Rohde and Schwarz FSP3 Data Sheet

Spectrum Analyzer FSP

The new medium-class standard

Features

• 21 cm TFT colour display

• 1 Hz to 10 MHz RBW

• RMS detector for fast and re­producible measurements on
digitally modulated signals

• Measurement routines for TOI,
ACPR, OBW, amplitude statis­tics

• EMI bandwidths and quasi­peak detector

Speed

• 2.5 ms minimum sweep time in
frequency domain

• 1 µs sweep time in time domain

• Up to 30 GPIB measurements/s
in frequency domain (includ­ing trace transfer)

• Up to 70 GPIB measurements/s
in time domain (including trace
transfer)

• Fast ACP measurement routine
in time domain

Performance

• Total measurement uncertainty:

0.5 dB

• Displayed average noise level:
–155 dBm/Hz

•Phase noise:
–113 dBc/Hz at 10 kHz

•Dynamic range of
RMS detector: 100 dB

• Synthesized frequency setting

The new standard in the medium class…

Features

The new FSP Spectrum Analyzers from
Rohde & Schwarz are outstanding for
their innovative measurements and a
host of standard functions.

Instead of a wide choice of options,
FSP offers as standard all the functions
and interfaces you may expect from a
state-of-the-art spectrum analyzer:

• Largest colour display in its class

• Resolution bandwidths from 1 Hz

to 10 MHz

• Highly selective digital and FFT
filters

• Quasi-peak detector and EMI
bandwidths

• Convenient documentation of
results as a hardcopy or file in
PC-compatible formats

• Interfaces: GPIB, Centronics,
RS232, LAN (option)

• Automatic test routines for measuring
TOI, OBW, phase noise and ACP (R)

• Split screen with separate settings
and up to 3 traces per screen

• Editable limit lines including
PASS/FAIL indication

• Fast measurements in the time do­main : minimum sweep time 1 µs

• Gated sweep for measurements on
TDMA signals

• Statistical measurement functions
for determining crest factor and
CCDF (complementary cumulative
distribution function)

Featuring such a wealth of functions,
FSP offers state-of-the-art spectrum
analysis at an extremely attractive
price-performance ratio.

Speed

Time is a finite resource – so high
measurement speed is indispensable
for competitiveness and cost-effective
testing.

Here, too, the new FSP offers charac­teristics that make it top of the class:

• Up to 30 measurements/s on GPIB
interface including trace transfer of
501 binary data

• 70 measurements/s on GPIB inter­face in zero span mode including
trace transfer of 501 binary data

On top of this, FSP features as stan­dard the following unique attributes:

• RMS detector for fast and repro­ducible power measurements on
digitally modulated signals in fre­quency and time domain

2 Spectrum Analyzer FSP

Performance

• Minimum sweep time of 2.5 ms

• 1 µs time domain measurements

• Unique fast ACP mode for high-

speed ACPR measurements in time
domain using the standard-stipulat­ed test filters

With 30 measurements/s in manual
operation and digital filters with
sweep time 2.5 times faster than com­parable analog filters, FSP will also
help in your day-to-day work to
develop your product much faster.

Modern communication systems are
required to achieve optimum spectral
efficiency at high data rates. For the
3rd generation of CDMA mobile radio
systems currently under development
this is achieved, among other things,
by high-precision power control.

FSP is the ideal partner in develop­ment and production, featuring the
smallest level measurement uncer­tainty of all spectrum analyzers pres­ently on the market, as well as excel­lent RF characteristics:

• 0.5 dB total measurement uncer­tainty allows higher tolerances for
the DUT, thus increasing produc­tion yield

• 0.07 dB linearity uncertainty (1 σ)
is ideal for precise measurements,
for example of gain control and
ACPR

• RMS detector with >100 dB
dynamic range measures power
fast and accurately irrespective of
the signal shape – almost like a
thermal power sensor

• The displayed average noise level
of typ. –155 dBm (1 Hz) is at­tained without the use of preampli­fiers and thus without any reduc­tion in dynamic range

• Typ. –145 dBc (1 Hz) phase noise
at 10 MHz offset offers optimum
conditions for ACPR measure­ments on W-CDMA systems

Resolution bandwidths of up to
100 kHz are fully digital and provide
– in addition to high selectivity – an
ideal basis for accurate (adjacent-)
channel power measurements thanks
to a maximum bandwidth deviation of
3%.

…with high-end characteristics

Spectrum Analyzer FSP 3

High-end characteristics…

Rohde&Schwarz ASICs

Top-class performance as offered by
FSP essentially depends on the exten­sive use of digital signal processing
and large-scale integration of compo­nents.

For these demanding tasks, Rohde&
Schwarz has developed ASICs tai­lored to the requirements of signal
analysis. Key functions such as

• RMS detection,

• digital IF filtering,

• logarithmation,

• CCDF measurement

are "cast into silicon" and
are thus faster than
conventional solu­tions.

RMS detector of the FSP spectrum ana­lyzer measures all modern communi­cation signals with an accuracy and
speed unparalleled so far.

