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Productbrochure

Universal Radio Communication Tester CMU 200

THE multiprotocol tester for current and future mobile radio networks

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Extremely high-speed testing

Highly accurate measurements

Modular uture-proo design

Comprehensive spectrum analyzer

Fast switching between networks

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For more than 70 years, Rohde & Schwarz

has always been at the oreront o mo-bile radio technology. We continue

this tradition o RF test and measure-

ment with the Universal Radio Com-

munication Tester CMU 00. The

CMU 00 is a third-generation-plat-

orm design that oers true scalable

multimode unctionality.

The CMU 00 reects the many

years o expertise Rohde & Schwarz has

gained in the world o mobile radio. Inrecent years, the company has helped to

launch overwhelmingly successul mo-

bile radio systems.

Rohde & Schwarz is a preerred suppli-

er to many o the leading mobile equip-

ment manuacturers and is the market

leader or mobile radio test sets.

The CMU 00 is part o a complete

range o mobile radio test equipment,encompassing everything rom conor-

mance test systems to system simula-

tors, turnkey unctional board test / fnal

test systems and simple sales-counter

Go/NoGo testers.

The base unit with its standard-indepen-

dent module test provides many gener-

al-purpose measurement acilities or

the development o all kinds o stan-

dards within its wide and continuousrequency range. I extended by the ap-

propriate options, the CMU 00 o-

ers the hardware and sotware neces-

sary to handle your 3G, .5G and previ-

ous-generation testing applications, in-

cluding analog.

Maximum production output in a

compact 4-rack-unit-high packagewith minimum power dissipation al-

lows compact production space lay-

out

I an expansion becomes necessary

because your needs grow, the mod-

ularity o the CMU 00 concept

will make this easy. Many expansions

may be installed on site. You pay or

them only when you need them

With the intuitive CMU 00 user

interace, even less experienced us-ers do not require extensive training

A new remote interace syntax re-

ects the inherent modularity o this

real multimode tester

Low cost of ownership

Selecting the CMU 00 is a deci-

sion or the uture and results in a to-tal cost o ownership that is sure to be

among the lowest due to the ollowing

actors:

The completely modular design o

hardware and sotware components

eliminates unnecessary investments

right rom the start merely because

a eature might be needed at some

point in the uture. You only pay or

what you need

The CMU 200 targets a wide range o applications but is primarily optimized or the high

accuracy and speed demanded in increasingly quality-conscious manuacturing processes.

The picture shows the ront panel or desktop use.

Testing the 3rd generation

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Applications

RF development

Module design

Module test in production

Adjustment o mobile phones

Final test in production

Functional test

Feature test

High-end serviceQuality inspection

Basis or test systems

Base station simulation

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Owing to the high resolution o the

extremely bright high-contrast TFT dis-

play, even the fnest details can be dis-played

Direct branching to all associat-

ed menus makes or a uniquely

at menu structure

4 Universal Radio Communication Tester CMU 200

The CMU 200 keystrengths

The Radio Communication TesterCMU 00 brings premium cost e-

ectiveness through a variety o eatures,

with extremely ast measurement speed

and very high accuracy being the two

most important ones. In addition, the

secondary remote addressing o the tes-

ters modular architecture makes or in-

telligent and autonomous processing o

complete measurement tasks and ast

control program design.

Maximum accuracy

In a production environment, the testers

high accuracy allows devices under test

(DUTs) to be trimmed or maximum bat-

tery lietime without compromising

quality. In the lab, the CMU 00

enables the development engineer to

partly replace conventional, dedicated

premium-quality instruments and savedesktop space at the same time. High-

precision measurement correction over

the entire requency and dynamic range

as well as compensation or temperature

eects in realtime are critical actors or

achieving the CMU 00s excellent

accuracy.

The globally standardized Rohde & Schwarz

calibration system can check the

CMU 00s accuracy at a service cen-ter close to you or, in some cases, on your

premises. A worldwide network o these

standardized automatic calibration sys-

tems has been implemented in our service

centers. Highly accurate and repeatable

calibration can be perormed wherever you

are. Your local Rohde & Schwarz represen-

tative oers customized service contracts.

For large-scale users o the CMU 00,

a compact level verifcation system is avail-

able in addition.

ProbeDSP technology . Examples o

parallel operation are measurementso BER and simultaneous phase/re-

quency error, error vector magnitude

(EVM), magnitude error and audio, or

the various spectrum measurements

Innovative remote processing

The novel secondary addressing

mode can address similar unctions

o each o the CMU 00 subsys-

tems (i.e. dierent mobile radio stan-

dards) in an almost identical way.

Using this type o addressing, newremote test sequences can be pro-

grammed by a simple cut-and-paste

operation ollowed by the editing o

specifc commands to adapt the con-

trol program to the new applica-

tion. Secondary addressing is ully

SCPI-compliant, which means that

a subsystem address, or example

WCDMA, can be replaced by a string

denoting a dierent subsystem, i.e.

another mobile radio standard

Top speed

The high processing speed is due to ex-

tensive use o ProbeDSP technology,parallel measurements and innovative

remote command processing.

ProbeDSP technology

The modular architecture relies on

decentralized ProbeDSP processing

coordinated by a powerul central

processor. Like an oscilloscope

probe, DSPs dedicated to a specifc

local data acquisition and evaluation

workload help to keep subsystem

perormance at a maximum even iadditional modules are ftted to the

CMU 00 mainrame

Parallel measurements

Several RX and TX measurements

can be perormed in parallel. This

is achieved by the ast response o

the CMU 00s modular hard-

ware as well as the high over-

all processing power o the instru-

ment and the avoidance o bottle-

necks by dedicated operation o the

Usability

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As the CMU 00 oers many o its

measurements in signaling and non-sig-

naling mode, this simple visual indication

o the signaling state is provided as part

o the status line This symbol shows the instrument

status, i.e. remote or manual

operation

For increased speed, measurements

not required can be switched o to

ree resources or the measurements

you want to ocus on

Measurements are confgured by

twice pressing the sotkey marked

with the yellow triangle

Universal Radio Communication Tester CMU 200 5

Exceptional reliability

The CMU 00 employs ultra-eec-

tive heat management between housingand individual components as well as

between heat sinks and air ow. Togeth-

er with the independent cooling cycles

or dierent modules, this adds up to an

optimized cooling system.

The base unit

The base unit without any options in-

stalled can be used or testing generalparameters o 1st, nd or 3rd generation

mobile phones. The CMU 00 base

unit is the ideal solution or tasks at the

module level, i.e. at the early production

stages o all cellular standards.

Integral parts o the CMU 00 base

unit are the RF generator and RF analyz-er, which are complemented by a versa-

tile, network-independent time domain

menu and a comprehensive spectrum

analyzer. The illustration above shows a

power versus time measurement as an

example.

By combining graphical and numeric

overview menus, the user can select the

optimal view when the CMU 00 is

in manual mode.

The menu structure o the CMU 00

is very at and uses context-sensitive se-

lection, entry and confguration pop-up

menus.

Advanced operational ergonomics have

been incorporated into a highly compact

and lightweight, 4-rack-unit-high pack-

age.

Key advantages of theCMU 200

Speed

Unrivaled speed o single measurements

Accuracy

Incomparable accuracy

Excellent result repeatability

Modularity

Modular hardware and sotware concept

provides easy expansion to urther unc-

tionality

Reliability

Extremely low power consumption and

eective heat conduction result in unpar-

alleled reliability

Future-proof

Easy migration to emerging standards

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Rohde & Schwarz supports CMU 00-

based production test solutions through

a comprehensive network o application

engineering sites. The backbone o thisnetwork consists o the our system in-

tegration centers located in Asia, North

America and Europe.

System integration services

Regional center project teams oer lo-

cal system integration, service and sup-

port. A team o experts is ready to pro-

vide turnkey solutions, including testcase programming. Custom-tailored proj-

ect solutions and site process optimiza-

tion are major aspects o our services.

Time to market

The key to commercial success is the

time required to get a new product to

market in large numbers. The crucial

point is the ast transition rom prod-uct development to mass production.

The Cellular Phone Production Test

Platorm TS7180 eaturing the

CMU 00 meets this challenge.

TS7180 description in brie

The TS7180 test platorm can test

two mobile phones simultaneously. It

essentially consists o two Radio Com-munication Testers CMU 00, two

Dual-Channel Analyzers/Power Supplies

NGM0, two Shielded RF Test Fix-

tures TS7110 or holding the DUT,

and an industrial PC. The modular RF

Test Fixture TS7110 can be expand-

ed rom a bed-o-nails PCB test fxture

up to a ully confgured test fxture or f-

nal testing, including an antenna or RF

tests, a loudspeaker and microphone or

acoustic tests, a camera or LC display

The TS 7180 supports common mo-

bile radio standards such as GSM, GPRS,

CDMA000 and WCDMA by means o

ready-to-run test sequences suppliedwith the platorm. The test sequences

can be extended and modifed by means

o a exible sequence editor.

