Agilent 8922M Users Guide

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User’s Guide

Agilent Technologies 8922M/S GSM Test Set

Agilent Part No. 08922-90211

Printed in UK

January 1998

© Copyright 1998, Agilent Technologies. All rights reserved. No part of this manual may be reproduced in any form or by any means(including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies Inc. as governed by United States and international copyright laws.

Contents

1 Installing Your Agilent 8922M/S

Declaration of Conformity.................................................................... v

Sales and Service Ofﬁces...................................................................viii

Agilent Technologies 8922M/S Documentation Description............... x

Typeface Conventions..........................................................................xi

Using this Chapter .............................................................................1-2

Fuses and Power Cords .....................................................................1-3

Installation Overview ........................................................................1-5

General Information...........................................................................1-8

2 Making Measurements

Using This Chapter............................................................................2-2

Agilent Technologies 8922M/S Operating Modes ............................2-3

ACTIVE CELL..................................................................................2-5

TEST MODE.....................................................................................2-9

CW GENERATOR..........................................................................2-12

Measurements..................................................................................2-13

If You Have Problems with a Measurement ...................................2-30

Advanced Features...........................................................................2-39

3 Verifying Performance

About This Chapter............................................................................3-2

Setting up the Tests............................................................................3-3

Getting the Right Equipment ............................................................3-4

Installing and Operating the Software ..............................................3-5

Understanding the Tests.....................................................................3-7

Understanding Test Failures ............................................................3-13

Agilent Technologies 8922M/S Speciﬁcations................................3-14

Contents-1

Contents

4 Screens

Field Types........................................................................................ 4-2

Audio ................................................................................................4-4

Bit Error ............................................................................................ 4-8

Bit Error 2 ....................................................................................... 4-11

Cell Conﬁguration - GSM 900 ....................................................... 4-16

Cell Conﬁguration - E-GSM, DCS 1800, PCS 1900 ..................... 4-22

Cell Control - Active Cell ............................................................... 4-27

Cell Control - Active Cell + ........................................................... 4-31

Cell Control - Test Mode ................................................................ 4-33

Cell Control - CW Generator ......................................................... 4-35

Cell Control 2 ................................................................................. 4-37

Conﬁgure ........................................................................................4-49

CW Measurement ........................................................................... 4-54

Fast Bit Error ..................................................................................4-56

I/O Conﬁguration ........................................................................... 4-59

Logging .......................................................................................... 4-63

Measurement Sync ......................................................................... 4-64

Message ..........................................................................................4-69

MS Information / Signaling ............................................................ 4-70

Oscilloscope, Main Controls .......................................................... 4-75

Oscilloscope, Trigger Controls ....................................................... 4-77

Oscilloscope, Marker Controls ....................................................... 4-80

Output RF Spectrum, Main View (Option 006 Only) ....................4-82

Output RF Spectrum, Trace View (Option 006 Only) .................... 4-84

Phase and Frequency Error - Multiburst OFF................................. 4-86

Phase and Frequency Error - Multi-burst ON................................. 4-88

Phase/Freq, Phase Err ..................................................................... 4-91

Phase/Freq, Data Bits ..................................................................... 4-93

Pwr Ramp: Rise Edge .................................................................... 4-95

Pwr Ramp, Top 2 dB ...................................................................... 4-97

Contents-2

Contents

Pwr Ramp, Fall Edge ......................................................................4-99

Pwr Ramp: Summary ....................................................................4-101

Pwr Ramp: Pulse (Option 006 Only) ............................................ 4-104

Pwr Ramp: Pulse Rise (Option 006 Only) ....................................4-107

Pwr Ramp: Pulse Fall (Option 006 Only) .....................................4-109

RF Generator / RF Analyzer (AF Gen) ........................................4-111

RF Generator / RF Analyzer (RF Analyzer) .................................4-112

RF Generator / RF Analyzer (RF Gen) .........................................4-115

Service ..........................................................................................4-118

SMS Cell Broadcast ......................................................................4-119

Spectrum Analyzer, Main Controls (Option 006 Only) ...............4-122

Spectrum Analyzer, RF Gen Controls (Option 006 Only) ...........4-124

Spectrum Analyzer, Marker Controls (Option 006 Only) ............4-125

Spectrum Analyzer, Auxiliary Controls .......................................4-127

Tests...............................................................................................4-129

5 Keys

Key Map ............................................................................................5-2

Function Keys....................................................................................5-3

Local Keys ......................................................................................5-10

Global Keys ....................................................................................5-11

Units Keys .......................................................................................5-12

Contents-3

Contents

6 Connectors

7 Messages

Front-Panel Connectors of the Agilent Technologies 8922M/S ....... 6-2

Rear-Panel Connectors of the Agilent Technologies 8922M/S....... 6-10

Signal Descriptions for SYSTEM BUS ......................................... 6-18

Timing Diagrams............................................................................. 6-27

Communication Failures .................................................................. 7-2

Firmware Error ................................................................................. 7-3

Sync Status ....................................................................................... 7-4

Protocol Error Messages .................................................................. 7-5

Timers................................................................................................ 7-6

Disconnects ....................................................................................... 7-8

Protocol Log Examples Of Typical Calls........................................ 7-11

Monitoring For Protocol Failure And Recovery During Test......... 7-12

Contents-4

8 Instrument BASIC

Agilent Technologies 8922M/S Instrument BASIC Overview......... 8-2

Conﬁguration and Instrument Control .............................................. 8-4

Loading, Storing, and Running ....................................................... 8-10

Entering and Editing Programs ...................................................... 8-16

Memory Cards................................................................................. 8-20

Programming and Using the TESTS Subsystem............................. 8-26

Contents

A APPENDIX A

B Glossary

Purpose ............................................................................................. A-2

Equipment Required......................................................................... A-3

Connecting the Agilent 8922M to the HP/Agilent 37900D .............A-4

Setting Up the Agilent Technologies 8922M ................................... A-5

Setting Up the HP/Agilent 37900D.................................................. A-6

How to Obtain a Protocol Log.......................................................... A-8

Additional Information................................................................... A-11

Protocol Log of a Typical Call........................................................A-13

.......................................................................................................... B-2

Index 1

Contents-5

Contents

Contents-6

Warranty

This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Agilent Technologies will at its option, either repair or replace products which prove to be defective.

For warranty service or repair, this product must be returned to a service facility designated by Agilent Technologies. Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges, duties, and taxes for products returned to Agilent Technologies from another country.

Agilent Technologies warrants that its software and ﬁrmware designated by Agilent Technologies for use with an instrument will execute its programming instructions when properly installed on that instrument. Agilent Technologies does not warrant that the operation of the instrument, 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 software or interfacing, unauthorized modiﬁcation or misuse, operation outside of the environmental speciﬁcations for the product, or improper site preparation or maintenance.

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

Limitation of Remedies and Liability

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

Responsibilities of the Customer

The customer shall provide; 1 Access to the products during the specified periods of coverage to perform mainte-

nance.

2 Adequate working space around the products for servicing by Agilent Technologies

personnel.

3 Access to and use of all information and facilities determined necessary by Agilent

Technologies to service and/or maintain the products. (In so far as these items may contain proprietary or classified information, the customer shall assume full responsibility for safeguarding and protection from wrongful use.)

4 Routine operator maintenance and cleaning as specified in the Agilent Technologies

Operating and Service Manuals.

5 Consumables such as paper, disks, magnetic tapes, ribbons, inks, pens, gases, solvents,

lamps, filters, fuses, seals, etc.

Certification

Agilent Technologies certiﬁes that this product met its published speciﬁcations at the time of shipment from the factory. Agilent Technologies further certiﬁes that its calibration measurements are traceable to the United States National Bureau of Standards and Technology, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other International Standards Organization members.

Assistance

Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products.

For any assistance, contact your local Agilent Sales and Service Ofﬁce. For a list of contact information, see “Sales and Service Ofﬁces” on page ix.

Notices

The material contained in this document is subject to change without notice. AGILENT TECHNOLOGIES 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. Agilent Technologies inc. 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.

Agilent Technologies assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Agilent Technologies.

Restricted Rights Legend

If Software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as "Commercial computer software" as deﬁned in DFAR 252.227-7014 (June 1995), or as a "commercial item" as deﬁned in FAR

2.101(a) or as "Restricted computer software" as deﬁned in FAR 52.227-19 (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Agilent Technologies’ standard commercial licenseterms, and nonDOD Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as deﬁned in FAR 52.227- 19(c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as deﬁned in FAR52.227-14 (June 1987) or DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data. Copyright 200X Agilent Technologies Inc. All Rights Reserved.

Statement of Compliance

This product conforms to EN61010-1(1993) / IEC 1010-1(1990) +A1(1992) +A2(1994) / CSA C22.2 No. 1010.1(1993) 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.

iii

Electromagnetic Compatibility (EMC) Information

This product has been designed to meet the protection requirements of the European Communities Electromagnetic Compatibility (EMC) directive:

EN55011:1991 (Group 1, Class A) EN50082-1:1992

- IEC 1000-4-2 (1995) ESD

- IEC 1000-4-3 (1995) Radiated Susceptibility

- IEC 1000-4-4 (1995) EFT In order to preserve the EMC performance of this product, any cable which becomes worn

or damaged, must be replaced with the same type and speciﬁcation.

Sound Emission

Manufacturer’s Declaration

This statement is provided to comply with the requirements of the German Sound Emission Directive, from 18 January 1991.

This product has a sound pressure emission (at the operator position) < 70 dB(A).

❒ Sound Pressure Lp < 70 dB(A). ❒ At Operator Position. ❒ Normal Operation. ❒ According to ISO 7779:1988/EN 27779:1991 (Type Test).

Herstellerbescheinigung

Diese Information steht im Zusammenhang mit den Anforderungen der Maschinenlärminformationsverordnung vom 18 Januar 1991.

❒ Schalldruckpegel Lp < 70 dB(A). ❒ Am Arbeitsplatz. ❒ Normaler Betrieb. ❒ Nach ISO 7779:1988/EN 27779:1991 (Typprfung).

Declaration of Conformity

according to ISO/IEC Guide 22 and EN45014

Manufacturer’s Name: Agilent Technologies.

Declaration of Conformity

Manufacturer’s Address:

Agilent Technologies South Queensferry West Lothian, EH30 9TG Scotland, United Kingdom

Declares that the product

Product Name

Model Numbers: 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 23 September 1997

GSM MS Test Set

Agilent Technologies 8922M and 8922S

This declaration covers all options of the above products as detailed in TCF A-5951-9852-02

Electromagnetic Compatibility (EMC) Technical Construction File (TCF) No. A-5951-9852-02

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

Supplementary Information:

The product conforms to the following safety standards:

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

South Queensferry, Scotland 17 November 1997

Location Date R.M. Evans / Quality Manager

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

Safety Information

The following general safety precautions must be observed during all phases of operation 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. Agilent Technologies Inc. assumes no liability for the customer’s failure to comply with these requirements.

GENERAL

This product is a Safety Class 1 instrument (provided with a protective earth terminal). The protective features of this product may be impaired if it is used in a manner not speciﬁed in the operation instructions. All Light Emitting Diodes (LEDs) used in this product are Class 1 LEDs as per IEC 60825-1.

ENVIRONMENTAL CONDITIONS

This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the speciﬁcations tables for the ac mains voltage requirements and ambient operating temperature range.

BEFORE APPLYING POWER

Verify that the product is set to match the available line voltage, the correct fuse is installed, and all safety precautions are taken. Note the instrument’s external markings described under "Safety Symbols".

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cover must be connected to an electrical protective earth ground. The instrument must be connected to the ac power mains through a grounded power cable, with the ground wire ﬁrmly connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.

FUSES

Only fuses with the required rated current, voltage, and speciﬁed type (normal blow, time delay,etc.) should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or ﬁre hazard.

Safety Information

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of ﬂammable gases or fumes.

DO NOT REMOVE THE INSTRUMENT COVER

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made only by qualiﬁed service personnel.

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualiﬁed service personnel.

WARNING The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

Caution The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.

vii

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

Safety Symbols

The Instruction Documentation Symbol. The product 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 operating the equipment - protects against electrical shock in case of fault.

Frame or chassis ground terminal - typically connects to the equipment's metal frame.

Alternating current (AC)

Direct current (DC) Warning, risk of electric shock.

N L

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

Terminal for Neutral conductor on permanently installed equipment.

