleshooting 13-9 Sync Loss and Errors Troubleshooting 13-10 Communication Troubleshooting 13-10

14 Appendix A:

Measurement Definitions

Measurement Definitions A-2

Error Measurements A-2

Error Count A-2 Delta Error Count A-2 Error Ratio A-2 Delta Error Ratio A-2 Errored Intervals A-2 Error Free Intervals A-2

Error Analysis A-2

% Unavailability A-2 % Availability A-3 % Errored Seconds A-3 % Severely Errored Seconds A-3

% Degraded Minutes A-3 Power Loss Seconds A-3 Sync-loss Seconds A-3 Error Location Analysis (Option UHJ instruments) A-3

15 Appendix B:

Operating Notes

Setting Error Detector Sync Thresholds B-2

Introduction B-2 Setting Sync Thresholds B-2 Clock-to-Data Alignment Failure B-2

Pattern Generation B-3

Introduction B-3

Pattern Editor and Subrate Data B-4

Pattern Lengths Divisible By Four B-4 Pattern Lengths Not Divisible By Four B-4 Subrate Output Pattern Change with Trigger Bit Position B-4

Contents-13

1 General Information

Gen e ral Informa tion Introduction

Introduction

This chapter contains general information about the HP 71612 Series System and is divided into the following sections:

Safety Considerations Options Accessories Supplied Serial Number Information

Returning Instruments for Service

Precautions

Updating Firmware

Safety Considerations

General Safety Information, Safety Symbols Lists all the options available with your system. Lists the accessories supplied with your system. Explains the Hewlett-Packard serial numbering

system. Contains information on how to re turn an instrument

to Hewlett-Packard for service. Highlights electrostatic discharge procedures and

accessories available. This section also contains information on lifting or carrying the HP 70843 and on cleaning the display.

Provides a procedure for updating the HP 70843 firmware.

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The instrument and manual should be reviewed for safety markings and instructions before operation. Also read the Warnings page at the front of this manual.

Safety Information

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Hewlett-Packard Company assumes no liability for the customer's failure to comply with these requirements.

This is a Safety Class I instrument (provided with a protective earthing ground, incorporated in the powercord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the instrument is likely to make the instrument dangerous. Intentional interruption is prohibited.

1-2

General

Gen e ral Informa tion Safe ty Con s id e ra tions

DO NOT

operate the product in an explosive atmosphere or in the presence of flammable

gasses or fumes.

DO NOT

use repaired fuses or short-circuited fuseholders. For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.

DO NOT

perform procedures involving cover or shield removal unless you are qualified to do so. Operating personnel must not remove equipment covers or shields. Procedures involving the removal of covers and shields are for use by service-trained personnel only.

DO NOT

service or adjust alone. Under certain conditions, dangerous voltages may exist even with the equipment switched off. To avoid dangerous electrical shock, service personnel must not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

DO NOT

operate damaged equipment. Whenever it is possible that the safety protection features built into this product have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office for service and repair to ensure the safety features are maintained.

DO NOT

substitute parts or modify equipment. Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for service and repair to ensure the safety features are maintained.

1-3

Gen e ral Informa tion Safe ty Con s id e ra tions

Safety Symbols

The following symbols on the instrument and in the manual indicate precautions which must be taken to maintain safe operation of the instrument.

The Instruct ion Do cumen tat ion Symbol . The produc t is marked with this symbol when it is necessary for the user to refer to the instructions in the supplied documentation.

Indicates the field wiring terminal that must be connected to earth ground before opera ting the equip ment - protects against electri cal shock in case of fault.

Frame or chassi s ground terminal - typically connects to the equipment ’s metal frame.

Alternating current (ac)

Direct current (dc)

Indica tes hazardous v oltages

Warning denotes a hazard. It calls attention to a procedure, which if not correctly performed or adhered to could result in injury or loss of life. Do not proceed beyond a warning note until the indicated conditions are fully understood and met.

Caution denot es a hazard. It calls attenti on to a procedure , which if not correctl y performed or adhered to could result in damage to or destruction of the instrument. Do not proceed beyond a warning note until the indicated conditions are fully underst ood and met.

The CE mark shows that the product complies with all relevant European legal Directi ves .

1-4

Gen e ral Informa tion Safe ty Con s id e ra tions

This is a symbol of an Industrial Scientific and Medical Group 1 Class A product.

The CSA mark is a registered trade mark of the Canadian Standards Associat ion. Indi cate s a functional earth termin al.

Indica tes a functiona l earth terminal .

The recycling symbol.

The dispose of proper ly symbo l.

1-5

Gen e ral Informa tion Options

Options

Introduction

The HP 12 Gb/s BERT products offer a range of product options to suit user applications. There are two standard core products (HP 71612 and HP 70843) each having a set of user options. The core products cannot be ordered or supplied on their own; they must be ordered with an option. They are as follows:

• HP 71612: comprises an HP 70004A display and an HP 70843 product base.

• HP 70843: comprises a Hewlett-Packard MMS system II cabinet with PSU and control hardware/firmware functions for a BERT, pattern generator or error detector option. HP 70843 options are provided for users who may not require an HP 70004A display or who wish to operate the instrument remotely via HP-IB.

The following tables list the options available for the HP 71612 and HP 70843 core products.

HP 71612 Options

Product Option Description Elemen ts In clu ded

Display Pattern

Generator

71612 UHF 12 Gb/s error performance

analy ze r (B ER T ) 71612 UHG 12 G b/s patter n gener ator yes y es no yes 71612 UHH 12 Gb/s error detector

system

yes yes yes yes

yes no yes no

Error Detector

Cloc k Source

1-6

Gen e ral Informa tion Options

HP 71612 Options continued

Product Option Descrip ti on Elements Inc lud ed

Mainframe Clock Source

Extension Mo dule

71612 UKB extend lowest frequency to 0.1 Gb/s yes yes 71612 UHJ add error location analysis to option

UHF or UHH

71612 UKC delete clock source from option

UHF or UHG 71612 OB1 extra set of HP 71612 manuals 71612 1CM r ack moun t kit; for instru ment

without handles fitted 71612 1CP rack moun t kit; for instru ment with

handles fitted

HP 70843 Options

Product O ption Description Elements Included

Display Pattern

Generator

70843 UHF 12 Gb/s error performance

analyzer (BERT)

70843 UHG 12 Gb/s pattern generator no yes no no

no yes yes no

Error Dete ctor

Clock Source

70843 UHH 12 Gb/s error detector no no yes no 70843 UHJ add error location analysis

to option UHF or UHH

70843 OB1 extra set of HP 71612

manuals

70843 1CM rack mount kit; for

instrument without handles fitted

70843 1CP rack mount kit; f or

instrument with handles fitted

1-7

Gen e ral Informa tion Accessories Supplied

Upgrade Options

The following options upgrade HP 71612 and HP 70843 option UHG pattern generators and option UHH error detectors to full BERT capability. Both upgrades can only be carried out at the manufacturing division.

HP 15807A Factory Upgrade to 12 Gb/s BERT

Product Option Description

15807A 001 add pattern generator 15807A 002 add error detector

Accessories Supplied

The accessories supplied with your system are listed below:

• Two HP-MSIB cables.

• Line power cable. (3 off when an HP 70001A mainframe is supplied.)

• 8 mm hex-ball driver.

• 4 off SMA to SMA test cables.

• 1 off N-SMA adapter.

• 5 off APC-3.5 mm connector savers.

• 2 off APC-3.5 mm male-female adapter.

• 7 off 50Ω SMA terminations.

Recommended Accessory List

The following items are not supplied with your instrument but are recommended accessories.

• APC-3.5 mm cables.

• APC-3.5 mm attenuators.

• APC-3.5 mm 50Ω terminations.

• Torque wrench for APC-3.5 mm.

1-8

Gen e ral Informa tion Serial Number Information

Serial Number Information

Attached to each element in your system is a serial number plate. A typical serial number is in the form XXXXUXXXXX. It is in two parts; the first four digits and the letter are the serial prefix and the last five are the suffix, the letter designates the country of origin - U is the United Kingdom. The prefix is the same for identical elements, it only changes when a change is made to an element in your system. The suffix however, is assigned sequentially and is different for each element. The contents of this manual apply to the elements with the serial number prefix(es) listed under

A system manufactured after the printing of this manual may have a number prefix that is not listed on the title page. The unlisted serial number prefix indicates the system is different from those described in this manual. The manual for this new element is accompanied by a

information

In addition to change information, the supplement may contain information for correcting errors in the manual. To keep this manual as current and accurate as possible, Hewlett-Packard recommends that you periodically request the latest Manual Changes supplement. The supplement for this manual is identified with the manual print date and part number, both of which appear on the manual title page. Complementary copies of the supplement are available from Hewlett-Packard. For information concerning a serial number prefix that is not listed on the Manual Changes supplement, contact your nearest Hewlett-Packard office.

that explains how to adapt the manual to the new element.

Manual Changes

SERIAL NUMBERS

supplement. This supplement contains

on the title page.

change

Returning Instruments for Service

This section explains how you return an instrument to Hewlett-Packard for servicing.

Packaging Requirements

Instruments can be damaged as a result of using packaging materials other than those specified. Never use styrene pellets as packaging material. They do not adequately cushion the instrument nor prevent it from shifting in the carton. They also cause instrument damage by generating static electricity.

1-9

Gen e ral Informa tion Returni ng Instruments fo r Service

Preparing an Instrument for Shipping

1. Fill out a blue repair tag (located at the front of this manual) and attach it to the instrument. Include any error messages or specific performance data related to the problem. If a blue tag is not available, the following information should be noted and sent with the instrument:

• Type of service required.

• Description of the problem.

• Whether problem is constant or intermittent.

• Name and phone number of technical contact person.

• Return address.

• Model number of returned instrument.

• Full serial number or returned instrument.

• List of any accessories returned with the instrument.

2. Pack the instrument in the appropriate packaging materials. Original shipping or equivalent materials should be used. If the original or equivalent material cannot be obtained, follow the instructions below:

CAUTI ON

Inappropriate packaging of the instrument may result in damage to the instrument during transit.

