Page 1
Universal Radio Communication Tester ¸CMU 300
Product brochure
Version
03.00
April
2006
The base station tester combining RF parametric testing and signaling
Extremely high-speed testing
◆
Highly accurate measurements
◆
Modular future-proof design
◆
Comprehensive spectrum analyzer
◆
and signal generator
GSM: AMR testing
◆
WCDMA: signaling mode
◆
HSDPA: RF parametric testing and
◆
signaling mode
Page 2
2 Univer sal Radio Communication Tester ¸CMU 300
The ¸CMU 300 – a new generation in base station
testing
For more than 70 years, Rohde & Schwarz
has always been at the forefront of
mobile radio technology. We continue
this tradition of RF test and measurement with the Universal Radio Communication Tester ¸CMU 300. The
¸CMU 300 is a third-generation-platform design that offers true scalable
multimode functionality.
The ¸CMU 300 reflects the many
years of expertise Rohde & Schwarz has
gained in the world of mobile radio. In
recent years, the company has helped to
launch overwhelmingly successful mobile radio systems.
Rohde & Schwarz is a preferred supplier
to many of the leading mobile equipment manufacturers and is the market
leader for mobile radio test sets.
The ¸CMU 300 is part of a complete
range of mobile radio test equipment,
encompassing everything from conformance test systems to system simulators, turnkey functional board test/final
test systems and simple sales-counter
Go/NoGo testers.
Low cost of ownership
Selecting the ¸CMU 300 is a decision for the future and results in a total cost of ownership that is sure to be
among the lowest due to the following
factors:
The completely modular design of
◆
hardware and software components
eliminates unnecessary investments
right from the start merely because
a feature might be needed at some
point in the future. You only pay for
what you need
If an expansion becomes necessary
◆
because your needs grow, the modularity of the ¸CMU 300 concept
will make this easy. Many expansions to the tester may be installed
on site. You pay for them only when
you need them
Maximum production output in a
◆
compact 4-rack-unit-high package
with minimum power dissipation allows compact production space layout.
With the intuitive ¸CMU 300
◆
user interface, even less experienced
users do not require extensive training
A new remote interface syntax re-
◆
flects the inherent modularity of this
real multimode tester
The base unit with its standard-independent module test provides many generalpurpose measurement facilities for the
development of all kinds of standards
within its wide and continuous frequency range. If extended by the appropriate
options, the ¸CMU 300 offers the
hardware and software necessary to
handle your 3G, 2.5G and previous-generation testing applications, including
analog.
The ¸CMU 300 can handle a wide range of applications but is primarily optimized for
the high accuracy and speed demanded in increasingly quality-conscious manufacturing
processes. The picture shows the front panel for desktop use.
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Key strengths
Key advantages of the
¸CMU 300
The Radio Communication Tester
¸CMU 300 ensures premium cost effectiveness through a variety of features,
with extremely fast measurement speed
and very high accuracy being the two
most important ones. In addition, the
secondary remote addressing of the tester’s modular architecture makes for intelligent and autonomous processing of
complete measurement tasks and fast
control program design.
Maximum accuracy
In a production environment, the tester‘s high accuracy allows devices under test to be tested for optimal mobile
network performance. In the lab, the
¸CMU 300 enables the development
engineer to replace conventional, dedicated premium-quality instruments
and save desktop space at the same
time. High-precision measurement
correction over the entire frequency and
dynamic range as well as compensation
for temperature effects in realtime
are critical factors for achieving the
¸CMU 300‘s excellent accuracy.
The new, globally standardized,
Rohde & Schwarz calibration system can
check the ¸CMU 300‘s accuracy at
a service center close to you or, in some
cases, on your premises. A worldwide
network of these standardized automatic calibration systems has been implemented in our service centers. Highly accurate and repeatable calibration can be
performed wherever you are. Your local
Rohde & Schwarz representative offers
customized service contracts.
Top speed
The high processing speed is due to
extensive use of ProbeDSP™ technology,
parallel measurements and innovative
remote command processing. These
three aspects of the performance of the
¸CMU 300 are explained in more detail below.
ProbeDSP™ technology
The modular architecture relies on decentralized ProbeDSP™ processing coordinated by a powerful central processor.
Like an oscilloscope probe, DSPs dedicated to a specific local data acquisition
and evaluation workload help to keep
subsystem performance at a maximum
even if additional modules are fitted to
the ¸CMU 300 mainframe.
Innovative remote processing
The novel secondary addressing mode
can address similar functions of each
of the ¸CMU 300‘s subsystems (different mobile radio standards) in an almost identical way. Using this type of
addressing, new remote test sequences
can be programmed by a simple cut-andpaste operation followed by the editing
of specific commands to adapt the control program to the new application. Secondary addressing is fully SCPI-compliant, which means that a subsystem address, for example GSM 1800, can be
replaced by a string denoting a different subsystem (another mobile radio
standard).
Speed
Single measurement up to 10 times
◆
faster than with the previous generation of instruments
Accuracy
Three times more accurate than the
◆
previous generation of instruments
with excellent repeatability
Modularity
Modular hardware and software con-
◆
cept providing easy expansion to enhanced functionality
Bullet-proof
Low component count, low power
◆
consumption, and effective heat conduction for unparalleled reliability
Future-proof
Easy migration to future standards
◆
Exceptional reliability
The keys to the high reliability of the
¸CMU 300 are the low power intake
and the innovative cooling concept. Less
power means less heat. Power consumption is way below 250 W due to specially
selected low-power components, the
minimum component count concept,
plus low voltage design wherever possible.
The ¸CMU 300 employs ultra-effective heat management between housing and individual components as well
as between heat sinks and air flow. Independent cooling cycles for the front
module controller, the power supply unit
and the RF frontend add up to an optimized cooling system.
Univer sal Radio Communication Tester ¸CMU 300 3
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4 Univer sal Radio Communication Tester ¸CMU 300
Base unit
As the ¸CMU 300 has a modular
architecture, the base unit comes without any network or standard-specific
hardware and software. The base unit
can be used for testing the general
parameters of RF modules at early
production stages. Integral parts of the
¸CMU 300 base unit are the RF generator and RF analyzer, which are complemented by a versatile, network independent time domain menu and a comprehensive spectrum analyzer.
Besides featuring a convenient operational concept, the spectrum analyzer
stands out for a continuous frequency
range (10 MHz to 2.7 GHz) and several
selectable resolution bandwidths. The
zero span mode represents a separate
operation group with sophisticated trigger and timing functions (pre-trigger,
delay, time-base, slope).
The RF switching matrix is one of the
¸CMU 300‘s highlights. It is located
directly behind the connectors and yields
a superior VSWR of better than 1:1.2.
The instrument can be easily adjusted to
the DUT by means of four flexible N connectors. Two connectors (RF1, RF2) are
configurable as duplex RF interfaces.
One connector is for high-power base
stations up to +47 dBm, and the other
one is for micro base stations with a
maximum output power of +33 dBm.