The sotware can thus simultaneously

use the resources o the parallel equip-

ment to maximize speed in highly auto-

mated production. We can oer optimal-

ly confgured test systems customized to

your production environment.

Test executive and generic testsoftware library features

The parallel hardware is ully support-

ed by TestStand, the industry-wide test

executive rom National Instruments. A

user-riendly connection to the available

device drivers has been created to pro-

vide aster use o the test executive. This

connection is established by the generictest sotware library (GTSL). At the same

time, the toolkit concept provides ready-

to-run test cases, which can be custom-

ized by the user as required.

tests, a test pattern or the camera o

the DUT, and pneumatic fngers or key-

pad tests.

The Shielded RF Test Fixture TS 7110

or mobile phones can be adjusted by

means o swap kits to accommodate sev-

eral types o DUTs. It can be used or the

ollowing tests:

RF (antenna)

Audio

LC display

DUT camera and keypad and other

DUT interaces

The Shielded RF Test Fixture TS 7110.

Optimized solutions for your production test requirements

CDMA000 is a registered trademark o the Telecommuni-

cations Industry Association (TIA -USA).Sequence editor

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Shielded test chamber 2 final test

Shielded test chamber 1 final test

Air coupling

Wire coupling

Fixture

control

Level

converter

Audio

amplifier

Bottom

connector

DUT

Industrial PC

COM 1

Keypad

Mouse

Graphics

LAN

Printer, HD

DUT control

GPIB #1

GPIB #2

Radio Communication Tester 1

R&S CMU200

RF In/Out Audio In/Out

Power supply 1

Dual-channelbattery/charger

GPIB #2

GPIB #1

Fixture control

COM 2

USB 1

USB 2

USB

DIO

interface

Audio

RF

Battery/charger/sense


Software concept in brief

Sotware platorm based on

LabWindows/CVI and TestStand

rom National Instruments

GTSL includes ready-to-run test cases

or the standards supported by the

CMU 00Functional test sequences or RF test,

calibration, signaling test, audio and

acoustic test o mobile phones are

supported

Transparent and open library can be

expanded by the user

Operator interace (GTOP) and test

cases can be easily customized

Parallel test o multiple mobile

phones is ully supportedGTSL supports multithreading and in-

strument sharing i needed

Test development time is reduced by

as much as 80 %

TS 7180/7110 features in brief

High throughput by parallel testing o

mobile phones

One system or unctional board test,

phone calibration and fnal test

One system or all major mobile phonestandards

Easy expansion to 3rd generation tech-

nologies

Ready-to-run Rohde & Schwarz GTSL test

library or immediate use or customiza-

tion

Modular and versatile hardware/sotware

platorm

Reduced costs due to generic concept

Swap kit

For detailed inormation, see separate da-

ta sheets:

TS 7110 (PD 0757.773)

TS 7180 (PD 0757.749)

TS7180:

example o a

two-channel

system with one TS 7110

xture.

Block diagram

or a two-channel

conguration o

the TS 7180.

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The GSM-specic non-signaling test

provides generation and analysis o

RF signals (GMSK or 8PSK modu-

lated) or testing RX/TX modules or

mobile phones in service mode.

For an AMR ull-rate or AMR hal-

rate link, a rate set o up to our

combinations o voice and chan-

nel codings (codecs) can be selected

rom the eight ull-rate and the six

hal-rate codecs. During a call, it is

possible to switch between the rates

o the rate set.

The overview menu provides ast

comprehensive inormation on the

mobile phones RF perormance; the

hotkeys at the bottom o the screen

provide immediate access to specic

and detailed GSM measurements.

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dynamically adapting the data rate. In-

terruptions o voice transmission can

thus be avoided by allowing a barely per-

ceptible reduction in audio quality. The

CMU 00 provides all eight combi-

nations o voice and channel coding (co-

decs) or ull-rate and six combinationsor hal-rate transmission. For call set-

up, a set o our rates (codecs) is selected

rom the eight ull-rate and the six hal-

rate codecs. Then additional test parame-

ters (thresholds) are selected or the mo-

bile phone. Dynamic switchover between

the selected rates is eected by AMR in-

band signaling. In the uplink, the mobile

phone inorms the base station about the

quality o the established link and pro-

poses the optimal rate or the selectedrate set to the base station.

GSM data evolution 2.5G

The amount o data trafc in GSM net-

works is growing rapidly. Multislot ap-

plications such as HSCSD, GPRS and

the innovative 8PSK modulation scheme

EDGE are needed to support the increase

in data trafc. The CMU 00 plat-orm is not only able to handle todays

standards and systems but is also de-

signed or the needs o tomorrow.

Multislot

In the uture, mobile phones will be able

to use several timeslots simultaneous-

ly or data transmission and reception

to urther increase the data rate. The si-multaneous transmission and recep-

tion o several timeslots (multislot) is the

main technological challenge or circuit-

switched and packet-switched applica-

tions. The ollowing expansions o the

GSM single-slot measurements enable

maximum exibility in development, and,

with reduced measurement times, maxi-

mum throughput in production.

Power-versus-time measurement

(graphical display) or up to our

timeslots in the uplink (UL). The tem-

plates o this application are evaluat-

ed independently or each timeslot

in line with standards and recommen-dations. Both GMSK- and 8PSK-mod-

ulated signals are recognized, and

the templates o the relevant time-

slot, depending on the modulation

scheme used, are set in realtime

Multislot measurements are required or

HSCSD technologies as well as or GPRS

and EGPRS.

Individual levels or all timeslots used

in the downlink (DL). The CMU

generates up to eight timeslots per

rame in the downlink; each times-

lot can be assigned a separate lev-

el. The excellent level stability o theCMU 00 generator is not im-

paired by multislot transmission us-

ing dierent levels, and allows highly

accurate receiver sensitivity measure-

ments (BER/BLER)

Transmitter and receiver measure-

ments are possible on every timeslot

used. The new multislot concept al-

lows independent measurements on

any timeslot (TS 0 to 7) and thus cov-

ers the current and uture multislotcombinations without restrictions

The CMU 00 combines high

exibility with great operating con-

venience. Based on the multislot ca-

pability inormation rom the mobile

phone, the CMU 00 selects the

maximum possible number o time-

slots or a specifc application and,

when changing between transmit-

ter and receiver tests, automatically

adapts the timeslot allocation

The newly designed spectrum application allows the simultaneous measurement o spectra due toswitching and modulation in realtime. Moreover, the user can select a requency oset (spectral

line) by means o a marker and display it in the time domain. Transient characteristics in spec-

trum-due-to-switching measurements can thus be shown as a unction o time.

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8PSK modulation EDGE

In addition to multislot, a urther step to-

ward increasing the mobile radio data

rate is 8PSK. By using the available GSM

rame structure, the gross data rate is

three times that obtained with GMSK.Error vector magnitude and magnitude

error have been added to the range o

modulation measurements. New tem-

plates or power-versus-time measure-

ments ensure compliance with the spec-

ifcations, as do the modifed tolerance

or spectrum measurements. As with

all measurements provided by the

CMU 00, special attention has

been given to achieving maximum mea-

surement accuracy and speed or EDGE.

GPRS/EGPRS

With newer, uture-oriented methods o

packet data transmission, the radio re-

sources o existing GSM mobile radio

networks can be utilized efciently or

data services. As with circuit-switchedservices, GPRS will also use a combi-

nation o several timeslots (multislots)

and higher-level modulation in the orm

o 8PSK (EGPRS) to increase the data

rate. The introduction o packet-ori-

ented transmission and the associat-

ed temporary assignment o radio re-

sources require new test concepts. The

CMU 00 provides the ollowing

test modes:

3GPP test mode A (GPRS/EGPRS)

In this mode, the mobile phone continu-

ously transmits the associated UL time-

slots. The CMU 00 can carry out

all TX multislot measurements available,

such as the power ramp measurement o

up to our adjacent timeslots simultane-

ously, or modulation and spectrum mea-

surements.

Selecting the coding scheme determines

whether the mobile phone is to transmit

GMSK- or 8PSK-modulated data. With GPRS/

EGPRS, transmission resources are usual-

ly allocated temporarily. The uplink state ag

(USF) transmitted in the downlink inorms

the mobile phone that uplink resources havebeen allocated or the next block and that

these resources have to be used. Correct de-

coding o the highly protected USF sequence

is an essential prerequisite or the dynam-

ic allocation and extended dynamic allo-

cation modes to work properly, and is ver-

ifed by the CMU 00 by means o the

USF BLER test (test modes A and B). Various

routines, e.g. USF BLER and alse USF detec-

tion, are available.

