Rohde and Schwarz FSU8 Data Sheet

Spectrum Analyzer R&S FSU

The new high-end spectrum analyzer with unmatched performance

Features

Versatile resolution filters

◆ Gaussian, FFT, channel, RRC

Comprehensive test routines

◆ TOI, OBW, CCDF

◆ Channel power, ACPR

◆ ACPR in time domain

Full choice of detectors

◆ Auto Peak, Max Peak, Min Peak,

Sample, RMS, Average, Quasi Peak

Optional electronic attenuator

GSM/EDGE

Code domain power for 3GPP

Speed

◆ Fast ACP test routine in time domain

◆ User-configurable list for fast mea-

surements at frequencies of interest

◆ Up to 60 measurements/s in time

domain via IEC/IEEE bus
(including trace data transfer)

Unmatched performance

Unmatched dynamic range

◆ TOI typ. +25 dBm

◆ 1 dB compression +13 dBm

◆ Phase noise

typ. –123 dBc/Hz at 10 kHz offset
typ. –160 dBc/Hz at 10 MHz offset

◆ Excellent display linearity <0.1 dB

◆ 84 dB ACLR/3GPP with noise correc-

tion

Milestones

The name Rohde& Schwarz has been syn­onymous with innovative spectrum ana­lyzers since 1986, the unique features of
which have repeatedly set standards in
this technology. Examples are the analy­zers of the R&S FSE and R&S FSIQ fami­lies.

The Spectrum Analyzer R&S FSU is
another milestone. New circuit concepts,
advanced RF components, A/D convert­ers and ASIC technology, extensive expe­rience gained from a variety of applica­tions and customer requirements – all
this combines to form a solid basis on
which the R&S FSU was developed. Its
unparalleled features enable the use of
new test methods – to your advantage.
The future-oriented concept combines
unprecedented performance with conti­nuity. The R&S FSU is compatible with the
R&S FSE and R&S FSIQ, the industry stan­dards to date. Test routines and
sequences generated for the R&S FSE or
R&S FSIQ can be used on the R&S FSU
too. The R&S FSU family thus secures
your investment.

Rohde&Schwarz innovation
in spectrum analyzers

1986 R&S FSA – first colour display,

first spectrum analyzer to feature
–154 dBm (6 Hz) displayed aver­age noise level without the use of
preamplifiers, quasi-continuously
variable resolution bandwidths,

phase noise optimization
1995 R&S FSE – fastest analyzer
1996 R&S FSE – first spectrum ana-

lyzer with RMS detector
1997 R&S FSE-B7 – universal vector

signal analysis and spectrum

analyzer capability combined for

the first time
1998 R&S FSIQ – first analyzer offer-

ing 75 dB dynamic range for

UMTS/WCDMA ACLR measure-

ments

1999 R&S FSP – 0.5 dB total measure-

ment uncertainty as standard,
fast ACP test routines in time
domain, digital channel filters,
CCDF

2000 R&S FSP-B25 – first electronic

attenuator for wear-free use in
production

2001 R&S FSU – 0.3 dB total measure-

ment uncertainty, 50 MHz resolu­tion bandwidth, +25 dBm TOI

The operating concept of the top analyzer
R&S FSU is the same as that of the gen­eral-purpose analyzer R&S FSP, so these
instruments offer a uniform platform for a
variety of applications.

The R&S FSU family

R&S FSU3 20 Hz to 3.6 GHz

R&S FSU8 20 Hz to 8 GHz

R&S FSU26 20 Hz to 26 GHz

2 Spectrum Analyzer R&S FSU

Performance surpassing all expectations

R&S FSU – ideal for signals
requiring wide dynamic range

The R&S FSU even surpasses the proven
excellent RF data of the R&S FSE and R&S
FSIQ families. Measurements calling for
an extremely wide dynamic range
become even simpler, faster and more
reliable – in development, quality man­agement and production. The R&S FSU
can rightly be called the new reference in
spectrum analysis, with an unprece­dented dynamic range:

◆ TOI >20 dBm, typ. +25 dBm

◆ 1 dB compression

(0 dB RF attenuation): +13 dBm

◆ Displayed average noise level:

–158 dBm (1 Hz bandwidth)

◆ 77 dB ACLR typ. for 3GPP,

84 dB typ. with noise correction

◆ HSOI 55 dBm typ.

◆ Phase noise: –160 dBc/Hz typ.

at 10 MHz carrier offset

These characteristics make it easy to find
small spurious signals even in the pres­ence of strong carriers (e.g. at a base sta­tion).

For 3GPP adjacent-channel power mea­surements, a figure of 84 dB ACLR allows
good adjacent-channel power ratios to be
verified and demonstrated very simply
and with high accuracy. Build your
node B better than others, and prove it.

The high harmonic second-order intercept
point means optimum dynamic range for
multichannel cable TV measurements.