In addition, the instrument is equipped
with a high-power output (RF3 OUT; up
to +13 dBm) and a sensitive input
(RF4 IN; –80 dBm to 0 dBm). The power
of incoming RF signals can thus be analyzed in the range from +47 dBm down
to –80 dBm. Signals from –130 dBm
up to +13 dBm can be generated for
receiver tests.
The rear-panel reference input and output is the prerequisite for minimizing
systematic frequency errors during
measurement. It is fitted as standard.
Besides the IEEE and RS-232-C interface,
the base unit has two PCMCIA slots.
Operation
The instrument can be operated either
manually or via the IEC/IEEE bus. The
hierarchical menu structures in conventional communication testers have been
replaced by context-sensitive selection,
entry and configuration pop-up menus,
which results in a uniquely flat menu
structure.
Owing to the high resolution of the extremely bright high-contrast TFT display
even the finest details can be displayed.
To increase speed, measurements that
are not required can be switched off,
which frees resources for the measurement you want to focus on.
Advanced operational ergonomics have
been incorporated into an extremely
compact package. Even with the rackmount kit, the ¸CMU 300 does not
exceed four height units.
Page 5
The base unit incorporates
generic RF analyzer/generator functions.
The zero span mode of the
spectrum analyzer is optimized for all kinds of RF
signals.
The spectrum analyzer provides several marker functions for a comprehensive
investigation of the signal
applied.
Univer sal Radio Communication Tester ¸CMU 300 5
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6 Univer sal Radio Communication Tester ¸CMU 300
Introduction to GSM/EDGE
Tailor-made with options
The basic version of the ¸CMU 300
already offers signal generator and spectrum analyzer functionality. It is converted into a GSM radiocommunication tester (transmitter and receiver measurements for GMSK modulation) by adding
the ¸CMU-B21 hardware option
(signaling unit) and at least one of the
five GSM software options.
GT 800 (¸CMU-K36)
◆
GSM 850 (¸CMU-K34)
◆
GSM 900 (¸CMU-K31)
◆
GSM 1800 (¸CMU-K32)
◆
GSM 1900 (¸CMU-K33)
◆
All GPRS channel coders are thus available in the ¸CMU 300, which is essential. The GSM functionalities can be extended to EDGE (TX and RX test functionality) by means of the ¸CMU-K41 software option, which also adds EGPRS channel coders. The ¸CMU-K39 software
option allows link setup using the standard
call procedures MOC/MTC (mobile originated/terminated call). The available hardware options include a highly accurate, oven-controlled crystal (¸CMU-B12) and
an A
board (¸CMU-B71). This board
bis
is needed for BER tests where the bit pattern sent by the ¸CMU 300 is returned
to the ¸CMU 300 via the A
interface.
bis
Non-signaling mode
This mode is particularly suitable for
testing RF boards/modules with little or
no signaling activity. The measurement
starts completely independently from external trigger signals or signaling information. As soon as RF power is applied
to the input, the tester starts to sample the incoming RF signal. When the
corresponding RF parameters are calculated and displayed, the instrument
is ready for the next measurement. All
GSM/EDGE-specific TX measurements
on signals with appropriate modulation
scheme and midamble are available. In
addition, the ¸CMU 300 is able to
generate signals with GSM/EDGE-specific midamble and modulation in the
entire frequency range from 10 MHz
to 2.7 GHz. The analyzer and generator
functionalities are not linked, i.e. any
channel spacing between uplink and
downlink signals is possible.
Signaling mode
The signaling mode is provided for testing modules or base stations supporting
a certain level of signaling. In this mode,
the tester operates synchronously to the
BTS, i.e. it is synchronized to the TDMA
frame structure, which is vital for receiver bit-error-ratio measurement. All transmitter parameters can be tested separately for each timeslot. This function is
necessary for testing base stations that
support both GSM and EDGE. The ability to code/decode channels in realtime
is the basis for synchronized measurements. The instrument can be synchronized to the base station in the following ways:
If the BTS has a multiframe clock out-
◆
put, the signal can be used to trigger
the ¸CMU 300. An additional trigger line has to be taken into consideration. For BER tests and EDGE TX
tests, the 26 multiframe trigger is required
If only the RF connection is used, the
◆
tester can synchronize to the C0 carrier of the base station, just like a mobile phone. This simplifies the test
setup. However, a CCH carrier including FCCH/SCH channels and system
information 1 to 4 must be activated
in the BTS before measuring the traffic channel used
After successful synchronization permanent resynchronization to SACCH of TCH
takes place.
Call setup
In the signaling mode, the ¸CMU 300
is able to provide a mobile simulation
(optional) with mobile originated call
(MOC), mobile terminated call (MTC) and
location update procedures. This is necessary whenever the complete signaling
of the BTS air interface is to be tested,
the BTS is in slow frequency hopping
(SFH) mode or the BTS measurement reports have to be checked. During location update, MOC and MTC, the layer 3
messages exchanged between the
¸CMU 300 and the base station are
shown on the TFT display. The IMEI and
IMSI numbers of the simulated mobile
phone (¸CMU 300) must be entered
manually, no SIM card being used.
Page 7
The non-signaling mode allows GMSK/8PSK signals
to be generated and
analyzed for RX/TX module
testing; the hotkeys at the
bottom of the screen provide immediate access to
specific measurements.
The signaling mode overview menu informs the user quickly and comprehensively about the BTS‘s TCH
RF performance; timeslotselective measurements
are possible.
There are different possibilities for setting up the
channel to be measured
in the Connection Control
pop-up menu.
Univer sal Radio Communication Tester ¸CMU 300 7
Page 8
GSM/EDGE BTS
¸CMU300 for GSM/EDGE
Modulator
Modulator
Demodulator
Demodulator
Channel
Decoder
Channel
Decoder
Channel
Coder
Channel
Coder
Data
Analyzer
Data
Analyzer
Data
Source
Data
Source
RAW BER
RAW BER
BER
RBER
FER
BER
RBER
FER
¸CMU
Data
Loops
BTS
Data Loops
BTS
Controller
E1/T1
Monitor Board
(A
bis
)
E1/T1
Interface
Board
(A
bis
)
A
bis
Data Loop
(BER, RBER, FER)
8 Univer sal Radio Communication Tester ¸CMU 300
GSM/EDGE RX (BER) measurements
Principles
When it comes to receiver characteristics, the physical effects appear in the
DUT itself so direct measurement is not
possible. The GSM standardization committees therefore defined test methods
for measuring the receiver characteristics of GSM/EDGE BTSs. These test
methods specify two logical reference
points inside the BTS where the receiver quality must be defined. These reference points are located behind the demodulator and behind the channel decoder. The basic principle of bit error
ratio (BER) testing is simple. The
¸CMU 300 sends a data stream to
the BTS, which then sends it back to the
tester (loop); i.e. the signal to be analyzed is forwarded from the reference
point inside the BTS to the external BER
analyzer by means of different loops. The
¸CMU 300 compares the sent and
received uncoded data bits to determine
the number of bit errors. Two essentially
different loops are used:
The BTS is set to close its RF loop di-
◆
rectly after the logical reference
points. The received data is returned
on the RF downlink path. The benefit
of this measurement principle is that
no extra cabling is needed besides
the ordinary RF connection. This approach is an easy way of testing the
most important GSM/EDGE channel
types.