3GPP test mode B (GPRS/EGPRS)

This mode creates a loopback in the

mobile phone so that the mobile phone re-

transmits data blocks received rom the

CMU 00. To achieve maximum mea-

surement speed, the test mode does not em-

ploy the backward error correction unction

used in packet data transmission, which

enables the acknowledgement-based (ac-

knowledged/not acknowledged) retrans-

mission o erroneous data blocks. The trans-mitter and the receiver are active at the

same time. The mobile phone returns the re-

ceived data blocks to the CMU 00 un-

changed, comparable to the loopback mode

in circuit-switched operation. The data is

looped back ater channel coding, which

means that the mobile phones coder and

decoder unctions are tested as well.

In addition to the measurements available

in the 3GPP test mode A, test mode B en-ables very ast receiver test, bit error ratio

and Rohde & Schwarz-proprietary block error

ratio measurements in parallel to transmitter

tests (BER/DBLER)

The power-versus-time multislot application can graphically display up to 4 adjacent timeslots,automatically detect GMSK- and 8PSK-modulated signals and activate the associated templates

in realtime. A new zoom unction allows ull-screen display o up to our slots. Moreover, the user

can zoom in anywhere along the time or power axis.

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3GPP EGPRS symmetrical and

non-symmetrical loopback mode

(EGPRS only)Unlike in test mode B, the data blocks

are looped back beore they undergo

channel coding, i.e. the coders are by-

passed in avor o increased measure-

ment speed. In the symmetrical (E)GPRS

loopback mode, 8PSK-modulated da-

ta blocks are received in the downlink

and returned unchanged in the uplink.

In the non-symmetrical mode, 8PSK data

blocks are received in the downlink and

returned in the uplink as GMSK-mod-ulated data spread over the next three

data blocks. Similar to test mode B, the

(E)GPRS loopback mode allows simul-

taneous transmitter and receiver tests

to be perormed at an even higher data

throughput.

3GPP BLER measurements

acknowledge mode (GPRS/(E)GPRS)

The BLER measurement mode em-

ploys GPRS/(E)GPRS backward error cor-rection. The CMU 00 sends da-

ta blocks in allocated timeslots in the

downlink. The mobile phone checks the

data blocks or errors (CRC check) and,

instead o returning the data blocks, re-

turns only the block acknowledgements

in the uplink. The mobile phone trans-

mitter is thus only temporarily active

or sending uplink acknowledgements,

which means that transmitter measure-

ments are possible only to a limited ex-tent in the BLER mode.

For R&D requirements, the BLER menu

opens up a wide range o options to de-

termine receiver characteristics even be-yond the scope o the 3GPP test scenar-

ios. The CMU 00 urnishes an av-

erage result over all timeslots used, as

well as the BLER and the actual data

throughput or each timeslot. The down-

link transmitter level can be varied sepa-

rately or each timeslot and is displayed

as an important test parameter togeth-

er with the data throughput and the re-

sulting BLER. The (E)GPRS BLER mea-

surement is based on a new retransmis-sion algorithm reerred to as incremen-

tal redundancy.

Incremental redundancy means that

errored blocks are retransmitted using

a dierent puncturing scheme. The

CMU 00 can cycle through the

puncturing schemes as specifed by the

3GPP standard, or start with a speci-

ic puncturing scheme, or use the same

puncturing scheme throughout (incre-mental redundancy OFF).

Fast production test mode fortest modes A, B and (E)GPRSloop (GPRS/(E)GPRS)

Extremely ast adjustment and testing

o RF parameters during mobile phone

production is ensured by deactivat-ing the GPRS/(E)GPRS protocol stack.

Without using all unctions on the high-

er protocol layer (RLC/MAC layer), the

CMU 00 synchronizes the mobile

phone (camping), and the data channel

(PDCH) is then set up directly without

executing the time-consuming routines

o location update and GPRS/(E)GPRS

attach. Any signaling or reconfguring

the test setup is likewise omitted. The

ast production test mode developedby Rohde & Schwarz provides test con-

ditions comparable to those defned or

the 3GPP test modes. The CMU 00

perorms all transmitter and receiver

measurements described by 3GPP, but at

a considerably higher speed.

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For GPRS/EGPRS, BLER measurements can be perormed simultaneously on up to our downlinktimeslots. The actual data throughput, the BLER and the resulting data rate (RLC/MAC layer) are

displayed separately or each timeslot and as an average or all timeslots used. Furthermore an

incremental redundancy perormance test is perormed, and the channel quality is indicated.

In the 8PSK mode, the modulation analysis is subdivided. The error vector magnitude (EMV),

the magnitude error and the phase error can be displayed both numerically as shown above, or

graphically.

GSM highlights of theCMU 200

Benchmark-breaking IEC/IEEE bus speed

due to

Optimized processing power and astmodulation spectrum measurement using

latest DSP generations

Statistical BER test based on confdence

evaluation

High exibility or R&D

Assignment on up to 8 UL and DL slots

(TS 0 to 7)

TX/RX on any transmit slot

Individual level generation on any DL slot

used3GPP packet data test mode supporting

modes A, B and (E)GPRS loop

GPRS/(E)GPRS TBF reconfguration during

established link

GPRS/(E)GPRS intra-band handover

GMSK/8PSK measurements

Phase/requency error, EVM, magnitude

error, origin oset, I/Q imbalance GMSK

or I/Q modulator tuning

Power versus timeOn up to 4 UL slots

Normal/access

Peak power/average, power versus

rame, power versus slot

High-speed ACP measurement (switching

and modulation measurement in parallel)

with additional time domain view

Timing error

BER/DBLER, RBER/FER, FastBER

BLER@4DL (GPRS/EGPRS)

Incremental redundancy support((E)GPRS)

Power versus PCL (on 3 or 7 channels)

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WCDMA in the CMU 200

The need or higher data rates is the

consequence o an inormation-orient-

ed society in the new millennium. The

enhancement o mobile devices takesthis need into account. Third-genera-

tion wireless communication poses new

challenges as a consequence. Driven by

ideas o the frst and second generation

(SIM, global roaming, CDMA technology,

data services), WCDMA takes all un-

damentals to unprecedented levels and

adds new application felds as well as

application-tailored data security. De-

rived rom Asian, American and Euro-

pean ideas, 3G networks are the mobilesolution or uture needs as well as the

current mainstream.

WCDMA FDD functionality

The tests provided by the CMU 00

are currently based on the 3GPP/FDD Re-

lease 99 WCDMA radio l ink standards.

Regular adaptations to new releases and

baselines will be made available as thestandard evolves; thus the CMU 00

today supports Release 5 and is already

prepared or Release . Most o the

measurements oered comply with the

3GPP specifcation TS 34.11, chapter 5

(Transmitter Characteristics), chapter

(Receiver Characteristics), and chapter 7

(Perormance Tests) and chapter 9 (Per-

ormance Requirements or HSDPA)1). The

CMU 00 can be ftted with an FDD

transmitter tester, an additional FDD gen-erator, and FDD signaling hardware. De-

pending on the application, only the frst

or the frst two might be needed, allow-

ing T&M budgets to be optimized. The

three parts allow the CMU 00 to be

confgured or non-signaling TX, TX/RX or

signaling TX/RX measurements and unc-

tional testing on the UE (user equipment)

1) More about the HSDPA capabilities in the ollowing sec-

tion.

in line with the 3GPP specifcation. Due to

the highly user-riendly menu concept, the

CMU 00 provides quick access to all

required measurements and optimizes thehandling and thus the efciency o com-

plex measurement tasks with appropri-

ate status messages and built-in statisti-

cal unctions. Dierent handover capabil-

ities within WCDMA/FDD such as inter-

requency handover are available in the

CMU 00 WCDMA solution. More-

over, handover to other cellular networks

such as GSM, i.e. inter-RAT handovers

blind or in compressed mode are im-

plemented and will also be expanded de-pending on the specifcation progress.

Non-signaling mode

The non-signaling mode is or generating

and analyzing WCDMA (3GPP/FDD)

signals in the ull requency range

o the CMU 00 base unit. The

CMU 00 provides WCDMA-speci-

ic TX measurements on signals with upto six DPDCHs such as:

ACLR (adjacent channel leakage pow-

er ratio): two measurement modes,

flter (bar graph) and FFT (cont. spec-

trum) method; absolute or relative

readout

OBW (occupied bandwidth)

SEM (spectrum emission mask)

CDP (code domain power):

CDP vs all codes, CDP vs DCH chan-nels, RHO vs all codes, RHO vs DCH

channels; all measurements in rela-

tive or absolute readout

Modulation (or 3GPP or general

QPSK): EVM (error vector magnitude),

magnitude error, phase error, re-

quency error, I/Q oset, I/Q imbal-

ance, peak code domain error, RHO

(waveorm quality), I/Q constellation/

vector/eye diagram

Power: MAX, MIN, OFF (UE test

mode)

Power versus slot, innerloop power

Phase discontinuity

The non-signaling mode allows tests o

all essential RF parameters o the con-

nected UE, where autoranging or the

received UE signal is also applied. The

measurements are perormed in un-

synchronized mode. No call is set up

to evaluate UE perormance using this

mode. No 3GPP FDD generator option

is needed. The capability to use dier-

ent 3G dedicated triggers such as signal-ing trigger, IF, TPC, rame or slot trigger,

HSDPCCH etc, together with the exible

trigger settings such as delay and delay

oset make this an interesting tool or

R & D applications where a protocol stack

is not available. Dedicated level service

acilities can also be supported.

