The powerful broadcast signal generator for production test systems
Version
02.00
August
2008
Single-standard signal generator with ◆
realtime coding
Models for all common digital and ◆
analog broadcasting standards
Wide frequency range with very good ◆
signal quality
Integrated power amplifier for high ◆
output levels
Integrated transport stream player or ◆
audio/video generator
Model with arbitrary waveform ◆
generator
Convenient control elements and ◆
remote operation
2 ¸SFE100 Test Transmitter
Front view of the ¸SFE100
The R&S®SFE100 is a single-standard
test transmitter with realtime coding for
broadcast signals. R&S®SFE100 models
are available for all common TV standards and a number of sound broadcasting standards.
The R&S®SFE100 is a compact and reliable instrument that can be equipped
with a power amplifier unique in this
class, making it particularly valuable in
production test systems. Plus, it can be
used as a simple and economical signal
generator as well as for special applications as a second RF channel for the
R&S®SFU.
Every R&S®SFE100 model can be
equipped with the appropriate digital
or analog baseband signal source with
which test signals from Rohde & Schwarz
libraries or customer-specific test signals
can be replayed.
The R&S®SFE100 thus combines two
functions in one box, thereby significantly simplifying complex production
test systems.
The R&S®SFE100 model with an arbitrary
waveform generator enables you to generate modulation signals of any type and
to replay customer-specific waveform
files, irrespective of the available realtime coder models.
Occupying only one height unit, the
R&S®SFE100 is extremely compact.
Nevertheless, all functions can be
selected locally on the instrument.
Alternatively, the R&S®SFE100 can be
remote-operated from a PC. In this case,
operation is performed using the same
convenient graphical user interface as
for the R&S®SFE and R&S®SFU.
¸SFE100 Test Transmit ter 3
Single-standard signal
generator with realtime coding
The R&S®SFE100 is a single-standard
instrument specially designed for use
in production. Realtime coding offers a
number of advantages in this area as
well. Realtime coders generate endless
and seamless test signals. Therefore,
the signal generators do not need to be
synchronized with the production cycle.
Moreover, very long sequences can be
replayed and the modulation parameters
can be set as required.
Coder for realtime signal generation ◆
The R&S®SFE100 has a powerful
hardware platform for baseband signal processing. The platform provides
the I and Q bit streams for the broadband vector modulator. It is factoryconfigured for the specific transmission standard required
Adjustable modulation parameters ◆
With each transmission standard,
various modulation parameters such
as constellation, code rate, and FFT
mode must be defined. These parameters can be varied irrespective of the
transport stream or A/V signal to be
transmitted. All conceivable versions
of a standard can thus be tested. The
realtime coder automatically adjusts
the corresponding signaling information for the receiver
Models for all common digital
and analog broadcasting
standards
As a single-standard instrument, the
R&S®SFE100 comes with a factory installed coder. R&S®SFE100 models are
available for all major standards and
technologies. For signal generation
systems in production, this is a major
advantage: No matter whether digital or
analog receivers or terrestrial, satellite,
or cable set-top boxes are being manufactured, all test signals can be generated with the same type of test transmitter.
The R&S®SFE100 is available for the
following standards:
¸SFE100 models for satellite, terrestrial, and analog TV standards
4 ¸SFE100 Test Transmitter
Wide frequency range with very
good signal quality
The instrument‘s RF characteristics
make it clear that the R&S®SFE100 is a
high-quality signal generator despite its
compact design and economical price. It
covers the entire frequency range that is
relevant for broadcast applications, from
IF, VHF, and UHF up to the L band. And
it does so with a signal quality that is
unprecedented in this class.
Frequency range 100 kHz to 2.5 GHz ◆
The frequency can be adjusted in
steps of 1 Hz. Either the center frequency or the channel number is entered, which is especially useful in
analog TV
Low phase noise and high MER ◆
Advanced COFDM modulation
methods place high requirements
on the stability and spectral purity
of the oscillator signal. With an SSB
phase noise of <–115 dBc (typ. at
300 MHz and 20 kHz carrier offset),
very high MER values of over 40 dB
(typ.) are attained. Furthermore, the
R&S®SFE100 stands out due to its low
wideband noise and good harmonics
suppression
Constellation diagram of an ¸SFE100 DVB-T signal with excellent MER
Example of a section of the
DVB-H transport stream library
¸SFE100 Test Transmit ter 5
Integrated power amplifier for
high output levels
In production test systems, the signals of
multiple test transmitters are combined
in a coupling network and then distributed over large distances. To compensate for the accompanying losses, a high
signal level is required. The R&S®SFE100
offers an optional amplifier for this purpose which can be installed directly in
the instrument. The R&S®SFE100 thus
offers a level of performance that the
competitors cannot achieve even by
using additional external devices.