Using the A
◆
loop the decoded signal
bis
is forwarded to the BER analyzer via
the A
output of the BTS. This test
bis
path is often required when loop activation inside the BTS is not possible.
Absolute receiver sensitivity
Based on realtime BER capability the user can directly vary the transmitter level
during the test by means of numeric entry or the rotary knob. This is a fast and
easy way to determine absolute receiver
sensitivity.
Receiver stress test
For this application, the ¸CMU 300
provides different transmitter levels for
the active timeslot and for the unused
timeslots (dummy bursts). The receiver
in the BTS can thus be subjected to unfavorable conditions in the unused timeslots.
Pseudo-random bit streams
The tester uses a choice of four true
pseudo-random bit sequences for BER
measurement. You will especially appreciate this feature if you have ever overlooked a faulty channel coder by using a
fixed bit pattern, because a pseudo-random sequence is the only reliable means
of detecting it. For transmitter measurements the BTS RF loop can also be kept
closed outside BER measurements. This
is a simple way of providing the transmitter signal modulated with pseudorandom bits required for spectrum and
power measurements.
Setup for BER Testing.
Page 9
RAW BER test
In the burst-by-burst mode, the
¸CMU 300 transmits only bits without error protection such as class II bits.
The loop in the BTS under test has to be
closed before channel decoding/coding,
so that raw bits are measured and the
BER is evaluated on a burst-by-burst
basis.
BER test of TCHs
Circuit-switched traffic channels can be
tested in the BER or residual BER (RBER)/
frame erasure ratio (FER) test modes. The
instrument supports the RF loop and the
A
loop (option ¸CMU-B71 required).
bis
A cyclic redundancy check (CRC) excludes
bit errors on the return path (downlink)
from the BTS to the ¸CMU 300. Additionally, the instrument itself can be used
as a loop on the Um air interface, which
means that it can loop back information
from the RF downlink to the uplink including decoding/coding. The BER result indicates errors of class Ib/II bits. In the RBER/
FER mode, the errors of class Ib/II bits of
non-erroneous frames are calculated and
frames with erroneous class Ia bits are
taken into account (FER). All important
adaptive multirate (AMR) traffic channels
(full rate/half rate) can be tested.
BER test of PDTCHs
For packet-switched data traffic channels,
the bit error ratio test is modified in such
a way that the BTS loops back the received data packets on a block-by-block
basis (loop behind channel decoder required) and measures the BER and the
data block error ratio (DBLER). The test
setup is similar to the one used for circuitswitched channels. The test is based on
an RF connection, where one timeslot
is permanently used on the uplink and
downlink with packet-switched channel
coding being active. No attach/detach
functionality is required because no RLC/
Univer sal Radio Communication Tester ¸CMU 300 9
MAC layer is involved.
BER evaluation of a GSM AMR channel.
Channel type Possible tests Supported BTS/
No coding Burst by burst
(RAW BER)
TCH/FS TCH/HS
TCH/EFS
TCH/F14.4 TCH/
F9.6 TCH/F4.8
TCH/H4.8 TCH/
H2.4
E-TCH/F43.2 NT
PDTCH-CS1
PDTCH-CS2
PDTCH-CS3
PDTCH-CS4
PDTCH-MCS1
PDTCH-MCS2
PDTCH-MCS3
PDTCH-MCS4
PDTCH-MCS5
PDTCH-MCS6
PDTCH-MCS6
PDTCH-MCS7
PDTCH-MCS8
PDTCH-MCS9
TCH/AFS
TCH/AHS
BER/RBER/FER BTS (BSC) BER
BER BTS (BSC) BER
BER BTS (BSC) BER
BER/DBLER BTS (BSC) BER
BER/DBLER BTS (BSC) BER
BER/RBER/FER BTS (BSC) BER
BSC loops
BTS loop
demodulator/
modulator
loop with channel decoding;
(optional loop
via A
)
bis
loop with channel decoding
loop with channel decoding
loop with channel decoding
loop with channel decoding
loop with channel decoding
Overview BER testing.
Supported
loops inside
¸CMU 300
¸CMU 300
RAW BER loop
¸CMU 300
BER loop
with channel
decoding
¸CMU 300
BER loop
with channel
decoding
¸CMU 300
BER loop
with channel
decoding
¸CMU 300
BER/DBLER loop
with channel
decoding
¸CMU 300
BER/DBLER loop
with channel
decoding
¸CMU 300
BER loop
with channel
decoding
Channel setup
procedure
Forced channel
setup without
signaling
Forced channel
setup procedure
(optionally
MOC/MTC)
Forced channel
setup procedure
(optionally MOC/
MTC for full rate
channels)
Forced channel
setup without
signaling
Forced channel
setup without
signaling (one
static TS active
on up-/downlink)
Forced channel
setup without
signaling
(one static TS
active on up-/
downlink)
Forced channel
setup without
signaling (one
static TS active
on up-/downlink)
Required software options
¸CMU-K31
to -K34
(
¸CMU-K41
optional for 8PSK
¸CMU-K31
to -K36
(optionally
¸CMU-B71,
¸CMU-K39)
¸CMU-K31
to -K36
(¸CMU-K39
optional)
¸CMU-K31
to -K36 and
¸CMU-K41
¸CMU-K31
to -K36
¸CMU-K31
to -K36 and
¸CMU-K41
¸CMU-K31
to -K36 and
¸CMU-K37
Comments
GMSK and
8PSK supported
)
Special BTS
test mode
required, no
RSC/MAC
involved
Special BTS
test mode
required, no
RSC/MAC
involved
Special BTS
test mode
required
Page 10
10 Univer sal Radio Communication Tester ¸CMU 300
Additional functions for GSM/EDGE conformance tests
RACH test
The ¸CMU 300 transmits a sequence
of random access bursts on the random
access channel (RACH) to the base station and analyzes the frame erasure ratio
(FER) of the immediate assignments that
are returned by the base station controller (BSC). The number of bursts to be
transmitted and the intervals between
them can be varied. The test setup of the
RACH test must reflect the conditions of
the real network, i.e. the base transceiver station (BTS) must be controlled by
the BSC or the BSC simulator.
Applications
Network stress tests for checking the
◆
maximum registration capacity
Sensitivity measurements with refer-
◆
ence to the RACH
RACH test.
Configuration of
signaling channels
and hopping list.
Test of signaling channels
For conformance tests, the ¸CMU 300
provides the following uplink signaling
channels modulated with PSR data
(option ¸CMU-K38):
FACCH/F
◆
SACCH
◆
SDCCH/4
◆
SDCCH/8
◆
The PSR data must be evaluated in the
BTS or its controller.
Test of base stations in slow frequency hopping mode
If a base station supports the hopping
mode, it must be tested in accordance
with the 3GPP TS 51.021 base station
specifications under hopping conditions.