• Wrap the instrument in anti-static plastic to reduce the possibility of damage caused

by ESD.

• Use a double-walled, corrugated cardboard carton of 159 kg (350 lb) test strength.

CAUTI ON

If you are shipping a complete system, remove the module(s) from Display and Mainframe, individually pack each element, then ship them to Hewlett-Packard.

• The carton must be large enough to allow 3 to 4 inches on all sides of the instrument

for packing material and strong enough to accommodate the weight of the instrument.

• Surround the instrument with 3 to 4 inches of packing material, to protect the

instrument and prevent it from moving in the carton.

• If packing foam is not available, the best alternative is S.D.-240 Air Cap

Sealed Air Corporation (Commerce, California 90001). Air Cap

looks like a

from

plastic sheet filled with air bubbles.

• Use the pink (anti-static) Air Cap

to reduce static electricity. Wrapping the instrument several times in this material will protect the instrument and prevent it from moving in the carton.

3. Seal the carton with strong nylon adhesive tape.

4. Mark the carton FRAGILE, HANDLE WITH CARE.

5. Retain copies of all shipping papers.

1-10

Gen e ral Informa tion Precautions

Precautions

ESD Precautions

Electrostatic discharge (ESD) can damage or destroy electronic components. All work on electronic assemblies should be performed at a static-safe workstation.

NOTE

When the instrument is subjected to air discharges above 2 kV, as detailed in standard IEC 1000-4-2 (1995), degradation in performance may be observed in the form of bit errors.

Static-safe Workstation

A typical static-safe workstation is illustrated in the following diagram. There are two types of ESD protection:

• Wrist-strap (with >1 MΩ isolation to ground) with table mat.

• Heel-strap (with >1 MΩ isolation to ground) with conductive floor mat.

These two types must be used together to ensure adequate ESD protection. Isolation to ground must be provided for personnel protection.

1-11

Gen e ral Informa tion Precautions

Static-safe Accessories

The following table lists the accessories that may be ordered through any Hewlett-Packard sales and service office.

HP Part Number Description

9300- 0797 3M static cont rol mat 0.6 m x 1.2 m (2 ft x 4 ft) and 4.6 m (15 ft) of ground

wire. (The wrist-st r ap and wrist-strap cord are not included. They must be

ordered separ ately.) 9300- 0980 Wrist-st rap cord 1.5 m (5 ft). 9300- 1383 Wrist-st rap, color black, stainl ess steel , has four adjustable links and a

7 m m post-ty pe connect ion. 9300-1169 ESD heel-strap (reusable 6 to 12 months). *92 175A Black, hard surface, stat ic control mat, 1.2 m x 1.5 m (4 ft x 5 ft) *92 175B Brown, soft sur face, stat ic control mat, 1.2 m x 2.4 m (4 ft x 8 ft) *92 175C Small, black, hard surface, static control mat, 0.9 m x 1.2 m (3 ft x 4 ft) *92 175T Table-top static control mat, 58 cm x 76 cm (23 in x 30 in) *92 176A Natural color anti-st ati c carpet, 1. 2 m x 1.8 m (4 ft x 6 ft) *92 176B Natural color anti-st ati c carpet, 1. 2 m x 2.4 m (4 ft x 8 ft) *92 176C Russet color anti-static carpet , 1.2 m x 1.8 m (4 ft x 6 ft) *92 176D Russet color anti-static carpet , 1.2 m x 2.4 m (4 ft x 8 ft)

*Can also be ordered by calling HP DIRECT Phone (800) 538 8787.

Lifting/Carrying the HP 70843

Use the handle on the side of he instrument for lifting the HP 70843. Before attempting to lift or carry the instrument consider the following basic lifting techniques to help avoid personal injury.

Using one arm to lift instrument

• BRACE your body with the opposite arm, if possible.

• Reach for the instrument - bend your knees and waist, and keep your back straight.

• GRASP the instrument firmly - using the handle.

• LIFT with your legs, using the free arm for balance.

• KEEP your shoulders level - switch hands regularly.

1-12

Gen e ral Informa tion How to Update the HP 70843 Firmware

Display Cleaning

To avoid damaging the coating on the display, use a thin-film cleaner such as Hewlett-Packard Video Clean Kit (HP part number 92193). The kit includes an nonabrasive cleaning cloth.

CAUTI ON

Hand and laboratory paper towels are abrasive, if these are used they may damage the coating on the display.

Cabinet Cleaning

To clean the instrument cabinet: Use a soft, clean cloth to clean the front-panel and side covers.

How to Update the HP 70843 Firmware

CAUTI ON

The HP 70843 has two processor systems, a Control Processor and a Measurement Processor. The firmware for either processor can be updated using the instrument floppy disk drive. The first part of the update process is as follows:

Do not attempt to update instrument firmware unless advised by Hewlett-Packard and supplied with an appropriate firmware update disk.

1. Power up instrument and HP 70004A display.

2. Press key on HP 70004A display under screen.

3. Press softkey (bottom left-hand softkey).

USER

misc

4. Insert firmware update disk into instrument.

5. Press softkey.

update frmware

Now either update the Control Processor or Measurement Processor:

To Update Control Processor Firmware

1. Press .

2. Confirm operation by pressing softkey (top left-hand). Wait for update

3. Power cycle.

UpdCntlAppl

UPDATE YES

to complete - this can take several minutes. During the update the HP-IB indicator LEDs light from left to right and the end of a successful update is indicated by the green MSIB ACT LED flashing. If the update is unsuccessful the red MSIB ERR LED flashes.

1-13

Gen e ral Informa tion How to Update the HP 70843 Firmware

To Update Measurement Processor Firmware

1. Press .

2. Confirm operation by pressing softkey (top left-hand).

UpdMeasAppl

UPDATE YES

3. Wait for update to complete, at the end of the update a message will appear at the bottom of the screen requesting a power cycle.

4. Power cycle.

1-14

2 Installation

Installation Introduction

Introduction

This chapter enables you to install your system ready for use. The information is presented under the following headings:

Preparation for Use:

System Installation:

System Verification:

Selftest at Power-on:

Installing/Removing Modules:

WARNIN G

If this instrument is not used as specified, the protection provided by the equipment could be impaired. This instrument must be used in a normal condition only (in which all means for protection are intact).

Provides information you should read before you install your system. It contains information on initial inspection, power requirements, address switches and rack mount kits.

Shows you how to install your system. As you progress through the procedure, you will be directed to other relevant information.

Describes how you power-on and verify correct system installation.

Details the instrument status during selftest at power-on.

Describes how you install a clock source module into a Display and Mainframe.

2-2

Installation Preparation for Use

Preparation for Use

This section should be read before you install your system. It contains the following:

• Initial Inspection

• Operating Requirements

• Line Voltage Selection

•Line Fuses

• Power Cables

• HP-MSIB Address Switches

• HP-IB Address Switches

• Bench Operation

• Rack Mount Kits

Initial Inspection

WARNIN G

T o avoid hazardous electrical shock, do not perform electrical tests when there are signs of shipping damage to any portion of the outer enclosure (covers, panels, meters).

Inspect the shipping container for damage. If the shipping container or cushioning material is damaged, it should be kept until the contents of the shipment have been checked for completeness and the elements in your system have been checked both mechanically and electrically. Procedures for checking the electrical operation are given starting on page 11-1 of this manual.

If any element in your system appears damaged or is defective, contact the nearest Hewlett-Packard service office. Hewlett-Packard will arrange for repair or replacement of the equipment without waiting for a claim settlement. Retain the shipping materials for the carrier to inspect.

Undamaged shipping materials should be kept. Original HP or equivalent shipping materials are required for system or module re-shipment, as substandard packaging may result in damage. Refer to

Returning Instruments for Service

on page 1-9 for information

on re-shipment.

To Fit an Instrument Hardkey Panel

On all HP 71612 systems, the instrument hardkey panel is fitted to the display at the factory. For HP 70843 orders where the user already has an HP 70004A display, refer to

2-3

Installation Preparation for Use

page 2-11 of the HP 70004A Display Installation and Verification manual (part number 70004-90005) for advice on fitting the instrument hardkey panel.

Statement of Compliance

This instrument has been designed and tested in accordance with LEC Publication 1010-1+A1:1992 Safety requirements for Electrical Equipment for Measurement. Control and Laboratory Use, and has been supplied in a safe condition. The instruction documentation contains information and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition.

Instruction for cleaning

To clean the instrument cabinet: Use a soft, clean damp cloth to clean the front-panel and side covers.

Operating Requirements

Operating and Storage Environment

This instrument is designed for Indoor use only.

The module may be operated at temperatures from 5

C to 35oC at altitudes up to 3,000 m

(10,000 ft.) The module may be operated in environments up to 95% relative humidity to

C, but it should be protected from temperature extremes which may cause

40 condensation. To ensure adequate cooling do not obstruct air vents in the instrument cabinet.

CAUTI ON

This instrument is designed for use in Installation Category II and Pollution Degree 2 per IEC 1010 and 644 respectively.

Physical Specifications

The physical dimensions and weight of each element in your system are as follows:

Table 2-1 Dimensions and weight

Dimensions & Weight HP 70843 HP 70004A + HP 70340A

Height 223 mm 223 mm Width 426 mm 426 mm Depth 500 mm 500 mm Weight <30 kg <30 kg

2-4

Installation Preparation for Use

Cooling Considerations

The HP 70843 12 Gb/s BERT will operate at up to 40

optimum performance is obtained close to 25

C ambient temperature.

C ambient temperature but

In use it is important to make sure there is no obstruction to airflow through the instrument. Cooling air is taken in on the right-hand side and is blown out through the lefthand side of the instrument, looking from the front. If this airflow is obstructed the performance and reliability of the instrument will be reduced.

In the rack-mounted system it is particularly important to make sure the airflow is not obstructed. For example, cables in the side of the racks can obstruct the airflow. Also

make sure the input air temperature is not increased above 40

C by other instruments in the rack. If forced ventilation is used in a rack the air pressure on both sides of the instrument must be the same for the instrument cooling to operate correctly.