Reduced signaling synchro-

nized mode

This mode requires the 3GPP FDD gen-

erator option to be installed. This gen-

erator or the CMU 00 provides

all necessary orward link channels and

3GPP-conorming orthogonal noise sig-

nals. 1 channels o OCNS can be added

and their power levels changed.

The generated channels and available

unctions include

P-CPICH/P-SCH/S-SCH/P-CCPCH/

S-CCPCH/PICH/DPCCH/DPDCH

Flexible adjustments o physical pa-

rameters such as power, code, etc

or physical channels, including the

generation o data (pseudo noise se-

quences)

TPC profles (three predefned, one

user-defned setting, seven user-se-

lectable, fve defnable TPC setups)

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In the connection older o the con-

nection control menu, all relevant

CMU 200 connection set-

tings are displayed together with

the reported UE capabilities. The

main control buttons to initiate and

release dierent connection types

are located here.

This screenshot shows a typical UE

output power response to the TPC

patterns. The Power vs slot mea-

surement can be used with the pat-terns A through H, a combination

o algorithms 1 and 2 and dierent

step sizes. Here pattern F is used.

The inner loop measurement can be

displayed as absolute and relative

graphics or as a numeric power vs

slot table.

In the phase discontinuity measure-

ment, the upper diagram shows the

measured UE power in up to 46 con-

secutive slots corresponding to the

last TPC pattern sent to the UE.

The lower diagram shows the phase

discontinuity in the measured slots.

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OCNS (1 orthogonal channels)

OCNS/Rel. 99 and OCNS/Rel. 5

AWGN

The CMU 00 generator can also

provide non-channel coded data on the

physical layer and allow slot ormats

rom 0 through 1 to be selected. Syn-

chronization o the UE (but still no call

setup) is mandatory or RX evaluation,

synchronized TX measurements and ad-

ditional TX measurements such as inner-

loop power control with TPC commands:

TPC stepping measurement (UEreceives TPC commands rom the

CMU 00 generator)

Receiver quality: BER, BLER and

DBLER (two modes, UE-assisted

evaluation or RF loopback (realtime

receiver option needed))

In conjunction with the Baseband Fad-

ing Simulator ABFS and the

CMU 00 with optional VQ/IF inter-

ace, conditions o ading may be simu-lated and the results evaluated with the

CMU 00. In contrast to RF ading,

a baseband ading scenario allows the

extremely high downlink accuracy pro-

vided by the CMU 00 3GPP FDD

generator to be maintained. In addition,

baseband-aded testing usually comes

at a much lower cost than an RF ading

solution. All ading tests are possible in

synchronized or signaling mode. The op-

tional VQ/IF interace can also be usedor baseband testing when no RF section

o the UE is available in R&D.

FDD signaling mode

Signaling tests are tests in an environ-

ment closer to a true live network. 3GPP

currently specifes six dierent operating

bands or FDD (bands 1 through ). All

six bands are optionally supported by the

CMU 00.

The measurements oered are largely

the same as perormed in synchronized

mode. In signaling mode, theCMU 00 simulates one WCDMA

base-station RF interace including the

signaling protocol so that an FDD UE can

be tested with regard to various signal-

ing parameters. All necessary network

and Node B (base station) parameters

such as control and data channel con-

fgurations can be set. In addition to the

non-signaling tests, CMU 00 pro-

vides eatures such as:

Dynamic setting o signaling param-

eters

RRC connection setup

Readout o UE capabilities

Authentication and security (integrity)

Call setup (MOC, MTC)

Call release (NIR, MIR)

Measurements rom non-signaling

section

Open-loop power control (on/o timemask or RACH preambles)

Modulation quality measurements

during the random access procedure

(PRACH preambles)

Phase discontinuity in line with

3GPP TS 31.11 chapter 5.3.13

Innerloop power control (trafc power

commands, TPC patterns A to H)

The ACLR menu shows all adjacent-channel-related inormation in graphical as well as in scalar

numeric orm. Since the ACLR FFT and OBW measurement methods are closely related, results

or occupied bandwidth are displayed simultaneously. The scalar display excluding the center

channel (0 MHz) may be switched to absolute readout as well.

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Test mode/test loop activation com-

mand (test loop mode 1 transparent

and test loop mode with and with-

out uplink CRC)

BTFD (blind transport ormat detec-

tion) with alse transmit ormat de-

tection ratio (FDR) and transport or-

mat indicator (UL TFCI)

Receiver quality: BER, BLER and

DBLER (RF loopback)Readout o UE measurement reports

on current and neighbor cell (UTRA/

GSM) (with activated compressed

mode (CM))

Several possibilities or handovers:

rom WCDMA to GSM (blind and

compressed mode), and back rom

GSM to WCDMA (blind handover), in-

cluding neighbor cell measurement

The measurements can be perormed

on dierent radio access bearers (RAB)

such as:

SRB at .5 kbit/s, 3.4 kbit/s and

13. kbit/s

AMR at 1. kbit/s, 10. kbit/

s, 7.95 kbit/s, 7.4 kbit/s, .7 kbit/

s, 5.9 kbit/s, 5.15 kbit/s, 4.75 kbit/s

(codec set A to H, M) with selectableaudio loopback

RMC at 1. kbit/s, 4 kbit/s,

144 kbit/s, 384 kbit/s

Asymetric RMC at

UL/144 kbit/s DL/4 kbit/s

UL/384 kbit/s DL/4 kbit/s

UL/384 kbit/s DL/144 kbit/s UL

Video call in loopback mode at

4 kbit/s fxed data rate UL, DL

Packet-switched connection at fxed

data rate o UL/4 kbit/s, DL/384 kbit/s

or 4 kbit/s UL DL

An optional AMR speech codec or

WCDMA that supports the above-listed

data rates is also available. It allows au-

dio measurements to be perormed with

the CMU 00 audio board (option)

or on an external audio analyzer, e.g. the

UPL1.

The high exibility o the signaling

stack allows various parameters in the

CMU 00 MMI to be changed ordierent Node B confgurations to be

simulated via remote control.

Quality assurance

Due to its high measurement repeatabil-

ity and accuracy, the CMU 00 is

the right choice to help ensure a consis-

tently high level o quality. WCDMA-spe-

cifc measurements such as BER/BLERand EVM, plus the ull implementation

o complementary (i.e. ACLR and OBW)

measurements provide an excellent

test platorm or high-quality products.

Unrivaled AF/audio and RF/ading per-

ormance allows test setups at a low

price and compact size with high test

depth.

The UE reports or the current and neighbor FDD cell (can be obtained rom an existing FDD cell

on the air, or example) and rom a neighbor GSM cell can be requested by activating the com-

pressed mode patterns. Four predened compressed mode patterns can be combined. The

CMU 200 also provides ull fexibility with user-dened patterns.

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WCDMA development

The well-structured, user-riendly menu

design and the clear-cut screen layoutprovide quick access to all eatures and

ensures trouble-ree monitoring o the

device under test (DUT). The tester can

be switched between 3GPP and general

QPSK modes to increase the usability

with DUTs under development. For anal-

ysis o the signaling messages between

the UE and the CMU 00, an op-

tional message analyzer is available.

Ater the sotware has been ported to the mobile phone, users oten want to record protocols to optimize internal processes or to perorm an error anal-

ysis that may be necessary. The CMU-Z46 WCDMA message analyzer and recorder option allows all universal terrestrial radio access network

(UTRAN) protocol layers to be recorded, which can then be used or more detailed analysis. When installed on an external PC and communicated to the

CMU 200 via an Ethernet connection, this powerul tool permits in-depth analyses, including transport layer analyses.

Production of mobile phones

The production o mobile phones re-

quires time-efcient and cost-eectivemeasures that simultaneously ensure

both high throughput and high yield.

Owing to market-leading accuracy and

to the unique IEC/IEEE bus concept o

the CMU 00, these two goals can

be easily achieved in production envi-

ronments.

Repair applications (manufac-turing and service centers)

With its outstanding versatility, theCMU 00 is also a suitable tool or

mobile phone troubleshooting. Four con-

fgurable RF ports and a built-in RF con-

nector switch matrix (standard unit)

are provided to enable exible signal

level ranges and switching. Since each

CMU 00 measurement menu al-

lows an independent setting or the in-

put and output ports, a phone fxture

and spectrum analyzer probe can

remain permanently connected to theCMU 00.