It must therefore be possible to set the
instruments to the hopping mode. The
¸CMU 300 provides the following
options:
Activation by call
The tester synchronizes to the BCCH.
The channel to be tested is activated via
the standard MOC/MTC call procedures.
The base station transmits the following
parameters required for hopping:
Mobile allocation index offset (MAIO)
◆
Hopping sequence list
◆
On the basis of the current frame number, the ¸CMU 300 starts hopping in
accordance with the ETSI specifications.
Forced hopping
In contrast to the above, the parameters
are manually entered into the tester.
The traffic channel must be activated
without a signaling procedure. The previously synchronized ¸CMU 300 then
starts hopping on the basis of the current frame number in accordance with
ETSI specification TS 05.02.
Page 11
GSM TX measurements
GMSK
Phase and frequency error
The actual phase of the signal received
from the base station is recorded during
the entire burst and stored. The transferred data is demodulated and the
training sequence searched for. The middle of the training sequence (transition
between bits 13 and 14) is used for time
synchronization.
The complete data content of the burst
is then mathematically modulated using
an ideal modulator. The resulting ideal phase is compared with the measured
phase. From the difference between the
two quantities (the phase difference trajectory), a regression line is calculated using the mean square error method. The phase error is the difference between the phase difference trajectory
and the regression line; it is calculated
and plotted over the whole useful part of
the burst. The average frequency error in
the burst is equal to the derivative of the
regression line with respect to time.
The ¸CMU 300 evaluates the phase
error with a resolution of 4 measured
values per modulated bit, which corresponds to a sampling rate of approx.
1 MHz.
Spectrum measurements
The spectrum measurement determines
the amount of energy that spills out of
the designated radio channel when the
base station transmits with predefined
output power. The measurement is performed in the time domain mode, at a
number of frequency points symmetrically distributed around the nominal frequency of the designated channel.
Power versus slot measurement.
Power measurements
The signal power received from the base
station is displayed as a function of
time (burst analysis) over one burst period. The measurement graph can be further processed to determine an average,
minimum or maximum result as well as
to calculate the average over the entire burst. In addition to the burst power measurement, a limit check with tolerances is performed. The displayed continuous measurement is derived from
668 equidistant measurement points
with ¼ bit spacing, covering a time
range of 156 ¾ bit.
In the signaling mode only, a second application is available – the power versus
slot measurement. The power versus slot
measurement determines the average
burst power in all eight timeslots of a
TDMA frame. The average is taken over
a section of the useful part of the burst;
it is not correlated to the training sequence. The result is displayed as eight
bargraphs (one for each time slot of a
single frame) which allows a very large
number of bursts to be measured in extremely short time. Therefore this application is suitable whenever the behavior or stability of the average burst power in consecutive timeslots is to be monitored. Another highlight of this measurement is the fact that power results are
available almost in realtime. The power versus time measurement, however, returns the current, average, maximum and minimum value within a statistic cycle.
Univer sal Radio Communication Tester ¸CMU 300 11
Page 12
12 Univer sal Radio Communication Tester ¸CMU 300
EDGE TX measurements
8PSK
8PSK/EDGE is another step toward increasing the mobile radio data rate. By
using the available GSM frame structure,
the gross data rate is three times that obtained with GMSK. The ¸CMU 300
can already perform 8PSK on GSM bursts
and analyze them owing to advanced
measurement applications. Error vector
magnitude and magnitude error have
been added to the range of modulation
measurements. New templates for power
versus time measurements ensure compliance with the specifications, as do the
modified tolerances for spectrum measurements. As with all measurements
provided by the ¸CMU 300, special
attention has been given to achieving
maximum measurement accuracy and
speed for EDGE. All measurement tolerances are set to GSM specification 3GPP
TS 51.021 by default but may of course
be altered to suit individual needs.
Modulation analysis
For modulation analysis, the actual modulation vector of the signal received from
the base station is measured over the
complete burst and stored. The following
non-redundant quantities are calculated
on the basis of a comparison of this
vector with the computed ideal signal
vector:
Phase error
◆
The phase error is the difference between the phases of the measured
and the ideal signal vector.
Magnitude error
◆
The magnitude error is the difference
between the magnitudes of the measured and the ideal signal vector.
Error vector magnitude (EVM)
◆
The EVM is the magnitude of the vector connecting the measured and the
ideal signal vector. In contrast to the
previous quantities, the EVM cannot
be negative.
These three quantities are calculated as
a function of time and displayed over
the whole useful part of the burst (symbols 6 to 162), each of them in a separate graphical measurement menu. In
addition, the peak and RMS values of all
three quantities are calculated (over the
entire display range or over the first ten
symbols only) and displayed. Finally, the
modulation analysis provides the following scalar quantities:
95:th percentile
◆
Limit value below which 95% of
the values of a measurement graph
are located. The 95:th percentile of a measured quantity has the
same unit as the quantity itself. The
¸CMU 300 determines 95:th percentiles for EVM, magnitude error
and phase error
Origin offset
◆
The origin offset in the I/Q constellation diagram reflects a DC offset
in the baseband signal. The origin
offset corresponds to an RF carrier
feedthrough
I/Q imbalance
◆
Amplitude difference between the inphase (I) and the quadrature (Q) components of the measured signal, normalized and logarithmic. The I/ Q imbalance corresponds to an unwanted
signal in the opposite sideband
Frequency error
◆
Difference between the measured
frequency and the expected frequency. For the tolerance check, all three
phase error graphs can be fitted into
a tolerance template and checked
Power measurements
The 8PSK power versus time measurement results are similar to the GMSK
measurement results. With 8PSK modulation the time axis is scaled in symbol points. 8PSK symbols and GMSK bits
have the same transmission rate.
Owing to the characteristics of 8PSK
modulation, the amplitude of the RF signal varies according to the data transmitted.
The average setting ensures that a correct reference power is used, the results
being averaged, however, over an extended measurement time. In data-compensated mode, a known data sequence
is used to correct the measured average
power of the current burst and estimate
the correct reference power.
The ¸CMU 300 can be used to check
the power ramps of up to 4 successive
bursts for multislot applications. Measurements are performed in the signaling measurement mode and can automatically adapt the power ramp required in each burst to the type of modulation used (GMSK or 8PSK). This feature makes the instrument ideal for testing transmitters that must support both
types of modulation.
Page 13
The newly designed
spectrum application
allows the simultane-
ous measurement of
spectra due to switch-
ing and modulation.
Moreover, the user
can select a frequen-
cy offset (spectral line)
by means of a mark-
er and display it in the
time domain. Transient
characteristics in spec-
trum-due-to-switch-
ing measurements can
thus be shown as a
function of time.
The 8PSK EVM graph
and decoded data bits
can be displayed.
The power-versus-time
multislot application
can graphically display
up to 4 adjacent time-
slots, automatically de-
tect GMSK- and 8PSK-
modulated signals and
activate the associated
templates in realtime.
A new zoom function
allows full-screen dis-
play of each slot.
By means of the 8PSK
I/Q analyzer, the signal
can be displayed in the
constellation, phase or
vector diagram.