Terminal for Line conductor on permanently installed equipment..

The CE mark shows that the product complies with all relevant European Legal Directives.

The CSA mark is a registered trademark of the Canadian Standards Association, and indicates compliance to the standards deﬁned by them.

Indicates that a laser is ﬁtted. The user must refer to the manual for speciﬁc Warning or Caution information to avoid personal injury or damage to the product.

viii

Sales and Service Offices

Any adjustment, maintenance, or repair of this product must be performed by qualiﬁed personnel. Contact your customer engineer through your local Agilent Technologies Service Center. You can ﬁnd a list of local service service representatives on the web at:

http://www.agilent-tech.com/services/English/index.html You can also contact one of the following centers and ask for

a test and measurement sales representative.

Asia Pacific:

Agilent Technologies 19/F, Cityplaza One, 1111 King’s Road, Taikoo Shing, Hong Kong, SAR (tel) (852) 2599 7889 (fax) (852) 2506 9233

Sales and Service Ofﬁces

Japan:

Agilent Technologies Japan Ltd. Measurement Assistance Center 9-1, Takakura-Cho, Hachioji-Shi Yokyo, 192-8510 (tel) (81) 426 56 7832 (fax) (81) 426 56 7840

Australia/New Zealand:

Agilent Technologies Australia Pty Ltd 347 Burwood Highway Forest Hill, Victoria 3131 (tel) 1-800 629 485 (Australia) (fax) (61 3) 9272 0749 (tel) 0 800 738 378 (New Zealand) (fax) (64 4) 802 6881

Sales and Service Ofﬁces

Canada

Agilent Technologies Canada Inc. 5150 Spectrum Way, Mississauga, Ontario L4W 5G1 (tel) 1 877 894 4414

Europe:

Agilent Technologies Test & Measurement European Marketing Organisation P.O. Box 999 1180 AZ Amstelveen The Netherlands (tel) (31 20) 547 9999

Latin America:

Agilent Technologies Latin American Region Headquarters 5200 Blue Lagoon Drive, Suite #950 Miami, Florida 33126 U.S.A. (tel) (305) 267 4245 (fax) (305) 267 4286

United States:

Agilent Technologies Test and Measurement Call Center P.O. Box 4026 Englewood, CO 80155-4026 (tel) 1 800 452 488

In any correspondence or telephone conversations, refer to the power sensor by its model number and full serial number. With this information, the Agilent Technologies representativecan quickly determine whether your unit is still within its warranty period.

Agilent Technologies 8922M/S Documentation Description

Documentation Shipped with Your GSM Test Set

Agilent 8922M/S GSM Test Set Quick Start Guide.

This guide gives a brief description on how to make each of the measurements required to test a GSM mobile phone. More detailed descriptions are given in the Agilent 8922M/S

GSM Test Set User’s Guide.

Agilent 8922M/S GSM Test Set User’s Guide.

This guide contains information on how to set up the Agilent 8922M/S for making measurements and verifying performance. It also contains more detailed information on each of the screens, keys, and connectors, and how to use the IBASIC facilities available on the Agilent 8922M/S.

Agilent 8922M/S GSM Test Set Performance Test Software.

This 3.5 inch ﬂoppy disk allows you to verify the performance of the Agilent 8922. Instructions on how to use this are detailed in the Agilent 8922M/S GSM Test Set User’s

Guide.

Agilent 8922M/S GSM Test Set Programming Reference Guide.

This guide describes, in detail, each of the GPIB command sets for the Agilent 8922M/S.

Agilent 8922 Multi-Band Test System User’s Guide1.

This is a supplementary user’s guide that describes the additional features found with the Multi-Band test system. The test system is used for testing and making measurements of dual band mobiles.

1. The user’s guide is only available with the HP 8922M/S Option 010.

Typeface Conventions

Italics

Display Display text is used to show examples, ﬁelds, and prompts that are

PRESET

Soft keys Display text is used to show examples, ﬁelds, and prompts that are

Soft keys All software listings in this manual can be identiﬁed with this font.

Italic type is used for emphasis.

displayed on the Agilent 8922M/S screen. Keycaps on the Agilent 8922M/S keyboard are enclosed in boxes.

displayed on the Agilent 8922M/S screen.

xii

Installing Your Agilent 8922M/S

1-1

Installing Your Agilent 8922M/S

Using this Chapter

Use the following procedure to get the Agilent Technologies 8922M/S powered-up correctly. After completing this procedure, refer to the Quick Start Guide for an introduction to operating the Agilent Technologies 8922M/S and Chapter 2, “Making Measurements” for more extensive information on using the Agilent Technologies 8922M/S.

Equipment Supplied • Fuse Envelope and Fuse

• REF OUT/REF IN cable (Option 001 only)

• Power Cord

CAUTION To avoid potential injury, ensure that two people are employed in lifting the Agilent

8922M/S out of the box and for any other instrument moves.

NOTE: If you have the Agilent 8922M/S Option 010 Multi-Band Test System, refer to the

appropriate Agilent 8922 Multi-Band User’s Guide for more information on connection and operating differences.

1-2

Installing Your Agilent 8922M/S

Fuses and Power Cords

CAUTION Before plugging this instrument into the Mains (line) voltage, be sure the correct

voltage on the line voltage selection card has been selected.

Line Voltage and Fuse Selection

Figure 1-1 Voltage Selection Card and Fuse Installation

Other Fusing Non user replaceable fusing on the secondary of this instrument power supply are;

Verify that the line voltage selection card is matched to the power source (see Figure 1-1 on page 1-3). Order fuse Agilent part 2110-0083 (2.5 A 250 V, normal blow) for replacement.

Fuse Current Type Volatge

F1 5A F 5.0A H 250V F2 3A F 3.0A H 250V F3 10A F 10A 32V F4 3A F 3.0A H 250V F5 0.5A F 0.5A H 250V F6 3A F 3.0A H 250V

1-3

Power Cords

Installing Your Agilent 8922M/S

Fuses and Power Cords

Agilent Part

1-4

Agilent

Installing Your Agilent 8922M/S

Installation Overview

1 Connect a 1, 2, 5, 10, or 13 MHz signal to the REF IN. If you are using option

001, connect as shown, see Figure 1-2 on page 1-5, with the supplied cable (OPT 001 REF OUT to REF IN).

2 Connect the supplied power cord to the Agilent 8922M/S and power up the

instrument.

Power Source

Figure 1-2 Rear View Connections

1-5

Installing Your Agilent 8922M/S

Installation Overview

3 Access the CONFIG screen to customize the set-up of your Agilent 8922M/S.

This is done by:

• Moving to the CONFIG field in the bottom right-hand corner of the Cell Control screen, (the first screen that appears after power-up or after selecting

PRESET

). Rotate the cursor control knob (refer to “a”, see Figure 1-3 on

page 1-6) until you are on the CONFIG field.

• Selecting the CONFIG field by pushing the cursor control knob (diagram “b”, see Figure 1-3 on page 1-6).

Figure 1-3 Access CONFIG Screen

1-6

Installing Your Agilent 8922M/S

Installation Overview

4 To guarantee the correct operation of the Agilent 8922M/S with all mobile

phones, you should use a high-stability timebase. This step details how to conﬁgure the Agilent 8922M/S for use with either the

option 001, high-stability timebase, or an external reference signal. A If you have option 001 installed and wish to use this as your reference, ensure

that the OPT 001 REF OUT field in the Configure screen is set to On. Access the Reference field in the Configure screen and select 10 MHz.

B If you wish to use an external reference signal, set the Reference field to

1, 2, 5, 10, or 13 MHz according to the frequency reference you intend to use.

Figure 1-4 High-stability timebase set-up

To customize your Agilent 8922M/S further, refer to Chapter 4, Screens.

1-7

Installing Your Agilent 8922M/S

General Information

Operation and Storage Environment

Instrument Options Refer to Agilent 8922M/S Speciﬁcations in Chapter 3, Performance Veriﬁcation for

Specifications Refer to Agilent 8922M/S Speciﬁcations in Chapter 3, Performance Veriﬁcation for

Refer to General Speciﬁcations in the Agilent 8922M/S Speciﬁcations section of Chapter 3, Performance Veriﬁcation for information about the operation or storage environment.

information about instrument options.

instrument speciﬁcations.

1-8

Making Measurements

2-1

Making Measurements

Using This Chapter

Use this chapter to obtain an overview of how to operate the Agilent 8922M/S GSM Test Sets.

This chapter is divided into the following sections:

• Making Measurements

• Agilent 8922M/S Operating Modes - explains how to configure the Agilent 8922M/S so that measurements can be made.

• Measurements - details how to perform the many different measurements available on the Agilent 8922M/S.

• Advanced Features - advanced information for experienced users. To help you understand this chapter, you may wish to consult the following sources

of information:

• Quick Start Guide - This briefly explains the basic operating principles of the

Agilent 8922M/S including making a call and simple measurements.

• Typeface Conventions - Found at the front matter of this manual. This explains

how to interpret the different typefaces used in this manual.

• Field Types - Refer to Chapter 4, Screens. Explains in detail the different kinds

of “fields” or areas which are displayed on the screens. Fields are mainly used for measurement results, data entry and access to other screens.

• Screens -Chapter 4, provides more detailed information on each of the fields

contained within all of the screens available on the Agilent 8922M/S.

NOTE: If you have the Agilent 8922M/S Option 010 Multi-Band Test System, refer to the

appropriate Agilent 8922 Multi-Band User’s Guide for more information on making dual band measurements.

2-2

Making Measurements

Agilent Technologies 8922M/S Operating Modes

This section details the procedures necessary to control the Agilent 8922M/S and GSM mobile phone in each of the main operating modes. It is recommended that you read this section before attempting the “Measurements” section.

The Agilent 8922M/S GSM TestSets have three main modes of operation, these are:

• ACTIVE CELL

• TEST MODE

• CW GENERATOR

Active Cell The ﬁrst mode is the default mode and conﬁgures the Agilent 8922M/S as a GSM

Base Station emulator. This allows calls to be made from the Agilent 8922M/S to the mobile phone and vice versa. Measurements can then be made to verify the mobile phone’s performance.

Test Mode This mode is used when measurements need to be made on the mobile phone

without a call being set up.

CW Generator This mode conﬁgures the Agilent 8922M/S as a standard Continuous Wave (CW)

Signal Generator. This is used for test applications that require an unmodulated RF carrier.

2-3

Making Measurements

Agilent Technologies 8922M/S Operating Modes

To conﬁgure the Agilent 8922M/S to the desired operating mode, carry out the following instructions, referring to Figure 2-1 on page 4 for the position of the ﬁelds.

• Ensure (1) is set to mobile phone type you require (GSM900, E-GSM, DCS1800,

or PCS1900).

NOTE For use with DCS1800 or PCS1900, refer to the HP/Agilent 83220A/E Users Guide

which explains how to configure the Agilent 8922M/S to test other mobile phone formats.

• Use the knob to move the cursor to the lower field below the Operating Mode (2).

• Push the knob and select the desired Operating Mode (ACTIVE CELL, TEST MODE, or CW GENERATOR) from the menu which appears at the bottom right-hand side of the screen.

Figure 2-1 Agilent 8922M/S Operating Modes

In addition to the three main operating modes, there are three other modes available. These are:

• ACTIVE CELL+

• TEST MODE+

• CW GENERATOR+

These “+” modes have all the features of the other modes but include extra diagnostic information on the screen. This information is designed to help advanced users in fault-ﬁnding mobile phones.

2-4

ACTIVE CELL

Making Measurements

ACTIVE CELL

Making a Call From the Mobile Phone to the Agilent 8922M/S

This is the default mode after cycling the power or selecting . A functional mobile phone will lock on (camp on) to a signal which is produced by the Agilent 8922M/S. The characteristic of this signal appears in the BASE STATION ﬁelds, (1), see Figure 2-2 on page 2-6. These ﬁelds show the Channel number and the Amplitude of the signal. Once the mobile phone has camped on to the signal, it is possible to make a call between the mobile phone and the Agilent 8922M/S.

• Cycle the power on the Agilent 8922M/S or select .

• Insert a Test SIM card into the mobile phone. [The Test SIM (Subscriber Identity Module) holds the user’s customized information. Agilent supply both micro and standard Test SIMs.]

• Connect the mobile phone to the RF IN/OUT connector on the front panel of the Agilent 8922M/S.