Maximum output power +27 dBm◆
The optional power amplifier of the
R&S®SFE100 provides maximum output power of 0.5 W in bands I to V
0 dB to 30 dB attenuation, adjustable◆
To adjust the levels of the test system channels, the output level can be
diminished by 0 dB to 30 dB
RF monitor output with 50 dB ◆
attenuation
With the power amplifier built in, the
RF output is located on the rear of
the R&S®SFE100, thereby simplifying rack- mounting. The receptacle on
the front panel then functions as RF
monitor output whose signal level is
50 dB less than that of the RF output
Signal level –110 dBm to +15 dBm ◆
CW without power amplifier
Without the optional power amplifier,
the R&S®SFE100 has the characteristics of a signal generator. The output level is then adjustable by means
of an electronic attenuator over a
wide dynamic range of –110 dBm to
+15 dBm in 0.1 dB steps
Rear RF output connector of the ¸SFE100 high-power amplifier
Integrated transport stream
player or audio/video generator
Digital transmission methods require
transport streams as the baseband signal; ATV modulators on the other hand
require analog CCVS signals. Every
R&S®SFE100 model can be equipped
with the baseband source that is appropriate for the individual transmission
standard – external baseband generators are no longer required. This significantly reduces the number of instruments involved, especially in complex
production test systems.
TS generator (R&S®SFE100-K20) ◆
An optional transport stream generator in the baseband internally provides test streams for the realtime
coder and allows you to generate
endless and seamless high-bit-rate
MPEG-2 transport streams. An external MPEG-2 generator is thus no
longer necessary. The SDTV transport
stream library integrated as standard
includes ATSC and DVB test streams.
The numerous Rohde & Schwarz
transport streams cover a wide variety of applications and test scenarios
Transport stream libraries from ◆
Rohde & Schwarz
A large number of additional libraries
can be integrated. They make development faster and easier and allow
new products to be tested
SDTV test streams for DVB and –
ATSC
HDTV tests of HDTV receivers –
DVB-H tests of mobile receivers –
ISDB-T test streams –
H.264 test streams –
TCM-STB tests –
The range of transport stream librar- –
ies is constantly being expanded
Compatible with the advanced stream ◆
combiner from Rohde & Schwarz
The R&S®DV-ASC advanced
stream combiner provides full flexibility when generating your own
streams, which can be used with the
R&S®SFE100-K20 TS generator. It allows you to generate your own transport streams, also for DVB-H
6 ¸SFE100 Test Transmitter
TRP player (R&S®SFE100-K22) ◆
The optional TRP player ideally
complements the TS generator and
lets you replay your own transport
streams in TRP format. The transport
streams can be copied via the USB
or LAN interface to the R&S®SFE100
file system and then replayed from
there. In addition, the TRP player
is used to replay T-DMB, DAB ETI
and MediaFloTM streams, which it
does by replaying stream files from
the libraries (R&S®SFU-K221 and
R&S®SFU-K222)
ATV video generator (R&S®SFE100-K23) ◆
By using the ATV video generator,
you can generate test patterns and
audio signals for analog TV. The
ATV video generator includes FuBK
and color bar test patterns for PAL,
SECAM, and NTSC
ATV video library from Rohde & Schwarz ◆
The ATV video library provides a
wealth of test patterns for analog
TV that far exceeds the scope of the
ATV video generator alone. It also includes Cross Hatch, Color Bar, Philips,
and Monoscope/Reteoma
Model with arbitrary waveform
generator
In addition to the realtime coder models,
Rohde & Schwarz offers an R&S®SFE100
model with an arbitrary waveform generator (ARB). It can replay proprietary I/Q
waveforms as well as waveform libraries from Rohde & Schwarz for various
transmission standards, thus opening up
a wide range of additional applications.
This allows you to generate any externally computed RF signals – from complex
modulation signals to special interferers
such as notched noise. I/Q waveform
files can be loaded into the instrument
via the USB or LAN interface.
256 Msample memory space ◆
A hardware resampler and the resulting large sequence length reduce
the memory space needed for storing
I/Q waveforms on the hard disk. This
allows you to store a large number of
I/Q waveforms directly on the hard
disk
Sample rate up to 100 Msamples/s ◆
Due to its high sample rate, the ARB
generator can generate signals with
a baseband bandwidth up to 30 MHz
Waveform libraries from ◆
Rohde & Schwarz
Additional waveform libraries permit
the quick evaluation of new modulation modes. I/Q waveform libraries are available for the following
signals:
T-DMB/DAB (R&S®SFU-K351) –
DVB-H (R&S®SFU-K352) –
DRM (R&S®SFU-K353) –
DTV interferer (R&S®SFU-K354) –
MediaFLO™ (R&S®SFU-K355) –
cable interferer (R&S®SFU-K356) –
The set of available waveform
libraries is constantly being
expanded
Compatible with R&S®WinIQSIM™ ◆
(R&S®SFE100-K350)
Waveforms generated with the
R&S®WinIQSIM™ PC software can be
loaded into the ARB generator of the
R&S®SFE100 and replayed
Generation of ARB waveforms with ¸WinIQSim™
¸SFE100 Test Transmit ter 7
Convenient control elements
and remote operation
When used in production, signal generators are usually set up in racks where
space is very limited. This means that all
functions need to be selectable directly
on the instrument. On the other hand, it
must be possible to configure and monitor all instruments of the entire system
via remote control. The R&S®SFE100
makes both possible – with a keypad
and display on the front panel on the
one hand and a convenient graphical
user interface for remote operation on
the other.