GSM/EDGE highlights of the
¸CMU 300
Synchronization to BTS
Via BTS multiframe trigger
◆
Via RF synchronization procedure to
◆
CCH
Activation of channel to be measured
Without call procedure
◆
Simulation of mobile station including
◆
location update and MOC/MTC call
procedures
GMSK/8PSK measurements
Phase/frequency error (GMSK)
◆
EVM including magnitude error,
◆
origin offset, I/Q imbalance (8PSK)
Power versus time
◆
Power versus slot (GMSK)
◆
Peak power/average burst power
◆
General spectrum measurements
◆
RAW BER, BER, RBER/FER measure-
◆
ments on circuit-switched channels
BER/DBLER measurements on
◆
packet-switched channels
BER/FER measurements on AMR
◆
channels
Additional features
Realtime channel coding/decoding
◆
Timeslot-selective measurements in
◆
signaling mode
Flexible RF interface for easy adapta-
◆
tion to DUT
Hopping on packet-switched chan-
◆
nels (PDTCH) supported
RACH test
◆
Additional features for conformance
◆
testing
Generation of UL signaling channels
◆
Support of different BER test environments/loops
BTS loop without channel coding
◆
BTS loop with channel coding
◆
Loop via A
◆
¸CMU 300 as RF loop with chan-
◆
interface
bis
nel coding
Univer sal Radio Communication Tester ¸CMU 300 13
Page 14
Node B
¸CMU300
Radio (TRX)
Node B
Controller
Transmitter
Receiver
Synchronous RF Analyzer
Control
Interface
Synchronous RF Generator
Signaling Receiver
(Demodulator, FEC, Data Analyzer)
SFN Trigger
SFN Trigger
CPICH/BCH
Synchronization
Air
Interface
14 Univer sal Radio Communication Tester ¸CMU 300
WCDMA
Introduction to WCDMA
The need for higher data rates is a consequence of an information-oriented society in the new millennium. The enhancement of mobile devices takes this
need into account. Next-generation
wireless communication poses new challenges as a consequence. Driven by
ideas of the first and second generation
(SIM, global roaming, military CDMA
technology, data services), WCDMA
takes all fundamentals to unprecedented levels and adds new application fields
as well as application-tailored data security. Derived from Asian, American and
European ideas, 3G networks are the
mobile solution for future needs as well
as the current mainstream.
WCDMA FDD functionality
The tests provided by the ¸CMU 300
are currently based on the 3GPP/FDD
Release 5 WCDMA radio link standards.
Regular adaptations to new baselines
will be made available as the standard
evolves; the ¸CMU 300 thus already
supports HSDPA TX measurements.
Most of the measurements offered
comply with the 3GPP specification
TS 25.141 FDD, chapter 6 (Transmitter
Characteristics) and chapter 7 (Receiver
Characteristics). The ¸CMU 300 can
be equipped with an FDD transmitter
tester, a realtime FDD generator and
an FDD downlink signaling receiver.
Depending on the application, only the
first or the first two options are needed, allowing T&M budgets to be optimized. The three options allow the
¸CMU 300 to be configured for nonsignaling TX, TX/RX or layer 1 signaling
TX/RX measurements and functional
testing in line with 3GPP specification.
Due to the highly user-friendly menu
concept, the ¸CMU 300 provides
quick access to all required measurements and optimizes the handling and
thus the efficiency of complex measurement tasks with appropriate status messages and built-in statistical functions.
FDD non-signaling mode
The non-signaling mode is for generating and analyzing WCDMA (3GPP/
FDD) signals in the full frequency range
of the ¸CMU 300 base unit and allows static tests of all essential RF parameters of the connected Node B.
The ¸CMU 300 provides WCDMA-
specific TX measurements on userconfigurable downlink code channel
combinations. The measurements are
performed in unsynchronized mode. The
FDD generator supports all reference
measurement channels (RMC) defined
in the specification up to a data rate of
2 Mbit/s, thus making the instrument
ideal for receiver measurements.
FDD signaling mode
The signaling mode combines high-precision Node B RF parameter tests with
layer 1 signaling processes by means of
an additional WCDMA realtime signaling receiver. Thus, Node Bs can now be
tested under more realistic conditions
as was possible with existing static concepts. The increasing use of fast UMTS
data services makes the time aspects
of Node B tests more important. Static tests are currently being performed
to find out whether the values of essential Node B transmit parameters (power, modulation, spectrum, code domain)
meet specifications. However, increasing
data throughput rates additionally require that correct radio channel parameters are also set at the right time.
Test setup of
WCDMA/HSDPA
signaling mode.
Page 15
WCDMA
RF generator for 3GPP FDD RX measurements
Sensitivity measurements on
base station receivers
WCDMA generators are used to test
receivers in base stations (Node B) as
well as their modules. The bit error rate
(BER) of the uplink signal generated by
the ¸CMU 300 can be measured directly in the base station or in the connected radio network controller. For
BER measurements, the analyzer must
be synchronized to the received signals.
Particularly for reference measurement
channels (RMCs) of 3GPP specification
TS 25.141, the transmitter must emit
them in a defined format at a specific
transmission time interval (TTI). For this
purpose, the ¸CMU 300 provides a
frame trigger input. The ¸CMU 300
is capable of inserting bit errors and
block errors in the generated signal. This
allows the internal BER/BLER calculations of the base station to be checked
in line with the specification. To simulate
real receive conditions, additive white
Gaussian noise (AWGN) can be superimposed on the wanted signal. Thus, highly
accurate sensitivity measurements can
be performed on receivers with a defined S/N ratio.
Functions and operating modes
The generator parameters defined in
3GPP specification TS25.141 (FDD)
ensure standardized measurements. The
WCDMA generator of the ¸CMU 300
supports all data rates defined for the reference measurement channels (RMCs),
i.e. 12.2/64/144/384 /2048 kbit/s. If one
of these RMCs is selected, essential parameters for BER measurement such as
coding, slot format or time transmission
interval are defined. Moreover, the user
can also set customized channel combinations. In addition to the reference channel mode, the WCDMA generator supports the physical channel mode. In this
case, the generator creates one dedicated
physical control channel (DPCCH) and up
to six data channels (DPDCH). The associated data rates can be flexibly selected
in the range 1×15 kbit/s to 6×960 kbit/
s. The test data at the transport channel
layer is applied either to the reference
measurement channels or directly to
the physical channels. Pseudo-random
bit sequences PRBS9/11 /15 and 16 as
well as fixed data (00000…, 11111…,
010101…) are available as test data.
The signal power in particular can be
set in almost any manner designed for
BER measurements. The user is able to
set the total power as well as the power of the control channel and the power
ratio of the DPCCH and the DPDCH. The
¸CMU 300 offers a wide variety of
further settings which by far exceed the
RMCs defined by 3GPP. At the physical
layer, the TFCI code word and the TPC
bit pattern can be varied. If channel coding has been activated, the generator
calculates the TFCI code word with the
associated TFCI bits. These settings allow the control of a base station receiver via the uplink signal. The base station
receiver receives the TPC bits and controls the power according to the selected downlink power control mode. At the
transmitter end, the ¸CMU 300 supports power control modes 1 and 2. In
mode 1, the transmit power of the generator changes in every alternating slot,
increasing or decreasing by 1 dB or 2 dB.