• Switch on the mobile phone and wait for it to camp to the Agilent 8922M/S (most mobile phones display 001-01 when the mobile phone has camped).

• Dial any number on the mobile phone and press send.

The call set-up should now proceed. The CALL STATUS ﬁeld on the screen should display CONNECTED, (2), see Figure 2-2 on page 2-6. Once the call has been established, the following information is displayed:

• Peak Power transmitted by the mobile phone is displayed in the center of the screen.

• In the CELL STATUS area, (3), see Figure 2-2 on page 2-6, the mobile phone reports its:

• Transmit power level (TX Lev)

• Received level (RX Lev)

• Received signal quality (RX Qual)

• Confirmation of the Traffic Channel and Timeslot is displayed to the left of the mobile phone reports.

PRESET

If the call does not proceed, there may be a problem with the mobile phone. Refer to “Test Mode” in this chapter which explains how to conﬁgure the Agilent 8922M/S to troubleshoot the mobile phone. When a call is connected, any speech received from the mobile phone is echoed back by the Agilent 8922M/S, into the mobile phone with a 0.5 second delay. This allows provisional checking of the mobile phone’s audio sections by speaking into the mobile phone and listening for the echo of your voice.

2-5

Making Measurements

ACTIVE CELL

Figure 2-2 Active Cell Mode

Making a Call From the Agilent 8922M/S to the Mobile Phone

NOTE The Network number cannot be used to make a call. The Network Telephone number

To call (or page) the mobile phone from the Agilent 8922M/S, it is necessary for the Agilent 8922M/S to know the number of the SIM in the mobile phone. [This number is the International Mobile Subscriber Identity (IMSI). This and other information is stored on the SIM card.]

is allocated to the SIM and is used in a real network to page the IMSI.

There are two ways the Agilent 8922M/S can receive this information:

• Make a call from the mobile phone to the Agilent 8922M/S. Once the call is originated from the mobile phone, the Agilent 8922M/S

automatically reads the IMSI on the SIM card. If the previous call on the Agilent 8922M/S was made with the SIM card inserted in the mobile phone, and the mobile phone is camped to the Agilent 8922M/S, the mobile can be called by

pressing .

• Enter the MS Information screen and enter the IMSI into the Agilent 8922M/S manually.

2-6

ORG CALL

Making Measurements

ACTIVE CELL

Press the following keys to do this:

SHIFT CELL CONFIG

• , (MS INFO)

• Move the cursor to the Paging IMSI field and enter the IMSI using the numeric data entry keypad.

CELL CNTL ORG CALL

•,

Performing a “location update” from the MS INFO screen allows the Agilent 8922M/S to update the IMSI. This can be done by either:

• changing the Current location parameters and waiting for the mobile phone to re-camp.

• settingIMSI Attach/Detach to On before poweringonthe phone. When the phone camps its IMSI is set on the MS INFO screen and a call can be made from the Agilent 8922M/S.

Changing Channel, Timeslot, and the Transmit Level

You can alter the parameters of the call before the call has been set up, or during a call. They are displayed on the right-hand side of the screen under MOBILE PHONE, (4), see Figure 2-2 on page 2-6. The parameters are:

• Channel

• Transmit Level (TX Level)

• Timeslot

Channel To change channel, highlight the ﬁeld and enter a new channel number from the keypad. There is no interruption of communication between the Agilent 8922M/S and the mobile phone. For additional information on valid Absolute RF Channel Numbers (ARFCNs), consult the speciﬁcations in Chapter 3.

TX Level This is a coded number used by the Agilent 8922M/S to command the mobile phone to transmit at a particular power. When the TX Level is changed, two things happen:

• The mobile phone should change its transmitted power.

• The Amplitude field in the Expected Input area of the screen, (5), see Figure 2-2 on page 2-6, automatically adjusts to the nominal value defined by the TX Level field. This allows the RF analyzer in the Agilent 8922M/S to align itself with the mobile phone’sexpected output amplitude. If thesignal is not within 3 dB of theexpected amplitude, it isnecessary to modify the Amplitude field so that it is within 3 dB. Directly entering a value in the Amplitude field does not change the transmitted level code transmitted to the mobile phone.

2-7

Making Measurements

ACTIVE CELL

There may be many reasons for the measured level not being close to the expected level. The two most likely are that, either, the mobile phone is not operating correctly, or, there is some power loss between the Agilent 8922M/S RF IN/OUT connector and the mobile phone. If you suspect it is the second case, you can compensate the Agilent 8922M/S generator settings and measurement results for external losses or gains. The compensation is carried out in the CONFIGURE screen which is accessed using the CONFIG ﬁeld on the bottom right-hand side of the screen, (6), see Figure 2-2 on page 2-6. Refer to Chapter 4, Screens for further information.

Timeslot To change the timeslot, highlight the ﬁeld and enter a new timeslot value from the keypad. The timeslots can vary from 2 to 6. (Timeslots 0, 1, and 7 are reserved for maintaining communication between the Agilent 8922M/S and the mobile phone.)

NOTE While the Active Cell is selected, the three MOBILE PHONE parameters are also

available on the bottom right-hand side of all measurement screens. This provides control of the mobile phone during measurements.

2-8

Making Measurements

TEST MODE

To enter this mode, select TEST MODE as described in the section titled “Agilent 8922M/S Operating Modes”.

In TEST MODE, the Agilent 8922M/S no longer controls the mobile phone. The TEST MODE is used when it is not desired, or not possible, to set up a call between the Agilent 8922M/S and the mobile phone.

The MOBILE PHONE area available in Active Cell controls three functions simultaneously:

• The traffic channel transmitted by the Agilent 8922M/S.

• The traffic channel transmitted by the mobile phone.

• The corresponding channel used by the Agilent 8922M/S to measure the mobile phone.

In Test Mode, these functions are now separated. The trafﬁc channel transmitted by the Agilent 8922M/S is now controlled by the Traffic Chan parameters, (1), see Figure 2-3 on page 2-10. The mobile phone’s transmission must be controlled manually using the mobile phone manufacturer’s service and test modes. The Agilent 8922M/S measurements are controlled by the ﬁelds below Expected Input, (2), see Figure 2-3 on page 2-10.

These ﬁelds are:

• Channel

• TX Level

• Burst Type

2-9

Making Measurements

TEST MODE

NOTE While the Test Mode is selected, the three MEASURE ON parameters are also

available on the bottom right-hand side of all measurement screens. This provides control of the Expected Input parameters during measurements.

Figure 2-3 Test Mode

Mobile Phone Transmitter Testing Using Test Mode

To measure an incoming signal from the mobile phone’s transmitter, perform the following steps:

• Select TEST MODE.

• In the Expected Input area, (2), see Figure 2-3 onpage 2-10, enter the GSM

channel number of the signal to be measured. This will automatically update the input Frequency field below it, (3), see Figure 2-3 on page 2-10. If a frequency needs to be measured which does not correspond to a standard GSM channel, enter the non-standard value into the Frequency field. This value can be anywhere from 10 MHz to 1000 MHz. A direct entry in the Frequency field over-rides the frequency defined by the Channel field above.

• Enter the expected transmit level of the mobile phone in the TX Level field. This will automatically update the Amplitude field below with the equivalent TX level represented in dBm. If a non-standard input level is expected, enter the value directly into the Amplitude field, this overrides the TX Level field above.

• Entertheexpected Colour Code of the input signal. The Colour Codeisafunction of the central “midamble” of the transmitted burst and is needed so that measurements are correctly synchronized to the received burst. If the Colour

2-10

Code is not known, it can be determined and corrected from measurements described later. Refer to the “Advanced Features” section mentioned later in this chapter.

NOTE In the Active Cell mode, the Colour Code is automatically set.

Once these have been selected, the Agilent 8922M/S is ready to measure incoming signals of the type speciﬁed. The mobile phone should be set up to generate a corresponding test signal to the one expected. This will require access to the mobile phone manufacturer’s servicing or test modes.

Making Measurements

TEST MODE

Mobile Phone Receiver Testing Using Test Mode

It is possible to analyze the mobile phone’s response to the Agilent 8922M/S Broadcast Channel (BCH), by varying the BCH number and amplitude, (4), see Figure 2-3 on page 2-10. TEST MODE provides the Agilent 8922M/S with a “forced” trafﬁc channel (TCH) generator which can be turned on and off without the need for any signaling or the presence of a mobile phone. A forced TCH can be generated on any channel in the GSM Base Station range and is enabled by the On/ Off toggle ﬁeld (1) below the Trafﬁc Chan or the and

ORG CALL END CALL

keys. The presence of both the BCH and forced TCH signals from the Agilent 8922M/S

allows the mobile phone’s receiver to be stimulated with signals identical to those used on a real call. These signals can be used in conjunction with the mobile phone manufacturer’s service and test modes to help measure and troubleshoot the mobile phone. With these features, it is possible to make bit error rate measurements and test the mobile phone’s receiver sensitivity when there is no call set up.

2-11

Making Measurements

CW GENERATOR

To enter this mode, select CW GENERATOR as described in the section titled “Agilent 8922M/S Operating Modes”. The CW Generator mode has the same measurement capabilities as the Test Mode but replaces the GSM BCH and forced TCH signals with a single unmodulated RF carrier. The frequency and amplitude of the Continuous Wave (CW) signal is controlled by the Channel, Amplitude, and the Frequency ﬁelds (1). When a GSM channel number is entered in the Channel ﬁeld, this automatically updates the generator Frequency ﬁeld below it. If it is necessary to generate a non GSM channel frequency, enter a value directly into the frequency ﬁeld. This range varies from 10 MHz through 1000 MHz. A direct frequency entry over-rides the Channel ﬁeld above. The unmodulated RF signal can be used for any general purpose application and can be particularly useful for checking some aspects of the mobile phone’s receiver where a CW signal is needed.

Figure 2-4 CW Generator

2-12

Making Measurements

Measurements

The measurements available on the Agilent 8922M/S can all be accessed from the cell control screen by selecting a measurement ﬁeld under MEASUREMENTS, (see Figure 2-5 on page 2-13) and pushing the knob.

GSM Specific Measurements

Ancillary Measurements

The measurements available are:

• Peak Carrier Power

• Phase and Frequency Error

• Power Ramp Mask

• Bit Error Rate

• Output RF Spectrum (modulation or ramping, Option 006 only)

You can also use the toolkit capabilities of the Agilent 8922M/S. These additional measurements are:

• Spectrum Analyzer (Option 006 only)

• Scope

• Audio Measurements

• CW Measurements

GSM Speciﬁc Measurements

Figure 2-5 Agilent 8922M/S Measurements

Ancillary Measurements

2-13

Making Measurements

Measurements

After making one type of measurement, another can be made by simply pressing

CELL CNTL

and, using the knob, selecting the next measurement of your choice.

Peak Carrier Power Measurement

NOTE Select the Pwr Zero field, disconnect external source and lower BCH power, (3),

The peak transmitter carrier power averages the transmitter carrier power for a single burst. This average is calculated over the time that the data information bits are transmitted.

see Figure 2-6 on page 2-14, to zero the power meter before any signal is applied.

Method

The peak transmitter carrier power value is displayed on the cell control screen. After you have set up a call (Active Cell) or manually aligned the Agilent 8922M/S to the mobile phone (Test Mode/CW Generator), the Peak Power reading is displayed in the center of the screen (1).

Below the CALL STATUS area of the cell control screen are reports from the mobile phone. These appear only when using Active Cell. They indicate the TX Level which the phone is transmitting and the RX Level and RX Quality of the received signal, (2), see Figure 2-6 on page 2-14.

Figure 2-6 Peak Power Measurements

2-14

Making Measurements

Measurements

Phase and Frequency Error Measurement

NOTE The test is run automatically when the screen is selected.

Phase error and frequency error are measures of the modulation and noise performance of the radio’s transmitter path.

Method

Select the PHASE FRQ ﬁeld on the cell control screen to access the phase and frequency measurements.

The measurement ﬁelds in this screen are RMS Phase Error, Peak Phase Error and Frequency Error (1), see Figure 2-7 on page 2-15.

The Agilent 8922M/S input sensitivity (2) can be varied, if necessary, to ensure that the input signal level matches the Agilent 8922M/S RF Analyzer. Valid measurements are only made when the signal is within 3 dB of the RF Analyzer setting.