Menus on the front panel display
Keypad and liquid crystal display (LCD) ◆
on the front panel
The graphical display lets you view
the current settings quickly and easily. Parameters and their settings can
be selected with the cursor keys and
the “Enter” key
Easy software updates via USB 2.0 ◆
or LAN
Owing to USB 2.0 and LAN interfaces, you can perform software updates
for the R&S®SFE100 quickly and with
little effort. You merely need to copy
the new software to the R&S®SFE100
by means of a USB memory stick or
via FTP and start the fully automatic
installation
Remote operation with Remote ◆
Desktop or VNC
The R&S®SFE100 can be easily remote-operated via an Ethernet connection or in a LAN network over IP.
It is preconfigured for DHCP use by
means of the preinstalled Remote
Desktop software or the VNC software that comes with the instrument. For remote operation, the
R&S®SFE100 has the same highly
convenient graphical user interface
that has already proven its mettle in
the R&S®SFE and R&S®SFU
Remote operation with PC
Remote control via LAN ◆
Remote control is possible by means
of SCPI control commands via LAN
(VXI11). The R&S®SFE100 can thus be
integrated into existing test programs
very easily
Remote control commands are com-◆
patible with those of the R&S®SFU
and R&S®SFE
Combiner
·
·
·
¸SFE100
Test
station
1
Test
station
2
Test
station
3
Test
station
n
Transport stream
player
Modulator High-power
amplifier
¸SFE100
¸SFE100
¸SFE100
···
DTV
channel 1
DTV
channel 2
DTV
channel n
DTV
channel 3
Central transmitter room
Factory
RF
·
·
·
¸SFE100
Test pattern
generator
Modulator High-power
amplifier
¸SFE100
¸SFE100
¸SFE100
ATV
channel 1
ATV
channel 2
ATV
channel n
ATV
channel 3
8 ¸SFE100 Test Transmitter
Applications
In the production of consumer electronic
equipment such as set-top boxes and
televisions, a number of test signals for
various transmission stand ards are required at various frequencies and with
different contents. The required signal
generators are usually kept in a central
transmitter room. The signals are combined in a coupling network and distributed to the individual test stations
in the factory via cable, partly over considerable distances. For each channel,
a baseband signal is generated, modulated to the corresponding RF, and then
amplified to a sufficient level before being fed to the distribution network. This
task normally requires three different
instruments – baseband generator, modulator, and power amplifier.
The R&S®SFE100 is optimally designed
for this application: It combines the
baseband signal source, modulator, and
power amplifier in only one instrument.
This makes such a system far less complex.
The advantages are readily apparent: A
system with the R&S®SFE100 is not only
more economical; it also requires less
space, is more reliable, easier to maintain, and involves less spare equipment.
Schematic picture of a central transmitter room
¸SFE100 Test Transmit ter 9
Production test system
Low energy consumption reduces operating costs
Test systems in production stay in service around the
clock – seven days a week in most cases.
Benefits
Integrated instrument for efficient production ◆
The cost pressure within the fiercely competitive consumer
electronics market is enormous. The focus on material and
development costs is accompanied by the growing importance of cost-optimized production. And this is where the
advantages of the R&S®SFE100 truly become apparent:
With its integrated baseband generator and power amplifier,
the R&S®SFE100 combines three instruments in one. This
not only translates into lower procurement and operating
costs. It also increases reliability and simplifies maintenance
– which all adds up to more efficient production.
Not only are sales prices for consumer electronic equipment falling steadily – innovation cycles are also becoming ever shorter. The time window available between the
start of product development and the start of series production is becoming tighter and tighter. This makes it all
the more important to be able to transfer results from
development quickly and easily to production. The R&S®SFU,
R&S®SFE, and R&S®SFE100 broadcast signal generators from
Rohde & Schwarz provide a valuable contribution: They are
designed with optimum compatibility in mind. Test scenarios
as well as remote-control programs from development can
be transferred to production easily and smoothly.
Same look and feel as the R&S®SFU and R&S®SFE ◆
Both the tried-and-true operating concept and the straightforward graphical user interface of the R&S®SFU and
R&S®SFE are largely the same in the R&S®SFE100. Customers who are already familiar with the R&S®SFU or R&S®SFE
will be able to operate the R&S®SFE100 immediately and
without any additional training. This makes switching
between the R&S®SFU, R&S®SFE, and R&S®SFE100 easy and
effortless.
Since a test system that is based on the R&S®SFE100
can be set up with significantly less equipment, it
uses less energy. This is not only good for the environment – it also significantly reduces the system’s operating costs.