Lifting the HP 70843

Use the handles on the side of the instrument for lifting or carrying the HP 70843. Before attempting to lift or carry the instrument consider the following basic lifting techniques to help avoid personal injury.

• BRACE your body with the opposite arm, if possible.

• Reach for the instrument - bend your knees and waist, and keep your back straight.

• GRASP the instrument firmly with both hands

• LIFT with your legs.

• KEEP your shoulders level.

Power Requirements

The line voltage requirements for the HP 70843 error performance analyzer and HP 70004A display are as follows:

115 V line operation: 230 V line operation:

90 to 135 V ac, 47 to 66 Hz 180 to 264 V ac, 47 to 66 Hz

The maximum power consumption is as follows:

HP 70843: HP 70004A:

850 VA typical

350 VA typical

2-5

Installation Preparation for Use

WARNIN G This is a Safety Class 1 instrument (provided with a protective

earthing ground, incorporated in the powercord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor inside or outside of the instrument is likely to make the instrument dangerous. Intentional interruption is prohibited.

Noise Declaration

LpA<70db am Arbeitsplatz (operator position) normaler Betrieb (normal position) nach DIN 45635 pt.19 (per ISO 7779)

Power Cables

The display and error performance analyzer are each equipped with a three-wire power cable. When connected to a properly grounded power outlet, this cable grounds the instrument case. The power cable shipped with each instrument depends on the country of destination. The plug configuration and the power cable part numbers are listed below. If the appropriate power cable(s) are not supplied with your system or are damaged, notify the nearest Hewlett-Packard sales and service office and replacement(s) will be provided.

The color code used in each power cable is given below:

Brown

Line: Neutral: Ground:

CAUTI ON

Blue Green/yellow

Always use the three-prong ac power cord supplied with this instrument. Failure to ensure adequate earth grounding by not using this cord may cause instrument damage.

2-6

Installation Preparation for Use

Line Voltage Selection

Instrument (HP 70843) Line Voltage Selector

There is no Line Voltage Selector switch on the HP 70843. The instrument line input circuits are auto-ranging and will operate at any voltage within the specified voltage range (90 to 135 and 180 to 264 volts). The Line Input module (on the rear panel) incorporates an ON/OFF switch - the `0' position is the OFF position. Refer to the paragraph on Line Fuses on page 2-9 for advice on replacing fuses.

NOTE

WARNIN G

See page 2-9 for fuse ratings for 115 V ac and 230 V ac operation.

If this instrument is to be energized via an external autotransformer for voltage redu ction, make s ure th at i ts common terminal is connected to a neutral (earthed pole) of the power supply .

CAUTI ON

This instrument has an autoranging line voltage input, be sure the supply voltage is within the specified range.

Display (HP 70004A) Line Voltage Selector

CAUTI ON

Before you conne ct the pow er cable t o the di splay , c heck that t he LINE VOLTAGE SELECTOR switch is set for the correct line voltage source. If the wrong voltage is selected, one of the following may happen: If 115 V line operation is selected and you connect to a 230 V ac line power source, the fuse may blow. If 230 V line operation is selected and you connect to a 115 V ac line power source, the instrument will not power-on correctly.

2-7

Installation Preparation for Use

The LINE VOLTAGE SELECTOR slide switch is located through a slot in the left sidepanel.

Mainframe (HP 70001A) Line Voltage Selector (HP 71612 options UHF/UKB and UHG/UKB only)

CAUTI ON

Before you connect the power cable to the mainframe, check that the LINE V OLT A GE S ELE CT OR swit ch i s se t fo r the co rrec t l in e volta g e source. If the wrong voltage is selected, one of the following may happen: If 115 V line operation is selected and you connect to a 230 V ac line power source, the fuse may blow. If 230 V line operation is selected and you connect to a 115 V ac line power source, the instrument will not power-on correctly.

The LINE VOLTAGE SELECTOR slide switch is located through a slot in the bottom panel (the switch is set for 115 V operation in the diagram below).

2-8

Installation Preparation for Use

Line Fuses

The line fuses of the instrument, display and mainframe are located in the line-module housings on the rear panel.

Accessing the HP 70843 Line Fuse

1. Ensure no power cable is connected to the line-module housing.

2. Use a screwdriver to lever open the fuse holder. There are two fuses in the fuse holder

(one for 115V operation and one for 230V operation).

Accessing the Display (HP 70004A) and Mainframe (HP 70001A) Fuses

The display and mainframe use similar line-module housings. To access the fuses:

1. Ensure no power cable is connected to the line-module housing.

2. Use a screwdriver to lever open the fuse holder. A spare line fuse is located inside the

fuse holder.

Fuse Ratings

The fuse ratings and the part numbers for 115 V ac and 230 V ac operation are listed below:

• HP 70843: 115 V operation - F 12 A, 250 V, part number 2110-0051

• HP 70843: 230 V operation - M 7 A, 250 V, part number 2110-0326

• The Display and Mainframe fuse ratings are 6.3 A, 250 V (HP 2110-0703) for both 115

and 230 V ac operation.

2-9

Installation Preparation for Use

HP-MSIB Address Switches

The HP-MSIB address of an HP 70843 error performance analyzer is factory preset to row 0, column 18. Both error detector and pattern generator share the same HP-MSIB address.

If you wish to change the HP-MSIB address, ensure you are fully aware of the HP-MSIB address protocol.

Factory Preset HP-MSIB Addresses

The factory preset HP-MSIB addresses (row, column) are listed below:

HP 70004A display: 0, 20 HP 70843 error performance analyzer: 0, 18* HP 70340A clock source: 1, 19 HP 70341A low frequency clock source: 2, 19

* The column value defines the factory-preset HP-IB address.

HP 70843 Address Switches

These are accessed via the instrument rear panel. The factory preset settings are shown in the following diagram:

2-10

Installation Preparation for Use

HP 70340A Clock Source Module Address Switches

These switches are located on the clock source rear panel. The factory preset switch settings are row 1, column 19 as shown in the following diagram:

HP 70341A Clock Source Module Address Switches

These switches are located on the clock source rear panel. The factory preset switch settings are row 2, column 19 as shown in the following diagram:

2-11

Installation Preparation for Use

HP 70004A Display Address Switches

These are located on the rear panel of the HP 70004A display, it has no row switches (it defaults to row 0) - only column switches (the factory preset settings are shown in the following diagram):

HP-IB Address Switches

The HP-MSIB address switches also act as HP-IB switches. If you want your system to communicate over the HP-IB:

The row switches must be set to 0. The column switches define the HP-IB address.

If you want to change the HP-IB address (for example, use an address that is different from that defined by the column switch settings), it is recommended that you use the Display, Address Map function keys as follows:

CAUTI ON

It is not recommended that you change the HP-IB address using the HP -MSI B/H P- IB s wi tche s as th e se al so ch ange th e HP- MS IB addr e ss. If the HP-MSIB address protocol is violated your system will fail to operate.

To Change the HP-IB Address

1. Press the Display fixed label key.

2. Press the

Address Map

3. Rotate the large display knob clockwise until the green box rests on the .

Anl

4. Press , select an address using the numeric keypad then press

HP-IB ADD RS ET

ENTER

DISPLAY

left-menu softkey.

70843 Err Perf

Factory Preset HP-IB Addresses

The error performance analyzer HP-IB address is factory preset to 18 (column part of HP-MSIB switch setting).

2-12

Installation Preparation for Use

Bench Operation

Plastic feet are included with Mainframes and stand-alone instruments to provide bench operation convenience. The plastic feet are self-aligning when systems are to be stacked.

Rack Mount Installation

Front handles must be removed when fitting the system rack mount options.

HP 71612 option 1CM - rack mount kit (HP part number 15810A) HP 71612 option 1CP - rack mount kit with handles (HP part number 15811A) HP 70843 option 1CM - rack mount kit (HP part number 5062-3979) HP 70843 option 1CP - rack mount kit with handles (HP part number 5062-4073)

The rack mounts available are illustrated below. Angled brackets (HP 12679C) may be ordered to provide additional rear or side support for the rack mounted instruments.

2-13

Installation System Installation

System Installation

The following figure shows an error performance analyzer system.

HP 70004A Display

HP 70340A Clock Source

HP 70843 Error Performance Analyzer

Accessories

The following cables, connectors and terminations are suppled with your system.

Cables

4 off SMA cables, part number 8120-4948; use to connect the clock/data ports.

Connectors

5 off APC - 3.5 mm female to female, part number 5061-5311; use as savers for pattern generator clock/data outputs and error detector data input.

2 off APC - 3.5 mm male to female, part number 1250-2472; use as savers for error detector clock input and trigger output.

T erminations

7 off SMA terminations, part number 1250-2121; use on unused clock/data outputs.

2-14

Installation System Installation

Procedure

Use the following procedure to install your HP 71612 series system.

CAUTI ON

Ensure that no power cables are connected. Also check that the LINE POWER switches are set to OFF.

CAUTI ON

En sure that th e displa y line volt age selec tor swit ches ar e set for th e line voltage being used, also check the fuse ratings, see pages 2-7 and 2-9. On HP 71612 option UKB instruments, check also the mainframe Line Voltage Selector and fuse.

1. Install the HP 70340A clock source module into the display.

2. Arrange the Display and HP 70843 for bench operation. The plastic feet on the Display and HP 70843 are self-aligning when systems are stacked. To rack mount your system, refer to

Rack Mount Installation

, see page 2-13.

3. Connect the HP-MSIB cables as follows:

CAUTI ON

Your system must be powered down when connecting or disconnecting HP-MSIB cables.

The diagram shows the systems viewed from the rear.

2-15

Installation System Installation

4. Connect the CLOCK IN port of the HP 70843 pattern generator to the CLOCK OUT of the clock source module.

CAUTI ON

When tightening SMA connectors and terminations, ensure that the maximum torque setting used is 0.9 N-m.

NOTE

The other front panel ports on the HP 70843 pattern generator and error detector are interconnected according to the application you want to undertake. All the necessary cables, a dapters and 50Ω term ination s are provided with your instrument. Unused ports must be terminated in 50Ω.