In mode 2, transmit power is constant.
Because of signal generation in realtime,
continuous BER tests can be performed
without wrap-around problems.
The ¸CMU 300 in the
reference channel mode
with selected 2 Mbit/s
channel.
Univer sal Radio Communication Tester ¸CMU 300 15
Page 16
16 Univer sal Radio Communication Tester ¸CMU 300
WCDMA
3GPP FDD TX measurements
The following measurements can be performed both in non-signaling and signaling mode.The signaling mode allows
time-synchronized measurements at precisely defined system times without having to use additional trigger interfaces.
Code domain power (CDP)
Precise power control in uplink and
downlink is essential in CDMA systems.
The CDP measurement analyzes power
distribution across the individual code
channels by recording and measuring a
complete WCDMA frame for each measurement cycle. The screen is divided into three sections to handle the complex
signal structure. In the top section, the
CDP is displayed as a function of all
codes. Active code channels are colorhighlighted and combined to form a bar
whose width depends on the spreading
factor. In the center section, the CDP of
a selected code is displayed as a function of time. Since the individual code
channels may be time-delayed with respect to the frame start, the center diagram contains two time scales. The common pilot channel (CPICH) is used as a
reference for the different measurement
results because it is not time-delayed
(displayed on the first scale). A second
scale refers to the selected code channel. In the lower section, the CDP and
other measurements are displayed as
scalar values referring to the selected
CPICH slot. This yields an overview of
the behavior of important parameters.
Toggling between the individual test
menus is thus unnecessary.
Code domain error power (CDEP)
The CDEP is an analysis of the error signal in the code domain, i.e. the projection of the error power onto the individual code channels. As with the CDP
measurement, the screen is divided into
three sections. The CDEP is to be measured across a CPICH slot with a defined
spreading factor.
Occupied bandwidth (OBW), spectrum
emission mask (SEM) and adjacent
channel leakage ratio (ACLR)
OBW, SEM and ACLR are additional imThe top diagram displays the CDEP as a
function of all codes in the selected CPICH slot. In the center diagram, the peak
code domain error power (PCDEP) is
portant measurements for the spectral
analysis of a WCDMA transmitter. The
¸CMU 300 conveniently provides
them as “single key” measurements.
displayed as a function of all 15 frame
slots. Here, too, comprehensive means
for analysis are available. For example,
Multicarrier operation
if there is a particularly high PCDEP in a
slot, the CDEP as a function of all codes
can be viewed by selecting this slot, and
thus the code channel with the maximum error can be detected.
Today’s base stations increasingly im-
plement multicarrier operation. The
¸CMU 300 can perform measure-
ments in true multicarrier environments;
up to four carriers running simultaneous-
Error vector magnitude (EVM)
In the time domain, the EVM is equiva-
ly on a base station will have minimal ef-
fects on the measurement results.
lent to the CDEP in the code domain. The
EVM is the difference between the ideal
reference signal and the processed test
signal. In contrast to the CDEP, the er-
Automatic detection of active
channels and their data rate
ror is analyzed at the chip level, so that
errors are shown as a function of time
on the basis of the chip offset from the
selected CPICH slot. Analysis is again
frame-based; therefore all RMS values of
the individual slots are also displayed as
a function of time.
The user-selectable scrambling code,
must be known for any code domain
measurement. 3GPP FDD signals may
use different spreading factors and data
rates in the various channels. The data
rates can be automatically detected and
must not be known beforehand.
Measurement R&S CMU-K75
Maximum output power
CPICH power accuracy
Frequency error
Power control dynamic range
Total power dynamic range
Occupied bandwidth
Spectrum emission mask
Adjacent channel leakage ratio
Error vector magnitude
Peak code domain error power
1)
The R&S CMU-K79 is requir ed for HSDPA-capable bas e stations.
Supported TX tests of 3GPP specification TS 25.141 (FDD).
✓
✓
✓
✓
✓
✓
✓
✓
1)
✓
✓
1)
Page 17
WCDMA
Automatic detection of active channels and their data rate. Base station output power measurement.
Composite Error Vector Magnitude (EVM) measurement on a HSDPA test
model.
Peak Code Domain Errror (PCDE) measurement on a HSDPA test model.
Univer sal Radio Communication Tester ¸CMU 300 17
Adjacent Channel Leakage Ratio (ACLR) measurement.
Code domain power (CDP) measurement on a HSDPA signal containing
5 × HS-DSCH and 4 × HS-SCCH channels. The ¸CMU 300 automatically demodulates QPSK or 16QAM codes and includes them in the code
domain analysis.
Page 18
Cell Channels
DPCH
UE
Node B
¸CMU300
18 Univer sal Radio Communication Tester ¸CMU 300
WCDMA
Dynamic measurement functions…
The signaling mode, in which the
¸CMU 300 synchronizes itself to the
Node B cell channels, offers the following advantages:
Simplification of the test setup since
◆
only RF connections are required and
since previously required Node B trigger interfaces can now be omitted.
Availability of dynamic measurement
◆
functions which were previously not
feasible or which required significant
technical and financial efforts.
Synchronization and triggering
Before time synchronization can be
performed, the Node B must first activate the CPICH and the BCH (mapped
on P-CCPCH) cell channels. The primary scrambling code must be set manually
on the ¸CMU 300.
By registering the Node B system clock,
transmitter measurements can be started now at specific points in time without
additional external triggering. Thus, critical moments such as changes in modulation mode can be analyzed exactly.
BCH monitoring
The BCH monitoring function offers a
convenient means of performing online
analysis of the cell system information
blocks (SIBs).
Realtime downlink logging
The downlink receiver of the tester allows you to completely record the following information:
System information (SIB) of the BCH
◆
Decoded useful data on TrCH level
◆
Code domain power of a code chan-
◆
nel including time stamp (SFN)
The data can be stored on the hard disk
of the instrument or accessed online on
an external PC via an RS-232-C interface.
The SIB offers a convenient means of
providing you with information on important Node B parameters.
By means of decoded useful data that
has been recorded, you can test whether
the Node B coding chain (FEC) is functioning error-free.
The slot-by-slot, highly accurate recording of the code power of a code channel makes it possible to check the down-
link closed loop power control mecha-
nism under dynamic conditions, as they
occur in the actual network (1500 mea-
surements per second).
RACH preamble test with AICH
analysis
The compact tester concept with data
generator and data analysis in one in-
strument allows to perform test sce-
narios that check for correct Node B
responses to UE queries in realtime.
Accordingly, the RACH preamble test
of the ¸CMU 300 is carried out in
accordance with 3GPP specification
TS 25.141 (FDD), chapter 8.8.1, as fol-
lows:
Start of the transmission of a pre-
◆
defined number of preambles. An
AWGN signal can also be superimposed on these preambles
Analysis of the Node B response by
◆
means of the AICHs received, including
calculation of the probability of detection of preamble (Pd) and probability of
false detection of preamble (Pfa)
Setup for monitoring and logging. AICH analysis window.