The Agilent 8922M has the option of using multi-burst measurements (4). This gives the ability to make several phase and frequency measurements using more than one burst. For more information refer to Chapter 4, Screens, Phase and Frequency Error screen.

Figure 2-7 Phase and Frequency Error Measurements

Two additional screens in the phase and frequency measurement section can be revealed if you select (3).

2-15

Making Measurements

Measurements

These are:

• PHASE ERR - this displays the phase error graphically. The phase error trace is displayed using an autoscaling phase error axis versus data bits (numbered 0 through 147).

• DATA BITS - this screen allows you display a screen which details the values of the 148 bits in the timeslot (including midamble). If a known test signal is being used, the reception of these bits can be verified.

Power Ramp Mask Measurements

To avoid unwanted interference and to ensure successful reception at the Base Station, the mobile phone’stransmitted signal must conform to GSM standards. The purpose of the power ramp is to display the pulsed signal and verify that it conforms to these standards.

Method

Selecting PWR RAMP on the cell control screen gives you access to the power ramp measurement screens.

The marker (1), see Figure 2-8 on page 2-16 can be used to make a measurement at a discrete point in time along the signal trace. The amplitude at this point is displayed in the top left-hand corner of the screen.

Figure 2-8 Power Ramp Measurements

2-16

Making Measurements

Measurements

The power ramp measurements are divided into three screens where you can view different parts of the signal and one screen which displays a series of amplitude values at various times during the burst. These screens can be revealed by highlighting and selecting from the View ﬁeld (2):

• Rise Edge - displays the top 30 dB of the rising section of the waveform.

• Top 2 dB - displays the signal during the middle part of the burst allowing analysis of the ripple of the signal.

• Fall Edge - displays the signal during the falling edge of the burst allowing analysis of the fall time of the signal.

• Summary - details the amplitude measurements made at the times selected in the 12 time fields. You can choose your own time-positions, or use the default settings.

The sensitivity of the Agilent 8922M/S receiver can be varied (3) allowing you to verify whether the input signal level matches the Agilent 8922M/S RF Analyzer. Valid measurements are only made when the signal is within 3 dB of the RF Analyzer setting.

Measurement Summary

The Measurement Summary ﬁeld on the DSP Analyzer Ampl Main screen displays whether HI/LO limits set for the measurement display ﬁelds, (Ampl1-12, pk+ ﬂatness, or pk- ﬂatness) were exceeded in the last measurement. The possible Measurement Summary displays are:

Failed

One or more measurement limit was exceeded.

Passed

No measurement limits were exceeded.

- - - -

No measurement limits are set, or, all of the Ampl and Pk measurement displays are turned off.

A blank field

The blank ﬁeld is displayed when the measurement is armed. It will remain blank until the measurement is complete.

Refer to “Pulse Measurements” within this section for a description of Pulse Measurements. These measurements are available with option 006 only.

2-17

Making Measurements

Measurements

Pulse Measurements (Available if Option 006, Spectrum Analyzer, is Fitted)

If you have option 006 (spectrum analyzer) installed, you can make measurements on the lower portion of the pulse. These measurements can be accessed from the Power Ramp screens.

• The main measurements, Pulse On/Off Rise and Pulse On/Off Fall are displayed

at the top of the screen (1), see Figure 2-9 on page 2-18

• The sensitivity of the Agilent 8922M/S receiver can be varied (2) allowing you

to verify whether the signal still falls within the boundaries of the GSM power mask.

Figure 2-9 Pulse Measurements

The Agilent 8922M/S provides three pulse measurements which can be selected using View (3). These are:

• Pulse - pulse on/off ratio measures the ratio of the average transmitter- power (pulse on) to a specified time-position when power is reduced (pulse off). The default settings are 28µs before bit 0 and 28µS after bit 147.

• Puls Rise - this screen displays the signal during the initial rise of the pulse.

• Puls Fall - this screen displays the signal during the final fall of the pulse.

2-18

Making Measurements

Measurements

Bit Error Rate Measurement

NOTE There are two sets of results displayed.

The Bit Error Rate measurement allows you to test the sensitivity of the mobile phone’s receiver. By reducing the signal transmitted by the Agilent 8922M/S, you can test the ability of the receiver to accurately decode its incoming signal. Data bits that are decoded are sent back to the Agilent 8922M/S. The Agilent 8922M/S compares them to original signal that was sent out and the differences are derived from this. The audio echo function that works in the Cell Control screen is turned off when making a BER measurement.

Method

To run a bit error rate test, select the BIT ERROR ﬁeld in the cell control screen. This reveals the bit error measurement screen.

This test will run automatically if you set the Single/Cont ﬁeld to CONT.To run a test set the Run/Stop ﬁeld to RUN. This toggle ﬁeld start/stops the BER test (1) ratio, see Figure 2-10 on page 2-19.

• Intermediate Results - this is a running total of the bit errors as the bits are being

tested (2), (this is useful where a large number of bits are being tested).

• Final Results - this shows the completed BER (3). This is displayed after all the

bits have been tested.

Figure 2-10 Bit Error Rate Measurement

2-19

Making Measurements

Measurements

By varying the Base station Amplitude ﬁeld (4), you can test the mobile phone’s receiver sensitivity. Actual results can be compared with the values reported by the radio.

NOTE If the Base Station amplitude is lowered too much, the radio will lose the call. This

will need to be re-established by increasing the base station amplitude, returning to the cell control screen, and originating the call before you can continue measurements.

NOTE Not all phone types support burst-by-burst BER measurements.

OutputRFSpectrum Measurements (Available if Option 006, Spectrum Analyzer, is Fitted)

The Output RF spectrum measurement shows the spectral power (due to the effects of ramping or modulation) at a speciﬁed frequency offset. These are relative measurements that compare the result at the offset frequency with the value at the center frequency. You can also view the output RF spectrum trace from this screen.

Method

Select OUT RF SP in the cell control screen. To make a measurement, do the following:

• Ensure the Freq Offset is set to zero (1), see Figure 2-11 on page 2-21.

• Select Ramp Ref or Mod Ref (2) (depending on whether you want to make a ramping measurement or a modulation measurement).

2-20

Making Measurements

Measurements

This sets the reference level to which the offset frequency values are compared.

• Select Ramping or Modulation (3).

• Set your Freq Offset value (4).

2,3

Figure 2-11 Output RF Spectrum Measurements

• The trace of the output RF spectrum can be viewed if you highlight View and

select Trace (5).

OutputRFSpectrum MeasurementsUsing a 3-Pole Synchronously TunedMeasurement Filter

GSM Recommendation 11.10 and 11.20 set the requirements for the out-of-channel performance of base station and mobile station transmitters with the Output RF Spectrum speciﬁcation. The speciﬁcation calls for the measurement of transmitted energy at several offsets from the carrier frequency. Two types of measurements are required:

• Check the interference due to modulation.

• Check the interference due to ramping of the signal amplitude (switching transients).

Limits are speciﬁed for each type of measurement at speciﬁed frequency offsets. The GSM speciﬁed limits are based on a 5-pole synchronously tuned measurement ﬁlter.

1,4

2-21

Making Measurements

Measurements

In the Agilent 8922, Output RF Spectrum measurements are made using a 3-pole synchronously tuned measurement ﬁlter. The measurement results will differ from measurements using a 5-pole ﬁlter.

The difference between measurements of the “ideal” signals using a 3-pole ﬁlter and a 5-pole ﬁlter are shown in Table 1 and Table2. These values are added to the GSM speciﬁcations to obtain equivalent limits for Output RF Spectrum measurements using 3-pole synchronously tuned measurement ﬁlter. The adjusted Output RF Spectrum limits are based on a 3-pole ﬁlter are shown in Table 3 and Table 4.

Table 1 3-Pole Speciﬁcation Difference Output RF Spectrum due to Modulation

Offset from Carrier (kHZ)

100 200 250 400 600 to

1800

Difference (dB) 0 2.5 1.0 9.0 0

Table 2 3-Pole Speciﬁcation Difference Output RF Spectrum due to Switching

Offset from Carrier (kHZ)

400 600 1200 1800

Difference (dB) 6420

NOTE It is important to note that these values are estimates based on simulation and

measurements. They are intended to allow the user to estimate their transmitters conformance to GSM Output RF Spectrum requirements.

2-22

Making Measurements

Measurements

Table 3 Adjusted Limits Based on 3-Pole Filter Output RF Spectrum Due to

Modulation

Power Control Level

0 (43 dBm) 0 dB 0.5 dB -27.5 dB -32 dB -51 dB -70 dB 0 (39 dBm) 0 0.5 -27.5 -32 -51 -66 0 (37 dBm) 0 0.5 -27.5 -32 -51 -64 ≥ 5

(≤ 33 dBm)

Table 4 Adjusted Limits Based on 3-Pole Filter Output RF Spectrum Due to Switching

PowerLevel(dBm) Offset from Carrier (kHZ)

43 -3 dB -17 dB -19 dB -24 dB 41 -5 -17 -19 -24 39 -7 -17 -19 -24 37 -9 -17 -19 -24

0 100 200 250 400 600 to

0 0.5 -27.5 -32 -51 -60

400 600 1200 1800

Offset from Carrier (kHZ)

1800

35 -11 -17 -19 -24 33 -13 -17 -19 -24 31 -15 -19 -21 -26 29 -17 -21 -23 -28 27 -17 -22 -25 -30 25 -17 -22 -27 -32 23 -17 -22 -29 -34 ≤ 21 -17 -22 -30 -36

2-23

Making Measurements

Measurements

Spectrum Analyzer (Available if Option 006, Spectrum Analyzer, is Fitted)

NOTE The spectrum analyzer can detect very low power signals where Active Cell and

NOTE If both the input and output are set to RF IN/OUT, large errors in measured signal

The spectrum analyzer allows you to view the mobile phone’s signal over a wide dynamic range. It also allows you to view any adjacent interference which may exist.

even Test Mode cannot operate. Broken cable or connectors can be found using this function.

Method

Select SPEC ANL in the cell control screen. Selecting (1) provides access to other functions of the spectrum analyzer. These are:

• Main - the default screen has basic spectrum analyzer functions, see Figure 2-12 on page 2-25.

• RF Gen - this controls the RF generator in the Agilent 8922M/S. The generator signal can be fed back into the spectrum analyzer for signal confirmation. The Aux RF OUT port should be connected to the RF In/Out, and the RF Output set to “Aux RF OUT”.

level will be seen.

• Marker - this screen allows you to control the marker for the input signal.

• Auxiliary - the auxiliary screen controls theinputs and the attenuator settings.

2-24

Making Measurements

Measurements

NOTE The RF Generator and spectrum analyzer can be tuned to different frequencies

allowing the inspection of the IF signals inside the mobile phone.

Figure 2-12 Spectrum Analyzer Measurement

Use the MeasReset (2) to reset the trace and measurements in the Agilent 8922M/ S. This is useful if you are using the Max Hold ﬁeld (3).

The resolution bandwidth of the spectrum analyzer is automatically coupled to the frequency span. Reducing the span to less than 200 kHz can be useful when checking the mobile phone’s transmitter.

2-25

Making Measurements

Measurements

Scope The oscilloscope function of the Agilent 8922M/S allows you to view the

demodulated signal from the mobile phone. This can be used for fault-ﬁnding in the audio path.

Select SCOPE in the cell control screen to gain access to the oscilloscope function of the Agilent 8922M/S.

Selecting (1), see Figure 2-13 on page 2-26, gives access to other functions of the oscilloscope. These are:

• Main - gives you the basic oscilloscope functions for viewing and measuring the trace.

• Trigger - allows you to trigger the input signal from a variety of sources.

• Marker - offers you the capability to measure the voltage at discrete points in time along the trace. The result is shown in the top right-hand corner of the screen. You may find it helpful to use the , , (HOLD) feature when using the marker.

SHIFT

Figure 2-13 Oscilloscope Measurements

Use the MeasReset (2) to reset the trace and measurements in the Agilent 8922M/ S. This is useful for single triggered measurements.

Set AF Anl In (3) to change the source of the signal being directed to the Audio Analyzer Input. Refer to Screens, Chapter 4 for further information.

2-26

Making Measurements

Measurements

Audio The audio function measures the audio frequency and voltage of the demodulated

signal from the mobile phone or from a number of other sources selectable using AF Anl In (5), see Figure 2-14 on page 2-27.

Select AUDIO in the cell control screen to gain access to the audio function of the Agilent 8922M/S.