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WCDMA highlights of theCMU 200

Benchmark-breaking ICE/IEEE bus speed

(see highlights o base unit)

Combined measurements, many dierent

measurement modeMultiband/multimode testing

Powerul signaling capabilities available:

MOC, MTC, MIR, NIR, inter-requency

handover, inter-RAT handover, cell rese-

lection

Display o UE capabilities

Large selection o radio access bearers

(RABs) with various data rates including

video call in loopback mode

Up to 384 kbit/s reerence measurement

channels (symmetrical and asymmetrical)3GPP-conorming generation o OCNS

(orthogonal channel noise simulation)

and AWGN

Separate and highly accurate level set-

ting or individual DL code channels

Simple voice test using AB/echo by tes-

ter; dedicated audio tests available (op-

tion)

User-defned settings o RF-relevant

signaling parameters

On/o time mask or open loop powermeasurements including the system ino

settings

Power vs slot menu or realtime measure-

ment o RMS UE transmit power in up to

100 consecutive slots

3G dedicated trigger options such as IF

power, signaling, slot, rame, preamble,

PRACH message part, TPC, compressed

mode and change o TFC trigger

External message analyzer or reading

signaling message log fles (option)Simple interactive operation in manual

MMI

Confguration o compressed mode or

neighbor cell reports

Handover and BER/BLER procedures dur-

ing compressed mode

This measurement shows the receiver sensitivity measurement on a UE at 110 dBm P-CPICH in

test-loop mode 2. In addition to the minimum DL power condition, the compressed mode can be

selected to see i the same sensitivity is maintained with compressed mode. The CMU 200

also provides a lost transport blocks counter or easier troubleshooting.

Switching standards

Fast switching between 3GPP FDD and

any o the other numerous standards

supported by the CMU 00 is part

o the standard instrument and can be

achieved by simply pressing a button.

Versatile production test layouts are pos-

sible and true multimode test bays that

utilize the exibility and throughput o

the CMU 00 are no longer a con-

cept o the uture.

Multimode UE applications are possible

using the handover capabilities o the

CMU 00 such as blind and com-

pressed mode handover to GSM as well

as blind handover rom GSM back to

WCDMA.

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Base station DUT

Downlink DPCH

Shared control channel (HS-SCCH) 1




Uplink DPCH

HS-DPCCH

Data

Modulation/

code assignment

FEC

HS-PDSCH (15 channels)ACK /NACK,

channel quality

indicator


User-defned confguration. Any o

the ollowing parameters can be ad-

justed individually: confguration o

the downlink (HS-DSCH) channels in-

cluding TTI distance, number o HARQ

processes (1 to 8), transport blocksize, number o HS-DSCHs, modula-

tion, redundancy versions (0 to 7), etc.

Non-signaling and signalingmode

Since HSDPA is primarily implement-

ed in layer 1, interaction can already be

provided between the UE and the tester

in the non-signaling mode. The down-link signals (HS-DSCH) are confgured

in accordance with the responses in the

uplink signal HS-DPCCH (CQI, ACKs and

NACKs).

All the described unctionalities in the

non-signaling mode are also provided in

the signaling mode.

WCDMA evolution High speed downlink packet access

High speed downlink packetaccess

Fast, high-quality data services are al-ready possible with WCDMA FDD Rel. 99

(requency division duplex). As an ex-

tension o this unctionality, 3GPP Rel. 5

(HSDPA) increases the data rate up to

14.4 Mbit/s by implementing new data

transer techniques. The increased data

rate is made possible or two reasons:

Both communicating entities (Node B

and UE) implement complex data trans-

er principles in layer 1, and, even more

important, up to 15 new transport chan-nels (HS-DSCHs) have been introduced

in the downlink signal.

The CMU 00 takes part in this evolu-

tionary trend by oering the sotware op-

tion or HSDPA in the signaling and non-

signaling modes. All you need to do is in-

stall the option no extra hardware is

needed. The only requirement or the

HSDPA sotware option is existing WCDMA

unctionality in the CMU 00.

HSDPA functionality

The HSDPA sotware option enables the

CMU 00 to generate up to our

HS-SCCHs and up to fve HS-DSCHs

in the downlink signal. Thus, the

CMU 00 can handle HSDPA cate-

gories 1 to plus 11 and 1 or up to the

3. Mbit/s class, which corresponds toa maximum data rate o 4. Mbit/s. Fur-

thermore, the CMU 00 hardware

is already prepared or the next step,

which supports HSDPA categories with

up to 15 HS-DSCHs (7 Mbit/s/10 Mbit/s

class) and HSUPA as well.

Confguring the HSDPA channels

The CMU 00 downlink signal

can be confgured in various ways, de-

pending on the test purpose. This yields

maximum exibility. Each o the our

HS-SCCH can be confgured in pow-

er or channelization code, or they canbe disabled. The HS-DSCH can also be

changed with respect to power code,

channelization code, and data pattern,

and it can be confgured in three ways:

In accordance with the fxed reer-

ence channels (H sets). You can se-

lect any o the fxed reerence chan-

nel confgurations defned by 3GPP

that use QPSK and 1QAM modula-

tion or fve HS-DSCHsIn accordance with the CQI mapping

table. Here, it is possible to use ei-

ther a setting that corresponds to a

fxed CQI value (1 to 30) or automati-

cally change the setting between the

corresponding parameters or a min-

imum and maximum CQI value in ev-

ery TTI. You can also confgure the

CMU 00 downlink signal in ac-

cordance with the received CQI in the

uplink signal (the ollow CQI eature)

Channel structure o the physical channels with HSDPA.

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This screenshot shows the ACK re-

port menu, which counts the ACKs,

NACKs, and DTXs or a specic

HARQ process or or all HARQ pro-

cesses. The throughput is calculated

rom the number o ACKs and the

size o the transport blocks trans-

mitted.

The HS-DPCCH logging applicationo the receiver quality measurement

provides the ACK/NACK messages

and reported CQI values that the UE

returns in a sequence o 60 consecu-

tive HS-DPCCH subrames

(12 WCDMA rames).

This screenshot shows the report-

ing o the CQI and testing or two

cases: whether more than 90 % o

the reported CQIs (except DTX) are

in the interval [median CQI 2, me-

dian CQI + 2] and whether the HS-

PDSCH BLER on the median CQI is

less than or greater than 10 %.

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HSDPA highlights of theCMU 200

Generation o up to our HS-SCCHs and

up to fve HS-DSCHs. The confguration o

downlink HS-DSCHs can be perormed in

three dierent ways:3GPP-compliant fxed reerence chan-

nels (H sets or QPSK or 1QAM)

In accordance with the CQI mapping

table (1 to 30)

User-defned (providing ull exibility)

Force NACK unction to test the peror-

mance o the UE by sending a corrupted

block in the downlink

CQI interaction, in which the

CMU 00 generates the downlink

signal (HS-DSCH) in accordance with thereceived uplink CQI (ollow CQI setting)

Transmitter measurements by means

o the power, modulation, code domain

power and spectrum measurements in

the presence o an HSDPA (dedicated

HS-DPCCH trigger) in accordance with

chapters 5 and o 3GPP TS 34.11

Receiver measurements by counting

ACKs, NACKs, DTXs or a specifc HARQ

process or all HARQ processes and the

data throughputCQI reporting test and HS-DPCCH log-

ging tool

Confguration capabilities or the power

oset parameters ACK, NACK

and CQI to control the power o the

HS-DPCCH

DPCH timing oset between the DPCH

and the HS-DPCCH.

Code domain power vs time measure-

ment

Two RAB types:1. kbit/s RMC + HSDPA (with closed

loop mode 1 RLC TM and loop mode )

3.4 kbit/s SRB RAB + HSDPA

can send a dierent redundancy version

o the data package, repeat the package

with the same redundancy version or con-

tinue with a new package. During this

scenario, several measurements or re-ports are perormed in parallel:

Percentage o transmissions that were

transmitted or retransmitted (ACKs

and NACKs) or not answered at all

(discontinuous transmission, DTX)

Values are specifed or the 1st, nd,

3rd, and 4th redundancy versions

Median o the CQI values reported by

the UE

Throughput measurement

Furthermore, chapter 9 o 3GPP TS 34.11

defnes various tests or checking the re-

porting o CQI under AWGN propagation

conditions or under ading propagation

conditions.

These measurements can be perormed

in the CMU 00 by means o the

CQI reporting test. The measurement is

perormed in two stages:

In the frst stage, the CMU 00

checks whether more than 90 % o the

reported CQIs (except DTX) are in the in-

terval (median CQI , median CQI + )

and whether the HS-PDSCH on the medi-an CQI is greater than or less than 10 %.

I the BLER on the median CQI is < 0.1, the

test is repeated at (median CQI + ); other-

wise, it is repeated at (median CQI 1).