Logarithmic amplifier

FSP is equipped as standard with dig­ital resolution filters between 10 Hz
and 100 kHz of high selectivity and

very small band-

CCDF

The complementary cumulative distri­bution function, or briefly CCDF,
describes the probability of a signal
power exceeding a specific (usually
the average) power. CCDF analysis is
indispensable for determining the opti­mal transmitting power for CDMA sig­nals assuming that clipping over
known, short intervals is tolerable. FSP
with its dedicated CCDF measurement
routine furnishes 10
only 250 ms, thus enabling extremely
accurate statistical analysis even of

rarely occurring signal peaks.

6

single values in

This analysis

function,

which is

becoming

more and more

important, has

been realized for

the first time in

Spectrum Analyzer

FSP as a fast and cost-

effective solution based

on ASICs.

RMS detector

The RMS detector – a unique feature in
all current Rohde & Schwarz spectrum
analyzers – yields fast to stable and
reproducible results also for complex
signals such as CDMA. With a very
large number of linear single measure­ments performed, followed by power
integration, the detector avoids the
measurement error inherent in conven­tional analyzers which results from the
averaging of the log video signal. The

4 Spectrum Analyzer FSP

width
error. The filters have
an extremely small loga­rithmic level deviation of <0.2 dB
in the range 0 dB to –70 dB. They are
implemented as ASIC functions, so
their great precision is attained with­out any reduction in measurement
speed.

The platform

Fit for the future

Ergonomics & design

Excellent technical data like those of
FSP require a high-grade and service­friendly platform. All the modules are
optimally shielded and easy to
exchange, and are accommodated in
a lightweight but stable frame. A low­noise powerful fan in conjunction with
low power consumption of 70 VA to
150 VA (depending on model) makes
for high reliability.

A 2-year calibration interval (exclud­ing the reference frequency) and a
3-year warranty worldwide are
offered with the FSP.

Thanks to its modular design, FSP is
optimally equipped to cope with all
present and future tasks. The design
takes into account both hardware and
firmware extensions to safeguard your
investment far into the future. So you
can rely on your FSP to meet all
requirements also in the years to
come.

FSP sets the ergonomic standard in this
class of analyzers. The 21 cm (8.4”)
colour display is the largest and most
brilliant in its category. Vertical and
horizontal rows of softkeys allow the
convenient handling even of complex
measurement tasks. Parameters like
frequency and amplitude are entered
by means of dedicated hardkeys and
unit keys.

…through innovative solutions

Spectrum Analyzer FSP 5

Innovative solutions…

Optimum dynamic range

Featuring the lowest displayed aver­age noise level in its class
(DANL <−145 dBm at 10 Hz RBW),
FSP measures even small signals accu­rately without the use of preamplifiers
whilst maintaining the full dynamic
range. Together with the high intercept
point this yields an intermodulation­free range of typically 100 dB
– again a record in the medium class
of analyzers.

Ultralow measurement
uncertainty

In the vital frequency range below
3 GHz, FSP is outstanding for its ultra­low measurement uncertainty. The
total measurement uncertainty is less
than 0.5 dB. Due to this excellent
value, the use of power meters in rou­tine lab applications very often
becomes superfluous and DUTs may
be allowed greater tolerances.

RMS detector

The unique RMS detector used in spec­trum analyzers from Rohde & Schwarz
measures modern, noise-like communi­cation signals with best repeat accu­racy and stability.

There are neither correction factors
nor the typical errors caused by aver­aging of logarithmic trace data, so the
correct average power is displayed
with high stability for all signal types –
almost like in measurements with a
thermal power meter.

1SA
AVG

1AP
VIEW

1RM*
VIEW

2SA
AVG

Ref -110 dBm

Ref -8 dBm

-110

-115

-120

-125

-130

-135

-140

-145

-150

-155

Sweep Ctr 33

-160

0

-10

-20

-30

-40

-50

-60

-70

-80

-9

-10

-11

-12

-13

-14

-15

-16

-17

Sweep Ctr 999Sweep Ctr 999

Sweep Ctr 999Sweep Ctr 999

*

RBW 300 Hz

1 kHz

5 kHz/ Span 50 kHzCenter 100 MHz

100 ms/Center 835 MHz

500 µs/Center 835 MHz

VBW

1

RBW 3 MHz
VBW 10 MHz
SWT 1 sAtt 40 dBRef 10 dBm

RBW 3 MHz
VBW 10 MHz
SWT 5 ms

2

2

*

0dB

Att SWT 560 ms

2

Att 30 dB

1

1

Marker 1 [T1]

100.00380000 MHz

Delta 2 [T1]

-13.10000000 kHz

Delta 2 [T2]

Delta 2 [T2]

870.000000 µs

870.000000 µs

Marker 1 [T1]

Marker 1 [T1]

-10.75 dBm

-10.75 dBm

1.700000 ms

1.700000 ms

-120.74 dBm

-5.26 dB

-4.37 dB

-4.37 dB

A

SGL

PRN

A

SGL

PRN

B

SGL

6 Spectrum Analyzer FSP