The measurements of the audio voltage and frequency commence within a short time of the screen being accessed.

The ac voltage (1) and the audio frequency (2) are the two main measurements made in this screen. Additional measurements, such as DC Level, can be made by selecting the AF Freq ﬁeld. (2). The audio frequency generator (3) is used to generate an audio signal from dc up to 25 kHz. The AF analyzer ﬁelds sets the conditions for measuring the audio signal (4).

Figure 2-14 Audio Measurements

2-27

Making Measurements

Measurements

CW Measurement The CW Measurement screen displays the carrier frequency and power of a

continuous (non-pulsed) signal. The CW Power measurement offers a greater dynamic range than is available when making pulsed measurements.

CW Power is a broadband measurement. The CW Frequency measurement is obtained using a tuned, selective input. The RF analyzer should be set to within 500 kHz of the expected signal frequency.

In the GSM band, the value that is entered should be set to the nearest 100 kHz. Select CW MEAS in the cell control screen to gain access to the power measurements of the Agilent 8922M/S.

The CW measurements are made automatically when you access the screen. The CW Frequency ﬁeld (1), see Figure 2-15 on page 2-28, displays the carrier

frequency of the signal and CW Power (2) shows the power of the carrier signal. It is also possible to display the difference between the measured frequency and the value selected by choosing CWFreqErr from ﬁeld 1.

Figure 2-15 CW Measurements

These measurements can be reset using MeasReset. Select Pwr Zero before power is applied to zero the power meter in the Agilent 8922M/S.

2-28

Making Measurements

Measurements

NOTE Although CW Measurements is a broadband measurement, it uses calibration data

that relies on the expected input frequency being set correctly. The Power Detector is connected so that it will only make measurements on signals present at the RF In/ Out port.

2-29

Making Measurements

If You Have Problems with a Measurement

This section tells you what to do if either of the following screen display events occurs:

• Message Line Messages (on the top of the screen).

• Is a Message Line displayed at the top of the screen.

• Possible Solutions to Message Line Errors.

• Sync Status Messages

• Is an Error Message Displayed in the Sync Status Field.

Refer to Chapter 7, “Messages”, for more information.

Is a Message Line displayed at the top of the screen?

At position 1, see Figure 2-16 on page 2-31, a message line appears if:

• Attempt To Arm or Query an Inactive Measurement - check that a measurement has been selected from the To Screen.

• Trigger too late, decrease trigger delay - See Trigger Timing B

• Trigger too early, increase trigger delay - See Trigger Timing B

• Measurement Armed, awaiting trigger - See Trigger Timing A

2-30

Making Measurements

If You Have Problems with a Measurement

Figure 2-16

2-31

Making Measurements

If You Have Problems with a Measurement

Possible Solutions to MessageLine Errors

The signal processing hardware that is used to generate measurement results has to be told when to take data samples. If the trigger to do this is misaligned with the signal, there may be errors in the results that are displayed.

Trigger Timing A

Check if the trigger is being received.

On the MEAS SYNC screen (press to gain access), check if the correct burst type has been defined.

Trigger Timing B

Check if the trigger is being received at the correct time.

The First Bit field (A) , see Figure 2-17 on page 2-32, on the Phase Freq: Data Bits screen displays the time difference between when a trigger is being received and when the first bit of a burst occurred. The time difference is only valid if FMErrCount is 0. The timing difference can be corrected by altering the trigger delay (B).

MEAS SYNC

Figure 2-17

2-32

Trigger Range For Pulsed RF

Making Measurements

If You Have Problems with a Measurement

2-33

Making Measurements

If You Have Problems with a Measurement

Is an Error Message Displayed in the Sync Status field?

The sync status ﬁeld displays an error message for the following errors:

• Bad Sync - demodulation error, perform a Phase/Frequency error measurement to identify which of the Sync Status error listed below may be the possible problem.

• FM Errors - see solutions 1, 2, 3, 4

• Short Burst - see solutions 1, 4

• Level Late - see solutions 1, 2, 3, 4

• Level Short - see solutions 1, 2, 3, 4

• Low Level- see solution 3

• RF Ovrload - see solution 3

2-34

Making Measurements

If You Have Problems with a Measurement

Possible Solutions to Sync Status Errors

Solution 1 - Trigger Timing

Check if the trigger is being received. On the MEAS SYNC screen (press to gain access), check if the correct burst type has been defined. On the Data Bits screen:

A The First Bit field on the Phase Freq:Data Bits screen displays the time

difference between when a trigger is being received and when the first bit of a burst occurred (A). The time difference is only valid if FMErrCount is 0.

B Check the delay in the Trig Delay field (B).

MEAS SYNC

Figure 2-18

2-35

Making Measurements

If You Have Problems with a Measurement

Solution 2 - Midamble Sync

On the MEAS SYNC screen (press to gain access),

• Check the definition of the signal’s burst type (A).

• Check the Burst Sel field (B).

MEAS SYNC

Check the bit pattern of your measurement

Perform a Data Bits measurement (D). An “M” will display under the bits that are identified as the midamble bits.

2-36

Making Measurements

If You Have Problems with a Measurement

Solution 3 - Level

Check the following fields on the RF Generator/RF Analyzer screen (press

SHIFT CELL CNTL

3 Pulse field (a), (if signal is pulsed) Ext or Hop Trig should be selected. 4 Amplitude field (b), for the expected amplitude 5 Frequency field (c), for the correct frequency. 6 RF Input field (d), for the correct connector choice. 7 AGC Mode field (e). If either Open or Auto is the selected mode, check the

Check the actual amplitude of the input signal. Perform a Peak Carrier Power measurement.

, , (RFG/RFA) to gain access).

value in the Open Loop DAC (f) Value field. If Closed is the selected mode, check that the burst is repetitive (at least one timeslot every two frames).

2-37

Making Measurements

If You Have Problems with a Measurement

Solution 4 - Amplitude Envelope

• Check if the Pulse Amplitude is ± 1 dB of the expected value during the useful part of the burst.

If FM Errors:

Perform a Phase Freq:Data Bits measurement. Dashes (a) will display under the bits where the power is too low.

If No FM Errors:

Perform pulse demodulation measurements. Connect PULSE (DEMODULATION OUT) connector to SCOPE IN (MEASURE) connector on the front panel.

---------

2-38

Making Measurements

Advanced Features

Other Screens The screens mentioned in this section are not necessary for simple measurement of

mobile phones as the work is done by the functions mentioned previously. However, the advanced user may ﬁnd it worthwhile to know what these screens are and what they are capable of doing.

• RF Generator/RF Analyzer - this screen controls the Agilent 8922M/S RF

generator and RF analyzer. Thisscreen can be accessed bypressing the following keys:

SHIFT CELL CNTL

• , , (RFG/RFA)

• MS Information - the MS INFO (Mobile Subscriber Information) screen gives

you access to the information about the mobile phone itself. A Location Update can be verified from this screen. This screen can be accessed by pressing:

SHIFT CELL CONFIG

• , , (MS INFO)

• Cell Configuration - the CELL CONFIG screen gives you access to the control

parameters for the configuration of the cell. This screen can be accessed by pressing:

CELL CONFIG

•

• CellControl2 - gives you the capabilityto control the additional cell parameters.

This screen is relevant in the set up of a call. This screen can be accessed by highlighting the More field in any main screen and selecting CELL CNTL2.

• Hopping - the hopping screen allows you manual control of the hopping

frequencies. This feature is only available in the Agilent 8922G compatibility mode.

• Logging - the logging screen allows control over the Protocol Interface port on

the rear panel (option 003). To access this screen, highlight More and select LOGGING.

• Configuration - the configuration screen is a full instrument control screen

which allows you to set up the Agilent 8922M/S. Screen set up, compatibility mode, radio type as well as other miscellaneous pieces of information are contained on this screen. To access this screen, highlight More and select CONFIG.

• I/OConfiguration - the I/Oconfiguration screen allows you to set up the general

interface of the instrument, such as printer options. This screen can be accessed by highlighting the More field in any main screen and selecting I/O CONFIG.

2-39

Making Measurements

Advanced Features

• SMS Cell Broadcast - the SMS CB screen allows you to test whether the mobile phone is capable of correctlyreceiving and displaying a message sent from a base station using the Short Message Service (SMS) Cell Broadcast protocol. This screen can be accessed by highlighting the More field in any main screen and selecting SMS CB.

Using RF Rise Triggering

Effect of the RF Generator on RF Analyzer Measurements

When using RF Rise triggering of measurements, the Trigger Delay should be adjusted so that the wanted data is captured during the sampling process. The actual measurement is made at the Trigger Delay time after the RF Rise. When changing from RF Rise triggering to another trigger mode, the Trigger Delay should be adjusted to the appropriate value as the default Trigger Delay is not automatically restored.

Example: In the Agilent 8922M/S, when using the RF Rise, a Trig-

ger Delay of 0 is recommended. When changing from RF Rise to Ext Demod trigger mode, the default value of

473.4T should be re-entered for Trigger Delay. The value 473.4T is derived from the 468.75 bits of delay

between downlink and uplink plus the 4.7 bits of modulation delay inside the Agilent 8922M/S. All timing is referenced to the beginning of bit zero on the downlink TCH timeslot, (DCH or BCCH timeslot if TCH is not active.)

When the RF Generator is set to a high level relative to the analyzer RF input, some error may be introduced in the analyzer’s power detector. This is due to the isolation limits between generator and analyzer on the RF IN/OUT port. This only occurs when the RF Generator and RF Analyzer share the RF IN/OUT port. If the RF Generator uses the AUX RF OUT port, no error occurs.



Error 10LOG 10

   

RFin 20–



--------------------------



RFgen 14+



-------------------------------



RFin 20–()– dBm=

RFin is the amplitude in dBm of the signal into the RF IN/OUT port. Normally the setting in dBm of the RF Analyzer Amplitude. RFgen is the setting in dBm of the RF Generator.

Because the two components are not always in phase, the actual error will often be slightly less.

2-40

Making Measurements

Advanced Features

Power Ramp Setting Time

Peak Carrier Power Measurement, Assumptions And Algorithm

The mobile transmitter output ramp should settle so that it complies with the power mask (GSM Rec 11.10) by the time output level calibration is done in the manufacturing process. The power mask is displayed in the Power Ramp screens.

Peak Carrier Power measurement method is not made to GSM Rec. 11.10. If you need to make a measurement to this speciﬁcation, go to the Power Ramp Summary screen. The ﬁeld in the top right-hand corner displays the Peak Carrier Power to GSM Rec. 11.10. Refer to PWR RAMP: SUMMARY screen (item 5) for a description.

The algorithm for the Peak Carrier Power measurement is based on the use of a fast sampler taking continuous asynchronous measurements of the power detected at the RF IN/OUT port.

The sampler accumulates 75µS sample bins containing the maximum power observed during the period and the minimum power observed during the period. Sampling rate is 10 MHz. The maximum and minimum values observed are based on 750 individual samples within the period.

A trigger is provided at the middle of bit 0 of the burst. (When using RF Rise triggering, the actual trigger may occur several bits earlier due to the ramp up of the burst.) In response to this trigger, the following 6 sample bins (0 - 5) from the sampler are saved and reported to the measurement processor.

Timeslot

0µS

577µS

Mobile Burst

Amplitude

Trigger

Sample Bins

-2 -1 0 1 2 3 4 5 6 7 8 9 375µS Window

75µS/sample_bin

2-41

Making Measurements

Advanced Features

The beginning of the 0 sample bin will be between 0 and 75µS (bit 0 - 20) after the trigger as the sampler runs asynchronously to the trigger. The last sample bin will complete sampling between 450µS and 525µS (bit 121 - 142) into the burst.

The measurement processor discards the 0 sample bin. This effectively removes the ramp-up overshoot. Each measurement is also RF Power Qualiﬁed to ensure only valid bursts are measured. Measurements with a result below the qualiﬁcation level are discarded.

The remaining sample bins 1-5 are averaged for the displayed measurement result. Each measurement is therefore based on a 375µS (102 bit) sampling of the burst.

A mobile which does not meet the amplitude mask and has erratic amplitude across the burst could give erroneous results with this measurement algorithm. It is therefore essential that mobiles ﬁrst comply with the amplitude mask in GSM Rec. 11.10.