The BLER at (median CQI + ) must be

>0.1, the BLER at (median CQI 1) must

be

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TDMA in the CMU 200

TDMA overview

The broad acceptance o TDMA (IS-13)

is based on its very exible and power-ul technology as well as on its compat-

ibility with AMPS, which is widespread.

Derived rom analog AMPS, the TDMA

standard is ready or step-by-step evo-

lution to the third generation o mobile

radio technology. This act shows the

need or a test instrument that is exible

enough to cover all uture needs as well

as the current standards.

For TDMA (IS-13) signaling unctionality,the CMU 00 requires the universal

signaling unit (CMU-B1) as well as

the sotware option CMU-K7 or

the cellular band or CMU-K8 or

the PCS band.

Due to the highly user-riendly menu

concept, the CMU 00 provides

quick access to all required measure-

ments, optimizing handling and thus e-

fciency.

Signaling mode

The CMU 00 simulates a TDMA

base-station RF interace including

the signaling protocol so that a mobile

phone can be tested with regard to di-

erent signaling parameters. All neces-

sary network and base-station parame-

ters can be set, such as control and tra-fc channel confguration, neighboring

channels setup, etc. A MAHO report can

also be generated.

Quality assurance

Due to its high measurement repeatabil-

ity and accuracy, the CMU 00 isthe right choice to ensure a consistent-

ly high level o quality in production.

TDMA-specifc measurements such as

BER, error vector magnitude (EVM) and

EVM10, where only the frst 10 symbols

are taken into account, provide an excel-

lent test platorm to ensure the produc-

tion o high-quality devices.

Production of mobile phones

The production o mobile phones re-

quires time-efcient and cost-eective

means that ensure both high throughput

and state-o-the-art accuracy. Owing to

the unique IEC/IEEE bus concept o the

CMU 00, these two goals can be

easily achieved in production lines. The

intelligent handling o the received GPIB

commands optimizes the measurement

speed or all TDMA-specifc measure-ments. In practice, this will mean signi-

fcantly shorter test time and enhanced

test yield.

Acoustic measurements

The implemented ACELP speech coder

is able to encode and decode real audio

signals and allows the CMU 00 to

be used also in real acoustic measure-ment applications. This is equivalent to

the CDMA000 and GSM implemen-

tation o the CMU 00. The TDMA

speech coder provides analog inputs and

outputs and a connector or an external

handset. It requires the hardware option

CMU-B5 and can also be com-

bined with the internal Audio Analyzer/

Generator CMU-B41.

Non-signaling mode

The non-signaling mode is or generat-

ing and analyzing TDMA (IS-13) sig-nals in the requency range rom 10 MHz

to .7 GHz. The CMU 00 provides

TDMA-specifc measurements such as:

Power

Modulation

Spectrum

Power versus time

BER

TDMA (IS-136) development

With its superb versatility, the

CMU 00 is the most suitable tool

or the development o mobile phones.

Four confgurable RF connectors are pro-

vided to enable exible signal generation

and analysis. The power meter can eval-

uate signals in a range rom 80 dBm to

+47 dBm, whereas the generator out-

puts signals rom 130 dBm to +13 dBm.

The clearly structured and user-riendlymenu together with the clear-cut screen

layout provide quick access to all ea-

tures and ensure trouble-ree monitoring

o the device under test.

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The modulation menu allows thephase error, requency error and the

error vector magnitude to be mea-

sured. The measurement results are

displayed graphically. Additional

measurements such as amplitude

droop and timing error are taken as

well and displayed numerically in

the same screen.

The mobile phone reports the re-

ceived signal strength (RSSI) o

the observed channels back to the

CMU 200 where the RSSI is

displayed in the MAHO report list.

It is possible to congure the neigh-

boring channels in the network set-

up. The reported BER can also be

monitored.

In the power menu, the mobile

phone output power o the short

burst or the normal burst is dis-

played. The CMU 200 also en-

ables leakage power measurements

which indicate the mobile phone

power output in timeslots not used.

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Handoffs

Handos are part o the IS-13 specif-

cation. Handos between PCS and cel-lular bands as well as rom and to AMPS

are defned and have to be tested. The

CMU 00 supports IS-13 handos

rom 800 MHz to 1900 MHz (interband

hando) and vice versa. Handos rom

1900 MHz or 800 MHz to AMPS and vice

versa are also possible (intermode hand-

o) with the CMU 00.

Switching standards

The exibility o the CMU 00

makes or quick and simple switching

between two dierent standards. This

is very important or IS-13, which is a

dual-mode standard containing a digi-

tal (TDMA) and an analog mode (AMPS).

The hando between TDMA and AMPS

can be achieved by simply pressing a

button. This results in a very versatile

test concept to improve the exibilityand throughput o production lines.

In the modulation overview menu, error vector magnitude (EVM), phase error and magnitude

error are measured simultaneously and displayed in a numeric table. The user can choose either

EVM, where the entire burst is considered, or EVM10, where only the rst ten symbols are taken

into account.

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TDMA highlights of theCMU 200

Basic eaturesCall to or rom mobile phone

Hando to AMPS

Dual-band hando

Signaling measurements

MAHO report

Power versus time

Short burst

Normal burst

Modulation

Phase errorMagnitude error

EVM/EVM10

Overview o phase/magnitude and

EVM simultaneously

Spectrum

Adjacent channel power due to switch-

ing or modulation

Overview

Signaling inormation

Non-signaling measurementsModulation

Spectrum

Power versus time

BER

Handos rom cellular band (800 MHz) to PCS band (1900 MHz) can be tested as well as to and

rom AMPS. Beore hando to a new network, the parameters or the target network can be set.

This results in a large variety o dierent test scenarios.

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AMPS in the CMU 200

AMPS overview

Analog AMPS (advanced mobile phone

system) is a standard system or ana-log mobile phone service in the Unit-

ed States and is also used in other coun-

tries. It is based on the requency spec-

trum allocation or cellular service estab-

lished by the Federal Communications

Commission (FCC) in 1970. Introduced by

AT&T in 1983, AMPS became the most

widely deployed cellular system in the

United States.

AMPS options

Although AMPS is a frst generation an-

alog standard, a substantial demand or

mobile radio testers covering this stan-

dard will continue to exist in the uture.

Especially in the United States, dual-

mode CDMA000/AMPS and TDMA/

AMPS phones are very common.

By combining the digital standards withanalog AMPS, the network operators

oer their customers the advantages o

the digital standards and ensure nearly

100 % coverage in North America. As a

consequence, Rohde & Schwarz is oer-

ing analog AMPS in addition to the dig-

ital standards TDMA and CDMA000.

These options add analog AMPS unc-

tionality to the CMU 00 base unit:

CMU-B1 (universal signalingunit)

CMU-B41 (audio generator/

analyzer)

CMU-K9 (AMPS test sotware)

The hardware options CMU-B1

and CMU-B41 are suitable or

other standards as well.

Transmitter measurements

Carrier power

Carrier requency errorSAT requency error/peak deviation

ST requency error/peak deviation

Modulation noise and distortion

Hum and noise

Electrical AF response

Modulation distortion

Residual AM

Receiver measurements

Sensitivity

Hum and noise

SINAD

Distortion

AF voltage

Electrical AF response

Residual AM

Audio deviation

AMPS measurements andfeatures

As or other standards, there are twocategories o AMPS measurements:

Transmitter tests

or veriying the transmit part o a

mobile phone

Receiver tests

or veriying the receive part o a mo-

bile phone

AF level search routine

The AF level search routine in the TX test

menu allows the user to set the desired

requency deviation o the mobile phone

transmitter at a keystroke, the level o

the CMU 00 modulation generator

being automatically corrected.

Sensitivity search routine

The sensitivity search routine in the RX

test menu automatically searches or the

receiver input level at which a selectable

SINAD o the demodulated signal can

still be attained.

The ollowing lists provide an overview

o the most important tests implemented

in the CMU-K9 option.

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AMPS highlights of theCMU 200

Benefts o base unitPlatorm supporting CDMA000, TDMA

and AMPS in one box

Wide requency range allowing dual-

mode/dual-band testing required or

CDMA000 and TDMA

See base unit section

AMPS eatures

Powerul signaling capabilities

Base station simulation

Mobile or base station originated callconnect/disconnect

Short measurement time ensuring high

throughput

Combined measurements

Benchmark-breaking IEC/IEEE bus speed

Simple interactive operation, standard-

ized MMI

No specialized network knowledge re-

quired

Various handos rom CDMA000/

TDMA and to TDMA supported

All the flters required or the measure-

ments are o course preconfgured in linewith specifcations, but their settings

can be modifed or individual measure-

ments. The RX and TX electrical AF re-

sponse measurements in AMPS are usu-

ally defned as requency sweep ver-

sus AF range. The CMU 00 oers

a much aster and more modern alter-

native.

Using the TX and RX AF response menus

o the CMU 00, the AF responseis measured simultaneously at 0 test

points with user-programmable level

and requency and then checked against

specifed tolerances (see screenshot

above).