Wealth of functions

The R&S FSU is launched with the most
abundant functionality available on the
spectrum analyzer market. All major func­tions come straight away in the basic unit:

Highly selective digital filters from 10 Hz to 100 kHz
Fast FFT filters from 1 Hz to 30 kHz
Channel filters from 100 Hz to 5 MHz
RRC filters
1 Hz to 50 MHz resolution bandwidth
QP detector and EMI bandwidths 200 Hz, 9 kHz,
120 kHz

2.5 ms sweep time in frequency domain
1 µs sweep time in time domain
Number of measurement points/trace selectable
between 155 and 10001
Time-selective spectrum analysis with gating func­tion
GPIB interface, IEEE 488.2
RS-232-C serial interface, 9-pin SUB-D connector
VGA output, 15-pin SUB-D
PC-compatible screenshots on diskette or hard disk
Up to 20 measurements/s in manual mode
Up to 30 measurements/s on GPIB interface
SCPI-compatible GPIB command set
R&S FSE/R&S FSIQ-compatible GPIB command set
Fast ACP measurement in time domain
Statistical signal analysis with CCDF function
RMS detector of 100 dB dynamic range
Transducer factor for correcting antenna or cable
frequency responses
2-year calibration cycle
3-year warranty
External reference from 1 MHz to 20 MHz in 1 Hz
steps
GSM/EDGE modulation measurements (with option
R&S FS-K5)

1) Except parts subject to wear and tear (e.g. attenuators)

1)

Ready today for tomorrow

Functions like

◆ CCDF analysis

◆ Fast ACP measurement in time domain

◆ RMS detector

◆ Selection of filter characteristic

◆ Recording and readout of up to

2 x 512 ksamples of IQ data
(8 MHz RF bandwidth)

◆ High measurement accuracy

◆ Excellent display linearity

and features like 50 MHz bandwidth
mean that the R&S FSU is ready now for
tomorrow’s needs.

Spectrum Analyzer R&S FSU 3

Shorter development cycles through versatile functions …

To handle the wide variety of measure­ment tasks in product development, an
instrument must offer ample functionality
and excellent performance in all areas of
interest. The R&S FSU fully meets these
requirements.

Full choice of detectors for adaptation to a
wide range of signal types (Fig. 1):

◆ RMS

◆ Auto Peak

◆ Max Peak

◆ Min Peak

◆ Sample

◆ Average

◆ Quasi Peak

2

The most versatile resolution filter char­acteristics and largest bandwidth found
in a spectrum analyzer:

◆ Standard resolution filters from

10 Hz to 50 MHz in steps of 1, 2, 3, 5

◆ FFT filters from 1 Hz to 30 kHz

◆ 32 channel filters with bandwidth

from 100 Hz to 5 MHz

◆ RRC filters for NADC and TETRA

◆ EMI filters: 200 Hz, 9 kHz, 120 kHz

1

Full range of analysis functions:

◆ Time-domain power in conjunction

with channel or RRC filters makes the
R&S FSU a fully-fledged channel
power meter (Fig. 2)

◆ TOI marker (Fig. 3)

◆ Noise/phase-noise marker

◆ Versatile channel/adjacent-channel

power measurement functions with
wide selection of standards,
user-configurable (Fig. 4)

◆ Split-screen mode with

selectable settings

◆ CCDF measurement function (Fig. 5)

◆ Peak list marker for fast search of all

peaks within the set frequency range
(search for spurious)

3

4

4 Spectrum Analyzer R&S FSU

5

…wide dynamic range and future-proof performance

Whether in synthesizer development or
front-end design, additional applications
add to the R&S FSU functionality while
user-friendliness is maintained:

Phase Noise Measurement Software
R&S FS-K4 automates measurement
over a complete offset frequency range
and determines residual FM from the
phase noise characteristic. This in con­junction with the R&S FSU’s extremely
low phase noise generally does away
with the need for an extra phase noise
measurement system, which can be diffi­cult to operate anyway.

Noise Measurement Software

R&S FS-K3

is a convenient way to determine the noise
figure of amplifiers and frequency-con­verting UUTs throughout the R&S FSU’s
frequency range, so enabling complete
documentation. The high linearity and
extremely accurate power measurement
routines of the R&S FSU deliver precise
and reproducible results. So why bother
with a noise figure meter.

phase noise dBc/(1 Hz)

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

0.1 1 10 100 1000 10000

specification

typical

carrier offset /kHz

Phase noise
measurement
with Software
R&S FS-K4

SSB phase
noise of
R&S FSU

Noise figure
measurement
with Software
R&S FS-K3

Fast and simple analysis of anomalies: the cause
– spurious or RFI – can easily be traced with the
basic analyzer function without additional
measuring equipment

Spectrum Analyzer R&S FSU 5