Making Synchronized External MeasurementsUsing Triggers From The Agilent 8922M/S

There are two ways of making a synchronized external measurement using triggers from the Agilent 8922M/S:

1 Use the G_EXT_TRIG on the rear panel SYSTEM_BUS connector. See

Chapter 6, Connectors for a pin out diagram. This is a separate trigger directly from the Protocol Processor. It is only

selectable from the SERVICE screen. Once set it will provide continuous triggers on each frame. Caution must be used as this trigger can have up to a

0.75 bit error due to the 156/157 bit variance in timeslots. (GSM Recommendations allow use of 156/157 bit timeslots instead of the

156.25 bit length.) To use the G_EXT_TRIG signal:

Go to the CONFIG screen. Select the SERVICE field on the right hand side of the screen. Select the LATCH field and find the selection labeled: ‘g_ext_trig_enable’ (SERV:LATCH:SEL ‘g_ext_trig_enable’) Enter a ‘1’ in the VALUE field. (SERV:LATCH:VAL 1) Select the LATCH field and find the selection labeled: ‘g_ext_trig’ (SERV:LATCH:SEL ‘g_ext_trig’) Enter the TIMESLOT and BITPOSITION on which you want the trigger to occur.

Example: 432 hex is TIMESLOT=4 BITPOSITION=32 hex. The

maximum TIMESLOT=7 and the maximum BITPOSITION=9C hex (Bit 0 - 157).

2-42

Making Measurements

Advanced Features

NOTE The GPIB requires the use of base 10 values, 432h = 1074d, for example:

SERV:LATCH:VAL 1074.

The value entered is relative to the beginning of the zero bit of the zero slot on the downlink baseband. A 4.7 bit modulator delay occurs between the baseband and the RF domain which must also be taken into account. Since the value may only be integer, round to the nearest whole value. The following timing error is introduced due to 156/157 bit timing.

Timeslot=0,4 No Error Timeslot=1,5 +.75 bit error (early trigger) Timeslot=2,6 +.50 bit error Timeslot=3,7 +.25 bit error

2 Use MEAS_TRIG_OUT on the rear panel SYSTEM_BUS connector.

This is the delayed trigger from the Measurement System. In the normal ACTIVATED operation, the Protocol Processor sends triggers to the Measurement System on the zero bit of each downlink TCH burst. The Measurement System applies the ‘Meas Trig’ ‘Trigger Delay’ to this input and then, after the elapsed time, begins making its measurement. After this elapsed time, the Measurement System also sends a trigger transition to the MEAS_TRIG_OUT signal on the rear panel SYSTEM_BUS connector.

The trigger is only generated when a measurement is being made. This signal may be used to trigger an externally connected measurement device such as the HP/Agilent 71150/250 GSM high performance spectrum analyzers.

2-43

Making Measurements

Advanced Features

Unexpected Operations

These are descriptions of operations which may be unclear to the user as to how they occurred. These are NOT defects.

1 The Agilent 8922M/S occasionally sends ABORTS to the attached protocol mon-

itor. These ABORTS are normal and logging data is not lost.

2 In the FA and SD/4+FA control channel configurations, the Agilent 8922M/S

sends speech frames rather than fill frames on the FACCH when there is nothing else to send.

3 The DRX ON mode corresponds to the NORMAL paging mode. The

Agilent 8922M/S sends continuous paging mode NORMAL on the idle PCH blocks. The DRX OFF mode corresponds to the REORGANIZE paging mode. The Agilent 8922M/S sends continuous paging mode REORGANIZE on the idle PCH blocks. When in the REORGANIZE paging mode, the Agilent 8922M/S is guaranteed to page on a random PCH block which is not the block expected in the NORMAL paging mode. The active PCH block will page the MS with the paging mode set to SAME. The SAME mode means “the same paging mode as last indicated.”

4 TMSI reallocation in the Agilent 8922M/S uses the two (2) octet TMSI size. 5 The Agilent 8922M/S does not turn off the transmitter during DTX when the

voice activity detector (VAD) determines that there is no speech input present. Instead, the Agilent 8922M/S sends a silence descriptor (SID) on every speech frame.

6 USE MEM is not intended to be used with Pulse (Pulse ON/OFF Ratio)

measurements - do not select USE MEM after making a pulse measurement.

7 During a Pulse (Pulse ON/OFF Ratio) measurement the following message can

occur if the device under test is generating a larger signal than is expected: ‘RF Overpower occurred during Pulse On/Off Ratio measurement’. This message cannot be queried via GPIB. Use the Hardware 1 Status Register Bit 5 to detect this condition when doing pulse measurements.

NOTE Option 006 (spectrum analyzer) must be installed to make pulse measurements.

8 The Output RF Spectrum measurement and Pulse On/Off Rise and Fall

measurement results shown on the Main view screens are not accessible via GPIB or IBASIC. These measurement results are available on the Trace view screens. All GPIB and IBASIC actions with these fields refer to those fields shown on the Trace view screens.

2-44

Making Measurements

Advanced Features

9 The RF Generator may become uncalibrated in a hopping situation when the last

CW frequency setting was outside the GSM or DCS band. If you are using the RF Generator outside the normal GSM or DCS bands, make sure you set a valid GSM or DCS frequency in the CW frequency before entering a hopping mode. This includes the ACTIVE CELL (ACTIVATED state on the CELL CONFIG 2 screen) on the Agilent 8922M/S.

10 When using RF Rise triggering it is recommended to set MS_Parms:Timing

Advance to MANUAL with the Timing Advance set to zero. If AUTO timing advance is used with RF Rise triggering, the Agilent 8922M/S, operating as a base station, will progressively command the mobile to advance timing until it is at the maximum value of 64. It is difficult to recover from this state without ending the call with the mobile. Changing back to EXT_DEMOD triggering will cause the call to drop. This is because the Agilent 8922M/S is listening for the mobile 64 bits later than the RF Rise triggering left it.

11 When making measurements over the GPIB, it is often necessary to place time-

out constraints in software to account for mobile failure. When a time-out is encountered while a measurement is armed but not complete, it is necessary to perform a “CLEAR” operation on the GPIB. A “RESET” operation is insufficient.

Example

ASSIGN @gpib TO 714 OUTPUT @gpib;”TRIGger:ASTate ’ARM’” ON TIMEOUT 7,5 GOTO Flag1 OUTPUT @gpib;”MEASure:DSP:PHASe:FREQuency?” ENTER @gpib;The_answer PRINT ‘FREQUENCY:’; The_answer OFF TIMEOUT 7 GOTO Flag2 Flag1:OFF TIMEOUT 7

CLEAR @gpib PRINT “Timeout Occurred” OUTPUT @gpib;”TRIGger:ASTate ‘DISARM’”

Flag2:END

2-45

Making Measurements

Advanced Features

12 Some measurement results may be displayed as ---- due, for example, to

mobile failure. The measurement has been armed but has not completed. In these circumstances a GPIB query of the measurement will not return a result. This event should be catered for by adding a time-out to the query and a “CLEAR” operation as described in paragraph 11, above.

13 When changing between screens, the DSP results may briefly show a very large

number. This is expected behavior. When controlling the instrument via GPIB, some phase and frequency results

may consistently return a very large number. This is most likely caused by attempting to read result from another DSP screen when measurement triggering is set to Continuous. The alternative solutions are either to change to the appropriate DSP screen before reading the result, or to use single-shot measurement triggering.

2-46

Making Measurements

Advanced Features

2-47

Verifying Performance

3-1

Verifying Performance

About This Chapter

The tests in this chapter verify the electrical performance of the Agilent 8922M/S GSM Test Set using the Agilent 8922 Performance TestSoftware provided with the product. If the instrument passes this veriﬁcation, its operation and speciﬁcations are assured within the measurement uncertainties provided in the performance test print out. Because of the specialized nature of the Agilent 8922M/S and the equipment required to support it, it is recommended that calibration and repair be performed only by specially equipped Agilent Technologies service centers.

A list of speciﬁcations is found at the end of this chapter.

3-2

Setting up the Tests

This chapter contains the following information:

Verifying Performance

Setting up the Tests

Getting the Right Test Equipment

Installing and Operating the Software

Required Test Equipment lists the test equipment needed for the performance

tests. This is the only equipment supported by the Agilent 8922 Performance Test Software and is required to verify instrument operation. Equipment substitutions or manual performance tests are not recommended or supported by Agilent Technologies.

Performance Test Software describes how to install and operate the Agilent 8922 Performance Tests software.

3-3

Verifying Performance

Getting the Right Equipment

The following equipment is required to do all of the performance tests. The test descriptions have an equipment list that speciﬁes the equipment used for each particular test.

Equipment HP/Agilent Model Number

Measuring Receiver 8902A Sensor Module 11722A Audio Analyzer 8903B Voltmeter 3456A Signal Generator 8657A/B Opt. 022 Multifunction Synthesizer 8904A Opt. 001/002 Pulse Generator 8116A Spectrum Analyzer 8566B Technical Computer with Rocky Mountain

BASIC and DS Disk Drive GPIB/RS-232 printer HP 2225A

HP9000 Series 200/300

3-4

Verifying Performance

Installing and Operating the Software

PerformanceTest Software is supplied on a 3.5-inch, double-sided ﬂoppy disk and

is written to run with BASIC 5.0 and later. Modiﬁcations to the program should be limited to changing the default addresses and storing copies for back-up purposes.

Understanding the Tests

To Load the Program.

Using the Compatibility Switch

Test Descriptions contains a description of each test that is performed by the

Performance Test software. This description is intended to help locate problems if the software fails to execute properly or to help users understand the test methodology that is used in each performance test. The descriptions are not step by step procedures for manual performance tests.

To verify the performance of the Agilent 8922M, you need to convert the instrument back from an Agilent 8922G, or convertthe Agilent 8922S to an Agilent 8922E. To do this refer to the following section titled “Using the Compatibility Switch - Back Conversion”.

You are now ready to run the Performance Test Software.

1 Put the disk in the disk drive. 2 Type LOAD “PT_8922”, press .

After you have completed the Performance Tests, return the instrument back to the Agilent 8922M or Agilent 8922S by following the instructions in the following section titled “Using the Compatibility Switch - Forward Conversion”.

Back Conversion

To turn the instrument from the Agilent 8922M/S back to an Agilent 8922G or an Agilent 8922E, select the following keys:

• CONFIG (this is accessible from the Cell Control screen in the bottom right-hand corner).

• Compatible, select 8922G or 8922E

• HP-IB Adrs (22)

•

PRESET

ENTER

The instrument is now set up as an Agilent 8922G or Agilent 8922E and ready for Performance Veriﬁcation testing.

3-5

Verifying Performance

Installing and Operating the Software

Forward Conversion

To return the instrument from an Agilent 8922G back to an Agilent 8922M or an Agilent 8922E to an Agilent 8922S, select the following keys:

• More (this is accessible from the Cell Control screen in the bottom right-hand corner). Scroll down the list and select CONFIG.

• Compatible, select 8922M or 8922S

• HP-IB Adrs (14)

•

PRESET

The instrument is returned to an Agilent 8922M or Agilent 8922S.

To Configure the GPIB Addresses

1 With the program loaded, type EDIT DEFAULT_ADDRESS, press . 2 Modify each line to indicate the proper instrument address (700-730).

It is now possible to re-store the program as “PT_8922” or store it under a different name.

To Run the Program 1 Type RUN, press .

ENTER

2 Follow the directions as they appear on the screen.

Notes on Running the Program.

The ﬁrst screen which appears is the GPIB status of each piece of test equipment that is supported. It is only necessary to have the instruments responding that will be used in each particular test. Make certain that each instrument you will be using is responding at the proper address. Duplicate addresses may make an instrument appear to be responding but this is not allowed. Press “I” (for Ignore) to continue past this screen.

The second screen prompts you for the instrument model. If you have disk 08922-10006, select HP 8922G (for Agilent 8922M performance testing) or HP 8922E (for Agilent 8922S performance testing). The third screen which will appear is the main Performance Tests selection menu. Three options are available on this screen:

• Select the performance test to run, remember the test instruments and UUT must be responding over GPIB.

ENTER

• Turn the printer function ON or OFF. If the printer function is turned on it must be responding over GPIB or the program will lock up.

• Exit from the program.

Press the key corresponding to the option that you would like to perform. The other screens that appear are connection instructions, error messages and output results.

3-6

Verifying Performance

Understanding the Tests

This section describes the theory of each performance test, lists the equipment needed for the test, and provides some problem solving information.