TX AF response measurement: the pre-emphasis characteristic o the mobile phone transmitter is

veried by a single-shot measurement.

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DMA


CDMA2000 1X in the CMU 200

CDMA2000 overview

CDMA000 arose rom the urther de-

velopment o cdmaOne (TIA/EIA-95) andis an enormous step toward 3G. Besides

higher data rates and considerably im-

proved efciency, CDMA000 is partic-

ularly noteworthy or its downward com-

patibility with cdmaOne. Nine dierent

confgurations (radio confgurations RC1

to RC9) in the orward link and six radio

confgurations in the reverse link defne

the dierent connections which are

specifed in the IS-000 standard.

RC1 and RC defne cdmaOne con-

nections or rate set 1 and rate set

RC3 to RC5 in the orward link (or

RC3 to RC4 in the reverse link) defne

CDMA000 connections or spread-

ing rate 1 (CDMA000 1X)

RC to RC9 in the orward link (or

RC5 to RC in the reverse link) are

CDMA000 connections or spread-

ing rate 3 (CDMA000 3X) only

Compared to cdmaOne, CDMA000 1X

doubles the capacity or pure voice

transmission and provides a maximum

packet data rate o 307 kbit/s on a single

1.5 MHz carrier. CDMA000 1X is a

recognized IMT-000 3G standard, al-

ready successully deployed in multiple

networks over several continents.

CMU CDMA2000

1Xoptions

The CDMA000 standard within the

CMU 00 was launched in Decem-

ber 001. By supporting the CDMA000

standard, Rohde & Schwarz is enhancing

the CDMA000 1X unctionality to meet

customer needs today as well as in the

uture.

The central component o the

CDMA000 1X option is the Signaling

Unit CMU-B83, which is a pre-

requisite or enabling CDMA000 1Xunctionality in the CMU 00. The

CMU-B83 is designed or maximum

conormance to the standard. The

CMU-B83, o course, not only sup-

ports pure CDMA000 1X high-speed

data links, but also enables the links o

the previous TIA/EIA-95A/B standards.

CDMA000 1X is used in various re-

quency ranges. The standard current-

ly defnes more than ten dierent bandclasses, all o which can be supported

by the CMU 00 with its universal

hardware concept.1)

The ollowing options are available or

CDMA000 1X:

CMU-B83: CDMA000 signal-

ing unit (essential)

CMU-K83: CDMA000 1X sot-

ware or the 450 MHz band (band

class 5)CMU-K84: CDMA000 1X sot-

ware or cellular bands


ware or PCS bands


ware or IMT000 band (band class )

CMU-B85: 8k QCELP, 8k EVRC,

13k QCELP speech coder

CMU-B87: layer 3 message

monitor sotware

CMU-U80: gpsOne trigger out-put connector

The universal hardware and sotware

concept o the CMU 00 represents

the optimum solution or the develop-

ment and challenges o the CDMA000

standard over the next ew years.

1) The CMU 00 already supports band classes BC0 to

BC10. Additional band classes can be integrated easily i there is a market requirement.

CDMA2000 1X functionality

Similarity in physical conditions and

downward compatibility make theCDMA000 1X T & M concept very sim-

ilar to that o cdmaOne. There are, how-

ever, major dierences in the protocols.

The CMU 00 supports connections

in all radio confgurations defned or

CDMA000 1X, i.e. TIA/EIA-95 connec-

tions as well as the usual CDMA000 1X

high-speed connections.

Code domain power is a new and high-ly important measurement or mobile

phones in CDMA000. Since several

code channels are now transmitted si-

multaneously in the reverse link, it is

necessary to check whether the pow-

er distribution o the dierent channels

complies with the test specifcation (TIA/

EIA-IS-98-E) or CDMA000. The mea-

surement concept in the CMU 00

is based on ProbeDSP technology,

which permits high-speed measuremento the code domain power. The empha-

sis is on ast measurements and clear

and concise representation.

O course, the CMU 00 also

supports the requirements placed

on the gpsOne test application; the

CMU 00 meets the high demands

or requency and phase accuracy.

The CDMA000 1X implementation inthe CMU 00 is based on the TIA/

EIA IS-000 Rev. 0 standard. However,

eatures o Rev. A are partly implement-

ed. The CMU 00 currently sup-

ports, or example, FER measurements

on two supplemental channels (SCH0

and SCH1).

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Within a TDSO (SO 32) connection,

the rame error ratio (FER) on the

undamental channel (FCH) as well

as on the supplemental channels

SCH0 and SCH1 can be evaluated

(as soon as CDMA2000 handsets

support SCH1).

Code domain power is a high-

ly important measurement or mo-

bile phones in CDMA2000. Since

several code channels are transmit-

ted simultaneously in the reverse

link, it is necessary to check wheth-

er the power distribution o the

dierent channels complies with the

test specication (TIA/EIA-IS-98-E).

The spectrum measurement pro-

vides comprehensive ACPR mea-

surements at our dierent user-

denable requencies in a 2 MHz

range.

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DMA


CDMA2000 1X in the CMU 200

The CMU 00 provides a large set

o dierent connection types (service

options), making the tester ideal or R&D

purposes. The ollowing are currentlypossible:

Test loop service options:

SO , SO 9, SO 55

Speech service options:

SO 1, SO 3, SO 17, SO 0x8000

Test data service option: SO 3

IP end-to-end data connection: SO 33

Short message service (SMS):

SO , SO 14

The CMU-B85 speech coderoption is a unique eature within the

CMU 00. The capability to encode

external audio signals and to decode

digital CDMA000 signals to analog au-

dio makes the CMU 00, in com-

bination with an external audio analyz-

er such as the UPL1, suitable or

high-precision acoustic measurements

on CDMA000 mobile phones.

The layer 3 message monitor (optionCMU-B87) is an extremely help-

ul tool or analyzing and veriying the

correct implementation o the proto-

col stack. This Windows-based sotware

displays and stores single messages or

complete test sessions. Analysis can be

perormed oine, online or via the local

area network (LAN).

All relevant base station parameters and

connection settings can be confgured inuser-riendly menus.

As with all mobile radio networks sup-ported by the CMU 00, two dier-

ent measurement modes are available:

On the one hand, there are tests in the

non-signaling mode, which permit anal-

ysis o the mobile phone without regis-

tration in the base station and without

actual call setup. For this purpose, the

CMU 00 generates a base station

signal with all the physical channels re-

quired, which are user-confgurable. Thismeasurement mode complies in particu-

lar with requirements or high measure-

ment speed in production lines.

On the other hand, there are tests with

complete signaling.

Signaling mode

The range o unctions is as ollows:

Power measurements

Minimum/maximum output power

High-speed channel power

Gated output power

Open-loop time response

Access probe power

Standby power

Range tests by using user-confgu-

rable power control bit patterns

Receiver quality measurementsFrame error ratio (FER) on FCH,

SCH0 and SCH1

Dynamic range, sensitivity and

other user-selectable test environ-

ments:

FER injection

Forward power control measure-

ment

Modulation measurements allow users to check the MS transmitter. Parameters such as EVM,

phase error and requency error are displayed graphically.

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Modulation (both RC1/ and RC3/4)

Error vector magnitude (EVM),

magnitude error, phase error,

waveorm quality, carrier

eedthrough, requency error,

eye diagram, constellation/vector

diagram

Code domain power

Code domain power

Peak code domain error power,

channel powerHandos

Implicit handos (RF channel,

Walsh code, PN oset, rame o-

set)

Interband hando

Hando to AMPS

Sideband suppression

Non-signaling mode

High-speed power measurement

Frequency error

Waveorm quality (both RC1/ and

RC3/4)

Carrier eedthrough

Transmit time error

Sideband suppression

The channel power measurement displays the power in the channels used by the reverse link,

separated into I and Q signals.

CDMA2000 highlights of theCMU 200

CDMA000 speech coder or high-

precision acoustic measurements

Multiple connection types to cover most

important test requirements in R & D, pro-duction and high-level service labs

Forward closed-loop power control tests

as specifed in IS-98E sections 3.4.7,

3.4.8, 3.4.9 supported

Quick paging channel implemented

Handos possible between service op-

tions and between CDMA000 and

IS-95 connection types during an estab-

lished call

Measurements under ading condi-

tions supported (baseband ading; re-quires option CMU-B17 in combina-

tion with a ading generator such as the

ABFS)

Voice loopback and comprehensive test-

ing o mobile phones

Full support o RC1/RC (cdmaOne mea-

surements) and RC3/RC4 (CDMA000)

Support o all band classes specifed in

IS-000

Innovative measurement o code domain

power, code domain peak error power,channel power

Parallel RX/TX measurements ensuring

high throughput in production environ-

ments

Graphical representation o measurement

results best suited or R & D labs

Readout and display o many mobile-

phone-specifc parameters (ESN, slot cy-

cle index, etc)

Extremely ast measurements

Non-signaling and signaling modeVarious handos supported (e.g. hando

to AMPS, interband hando)

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1xEV-DO in the CMU 200

1xEV-DO overview

CDMA000 1xEV-DO (TIA/EIA/IS-85),

ofcially recognized by the ITU as anIMT-000 3G standard, is the latest

step in CDMA000 evolution. The new

standard provides a data only mode

(no voice trafc) with data rates up to

.4 Mbit/s in the orward link and up to

153.7 kbit/s in the reverse link.