CAUTI ON

Check the power cables you intend to use for damage before powering on your system, see the Power Cables on page 2-6.

5. Connect power cables to your system then connect the cables to the power outlets.

Your system is now ready for System Verification, see page 2-17.

2-16

Installation System Verification

System Verification

This section contains procedures which will enable you to verify that your

performance analyzer

has been correctly installed.

error

Error Performance Analyzer System Verification

The HP 70843 error detector and pattern generator are connected back-to-back. then the system selftest and instrument preset parameters are used to verify correct installation. A description of what you will see during selftest is given in System Selftest at Power-on, see page 2-18 (since selftest takes only 15 seconds approximately to complete, you should read the description before powering on your system).

1. Interconnect the front panel ports as shown below, then prior to switching on your system, read Selftest at Power-on, see page 2-18.

2. Switch on the two Line power switches (in any order) - wait approximately 15 seconds for selftest to end. Note that the HP 70843 line power switch is on the instrument rear panel.

3. Press the display key to set up the instrument preset parameters.

4. Check that the displayed clock frequency is 1.000 GHz and that the

INST PRESET

indicator on

ACT

the instrument is lit.

5. Press the display key, the

DISPLAY

indicator should extinguish and an A should

ACT

appear at the top left of the display.

6. Press the display key, the A should disappear and the

indicators should

ACT

light.

7. Press , , . Wait for the clock and

input & eye

data signals to align, then do a and wait for alignment to com-

0/1 THR AUT O CLK-DAT ALIGN

0/1 THR CEN TER

plete.

8. Press . The

RUN GATING

GATING

indicator on the error detector and the

Gate

flag at

the top right of the display should light.

9. Check that the displayed error count is 0.

If there are no errors, the system is ready for use.

2-17

Installation Selftest at Power-on

Selftest at Power-on

At power-on the error performance analyzer system performs a selftest (this takes approximately 15 seconds to complete). During this time the display, instrument, clock source and mainframe (option UKB instruments) operate as follows:

Display:

The display is blank for the first few seconds of the selftest. It then shows a multi-colored raster. The raster sweeps to the right, to show a blue back-ground. For the remainder of the selftest the display is as follows:

After selftest the display may continue to display the above, or will display the module parameters present prior to the last power down.

HP 70843:

All front panel indicators are lit for approximately eight seconds then extinguished for the remainder of the selftest.

Clock Source Module:

After selftest the All front panel indicators are lit for approximately five seconds

indicator should light.

ACT

then extinguished for the remainder of the selftest.

Mainframe:

2-18

All front panel indicators extinguish except for

After selftest the

indicator should light.

ACT

LINE

Installation Installing/Removing Modules

Installing/Removing Modules

This section describes how you install a clock source module into a Display and Mainframe.

Installing an HP 70340A Clock Source Module into a Display

Use the following procedures to install your clock source into the display. To remove a module, perform the steps in the reverse order.

1. Set the display LINE power switch to off.

2. Open the front panel door then insert the module.

3. Secure the module by pressing against its front panel while tightening the hex-nut latch with an 8 mm hex-ball driver.

When removing a clock source module, disconnect any cables that may be connected to the rear panel.

2-19

Installation Installing/Removing Modules

Installing an HP 70341A Clock Source Module into a Mainframe

1. Open the front panel door, then insert the clock source module into the right side of the mainframe.

CAUTI ON

The Mainframe LINE power switch must be set to off before the front panel door will open.

2. Secure the module by pressing against its front panel while tightening the hex-nut latch with an 8 mm hex-ball driver.

When removing a clock source module, disconnect any cables connected to the rear panel.

2-20

3 System Overview

System Overview Configurations

Configur ations

The HP 71612 Series of Gigabit testers can be configured into one of the following systems:

System Options

• HP 71612 option UHF: 1-12 Gb/s error performance analyzer system

• HP 71612 option UHG: 1-12 Gb/s pattern generator system

• HP 71612 option UHH: 0.1-12 Gb/s error detector system

Each system comprises an HP 70004A display and an HP 70843 pattern generator or error detector or both. For HP 71612 option UKB systems, an HP 70001A mainframe and low frequency clock extension module is added.

An HP 71612 error performance analyzer system is shown in the following figure:

HP 70004A Display

HP 70340A Clock Source

HP 70843 Error Performance Analyzer

3-2

System Overview Configurations

Additional System Options

• HP 71612 option UHJ: error location analysis (cannot be ordered with option UHG pattern generator system)

• HP 71612 option UKB: low frequency clock extension of options UHF or UHG to

0.1 Gb/s.

• HP 71612 option UKC: delete clock source from option UHF or UHG

Refer to Chapter 1,

General Information

, for a complete list of HP 71612 options.

HP 70843 Instrument Options

• HP 70843 option UHF: error performance analyzer (0.1 to 12 Gb/s)

• HP 70843 option UHG: pattern generator (0.1 to 12 Gb/s)

• HP 70843 option UHH: error detector (0.1 to 12 Gb/s)

• HP 70843 option UHJ: error location analysis (not available with option UHG)

Documentation Overview

The manuals supplied with each system are listed in the following table:

Element Product Number Manual HP Part Number Comments

System HP 71612 Operating/

Programming

Display HP 70004A Operation

Installation/ Verification

Mainframe HP 70001A Installation/

Verification

71612-90011 This manual is supplied

with all systems.

70004-90031 70004-90005

70021-90021 This manual is only

These manuals are supplied with all systems.

supplied with HP 71612 option UKB (low frequency extension) systems.

*Clock source

Instrument HP 70843 Operating/

HP 70340A User’s Guide 70340-90001 This manual is supplied

with all systems.

71612-90011 This manual is supplied

Programming

with all instruments.

*Clock source documentation is not supplied if option UKC is ordered with your system. The clock source is only supplied with HP 71612 options UHF or UHG. It is not supplied with an HP 71612 option UHH, nor with any HP 70843 option.

3-3

4 Operating Features and

Specifications

Operating Feat ur es and Speci f ications Introduction

Introduction

This chapter lists and describes the features and specifications of an HP 70843 error performance analyzer. Refer to Chapter 1 options and accessories.

General Information

for advice on instrument

Warm-up

All specifications valid after a 30-minute warm-up period.

Operating Temperature Specification

Temperature range for specified operation:

Calibration Interval

Recommended 2 years

5 to 35ºC; 100 MHz to 10 GHz, 5 to 40ºC.

4-2

Operating Feat ur es and Speci f ications Patte rn Gene ra to r

Pattern Generator

External connections

Patterns

PRBS Test Patterns

2^31−l - polynomial D31 + D28 + 1 = 0, inverted 2^23−1 - polynomial D23 + D18 + 1 = 0, inverted (as in CCITT Rec O.151) 2^15−1 - polynomial D15 + D14 + 1 = 0, inverted (as in CCITT Rec O.151) 2^10−1 - polynomial D10 + D7 + 1 = 0, inverted 2^7−1 - polynomial D7 + D6 = 1 = 0, inverted

Zero Substitution/Variable Mark Density

Test Patterns

8192 bits, based on 2 2048 bits, based on 2 1024 bits, based on 2 128 bits, based on 2

−

1 PRBS

−

1 PRBS 1 PRBS 1 PRBS

4-3

Operating Feat ur es and Speci f ications Patterns

Zero Substitution

Zeros can be substituted for data to extend the longest run of zeros in the above patterns. The longest run can be extended to the pattern length −1. The bit following the substituted zeros is set to 1.

Variable Mark Density

The ratio of 1s to total bits in the above patterns can be set to 1/8, 1/4, 1/2, 3/4, or 7/8.

User-programmable test patterns

Variable length user patterns from 1 bit to 8M bits. Refer to Chapter 8

Disk Operation

Table 4-1 Pattern Granul arity

and Appendix B, page B-3, for detailed information on user patterns.

Patte rn Length Alte rn a te Pattern Length Resol u tion

>4 Mbit >2 Mbit 256 >2 Mbit >1 Mbit 128 >1 Mbit >512 kbit 64 >512 kbit >256 kbit 32 >256 kbit >128 kbit 16 >128 kbit >64 kbit 8 >64 kbit >32 kbit 4 >32 kbit >16 kbit 2

≤32 kbit ≤16 kbit

Alternate test pattern - pattern generator only

User Patterns and

Switch between two equal length user programmable patterns, each up to 4,194,304 bits, under the control of a front panel key, HP-IB or the auxiliary input port; changeover is synchronous with the end of a word. The length of the alternating patterns should be a multiple of 256 bits.

T wo methods of controlling pattern changeover are available, oneshot and alternate. Refer to the paragraph on the

NOTE

The error detector is not affected by the pattern switching and is set to

Auxiliary Input

(on page 4-10) for further information.

pattern A when Alternate Pattern is selected.

4-4

Operating Feat ur es and Speci f ications Clock Input

Internal Disk Drive

The HP 70843 internal disk drive is used to store user data patterns. The disk supports MSDOS format 1.44 Mbyte 3.5 in. disks only. The disk functions supported are:

• Pattern read

• Pattern write

• Disk format

• Pattern delete

Refer to Chapter 8 disk operation.

User Patterns and Disk Operation

for more detailed information on

Clock Input

Input for the clock to the pattern generator

Features

• Set frequency - when used with HP 70340/70341 clock source

• Set frequency step - when used with HP 70340/70341 clock source

• Measure frequency

• Set output level of clock source

Specifications

Frequency range: Interface:

0.45 V to 0.90 V pp (≤10 GHz),

0.63 V to 0.9 V pp (>10 GHz) dc coupled

100 MHz to 12 GHz

Impedance: Connector: Amplitude:

Note: Do not apply dc volts.

50Ω nominal SMA female connector 450 to 900 mV pp

4-5

Operating Feat ur es and Speci f ications Data and Data (inver t ed) Outputs

Data and Data (inverted) Outputs

The following pattern generator data output features are accessed using the

data output

key and its menu of softkeys.

Features

• Polarity - normal or inverted data.

• Data high level adjust.