Test 01: Signal Generator Level

Equipment Required

Measuring Receiver HP/Agilent 8902A Sensor Module HP/Agilent 11722A

Theory of the Test

The UUT is set to generate CW signals at various levels and frequencies. The HP/ Agilent 8902A/11722A is used as a power meter to measure high level signals and the HP/Agilent 8902A tuned RF level function is used to measure low level signals.

Things To Check In Case Of Problems

• The HP/Agilent 8902A/11722A must be calibrated and zeroed for accurate measurementresults.The HP/Agilent 11722A calibration factors must be entered into the HP/Agilent 8902A.

• Low level signals from the Agilent 8922M/S must be very stable to be measured by the tuned RF level function of the HP/Agilent 8902A. The instrument timebases should be locked together. Also, if the Agilent 8922 source has unusually high residual FM it may cause the low level measurements to fail because the HP/Agilent 8902A cannot lock onto the signal.

• Mismatch uncertainty causes a high level of uncertainty in this measurement.

3-7

Verifying Performance

Understanding the Tests

Test 02: Signal Generator Spectral Purity

Test 03: Signal Pulse Modulation

Equipment Required

HP/Agilent 8566B Spectrum Analyzer

Theory of the Test

The UUT is set to generate a CW signal at various levels and frequencies. The HP/ Agilent 8566B is used to measure the signal level and then the level of the harmonics or spurious signals.

Things To Check In Case Of Problems

• The instruments should have their timebases locked together to assure that the frequency offsets for the spurious measurements are accurate.

Equipment Required (excluding Agilent 8922M/S)

HP/Agilent 8116APulse Generator

Theory of the Test

The HP/Agilent 8116A pulse generator drives the pulse input of the UUT and causes it to generate pulsed RF signals. These signals are detected with the negative diode detector and analyzed with the oscilloscope. The UUT is set to generate two different on/off ratios: 30 dB and 80 to 90 dB. Rise time and fall time for each of these is measured.

When the Agilent 8922S is the UUT, the RF Generator is set to generate a pulsed GMSK signal. This signal is then analyzed with the UUT detector and oscilloscope.

Things To Check In Case Of Problems

• The oscilloscope is used to automatically measure rise and fall times. If the RF signal has high video feedthrough, it may cause the oscilloscope to make a faulty reading by triggering on the video feedthrough instead of the actual pulse.

• A diode detector with a greatly different sensitivity may cause the demodulated waveform to overrange on the oscilloscope or have reduced accuracy because of the resolution of the oscilloscope.

3-8

Verifying Performance

Understanding the Tests

Test 04: Signal Generator 0.3 GMSK Modulation

Equipment Required (excluding Agilent 8922S)

HP/Agilent 8904A Option 001/002 Multifunction Synthesizer

Theory of the Test

The HP/Agilent 8904A is used to generate a 270.833 kHz clock and random data. This drives the UUT RF generator to generate the 0.3 GMSK modulated signals with random data. This signal is then analyzed by the UUT to assure that the frequency and phase errors are correct.

If the UUT is an Agilent 8922S, clock and data signals are generated internally,and the HP/Agilent 8904A is not used.

Things To Check In Case Of Problems

• This test should only be performed if the UUT analyzer is known to be accurate. Run test #9 first if there is any question about the accuracy of the UUT analyzer.

• Even when the accuracy of the UUT analyzer is known, its specification is such that this test still has a high degree of measurement uncertainty.

• A possibility to verify an instrument that fails this test may be to use a second Agilent 8922M/S to analyze the signal or use the HP/Agilent 11836A 0.3 GMSK measurement software. This software (and its associated hardware) has a lower measurement uncertainty but is not currently supported with the Agilent 8922 Performance Tests software.

Test 05: Audio Frequency Generator

Equipment Required

HP/Agilent 3456AVoltmeter HP/Agilent 8903BAudio Analyzer HP/Agilent 8902AMeasuring Receiver

Theory of the Test

The UUT is set to generate audio signals at various levels and frequencies. The voltmeter measures AC and DC levelaccuracy, the audio analyzer measures residual distortion, and the measuring receiver measures frequency accuracy.

Things To Check In Case Of Problems

• The measuring receiver and the UUT should have their timebases locked to make accurate frequency measurements.

3-9

Verifying Performance

Understanding the Tests

Test 06: Audio Frequency Analyzer

Equipment Required

HP/Agilent 8904A Option 001/002Multifunction Synthesizer HP/Agilent 3456AVoltmeter

Theory of the Test

The HP/Agilent 8904A is used to generate accurate test signals which are analyzed by the UUT.The voltmeter is used to reduce measurement uncertainty by accurately characterizing the test signal level to predict the correct response of the UUT. The voltmeter is used in the AC level, DC level, SINAD and distortion measurements. Distortion test signals are generated by summing two sinewaves in the HP/Agilent 8904A, one as the desired signal, the other as a distortion product.

Things To Check In Case Of Problems

• Forfrequency accuracy measurements the HP/Agilent 8904A timebase should be locked to the UUT.

• The voltmeter reading is used as a reference to normalize the reading from the UUT. The output “measured” result is the actual reading from the UUT normalized by the actual reading from the voltmeter. If the voltmeter makes a faulty reading, it will normalize the actual UUT response and cause it to appear faulty also. If the front panel reading from the UUT is significantly different from the printed “measured” response, the normalization may be the cause.

Test07: Oscilloscope Equipment Required

HP/Agilent 8903BAudio Analyzer HP/Agilent 3456AVoltmeter

Theory of the Test

The audio analyzer is used to generate CW reference signals which are characterized by the voltmeter and fed into the UUT. The voltmeter reading is used to normalize the reading from the UUT oscilloscope. The oscilloscope measurements are taken using the UUT marker function which is set to the peak of the input sinewave.

Things To Check In Case Of Problems

3-10

Verifying Performance

Understanding the Tests

faulty also. If the front panel reading from the UUT is significantly different from the printed “measured” response, the normalization may be the cause. If the oscilloscope triggers incorrectly, the peak search may not find the actual peak response on the display.

Test08:RF Analyzer Level

Test09:RF Analyzer GMSK Modulation

Equipment Required

HP/Agilent 8657A/B Signal Generator HP/Agilent 8902A Measuring Receiver HP/Agilent 11722A Sensor Module

Theory of the Test

The signal generator is used to generate CW signals at various frequencies and power levels. These are accurately characterized by the HP/Agilent 8902A/11722A and used as a reference. The CW signals are then used to test the UUT which is compared to the reference reading taken by the HP/Agilent 8902A/11722A.

Things To Check In Case Of Problems

• Mismatch uncertainties cause a high level of measurement uncertainty in this measurement. If the HP/Agilent 11722A or HP/Agilent 8657A/B has a high SWR, the accuracy of the results may be reduced.

Equipment Required

HP/Agilent 8116APulse Generator HP/Agilent 8904A Opt. 001/002Multifunction Synthesizer HP/Agilent 8657A/B Option 022.Signal Generator

Theory of the Test

The HP/Agilent 8904A frequency modulates the GMSK signal generator with a known amount of phase error. This test signal is used to verify the UUT’s ability to measure this known signal. The actual measurements are compared to the predicted to determine the accuracy of the UUT. The HP/Agilent 8904A is also used to create the 270.833 kHz clock signal and the pulse generator is used to create a random data pattern. Polarity of the data signal from the HP/Agilent 8657A/B Option 022 is not important in this measurement.

Things To Check In Case Of Problems

• Make certain the option 022 part of the 8657A/B is locked up to the 270.833 kHz

3-11

Verifying Performance

Understanding the Tests

clocksignal. The option does not have GPIBcontrol so the program cannot verify that the option is operational.

Test A: RF Analyzer Pulse Demodulation

Test B: Spectrum Analyzer (Option 006 only)

Equipment Required

HP/Agilent 8657A/B Signal Generator HP/Agilent 8116A Pulse Generator

Theory of the Test

The Pulse generator drives the signal generator to generate Pulsed RF signals at various frequencies. The UUT demodulates these signals and the internal oscilloscope measures the rise and fall time of the demodulated waveform. This test veriﬁes the demodulator rise and fall time speciﬁcations.

Things To Check In Case Of Problems

• Theoscilloscopemeasurement functions are used to measure the 10% to 90% rise and fall time. If the demodulated waveform has significant video feedthrough or the oscilloscope cannot trigger the measurements properly, an incorrect measurement may result.

Equipment Required

HP/Agilent 8657A/B Signal Generator

Theory of the Test

The signal generator is used to stimulate the UUT spectrum analyzer at various frequencies. At each frequency, the spectrum analyzer is tuned to measure its own image and spurious responses. The level of the signal generator is set to various levels to determine the spectrum analyzer’s log-linearity.

Things To Check In Case Of Problems

• The absolute accuracy of the signal generator causes a significant measurement uncertainty in the log linearity measurements. A more accurate measurement is to reduce the signal level using a precision attenuator. This is an acceptable secondary manual test if the UUT fails the automated test.

3-12

Verifying Performance

Understanding Test Failures

This section is intended to be used in conjunction with the Agilent 8922 Series Assembly Level Repair Guide for assembly level repair and troubleshooting. If a

performance test fails and hardware is suspected, the following table is a guideline to help identify the hardware assemblies most likely to cause each failure. Before replacing an assembly, the memory card diagnostics (supplied with the Assembly Level Repair Guide) should also be run to help verify which assembly is defective.

ASSEMBLIES TESTED (P=Primary S=Secondary)

Performance Test

Sig Gen Level S S P S PSSSS Sig Gen Spectral Purity S S S S SSSSS Sig Gen Pulse Mod S PSPS SSSSS Sig Gen .3 GMSK P SSSS SSSSP AF Generator S S AF Analyzer P P S Oscilloscope S S RF Analyzer Power S P RF Analyzer GMSK Mod P S P S S RF Analyzer Pulse Demod S P S S Spectrum Analyzer S S S P S

A2 A3 A4 A5 A6 A9 A11A12 A13 A14 A15 A16 A17 A18 A19 A23 A24 A25 A26 A27

3-13

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Agilent Technologies 8922M/S Specifications

NOTE: Ifyou have the Agilent 8922M/S Option 010 Multi-Band Test System, refer to the

appropriate Agilent 8922 Multi-Band User’s Guide for more information on specifications relevant to dual band testing.

GSM900 and E-GSM900 Functionality

Bit/Frame Error Rate Measurements: Class 1a, 1b, and Class II bits in both raw and residual form.

Also Burst-by-Burst Bit Error Measurement

MS Power Output Level Control: 0 to 19 with RF analyzer auto adjust Broadcast Channel Capability: BCCH + CCCH or BCCH + CCCH + SDCCH/4 Control Channels (SDCCH, FACCH,

SACCH) Call Control Capabilities BS originated call (FS/EFS), MS originated call (FS/EFS),

Trafﬁc Channels TCH (FS/EFS) HSCSD 2x1 and 2x2, 9.6 kbs and 14.4 kbs Timing Auto, manual, uplink-downlink, offset measurement Hopping Two independent, user deﬁnable MA tables with offsets Speech Encoding/Decoding Full rate speech Speech Echo Mode User selectable delay 0 to 5 sec on Agilent 8922M, ﬁxed

Measurement Coordination Flexible control of burst type, ARFCN, and timeslot. SACCH MEAS Result RXLEV, RXQUAL, and timing advance. SMS Cell Broadcast Two predeﬁned messages with user deﬁnable attributes

BCCH + CCCH, BCCH + CCCH + SDCCH/4, SDCCH/8 (non-hopped), SACCH/FACCH

MS camp on, BS call disconnect, MS call disconnect

delay on Agilent 8922S

(code, update number, language and identiﬁer).

RF Generator

Frequency

Specifications

Range 10 MHz to 1 GHz Resolution 1 Hz Accuracy

Stability Same as reference

Reference accuracy

3-14

± 0.5 Hz

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Supplemental Characteristics:

Frequency Overrange Switching Speed

To 1015 MHz with uncalibrated output and modulation 577 µs over the GSM frequency bands in hop mode (refer to 0.3

GMSK modulation specs

Output

RF In/Out Connector

Level Range Level Resolution

Level Accuracy GSM Bands

50 MHz to 1 GHz

−14 to −127 dBm

0.1 dB

±1.0 dB, levels ≥−127dBm,

maximum over range > typically for levels

−12 dB ±1.0 dB,

≥−127 dBm while hopping.