Page 19
Node B
¸CMU300
Radio (TRX)
Node B
Controller
Transmitter
Receiver
Data Analyzer
RF Generator (Data
Source, FEC, Modulator)
Signaling Receiver
(Demodulator, FEC,
Data Analyzer)
Data Source
Data Loop
Trigger
Synchronization to
Cell Channels
(P-CCPCH / BCH and CPICH)
Data Analysis:
DL RMC
Stimulation:
UL RMC
WCDMA
… of WCDMA signaling mode
Extensive BER test
In the past, bit error ratio (BER) tests
were mainly used to characterize the receive characteristics of the Node B. The
realtime receiver in the ¸CMU 300
significantly expands this function to
test the downlink in the same way. In
contrast to pure RF parameter measurements, the entire layer 1 is tested, including the FEC.
The following two scenarios are possible
Separate measurement of the BTS
◆
downlink (DL) and uplink (UL). In this
case, the DL data source and UL data analyzer must be provided by the
Node B controller. You can use different RMC types and data contents for
the DL and UL
Simultaneous measurement of both
◆
links by using a data loop (transport
layer) in the Node B or in its controller. You must use the same RMC type
and data content for both links
BER test setup.
Downlink analyzer functions
BER/BLER/DBLER analyzer: transport
◆
channel data evaluation
Supported DL reference measurement
◆
channels of 3GPP specification
TS 34.121 (FDD): 12.2/64/144/384/
2048 kbps
Data content: PRBS 9/11/15/16
◆
Continuous measurement with
◆
running averaging via a window of
up to 10 000 transport blocks
Alternatively, single shot measure-
◆
ment with up to 100 000 transport
blocks
The DL data analyzer can automati-
◆
cally resynchronize after loss of syn-
Downlink RMC data analysis (here, continuous measurement with averaging over 10 000 transport
blocks).
chronization, the number of the synchronization attempts being counted
in this case
Univer sal Radio Communication Tester ¸CMU 300 19
Page 20
UEs or UE simulator
UE1
UE128
Node B
¸CMU300
Radio (TRX)
Node B
controller
Transmitter
Receiver
Control
interface
Indication of 4xHS-SCCH
Signaling Receiver
(Demodulator, FEC,
Data analyzer)
HS-SCCH
monitoring
CPICH/BCH
synchronization
UE2
Throughput calculation
...
20 Univer sal Radio Communication Tester ¸CMU 300
APPLICATIONS
HSDPA applications of WCDMA signaling mode
Realtime HS-SCCH monitoring
The high-speed shared control channel
(HS-SCCH) is important for communication in HSDPA mode. It transfers information about the nature of the following high speed physical downlink shared
channel (HS-PDSCH) as well as information indicating which UE the data packet
is specified for.
The R&S CMU300 can simultaneously
monitor up to four HS-SCCH channels.
Moreover, the instrument can detect up
to 128 different UE-IDs. The information
of the detected HS-SCCHs is displayed
directly on the R&S CMU300’s user interface.
Setup for HS-SCCH monitoring and HSDPA throughput measurements.
Realtime HSDPA throughput
measurement
The cell throughput application measures the HS-PDSCH data rate and
throughput by analyzing the HS-SCCH
information. Up to four HS-SCCHs and
128 different UE-IDs can be monitored
and displayed in realtime. For each monitored UE-ID, the current throughput, the
average throughput and the maximum/
minimum values are analyzed.
HS-SCCH monitoring.
The bargraph shows a rough overview of
all UEs to be monitored. Depending on
the display mode, the bargraph shows
current, average, minimum or maximum
values. The different colors of the bars
show the data rate and throughput. To
show detailed measurement values, a
UE-ID index can be selected.
The selected UE-ID index is marked red
in the bar graph and the corresponding
UE-ID is displayed.
HSDPA throughput measurement.
Page 21
Node B¸CMU300
Radio (TRX)
Node B
Controller
Transmitter
Receiver
Control
Interface
Synchronous RF Generator
incl. Data Source
Signaling receiver
(Demodulator, FEC,
Data Analyzer)
Scheduling
Trigger
HS-DPCCH
Generator
(Manipulated ACK/NACK/CQI sequence)
Data Analysis
4 x HS-SCCH
Indication of HS-SCCH reaction
“Check“
“Stimulate“
APPLICATIONS
HSDPA uplink generator
The UL generator function simulates one
UE and activates an HSDPA uplink signal in addition to common physical and
3GPP reference measurement channel
types. The high-speed dedicated physical control channel (HS-DPCCH) can
be established with user-defined ACK/
NACK and/or channel quality indicator
(CQI) sequences.
Essential features:
User-definable, continuously repeat-
◆
ing sequence of up to 64 ACK/NACK/
OFF events
HSFN- or UE-ID-triggered activation
◆
of the ACK/NACK sequence
User-definable ACK/NACK power ratio
◆
User-definable number of subframes
◆
between two consecutive ACK/NACKs
HSFN-triggered activation of the CQI
◆
sequence
User-definable, continuously repeat-
◆
ing sequence of up to 64 CQI events
User-definable number of subframes
◆
between two consecutive CQIs
User-definable CQI power ratio
◆
HSDPA uplink generator configuration.
HSDPA “Stimulate & Check” testing
The “Stimulate & Check” test of the
HSDPA signaling mode is the combination of synchronous HS-DPCCH stimulation (uplink) and HS-SCCH monitoring
(downlink); the UE signal on the uplink
is activated by the UE-ID trigger derived
from HS-SCCH analysis on downlink. Every time a particular UE-ID is received,
an element of the user-defined ACK/
NACK sequence will be transmitted on
the uplink. Node B’s reaction on the
downlink can be checked simultaneously
using the HS-SCCH monitoring function,
which allows the time-critical behavior
of MAC-HS to be tested dynamically.
Univer sal Radio Communication Tester ¸CMU 300 21
Principle of HSDPA “Stimulate & Check” testing.