• Data amplitude adjust.

• External termination voltage 0/−2V or ac coupled.

• External attenuator set 0 to 40 dB for 0V termination.

• Delay v clock adjust.

• Output ON/OFF selection.

• Vertical data-eye cross-over adjust.

• Independent control of high level, amplitude and ON/OFF for DATA and DATA

Data output features not controlled by data output softkeys

• Output gating - controlled by AUXILIARY INPUT port (see Auxiliary Input description on page 4-10).

• Error add - (see Error Add paragraph on page 4-8).

Specifications

Data outputs - main

Interface: Impedance: Format: Amplitude: Transition times: (10% to 90%) Jitter: Offset (range): Clock/data delay:

complementary dc coupled, reverse terminated.

50Ω nominal.

NRZ, normal or inverted.

0.5 to 2 V pp in 10 mV steps. < 30 ps (typical at 2 V pp).

typically less than 20 ps pp; <15 ps pp at 10 Gb/s

+1.5 V to −3.0 V in 10 mV steps.

±1 ns in 1 ps steps (100 MHz to 500 MHz), 1 clock period (500 MHz to 12 GHz).

Resolution: Connector: Terminations:

4-6

±1 ps. APC-3.5 male connector.

50Ω −2V; 50Ω ac coupled

Operating Feat ur es and Speci f ications Data and Data (inver t ed) Outputs

The following figures illustrate data/clock amplitude and high-level relationship for 0V and −2V terminations.

Figure 4-1 Clock/Data Amplitude and High-Level Relationship with 0V

T ermination

Figure 4-2 Clock/Data Amplitude and High-Level Relationship with −2V

T ermination

4-7

Error Add

Operating Feat ur es and Speci f ications Clock and Clock (invert ed) Outputs

Add errors to the data using the key and its menu of softkeys. There are three

error add

modes of operation:

Single: Fixed: External:

Adds single errors on demand.

Fixed error ratios of 1 error in 10

bits, n = 3, 4, 5, 6, 7, 8, 9.

Injects a single error in the transmitted test pattern on each rising edge at

the ERROR INJECT INPUT port.

Clock and Clock (inverted) Outputs

The following clock output features can be set using the key and its menu of softkeys.

• Clock high level adjust.

• Clock amplitude adjust.

• External termination voltage 0/−2V or ac coupled.

• External attenuator set 0 to 40 dB (0V termination only).

• Independent control of high level and amplitude for CLOCK and CLOCK

clock output

Specifications

Clock outputs - main

See figures 4-1 and 4-2 for amplitude and high-level specifications with 0V and −2V termination.

Frequency range: Interface: Amplitude: Range: Connector:

4-8

Complementary, dc coupled, 50Ω, reverse terminated.

0.3 to 2 V pp in 10 mV steps.

+1.5 to −3.0 V in 10 mV steps.

APC-3.5 mm male connector.

100 MHz to 12 GHz.

Operating Feat ur es and Speci f ications Subrate Clock & Data (inver t ed) Output s

Subrate Clock & Data (inverted) Outputs

Four subrate Data outputs (parallel data out ports) and one subrate Clock output are available. Subrate Data and Clock are at 1/4 the main Data and Clock rate. Subrate data is inverted relative to the main data output. When the main data is a pure PRBS, the subrate data is a PRBS at 1/4 the main data rate (every 4th bit is output). When a RAM based pattern (including mark density and zerosub patterns) is selected the data pattern output from each subrate port depends on the pattern length and will change if the trigger bit position changes. Refer to Appendix B for additional information.

The following subrate features are provided:

Features

• Data high-level adjust.

• Data amplitude adjust.

• Clock high-level adjust.

• Clock amplitude adjust.

• Set Clock and Data to ECL.

• Set external termination voltage 0/−2V or ac coupled.

Specifications

Frequency range: Interface: Amplitude: Range: Connector:

dc coupled, 50Ω, reverse terminated.

0.5 V to 1 V pp in 10 mV steps.

0 to −1.5 V in 10 mV steps.

SMA female connector.

1/4 of main clock rate.

Trigger Output

Provides an electrical trigger synchronous with the pattern for use with an oscilloscope or other test equipment. It operates in two modes, pattern and divided clock. Refer to pages 7-16 and 7-17 for more information on Trigger Outputs.

Features

• Pattern or clock trigger

• Pattern trigger position set

4-9

Operating Feat ur es and Speci f ications Auxiliary In put

Pattern Mode

In pattern mode the trigger is synchronized to repetitions of the output pattern.

PRBS 2^31−1, 2^23−1, 2^15−1, 2^10−1, 2^7−1

Pulse synchronized with a specified bit in the pattern. The repetition rate is 1 pulse for every 32 pattern repetitions.

Alternate pattern

Pulse at bit 0 of the pattern or trigger output alternates with pattern.

All other patterns

Pulse synchronized to any bit of the pattern. The repetition rate is a function of the pattern length. The rate is the lowest common multiple of 256 and the length example:

• Pattern length = 32767 => 1 pulse/256 pattern repetitions

• Pattern length = 32768 => 1 pulse/pattern repetition

Divided Clock Mode

In divided clock mode the trigger is a square wave at the clock rate divided by 32 or 8.

NOTE

Clock divided by 8 trigger has lower jitter. Clock divided by 32 has same timing relative to data as the pattern trigger.

Interface

Pulse width: Pulse amplitude:

nominal

Impedance: Interface: Connector:

32 bits

Output terminated 50Ω to 0V; High: 0V nominal; Low: −0.4 V

50Ω nominal

dc coupled

SMA female connector

Auxiliary Input

The AUXILIARY INPUT port can be used to control user programmable alternate test patterns or inhibit data output (force the data to a fixed low level).

4-10

Operating Feat ur es and Speci f ications Auxiliary In put

Alternate Pattern Selected

The instrument will output one of two patterns (A or B) at the end of either pattern. The auxiliary input controls which pattern is output in one of two modes:

• Oneshot - a rising edge on the auxiliary input inserts a single version of B pattern into repetitions of pattern A.

• Alternate - The logic state of the signal at the auxiliary input determines which pattern is output. A logic ‘0’ will output pattern A.

NOTE

In both cases, switching between patterns is at the end of a pattern and is hitless (error free).

Data Output Inhibit (Gating mode)

If an Alternate Pattern is not selected, an active (TTL low) signal at the auxiliary input port forces (gates) the data to a logic zero at the next 32-bit boundary in the pattern. See the following figure:

NOTE

Connecting an external termination to the auxiliary input will pull it low and disable the data output.

Interface

Interface: Levels: Connector:

dc coupled

TTL levels (active low)

BNC female connector

To Select Oneshot Mode

Select

ONCE

pattern

then set to and to

ALTPAT AUX USR AUX ALTPAT ALTONCE

To Select Alternating Mode

Select

ALT

pattern

then set to and to

ALTPAT AUX USR AUX ALTPAT ALTONCE

4-11

Operating Feat ur es and Speci f ications Error Inject Input

Error Inject Input

The external ERROR INJECT INPUT adds a single error to the data output for each rising edge at the input.

Interface

Levels: Connector: Minimum pulse width:

TTL compatible (active low)

BNC female connector

100 ns

Status Indicators

Pattern Generator indicators

• Clock Loss: Indicates nominal low clock power at clock input port.

Error Detector indicators

• Clock Loss: Indicates nominal low clock power at clock input port.

• Data Loss: Indicates no data transitions in the last decisecond.

• Sync Loss: Error detector out of pattern sync (see sync gain/loss criteria spec).

• Gating: Measurement in progress.

• Errors: Indicates one or more data errors in the last decisecond.

General instrument indicators

• HP-IB RMT, TLK, LSN, SRQ: standard indicators

• MSIB ACT, ERR: standard indicators

• VOLT/TEMP: instrument has detected over-temperature or abnormal voltage condition and has shut down. Power cycle required to recover.

Rear Panel Switches

• 8-way DIL switch for HP-IB/MSIB address.

• Line input module on/off switch.

4-12

Operating Feat ur es and Speci f ications Error Det e cto r

Error Detector

External connections

Clock Input (error detector)

Features

• Switchable termination voltage 0V or −2V.

• Input frequency measurement.

Specifications

Frequency Range: Amplitude: Range: Interface: Impedance: Input termination: Sensitivity: Connector:

450 to 900 mV pp.

+1.5V to −4V.

dc coupled.

50Ω.

<100 mV pp (typical at 10 Gb/s).

APC-3.5 mm female connector.

100 MHz to 12 GHz.

switchable 0V or −2V.

4-13

Operating Feat ur es and Speci f ications Data Input

Data Input

The error detector data input port offers the following features, selectable using the

input & eye

key and its menu of softkeys.

Features

• Data polarity - normal or inverted data.

• Auto or manual slicing.

• Set manual slicing level.

• Termination voltage - 0/−2V.

• Measure auto slicing voltage.

• Clock/Data delay adjust.

• Clock/Data alignment.

• 0/1 threshold centre.

Specifications

Impedance: Format: Amplitude: Sensitivity: Decision threshold range: Range: Data input range: Clock/Data phase alignment:

Connector:

50Ω to 0V or −2V, dc coupled.

NRZ.

0.5 to 1 V pp. <50 mV pp (typical for 2 ^23−1 PRBS input at 10 Gb/s 0V high level).

+1V to −3V in 1 mV steps.

+1.5V to −4V.

±1 ns in 1 ps steps (100 MHz to 3 GHz) 1 clock period (3 to 12 GHz) in 1 ps steps.

APC-3.5 mm male connector.

Pattern Trigger Output (error detector)

Provide an electrical trigger synchronous with the error detector reference pattern.

Features

• Pattern or clock trigger.

4-14

Operating Feat ur es and Speci f ications Errors Ou tpu t

Pattern Mode

In pattern mode the pulse is synchronized to repetitions of the output pattern.

PRBS 2^31−1, 2^23−1, 2^15−1, 2^10−1, 2^7−1

Pulse synchronized to repetitions of the pattern. The repetition rate is 1 pulse/32 pattern repetitions.