±1.5 dB, levels ≥−107 dBm ±2.0 dB, levels ≥−127 dBm

10 MHz to 50 MHz

±2.0 dB, levels ≥−107 dBm ±2.5 dB, levels ≥−127 dBm

Reverse Power

SWR

Aux RF Out Connector

Level Range +4 to Level Resolution

Level Accuracy GSM Bands

15 Watts continuous 100 Watts for 10 seconds/minute

1.5:1

−127 dBm

0.1 dB

±1.0 dB, levels ≥−107 dBm ±1.0 dB, typically for levels≥−107 dBm while hopping.

50 MHz to 1 GHz

±1.5 dB, levels ≥−107 dBm ±2.0 dB, levels ≥−127 dBm

10 MHz to 50 MHz

±2.0 dB, levels ≥−107 dBm ±2.5 dB, levels ≥−127 dBm

Reverse Power SWR 2.0:1, level <

1. GSM frequency bands are 880 to 915 MHz and 925 to 960 Mhz.

2. Level accuracy degrades 0.2 dB when using the RF in/out connector for both RF generator and RF analyzer. In 30dB pulse mode, level accuracy speciﬁcations are typical.

200 milliwatts

−4 dBm

3-15

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Spectral Purity

Spurious Signals (for ≤+1 dBm output level at Aux RF Out or ≤−19 dBm output level at RF In/Out.

Harmonics: < Non-harmonics: <

−25 dBc

−50 dBc, >5 kHz offset from carrier

0.3 GMSK Modulation

After one timeslot, 577µs, from an isolated RF Generator Trigger in the GSM Frequency bands.

Phase Error Peak Phase Error Frequency Error

Amplitude Flatness Clock Input (Agilent 8922M only)

Frequency 270.833 kHz Level

Data Input (Agilent 8922M only)

Format Level

Supplemental Characteristics:

After three timeslots, 1.73 ms, from an isolated RF Generator Trigger in the GSM frequency bands

Phase Error Peak Phase Error Frequency Error

≤1° rms ≤4° peak ± [0.02 ppm (18 Hz) + reference accuracy], for normal bursts

Typically

±[0.03 ppm (27 Hz) + reference accuracy], for RACHs.

±0.25 dB peak.

± 2 Hz (relative to reference).

TTL

Non differentially encoded input. TTL

≤0.5° rms ≤2.0° peak ±[0.01ppm (9 Hz) + reference accuracy] for normal bursts.

±[0.02ppm (18 Hz) + reference accuracy] for RACH bursts.

Pulse Modulation

Input Levels (Agilent 8922M only) TTL

Rise/Fall Time (10% to 90%)

Supplemental Characteristics:

On/Off Ratio

≤5 µs

>80 dB

3-16

30 dB Pulse Modulation (Agilent 8922M only)

All timeslots 30 dB higher than desired/active timeslot, to test adjacent timeslot rejection.

Supplemental Characteristics: Input Levels TTL Rise/Fall Time (10 to 90%)

≤5 µs

AM for Level Control (Agilent 8922M Only)

For output levels ≤+1 dBm at Aux RF Out or ≤−19 dBm at RF In/Out

Supplemental Characteristics: Input

Range Impedance Sensitivity Calibration

Rise/Fall Time (10 to 90%)

−1.0V to +0.6V

600Ω nominal, DC Coupled 100% AM per volt, nominal 0 VDC input produces calibrated output from the RF Generator

≤10 µs

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

3-17

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

RF Analyzer

Frequency

Specifications

Range 10 MHz to 1 GHz Resolution 1 Hz Hop Mode

Resolution Offset Frequency

Offset Resolution RF In/Out SWR <1.5:1 Supplemental Characteristics:

Frequency Overrange

Offset Resolution

100 kHz

≤50 kHz

1 Hz

To 1015 MHz 500 Hz for FM demodulation out

CW RF Frequency Measurement

Range 10 MHz to 1 GHz Level Range

RF In/Out

Aux RF In Input Frequency Setting Error Accuracy Supplemental Characteristics:

Minimum Resolution

−6 to +41 dBm

−36 to +20 dBm ±500 kHz ±(1 Hz + reference accuracy)

1 Hz

CW RF Power Measurements (RF In/Out Only)

Range -5 to +41 dBm Input Frequency Setting Error

Accuracy Supplemental Characteristics:

Accuracy

Minimum Resolution

±500 kHz ±0.5 dB ± noise effects (+4 to +41 dBm) (0.2 mW)

±0.5 dB ± noise effects (-5 to +4 dBm) (0.2 mW)

0.01 dB

3-18

Peak/Transmitter Carrier Power Measurement

RF In/Out only. After one timeslot, 577 µs, from an isolated Receiver Hop Trigger in the GSM bands.

Range -5 to +41 dBm Input Frequency Setting Error

Input Level Setting Error Accuracy Supplemental Characteristics:

Accuracy Minimum Resolution

±10 kHz ±3 dB ±0.6 dB ± noise effects (+4 to +41 dBm) (0.2 mW)

±0.6 dB ± noise effects (-5 to +4 dBm) (0.2 mW)

0.2 dB

Power Measurement Accuracy

Accuracy (dB)

0.5

0.4

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

0.3

0.2

0.1

Pulse ON/OFF Ratio Measurement (Requires Option 006)

ON power is averaged over the useful part of the burst. OFF is averaged over a one bit interval centered at a user speciﬁed time. Non-hopped mode only.

Input Frequency Setting Error Input Level Setting Error Timing Accuracy

-5 0 5 10 15 20 25 30 35

Power (dBm)

±10 kHz ±3 dB ±1.7 µs (± 1.1 µs typical)

3-19

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Accuracy (ON/OFF 40 dB, RF In/Out only)

OFF Power (dBm) ON/OFF Ratio Accuracy

−30 to −1 ±2.4 dB ±1.1 typically

−37 to −30 ±2.9 dB ±1.3 typically

−42 to −37 ±3.7 dB ±1.7 typically

−47 to −42 ±4.2 dB ±2.1 typically

Amplitude Envelope Measurement

After one timeslot, 577µs, from an isolated Receiver Hop Trigger in the GSM Frequency bands

Measurement Range

RF In/Out

Aux RF In Input Frequency Setting Error

−6 to +41 dBm

−36 to 20 dBm ±10 kHz

Inaccuracy due to Noise (for overshoots ≤ 1 dB):

0 dB

Relative

Level

±1 dB ±3 dB ±3 dB w/5 averages

±0.15 dB pk <±0.2 dB pk <±0.2 dB pk

Input Level Setting Error

−6 dB <±0.2 dB <±0.3 dB <±0.3 dB

−30 dB

<+3.0 dB <+4.2 dB <+2.2 dB

−3.8 dB −7.5 dB −2.6 dB

3-20

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Phase and Frequency Measurements

After one timeslot, 577µs, from an isolated Receiver Hop Trigger in the GSM Frequency bands.

Range

RF In/Out

Aux RF In Input Frequency Setting Error Input Level Setting Error RMS phase error accuracy Peak phase error accuracy Frequency error accuracy

Supplemental Characteristics

After three timeslots, 1.73 ms, from an isolated Receiver Hop Triggering the GSM frequency band.

RMS phase error accuracy Peak phase error accuracy Frequency error accuracy

−6 to +41 dBm

−36 to +20 dBm ±10 kHz ±3 dB ≤1° rms ≤4° peak ±[0.02 ppm (18 Hz) + reference accuracy], for normal bursts.

Typically

±[0.03ppm (27 Hz) + reference accuracy] for RACH bursts.

≤0.5° rms ≤2° peak ±[0.01 ppm (9 Hz) + reference accuracy], for normal bursts.

±[0.02 ppm (18 Hz) + reference accuracy] for RACH bursts.

0.3 GMSK Data Recovery (Agilent 8922M only)

After one timeslot, 577µs, from an isolated Receiver Hop Trigger in the GSM Frequency bands

Range

RF In/Out

Aux RF In Input Frequency Setting Error Required Input Phase Accuracy

Demodulation Duty Cycle 1 timeslot per frame Outputs Data, Clock and Data Valid Data Output Clock Clocked at 1 MHz rate Delay, data

Output Level TTL

−6 to +41 dBm

−36 to +20 dBm ±100 Hz ≤5°

, ≤20° peak

rms

≤1 frame (4.62 ms).

3-21

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

FM Demodulation Output (Agilent 8922M only)

Range

RF In/Out

Aux RF In Sensitivity Input Frequency Setting Error Input Level Setting Error Supplemental Characteristics

3 dB Bandwidth

Output Impedance

DC Offset

Pulse Demodulation Output (Agilent 8922M only)

Range

RF In/Out

Aux RF In Input Frequency Setting Error Input Level Setting Error Rise Time (10 to 90%) Fall Time (90 to 10%) Supplemental Characteristics:

Output Impedance

Output Level

−6 to +41 dBm

−36 to +20 dBm

20µV/Hz

±5% (into an open circuit) ±50 kHz, with ≤100 kHz pk deviation ±3 dB

DC to 270 kHz 600 Ω

≤5 mV

−6 to +41 dBm

−36 to +20 dBm ±50 kHz ±3 dB ≤2.5 µs ≤2.5 µs

600 Ω, DC Coupled 2 Vpk into an open circuit

3-22

Output RF Spectrum Measurement (Requires Option 006)

After one timeslot, 577µs, from an isolated Receiver Hop Trigger in the GSM Frequency bands.

Range

RF In/Out Aux RF In

Input Levels for Optimum Dynamic Range

RF In/Out

Aux RF In Input Frequency Setting Error Input Level Setting Error Supplemental Characteristics:

Log Linearity

Amplitude Flatness

Amplitude Resolution

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

−6 to +41 dBm

−36 to +20 dBm

+7, +17, +27, +37 dBm

−23, −13, −3, +7 dBm ±10 kHz, ±3 dB

±0.4 dB ±1.0 dB

0.4 dB

Dynamic Range (dB)

Offset (kHz)

100 200 300 400 600 800 to 1800

Range (dB) 24 42 53 60 63 64

NOTE: When using Output RF Spectrum due to the Ramping measurement, the dynamic

range is decreased by 12 dB (due to Peak Hold).

3-23

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Spectrum Analyzer Specifications (Option 006)

Frequency Range 10 MHz to 1 GHz Frequency Span/Resolution

Bandwidth (coupled)

Span Bandwidth

<50 kHz 300 Hz <200 kHz 1 kHz <1.5 MHz 3 kHz

≤4 MHz

Display Log, 10 dB/div Display Range 80 dB Log Linearity

Reference Level

RF In/Out +44 to Aux RF In +23 to

Non-harmonic Spurious

Responses Residual Responses Image Rejection >50 dB Supplemental Characteristics:

Level Accuracy

Frequency Overrange

Displayed Average Noise Level <

±1.1 dB

−50 dBc max, for inputs ≤30 dBm

±2.5 dB

To 1015 MHz

30 kHz

−24 dBm

−55 dBm

−70 dBm (no input signal, 0 dB attenuation)

−116 dBm (0 dB attenuation, <50 kHz spans).

3-24

Verifying Performance

Agilent Technologies 8922M/S Speciﬁcations

Audio Source

Frequency

Specifications

Range DC to 25 kHz Accuracy 0.025% of setting Supplemental Characteristics

Minimum Resolution

Output Level

Range 0.1 mV to 4 V Maximum Output Current 20 mA peak

Output Impedance <1 Ω Accuracy

Residual Distortion (THD + noise, amplitude >200 mV

Supplemental Characteristics

Minimum Resolution Level

DC Coupled Offset

rms

)

0.1 Hz

rms

±(2% of setting + resolution)

0.1%, 20 Hz to 25 kHz in 80 kHz BW.

≤0.01V: 50µV

Level

≤0.1V: 0.5 mV

Level

≤1V: 5 mV

Level >1V: 50 mV <50 mV

Audio Analyzer

Frequency Measurement

Specifications

Range 20 Hz to 400 kHz Accuracy

External Input 20 mV Supplemental Characteristics

Minimum Resolution

±(0.02% + 1 count + reference accuracy)

to 30 V

rms

f < 10kHz: 0.01 Hz f < 100kHz: 0.1 Hz

≥ 100kHz: 1 Hz

rms

3-25

Agilent 8922M Users Guide

Specifications and Main Features

Frequently Asked Questions

User Manual