Page 22
22 Univer sal Radio Communication Tester ¸CMU 300
Options
Type Designation Order No. Remarks
Base unit
¸CMU 300 Universal Radio Communication Tester for BTS test 1100.0008.03 Base unit
GSM/GPRS/EDGE
Options for GSM/GPRS/EDGE non-signaling and signaling modes (RF parametric testing and layer 1 signaling)
¸CMU-B21 Hardware option for ¸CMU 300: versatile signaling unit 1100.5200.02
¸CMU-K31 Software option for ¸CMU 300: GSM900 for ¸CMU-B21 1115.4104.02 GSM900, R-GSM, E-GSM base station
¸CMU-K32 Software option for ¸CMU 300: GSM1800 for ¸CMU-B21 1115.4204.02 GSM1800 base station signaling/non-signaling
¸CMU-K33 Software option for ¸CMU 300: GSM1900 for ¸CMU-B21 1115.4304.02 GSM1900 base station signaling/non-signaling
¸CMU-K34 Software option for ¸CMU 300: GSM850 for ¸CMU-B21 1115.4404.02 GSM850 base station signaling/non-signaling
¸CMU-K36 Software option for ¸CMU 300: GSM GT800 for ¸CMU-B21 1150.4207.02
¸CMU-K41 Software extension for ¸CMU 300: 8PSK TX tests and channel cod-
1115.4604.02 Extension software: EDGE TX measurements
ers; ¸CMU-K31 to -K36 required
¸CMU-PK30 Software option for ¸CMU 300: GSM GT800 GSM850/900/1800/1900
1159.4100.02 GSM software package includes options
includes ¸CMU-K31-K36
Options for extended GSM/GPRS/EDGE functions
¸CMU-K37 Software option for ¸CMU 300: AMR test (GSM),
1150.4307.02 Extension software: AMR test (UL generator
¸CMU-K31 to -K36 required
¸CMU-K38 Software option for ¸CMU 300: signaling channels (GSM/UL) with
1150.3400.02 Extension software: uplink generator
PSR bit pattern modulation
¸CMU-K39 Software option for ¸CMU 300: MOC/MTC (circuit-switched/TCH),
1115.4791.02 Extension software: GSM signaling procedures
¸CMU-K31 to -K36 required
¸CMU-B71 Hardware option for ¸CMU 300: A
¸CMU-B21 and ¸CMU-K3X required
interface unit E1/T1 protocol,
bis
1100.6406.02 A
WCDMA/HSDPA
Options for WCDMA/HSDPA non-signaling and signaling modes (RF parametric testing and layer 1 signaling)
¸CMU-K75 Software option for ¸CMU 300: WCDMA TX test (3GPP/FDD/DL),
¸CMU-U75 required
¸CMU-K76 Software option for ¸CMU 300: WCDMA generator (3GPP/FDD/UL),
¸CMU-B78 required
¸CMU-K78 Software option for ¸CMU 300: BCH synchronization and monitoring
(3GPP FDD)
¸CMU-B78 Hardware option for ¸CMU 300: layer 1 board for WCDMA 1159.1800.02 Versatile WCDMA baseband board
Options for extended WCDMA functions
¸CMU-K70 Software option for ¸CMU 300: DTCH BER analysis (3GPP/FDD/DL) 1157.4602.02 Extension software: BER analysis on downlink
¸CMU-K71 Software option for ¸CMU 300: RACH testing (3GPP FDD) 1157.4702.02 Extension software: RACH preamble testing
¸CMU-K72 Software option for ¸CMU 300:
HS-SCCH monitor and HSDPA
throughput measurement, ¸CMU-K78 required
¸CMU-K73 Software option for ¸CMU 300: HSDPA stimulation, ¸CMU-K78
and ¸CMU-K72 required
1150.3200.02 WCDMA TX measurement software (power,
1150.3300.02 Software for WCDMA non-signaling mode; RF
1157.4802.02 Basic software for ¸CMU 300 signaling
1200.7603.03 Adds HS-SCCH analysis function and trough-
1200.7703.03 Adds HSDPA Uplink generator funtion to
Hardware basis for GSM/GPRS/EDGE testing
signaling/non-signaling test software
test software
test software
test software
GT800 (Chinese Railway) base station
signaling/non-signaling test software
and BER testing
¸CMU-K31 to -K36
and DL analyzer)
supporting GSM signaling channels
(PRBS-modulated signaling channels SACCH,
FACCH/F, SDCCH/4, SDCCH/8)
location update, MOC, MTC
interface board for monitoring A
bis
datastream during BER testing
uplink
bis
modulation, spectrum SEM/OBW/ACLR, code
domain)
signal generator for Node B RX testing/singleended BER testing
mode includes CPICH/BCH synchronization
procedure; BCH monitoring; RF signal generator for Node B RX testing/single-ended BER
testing; configurable trigger source
reference measurement channels
and AICH analysis
put measurement to option ¸CMU-K78.
Supported from software version V3.82 on.
option CMU-K72. Supported from software
version V3.82 on.
Page 23
Type Designation Order No. Remarks
¸CMU-K77 Software option for ¸CMU 300: AWGN generator and simultaneous
BER/BLER (3GPP/FDD/UL), ¸CMU-K76 required
¸CMU-K79 Software option for ¸CMU 300: HSDPA TX measurements
(non-signaling, 3GPP/FDD/DL), ¸CMU-K75 required
1150.4107.02 Extension software: adds BER simulation and
AWGN functionality to the RF generator
1150.4407.02 Extension software: HSDPA TX testing,
includes modulation and code domain measurements
Recommended accessories, further options
¸CMU-B12 Hardware option for ¸CMU200/300: reference oscillator OCXO,
aging 3.5×10–8/year
¸CMU-Z1 256 Mbyte memory card PCMCIA type 3;
accessory for ¸CMU200/300
¸ZZA-311 19” adapter, 3HU, 1/1 for design 2000 cabinets 1096.3277.00
¸CMU-DCV Documentation of calibration values 0240.2193.08
¸CMU-DKD ¸CMU200/300 DKD calibration including ISO 9000 calibration
(order only with device)
1100.5100.02 Highly stable OCXO
1100.7490.04
1159.4600.02
Functionality
WCDMA/HSDPA TX parametric tests
WCDMA
non-signalling
mode
WCDMA/HSDPA
signalling mode
mandatory option
extended functionality
R99 uplink
generator
BCH synchronization, BCH analysis
and triggering
BER test includes
uplink generator
and downlink data
analyzer
RACH preamble
test
HS-SCCH monitor
and HSDPA
throughput
measurement
HSDPA uplink
stimulation
HSDPA
Stimulate & Check
¸CMU300 WCDMA Options
¸CMU-
B78
¸CMU-
K70
¸CMU-
K71
¸CMU-
K72
– – – – –
– – – – –
– – – – – – –
– – – – –
–
– –
– –
– –
– – – –
¸CMU-
K73
¸CMU-
K75
¸CMU-
K76
– – –
– – – –
– –
– –
¸CMU-
K77
¸CMU-
K78
– –
¸CMU-
K79
–
–
–
–
–
–
Univer sal Radio Communication Tester ¸CMU 300 23
Page 24
Certified Quality System
ISO 9001
DQS REG. NO 1954 QM
Certified Environmental System
ISO
14001
DQS REG. NO 1954 UM
For specifications, see PD 0758.0000.22
and www.rohde-schwarz.com
(search term: CMU300)
· Data w ithout toleranc e limits is not b inding · Subject to change
¸is a registered trademark of Rohde & S chwarz GmbH & Co. KG · Trade names ar e trademarks of the o wners · Printed in Ge rmany (Pe as)
PD 0758.0 000.12 · ¸CMU3 00 · Version 0 3.00 · Apr il 2006
Europe: +49 18 05 12 4242, customersuppor t@rohde -schwarz .com
www.rohde-schwarz.com
USA and Canada: 1-88 8-837- 8772, customer.suppor t@rsa.rohde-schwarz.com
Asia: +65 65 130 488, customersupport. asia@ rohde-schwarz .com
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