All other patterns

Pulse synchronized to repetitions of the pattern. The repetition rate is a function of the pattern length. The pulse occurs at that lowest common multiple of 256 and the length example:

• Pattern length = 32767 => 1 pulse/256 pattern repetitions

• Pattern length = 32768 => 1 pulse/pattern repetition

Divided Clock Mode

In divided clock mode the trigger is a square wave at the clock rate/8.

Specifications

Interface: Impedance: Connector: Amplitude:

dc coupled.

50Ω nominal. SMA female connector. High: 0V nominal; Low: −0.4 V nominal.

Errors Output

Provides an electrical signal to indicate received errors. The output is the logical ‘OR’ of errors in a 32-bit segment of the data.

Features

• Pulse length switchable - RZ or stretched.

Interface

Format:

RZ, active high.

4-15

Operating Feat ur es and Speci f ications Gating In put

Interface: Impedance: Amplitude: Pulse Width: Connector:

dc coupled.

50Ω nominal.

High: 0V nominal; Low: −0.4 V nominal.

For 1-bit error: 16 clock periods nominal or stretched 200 ns.

BNC female connector.

Gating Input

The Gating Input is used to enable the error counters including during burst gating mode. In both these cases the error counters will always be enabled for a multiple of 32 pattern bits. When the Error Detector's clock and data inputs are continuous the Gating Input alone provides sufficient control of the bit error counting functions. If, however, the data input is not continuous then this input should be used together with the mode described under

Gating Menu

on page 7-35.

Burst Gating

The error counter control provided by the Gating Input is independent of the

Measurement Gating

menu and controlled via and . Refer to page 4-18 and

Measurement Period

configured via the

RUN GATING STOP GATING

Error Detector gating control

on page 4-22.

configuration

Measurements

Interface

Levels: Pulse Width: Connector:

NOTE

4-16

TTL levels (see note below).

10µs at 100 MHz; 1µs at 10 GHz.

BNC female connector.

Connecting an external termination to the gating input will pull it low and disable the instrument error counters. Gating resumes when the Gating Input returns high.

Operating Feat ur es and Speci f ications Automatic Clock-to-Data Alignment

Automatic Clock-to-Data Alignment

Introduction

An important feature of the HP 70843 error detector is the ability to automatically align the clock and data inputs such that the error detector samples in the middle of the the time axis). This reduces setting-up time as it automatically compensates for delays in the clock/data paths, preventing unnecessary errors.

eye

(in

The delay point in the using the softkey (part of the menu of softkeys).

DAT I/P DEL AY

at which the error detector samples can also be set manually

eye

input & eye

Definition

In order for the system to align the clock with the data (at the error detector input) it must find the edges of the data input where the Bit Error Ratio (BER) measured over a decisecond interval is less than or equal to a pre-defined threshold, and another adjacent point which is greater than the threshold. The

Eye Edge Threshold

via the softkey or remotely.

EYE EDG THR SHL D

can be set by the user to any value between 10

It is recommended that you perform the Clock-to-Data alignment procedure each time you configure an HP 71612 Series error performance analyzer. Normally this would be after setting up instrument parameters such as Pattern, Data Output (Level, Polarity) and Data Input (0/1 threshold, polarity).

Eye Width

Each time a successful clock-to-data alignment procedure is performed the eye width is calculated, and displayed on the EYE RESULTS page (select , then

EYE RESUL TS

. This result can be added to the USER'S PAGE.

eye

. The

edge is defined as a data input delay point

eye

-1

and 10-7 either

result pages

NOTE

The clock/data alignment process time is pattern-dependent, and with some large user-patterns alignment can take several minutes. If you wish to select a user pattern, it is recommended that you first perform clock/data alignment on a pure PRBS. This does not affect alignment accuracy and can save you valuable time.

Ensure that the received clock frequency is stable before performing a clock-to-data alignment procedure.

4-17

Operating Feat ur es and Speci f ications Measurements

Automatic 0/1 Threshold Center

The 0/1 threshold center operation is used to set the 0/1 threshold midway between two points, top and bottom of the threshold. The

height is calculated and displayed (on the EYE RESULTS page). The

eye

BER selectable threshold is set using the key. The function can be used to determine the optimum sampling point

0/1 THR CEN TER

for asymmetric

, or on patterns with an unequal mark-density.

eyes

To perform a 0/1 Threshold Centering

, where the bit error ratio is equal to a selectable

eye

EYE EDG THR SHL D

Select then press .

input & eye

0/1 THR CEN TER

Data Input 0/1 Threshold

Introduction

There are three methods of determining the 0/1 Threshold of input signals at the error detector data input; they are Manual, Automatic Track and Automatic Center.

If the signal at the error detector data input is a standard PRBS or a clean signal (no excessive noise or jitter) with a 1:1 mark density, use the Manual or Automatic Track Modes, otherwise use the Automatic Center mode.

Manual:

Automatic Track:

Automatic Center:

0/1 threshold can be set manually.

Range: Resolution:

+1 to −3V nominal

1 mV nominal

Tracks the mean dc level of the input signal. The 0/1 threshold calculated is displayed.

The error detector sets the 0/1 threshold midway between two points, the top and bottom of the eye, where the bit error ratio is equal to a selectable threshold. The eye height is calculated and displayed.

Measurements

The error detector counts bit errors by comparing data bit-by-bit with the internallygenerated reference pattern. All measurements run during the gating periods with the exception of Delta Error Count and Delta Error Ratio. These measurements run continuously to enable user adjustments for minimizing errors. The measurements are as follows, (refer to Appendix A for measurement definitions):

4-18

Operating Feat ur es and Speci f ications Measurements

• Bit Count

• Error Count

• Delta Error Count

• Error ratio

• Delta Error Ratio

• 0 - >1 Error Count

• 0 - >1 Error Ratio

• 1 - >0 Error Count

• 1 - >0 Error Ratio

• Errored Intervals - intervals seconds, deciseconds, centiseconds, milliseconds

• Error-free Intervals - intervals seconds, deciseconds, centiseconds, milliseconds

• Sync Loss Seconds

• Power Loss Seconds

• G.821 Error Analysis The Bit Count result is provided in particular for use whenever the detector's Gating Input

is being used to enable the bit error counters both in Normal and Burst Gating modes. Whenever the Gating Input is switching the measurement period is not continuous and hence the number of measured bits will no longer be equal to the multiplied by the

Err Det Clock Freq.

The ratio:

Gating Elapsed

Bit Count

Gating Elapsed * Err Det Clock Freq

allows the user to confirm the proportion of the measurement gating period for which the Gating Input enabled the clock and bit error counters.

Error Analysis

The Error Analysis is based on CCITT Rec G.821 and is derived from the bit error results.

• % Unavailability

• % Availability

• % Errored Seconds

• % Severely Errored Seconds

• Degraded Minutes

Power-loss Seconds

This is displayed as the number of seconds the error detector is not able to make measurements during a gating period due to ac power loss. The gating continues to the end of the selected period following a restoration of power.

4-19

Operating Feat ur es and Speci f ications Error Location ( HP 71612 or HP 70843 Option UHJ)

Sync-loss Seconds

Displays the number of seconds the error detector lost pattern synchronization during a gating period.

Frequency Measurement

The incoming clock frequency is measured and displayed to five significant digits.

Result Logging

Refer to Chapter 10

Data Logging

for information on logging results.

Error Location (HP 71612 or HP 70843 Option UHJ)

Error location is available only for RAM-based patterns. It has three forms:

•Bit BER

• Error location capture

•Block BER

Bit BER

Bit BER measurements are measurements made on a specific bit in a RAM-based user defined pattern. The specific bit is the “BER location” and is specified by an address. This measurement aids in identifying systematic errors causing a specific bit to change value.

Measurements

• Bit BER - BER of the BER location

• Bit error count - error count of the BER location

• Delta bit BER

• Delta bit error count Bit BER and Bit error count are affected by gating like normal BER. Delta bit BER and

delta bit error count run continuously like normal delta BER. The BER location may be specified by the customer as an address. After the location is

specified gating is restarted if the instrument was gating before the location was specified.

Error location capture

Error location capture allows you to capture the actual position of errored bits in a user defined pattern.

4-20

Operating Feat ur es and Speci f ications Error Location ( HP 71612 or HP 70843 Option UHJ)

To initiate a measurement select then . The

error locat ion

CAPTURE ERROR

instrument searches for the first bit errored bit in the pattern. The address of the errored bit will be displayed along with the bit pattern surrounding the highlighted errored bit (see below). The instrument performs Bit BER, Bit error count, and also Delta Bit BER, Delta bit count on the captured bit.

Select then to view the

result pages

OTHER RES UL TS

BIT :

results.

After an error is located the instrument displays:

BIT: Error Ad dre ss nnn Data window xxxx xxx x xxxx xxx x xxxx xxx x xxxy xxx x

•

xxx..

- pattern around error, 28 bits before error and 3 bits after error are displayed

•y - the reference value of the errored bit in inverse video

Block BER

Block BER measures the BER of a range of bits in the pattern. It replaces normal BER measurements. Ranges of bits must be a multiple of 32 bits with the block specified by a start location and block length. This measurement is essential when trying to locate the cause of systematic errors which can affect a section of bits, for example a corrupt header in a SONET or SDH frame.

Pattern sync is affected since normal BER is replaced by the block results. In general bit or block BER is not measured on every repetition of the pattern. The number

of repetitions depends on the pattern length.

Table 4-2 Patte rn Length/Nu mb e r of Re petitions for Bi t/B lo c k BE R

Patte rn leng th Num b er of repe ti tions

Odd 256 Multiple of 2 128 Multiple of 4 64 Multiple of 8 32 Multiple of 16 16 Multiple of 32 8 Multiple of 64 4 Multiple of 128 2 Multiple of 256 1

4-21

Operating Feat ur es and Speci f ications Measure me nt P er iod

Measurement Period

The measurement period is configured from the menu accessed via

gating

Measurement Period Features

•

Length:

bits or number of errors.

•

Timed Measurement Period:

59 minutes 59 seconds in 1 second steps.