1xEV-DO uses a dedicated carrier with

the same 1.5 MHz bandwidth per car-

rier as CDMA000 1X and is optimized

or the delivery o high-speed wireless

data to mobile terminals as well as fxedwireless devices. Due to the compatibil-

ity with existing CDMA000/IS-95 net-

works (same cell sites, towers and an-

tennas can be used), more and more

CDMA000/IS-95 operators world-

wide will to upgrade their networks to

1xEV-DO service.

1xEV-DO test concept

Recent production measurement trends

have been moving away rom call es-

tablished based or signaling based

testing toward a module or non-sig-

naling strategy. The main advantage

o this approach is reduced test time in

comparison to ull signaling tests. It is

possible to implement vendor-specifc

tests/procedures and easier to add new

test scenarios as the DUT matures. In

addition, lack o symmetry between or-ward and reverse links makes traditional

loopback testing less eective.

1xEV-DO generator

The extremely exible 1xEV-DO gen-

erator (option CMU-B88) wasdesigned to provide not only a limited

live control channel but also trafc or

up to our dierent access terminals si-

multaneously. This allows receiver mea-

surements or up to our separate access

terminals at the same time.1)

Each o the our dierent trafc chan-

nels can be confgured independently.

The user-specifc parameter set includes

MACIndex

MACLevel

Data rate

Data pattern

Transmission interval

Power level

DRCLock mode

Reverse power control mode

The reverse power control system that

is implemented allows extensive rangetests to be perormed (independently or

each user) by sending a series o specifc

power-control bit patterns to the access

terminal or by using an external power

control bit source.

The access network also supports a com-

plete set o parameter settings: PN o-

set, reverse activity bit state, AWGN,

power and channel, which can be con-

fgured easily. To simulate dierentconditions in a real network, up to 55

other users (comparable to OCNS in

CDMA000) are supported by the

1xEV-DO generator.

1) Multiple-user support depends on the data multiplexing

mode used.

With the 1xEV-DO option, the

CMU 00 now oers a very exibleall-in-one solution including a 1xEV-DO

generator or receiver measurements

o 1xEV-DO access terminals as well as

an extensive list o transmitter measure-

ments. The test concept is based on the

actory test mode (FTM) which provides

direct control o the DUT without com-

plete signaling. The FTM is implement-

ed via the serial diagnostic monitor in-

terace which is already present in most

1xEV-DO terminal designs. The actorytest mode minimizes test confguration

and transition time between tests and

allows simultaneous testing o dier-

ent DUTs. Enhanced measurement times

and optimized test sequences are a spe-

cial beneft especially in production envi-

ronments, yielding higher throughput.

1xEV-DO options

The 1xEV-DO option o the CMU 00

is based on the CDMA000 1X Signal-

ing Unit CMU-B83. To upgrade the

CMU 00 with 1xEV-DO unctionality,

the ollowing options are required:

CMU-B83

CDMA000 1X signaling unit

CMU-B88

CDMA000 1xEV-DO generator

or CDMA000 Signaling Unit

CMU-B83CMU-K88

CDMA000 1xEV-DO test sotware

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RF

Forward link and reverse link (for transmitter measurements)

R&SCMU200 with 1xEV-DO generator

DUT

Reverse link

(PER statistics)

Interface for

DUT control

IEC/ IEEE bus

RRI Pilot

Data

RRI

ACK

Pilot

Data

RRI Pilot RRI

ACK

PilotRRI Pilot

Data

RRI Pilot

Data

RRI

ACK

Pilot RRI Pilot

ACK = OFF

DRC = OFF

DATA = OFF

ACK = OFF

DRC = ON

DATA = ON

ACK = OFF

DRC = OFF

DATA = ON

ACK = ON

DRC = ON

DATA = ON

ACK = ON

DRC = ON

DATA = OFF

ACK

ACK = ON

DRC = OFF

DATA = ON

ACK = ON

DRC = OFF

DATA = OFF

ACK = OFF

DRC = ON

DATA = OFF

DRC DRCDRC DRC

One Slot

Notes:

Measurement window

DRCLength = 2

DRCGating = ON


Test setup: A test system using a

actory test mode (FTM) is virtually

identical to most protocol-based

production test setups. It consists

o a test controller, a radiocom-

munications tester with 1xEV-DO

option and the actual device under

test. The primary dierence is that

the device under test operates in

the FTM mode while the test se-

quence is being perormed.

Channel lters: Three dierent

channel lters allow the reverse

link signal to be analyzed in eight

dierent signaling states. Users

may select whether or not to

measure the signal at the time

when ACK, DATA or DRC channel

is transmitted (ON or OFF).

All modulation measurements as

well as the code domain power

measurement support the channel

lters.

The spectrum measurement

provides comprehensive ACPR

measurements at our dierent

user-denable requencies in a

2 MHz range.

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1xEV-DO in the CMU 200

1xEV-DO measurements

The CMU 00 provides a complete

set o extremely ast transmitter mea-surements. Most o the measurements

are presented in graphical orm which

makes the test solution ideal or R&D.

The modulation analyzer allows the re-

verse link signal to be evaluated in eight

dierent states (DATA on/o, DRC on/

o, ACK on/o)

Since receiver testing can be perormed

in parallel by the access terminals, the

CMU 00 is the perect solution orthe production o 1xEV-DO access ter-

minals.

The list below shows the implemented

1xEV-DO measurements:

Power measurements

General power measurement (e.g. or

ast power phasing)

Code domain powerCode domain power

Code domain error power

Channel power

Modulation measurements

Error vector magnitude (EVM)

Magnitude error

Phase error

I/Q analyzer

Spectrum measurements30 kHz spectrum analyzer flter at our

requency osets (user-confgurable);

max. requency oset MHz

Receiver measurements

Via DUT control interace in test con-

troller RF signal data or up to our

ATs may be generated in parallel by

the CMU 00

Code domain power measurement:

The code domain power (CDP) includes the time-switching component between RRI and pilot

channel. The blue bar displays the CDP or the time the RRI channel is up. The purple bar

shows the CDP value or the time the pilot channel is up.

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1xEV-DO highlights of theCMU 200

Simultaneous testing o up to our access

terminals

Reduced test times in comparison to ull

signaling testsExtremely exible 1xEV-DO generator al-

lows vendor-specifc tests and new test

scenarios

Channel flters allow the reverse link sig-

nal to be evaluated in eight dierent

states

Combines 1xEV-DO with CDMA000 test

applications in one box or dual-mode

CDMA000/1xEV-DO testing

All band classes used are supported

Code domain power includes timeswitching between RRI and pilot channel

Dierent network conditions can be sim-

ulated by a user-defnable number o ad-

ditional users in the orward link

The I/Q analyzer provides a constellation diagram as well as an eye pattern or the I and Q

component.

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Bluetooth measurements in the CMU 200

General

The CMU 00 was the frst

Bluetooth test set on the market. It isthe only radiocommunications tester

worldwide to oer Bluetooth as well as

all important mobile radio standards in a

single instrument.

Applications

The CMU 00 with the Bluetooth

option is the ideal instrument or the pro-

duction, development and maintenanceo any kind o device with an integrated

Bluetooth interace.

Due to its modular platorm concept, the

CMU 00 is the ideal solution or

all cellular-standard mobile-phone pro-

duction lines.

Parallel operation for high mea-

surement speed

Due to the high measurement speed

and large memory capacity o the

CMU 00, transmitter and receiver

measurements can be carried out simul-

taneously. When measurements are per-

ormed in requency hopping mode, a sig-

nifcant test depth is rapidly attained. Only

a ew seconds are required between call

setup, transmitter and receiver measure-

ments and call detach. Fast test cycles en-sure a ast return on investment.

Many convenient measurementfunctions

The CMU 00 oers a large num-

ber o statistical monitoring and mea-

surement unctions. It is possible, or in-

stance, to defne individual tolerances

or each measured value and to stop a

measurement sequence ater a certain

number o measurements or when a tol-

erance has been exceeded. Besides the

common traces or power and modula-tion versus time, averaged minimum or

maximum traces can also be displayed

over a user-defned number o packets.

Signaling

Setting up a Bluetooth connection

The CMU 00 acts as the master o

a Bluetooth piconet, the DUT as a slave.

The CMU 00 is able to perorm theinquiry procedure or the identifcation

o all Bluetooth devices within range

o th

[R&S_CMU200_Spec]

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