•

Number of Bits:

1 second. Can be set for 10n bits, n = 7 to 15.

•

Number of Errors:

1 second. Can be set for 10, 100 or 1000 errors.

•

Real-time Clock:

up allows clock to continue running when the instrument is switched off or power fails.

•

Elapsed Time Indication:

to zero at the start of each gating period; holds value when measurement stopped.

The length of the measurement period can be set as a time period, number of

Can be set from 1 second to 99 days, 23 hours,

The time for the number of bits to be received to a resolution of

Time for number of errors to be detected to a resolution of

Provides time and date information for event logging. Battery back-

Shows elapsed time from the start of a gating period; resets

Gating modes

There are three gating (measurement timing) modes: Manual, Timed Single and Timed Repeat.

Manual:

Gating period is controlled by the and

RUN GATING STOP GATING

keys. Accumulating results are displayed throughout the measurement and the end of measurement results are held until a new gating period is started.

Single:

Gating period is started by pressing the key and terminates at

RUN GATING

the end of the gating period set by the user. Accumulating results are displayed throughout the gating period and the end of gating results are held until a new gating period is started.

Repeat:

Similar to Single but when one timed gating period ends, a new identical

period starts. This continues until the measurement is terminated by pressing the

STOP GATING

key. The measurement results displayed during any period can be the final results of the previous period or the accumulating results for the current period. There is no “deadtime” between consecutive periods. The gating period excludes any periods when the instrument is not powered.

4-22

Operating Feat ur es and Speci f ications Measure me nt P er iod

Gating Period Definition

• Time - 1 second to 99 days, 23 hours, 59 minutes, 59 seconds.

• Errors - 10, 100 or 1000.

• Bits - 1E07 to 1E15 bits. All gating periods to 0.1s resolution. Refer to

Measurements

Gating Input

during gated measurement periods.

on page 4-18 for details of the effect of switching the detector's

Burst gating

Burst gating is always used together with the error detector GATING INPUT and is available only with PRBS patterns 2^31−1, 2^23−1, 2^15−1, 2^10−1 and 2^7−1.

Although the Gating Input enables the clock and bit error counters, where the data input is not continuous, the Gating Input is often not sufficient to allow the detector to be kept synchronized throughout a series of bursts of the selected pattern. The only exception to this is where the data input pattern resumes, at the time when the Gating Input becomes active, from the pattern bit which would have been received had the data been continuous. In this special case selecting manual Sync Mode, once pattern synchronization has been gained. prior to the first deactivation at the Gating Input will allow error free reception. In all other circumstances where the data input is not continuous, for example in the testing of optical fibre loops, the instrument's Burst Gating mode should be selected.

A further requirement of this mode of operation is that a clock is provided at the Error Detector's clock input the data input during the measurements. then an external switch should be deployed to switch between the recovered clock and a continuous clock (e.g. from the Pattern Generator). In this configuration the switch should select the recovered clock whenever it is available but the Gating Input should only go active after the recovered clock has established a stable amplitude and a fixed phase with respect to the burst of pattern data bits. Similarly the Gating Input should be deactivated prior to either the onset of any transients in the recovered clock or the end of the data burst.

the time. Should it be necessary to use a clock recovered from

all

While in burst gating mode the error detector:

• Attempts to synchronize to the incoming data on every low to high transition of the Gating Input.

• Following each synchronisation attempt the detector counts bits and errors while the Gating Input remains high.

• As is the normal function of the Gating Input, all measurement counters are disabled whenever the Gating Input is low.

4-23

Operating Feat ur es and Speci f ications Pattern Synchronization

NOTE

The Synchronization threshold does not affect the error pattern synchronization attempt but will affect the instrument's “SyncLs” status. While Burst Gating is selected the only available is manual untimed. If the received data is errored during the synchronization attempt all measured error counts are invalid. The received clock must be continuous when burst gating is enabled.

Gating repeat mode

Pattern Synchronization

Synchronization Modes

Synchronization to the incoming pattern can be performed automatically or manually. In manual mode, the START SYNC softkey forces the error detector to attempt synchronization with the received pattern.

Sync Gain Loss Criteria

The criteria for gaining or losing synchronization is the error ratio in a 1 ms interval. Selectable error-ratio thresholds of 1E−1 to 1E−8 are provided. Refer to Appendix B

Operating Notes

for advice on setting sync thresholds.

Synchronization Times

• PRBS patterns - <0.2s

• STM64 frame at 10 GHz - <2.8s

• <10 kbit pattern, >1 GHz - <1s

Audible Output

The instrument has an audible output which varies with error rate. The effect of changing error rate is:

• Isolated errors - output produces a 100 ms tone.

• Other error rates - 5% change in error rate produces an audible change.

4-24

Operating Feat ur es and Speci f ications Logging to Exter nal Pri nt er

The audible output may be switched off or set to one of 15 volume levels. An audible output can also sound when sync loss occurs; selectable with the key on the menu.

sync & audio

AUDIO SYN CL S

Logging to External Printer

Functions

• Log on demand.

• Logging on/off.

• Log on error, end of gating period, error rate>threshold, alarms.

• Set logging threshold.

• Select HP-IB controller capability.

• Select HP-IB printer (HP DeskJet supported).

• Squelch on/off.

Refer to Chapter 10 for a detailed description of the measurement and status logging functions and, where the logged output is to be directed to an external HP-IB controller , to the HP 71612 Programming Manual (at the rear of this manual).

To Set Up Your Own Display of Results or Status Information

The HP 71612 Series System gives you the opportunity to display on the screen a page containing results or status information important to you. This is called the

User's Page

and is setup as follows: The following procedure shows you how to display and view the current

User's Page

selections, and edit (or build) the page to show your own choice of results or status information.

The process of editing the is accomplished using the softkey.

User's Page

build usr -p ge

is referred to as

Building the User's Page

, and this

Procedure

Select and View the User's Page

1. Press the hardkey, then the softkey.

result pages

USER’S PAGE

4-25

Operating Feat ur es and Speci f ications To Set Up Your Ow n Di spla y of Resu lts or Status Infor m at ion

The

User's Page

is now displayed and shows the results or status information selected by

the previous user.

To Build Your Own User's Page

1. Select , , .

result pages

You can now select from the choices offered in the menu of softkeys

USER’S PAGE b uild usr -pge

build usr -p ge

and build up the display to show the status or results information you wish. As you select a softkey the display will change to reflect your choice; the softkey selected is underlined. Refer to

Build User Page Menu Map

on page 6-16 for a chart of the selections offered.

4-26

5 Getting Started

Ge tti n g St ar ted

Introduction

The purpose of this chapter is to instruct first time users how to quickly become proficient at operating the HP 71612 Series error performance analyzer.

Using the HP 70004A Display

The HP 70004A display serves as the

front panel

for instruments in the HP 71612 Series Systems, and as your window for viewing current system configuration and measurement results. The HP 70004A display has 14 (7 on each side of the screen),

FIXED LABEL

keys above and below the screen, and 15 instrument hardkeys. All

softkeys

instrument functions/parameters are set up using these keys.

Figure 5-1

HP 70004A Display

Key Notation

Throughout this manual indicates softkey labels. Display fixed label keys and keys on the instrument hardkey panel are shown thus and

instrument hardkey

5-2

softkey

FIXED LABEL

Ge tti n g St ar ted

Display Fixed Label Keys

Fixed Label keys select major system functions such as PRINT, PLOT, INSTR PRESET, DISPLAY or MENU. The two most important keys and are explained

DISPLAY MENU

on pages 5-4 and 5-5. Refer to the HP 70004A display Operation Manual for detailed information on fixed label keys.

Instrument Hardkeys

Hardkeys are the keys on the panel to the left of the display knob (RPG knob). Use these keys to gain instant access to primary instrument functions.

Parameter Control Keys

Display knob

Use the display RPG knob to change parameters and select operating values.

Numeric Keypad

▲ ▼

Use the numeric keypad to enter numeric values. Use the two step keys to change parameters up or down.

Instrument Softkeys

The softkeys around the perimeter of the display screen are used to select instrument functions. The functions are organized in groups, called softkey menus.

NOTE

Softkeys and Windows Color Coding

Softkeys and windows are color coded to indicate the primary instrument functions with which they are associated, they are:

•

blue softkeys/window:

•

green softkeys/window:

•

yellow softkeys - green/yellow window:

•

grey softkeys/window:

• Softkeys that are “greyed out” are not valid for the currently selected instrument function.

Softkeys that are selected are displayed in inverse video or are underlined.

assigned to Results Page occupies two thirds of screen.

assigned to pattern generator/error detector configuration

assigned to Pattern Editor

assigned to user pattern selection and save.

Multi-State Functions

Some softkeys switch between two states, such as and

SYNC AUTO/MAN

. An underline on the key labels indicates which keys and conditions

LOGGING OFF ON

are selected.

5-3

Ge tti n g St ar ted

To Set Up the Display

To configure the system correctly it is important to first set up the display, and then configure the display to show instrument status. System functions are therefore split into two groups as follows:

• Display Functions

• Instrument Functions These functions are explained in the following paragraphs.

Display Functions

Display functions are accessed using the fixed label key. Pressing the

DISPLAY

key provides the softkeys on the left and right of the display as shown below,

DISPLAY

enabling display functions to be set up. Refer to the HP 70004A display Operation Manual for detailed information on display operation softkeys.

Figure 5-2

5-4

Display Softkeys

Ge tti n g St ar ted

Instrument Functions

Primary Instrument functions are accessed using the keys on the instrument hardkey panel or by pressing the fixed label key.

Both methods enable menus of softkeys which give access to all instrument functions. The following figure illustrates the primary instrument softkeys when each softkey shown there is a corresponding key on the instrument hardkey panel, except for the softkey.

misc

is pressed. For

Figure 5-3

Instrument Softkeys

5-5

Ge tti n g St ar ted System Turn-On

System Turn-On

Introduction

The getting started procedures assume that the HP 71612 series systems have been correctly installed and configured as described in Chapter 2

Installation

WARNIN G

CAUTI ON

NOTE

Before turning the system on, make sure it is grounded through the protective conductor of the ac power cable to a socket outlet provided with protective earth contact. Any interruption of the protective (grounding) conductor inside or outside the system, or disconnection of the protective earth terminal, can result in personal injury.

Do not turn on the HP 71612 Series Systems until they have been configured and fused for the available line voltage, and safely connected to the power line (115V or 230V).

Do not attempt to replace or remove clock modules while instruments are powered up as it may damage modules. Switch off the HP 70004A Display and if used the HP 70001A Mainframe before replacing or removing modules.

The HP 71612 Series Systems will not function correctly unless each instrument in the system is cabled correctly for HP-MSIB operation, and each instrument is powered up. Refer to Chapter 2

Installation

for

information on cabling.

5-6

Ge tti n g St ar ted Making Your First Measurem ent

Making Your First Measurement

Introduction

The following procedure is designed to give you confidence in using the instrument

and by performing a simple error measurement. It shows you

hardkeys

softkeys

how to cable the system and set up the error performance analyzer to perform a simple back-to-back error measurement. The procedure also introduces you to many of the instrument operating features.

Procedure

Ensure that 50Ω cables are used to connect the HP 70843 IN/OUT ports. All the cables, adapters and terminations you need are supplied with your instrument.

1. Connect the HP 70340A clock source RF OUTPUT port to the pattern generator CLOCK IN port.

2. Connect the pattern generator DATA OUT and CLOCK OUT ports to the error detector DATA IN and CLOCK IN ports respectively. Terminate any unused ports with 50Ω terminations (HP part number 1250-2121). See Figure 5-4 on page 5-8. Ensure the HP 70843 error performance analyzer and HP 70004A display rear-panel HP-MSIB ports are connected.

Initial Switch On

3. Switch on power to the HP 70843 and the HP 70004A display. All instrument and display LEDs will illuminate and then extinguish after a few seconds. The display will cycle through a range of colors, give a display indicating message stating

For instrument display press DISPLAY then NEXT INSTR

HP 70004A DISPLAY

finally display the status of the instrument selected before the last power down. The ACT LED on the HP 70843 will be illuminated when it has control of the keyboard.Wait until the display settles to indicate instrument status before continuing with

this procedure. If instrument status is not displayed, press then

NEXT INSTR

DISPLAY

Initial settings

4. Before you perform a measurement you must first configure the system to suit your application. Choose your own configuration using the instrument hardkeys and softkeys (refer to the pull-out card in the tray beneath the display for help) or select one of three stored predefined, complete instrument configurations. They are PRESET 0, PRESET 1 and PRESET 2.

and a

, and

5-7

Ge tti n g St ar ted Making Your First Measurem ent

To select PRESET 0 press the display key, and to select PRESET 1 or PRESET 2 select , , then or

Preset 2

trigger & setup

INST PRESET

recall setup Preset 1

For this procedure we set the error performance analyzer to its default values by selecting PRESET 0. Refer to Chapter 9 for a list of settings for each PRESET.

5. Press the green key.

INST PRESET

Figure 5-4 System Back-to-Back Connection

Perform a data eye measurement

In the following steps the

data eye edge threshold

aligned such that the error detector samples in the middle of the

6. Before performing the measurement select , then select

EYE RESUL TS

. No eye results will be displayed until clock-data alignment is

performed in step 9 of this procedure.

7. Press the hardkey on the display hardkey panel.

5-8

input & eye

is set, and the clock and data inputs

(in the time axis).

eye

result pages

Eye Edge Threshold

Ge tti n g St ar ted Making Your First Measurem ent

8. Set to , then select and select a

0/1 THR AUT OMA N AUTO EYE EDG THR SHL D

threshold using the numeric keypad. For example, to select a threshold of 1.00E−03; enter 1.00 using the keypad, then press the softkey and enter 3 using the keypad, then press .

9. Press the softkey. If clock-to-data alignment is successful, the

Status

ENTER

CLK-DAT ALIGN

line at the center of the screen reads

clock to data input delay aligned

Automatic 0/1 Threshold Center

On data signals with an unequal mark-density perform an automatic 0/1 threshold center operation as follows:

10.After performing the clock to data alignment select the softkey. The

Status

progress

line at the center of the screen will indicate

and

0/1 data input threshold centered

when complete.

0/1 THR CEN TER

0/1 input threshold centering in

To Select a Measurement Gating Period

11.Press the hardkey. The gating mode currently selected is MANUAL, try selecting a 20 second SINGLE gating period.

12.Press , then , use the numeric keypad and softkey to select a 20 second gating period. Proceed to step 13, or read

the following note for alternative gating choices.

gating

SINGLE GATE BY TIME GATING PERIOD

SECONDS

NOTE

The instrument is currently set to gate by time; two other gating period choices are also provided, they are: gate by errors and gate by bits. To select either of these gating choices select the appropriate softkey.

To Start a Measurement

13.Press the hardkey. Note the illuminated detector front panel and the

RUN GATING

flag at the top right of the screen.

Gate

Gating

LED on the error

Viewing Results and Introducing Errors into the System

14.Since there were no errors introduced into the system there are no errors measured. To introduce errors into the system and obtain a meaningful result proceed as follows:

15.Select the hardkey. The instrument offers you the choice of adding single errors, errors at a fixed rate or errors from an external source. For this procedure select a fixed rate of 1E−5. Proceed to step 16.

error add

5-9

Ge tti n g St ar ted Making Your First Measurem ent

To Select a Fixed Error Rate

16.Select , then choose an error rate of 1E-5. The error detector front panel ERRORS LED will be ON and an

ERR-ADD FIXED

Errors

flag illuminated at the top of the

screen.

To Add External Errors

Connect an external error signal source to the pattern generator ERROR INJECT INPUT. A single error is added to the data output for each rising edge at the input.

Start a New Measurement

17.Select

RUN GATING

To View Measurement Results

18.Press then and view results at the end of the gating

result pages

MAIN RESULTS

period. A typical results display is given in the following figure.

19.The error detector (Main Results) are displayed; this is only one of seven result pages you can select to view instrument status or configuration.

20.Try selecting each of the softkeys and view the error detector results for

result pages

each selection.

This concludes your first measurement using an HP 71612 Series error performance analyzer.

5-10

Ge tti n g St ar ted To Verify/D em onst r ate the Captur e Er ror Featur e (Opt ion UHJ

instruments)

To Verify/Demonstrate the Capture Error Feature (Option UHJ instruments)

The following procedure can be used to demonstrate capturing an error, or verify that the instrument is operating correctly in this mode. It also teaches you how to select an alternate pattern and add errors to one half of the alternate pattern.

Procedure

For this procedure an alternate pattern is selected and errors added to pattern B.

1. The procedure assumes that the HP 71612 is correctly installed; all MSIB cables are connected and the HP 70843 is connected back to back - pattern generator CLOCK OUT and DATA OUT connected to error detector DATA IN and CLOCK IN. Also connect the clock source RF OUTPUT to the pattern generator CLOCK IN port.

2. Select , then an store - for this example select .

3. Set to then select . This sets the length of the pattern in

INTERNL PATT1

4. Select then enter a pattern length of 4000 using the numeric keypad - press . If you press you can view the pattern on a

full screen.

5. Check that the key is set to .

6. Load a PRBS into each half of the alternate pattern as follows:

7. Set the cursor on bit 0 of half A (half A is the uppermost pattern) then select

load block 2^13 prbs NO MO DIFY

8. Use the and keys to set the cursor on bit 0 of half B.

9. Select , , . Add errors to pattern B by changing bits 224 and 560.

10.Select , .

11.Select and set to and to

12.Select and press . Note that the Bit error address in the Error location configuration control window indicates an error in bit 224, - press

CAPTURE ERROR

positions depend upon the initial state of the instrument error registers. The error positions given could possibly be reversed in order.

13.End of procedure.

pattern

edit ram usr INTERNAL PATT

INTERNL PATT1

ALT PAT ON OFF ON YES

to 1.

SETPAT LENGTH

ENTER toggle screen

INSERT REPLACE REPLACE

, , .

▼

goto

load block 2^13 prbs NO MO DIFY

save pattern INTERNL PATT1

pattern

. Note that the red

error locat ion

ALTPAT AUX USR USR ALTPAT HALF AB

Errors

flag is illuminated.

CAPTURE ERROR

again and the address changes to 560. Note the captured error

5-11

Agilent 71612B Programming Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Operating Manual

1 General Information

Introduction

Safety Considerations

Safety Information

General

Safety Symbols

Options

Upgrade Options

Accessories Supplied

Recommended Accessory List

Serial Number Information

Returning Instruments for Service

Packaging Requirements

Preparing an Instrument for Shipping

Precautions

ESD Precautions

Static-safe Workstation

Static-safe Accessories

Lifting/Carrying the HP 70843

Display Cleaning

Cabinet Cleaning

How to Update the HP 70843 Firmware

To Update Control Processor Firmware

To Update Measurement Processor Firmware

2 Installation

Introduction

Preparation for Use

Initial Inspection

To Fit an Instrument Hardkey Panel

Statement of Compliance

Instruction for cleaning

Operating Requirements

Line Voltage Selection

Line Fuses

Fuse Ratings

HP-MSIB Address Switches

HP-IB Address Switches

Bench Operation

Rack Mount Installation

System Installation

Accessories

Procedure

System Verification

Error Performance Analyzer System Verification

Selftest at Power-on

Installing/Removing Modules

Installing an HP 70340A Clock Source Module into a Display

Installing an HP 70341A Clock Source Module into a Mainframe

3 System Overview

Configur ations

System Options

Additional System Options

HP 70843 Instrument Options

Documentation Overview

Introduction

Warm-up

Operating Temperature Specification

Calibration Interval

Pattern Generator

External connections

Patterns

PRBS Test Patterns

Zero Substitution/Variable Mark Density

User-programmable test patterns

Alternate test pattern - pattern generator only

Internal Disk Drive

Clock Input

Features

Specifications

Data and Data (inverted) Outputs

Features

Specifications

Error Add

Clock and Clock (inverted) Outputs

Specifications