Rohde&Schwarz FSP-K90 User Manual

Test and Measurement
Division

Software Manual

WLAN 802.11A TX Tests

Application Firmware R&SFSP-K90

1300.6850.02

Printed in Germany

1300.6789.42-03 1

®

is a registered trademark of Rohde & Schwarz GmbH & Co. KG.

R&S

Trade names are trademarks of the owners.

1300.6789.42 2 E-2

R&S FSP-K90 Contents

Contents

1 General Information ............................................................................................ 1.1

Introduction to R&S FSP-K90 & Wireless LAN Measurements ...................................................1.2

Installation.........................................................................................................................................1.2

Starting the application ...................................................................................................................1.4

Exiting the application .....................................................................................................................1.4

Quick Start Guide .............................................................................................................................1.5

Setting up the measurement.......................................................................................................1.5

Performing Level Detection.............................................................................................1.7

Performing the main measurement ............................................................................................1.7

Navigation .........................................................................................................................................1.8

Hotkeys .......................................................................................................................................1.8

Softkeys ....................................................................................................................................1.10

Hardkeys...................................................................................................................................1.11

External Keyboard ....................................................................................................................1.13

Mouse .......................................................................................................................................1.14

Selecting & Editing Parameters ................................................................................................1.14

Numeric Keypad ...........................................................................................................1.15

Rollkey ..........................................................................................................................1.16

Cursor Keys ..................................................................................................................1.16

Selection of a parameter within a settings view............................................................1.17

Entry of a numeric value ...............................................................................................1.19

Entry of an enumerated value.......................................................................................1.21

Entry of a checkbox ......................................................................................................1.22

Status Bar & Title Bar ...............................................................................................................1.23

Title Bar.........................................................................................................................1.23

Status Bar .....................................................................................................................1.23

Save/Recall......................................................................................................................................1.24

Printing ............................................................................................................................................1.25

2 Measurements & Settings .................................................................................. 2.1

Measurements ..................................................................................................................................2.1

IQ measurements .......................................................................................................................2.3

EVM Vs Symbol ..............................................................................................................2.4

EVM Vs Carrier ...............................................................................................................2.5

Error Vs Preamble ..........................................................................................................2.6

Constellation Vs Symbol .................................................................................................2.7

Constellation Vs Carrier ..................................................................................................2.8

Frequency sweep measurements ..............................................................................................2.9

Spectrum Emission Mask ...............................................................................................2.9

Spectrum ACPR............................................................................................................2.12

Automatic Level Detection ........................................................................................................2.13

Running measurements ................................................................................................................2.13

Measurement Results ....................................................................................................................2.14

1300.6789.42.42 3 E-3

Contents R&S FSP-K90

Results Summary .....................................................................................................................2.15

General Settings .............................................................................................................................2.16

Signal Characteristics ...............................................................................................................2.17

Standard........................................................................................................................2.17

Frequency .....................................................................................................................2.17

Channel No ...................................................................................................................2.17

Auto Level .....................................................................................................................2.17

Ext Att............................................................................................................................2.18

Signal Level (RF) ..........................................................................................................2.18

Data Capture Settings ..............................................................................................................2.18

Capture Time ................................................................................................................2.18

Overall Burst Count.......................................................................................................2.18

No of Burst to Analyze ..................................................................................................2.18

Trigger Settings ........................................................................................................................2.19

Trigger Mode.................................................................................................................2.19

Trigger Offset ................................................................................................................2.19

Power Level (RF) ..........................................................................................................2.19

Auto Power Trigger Level .............................................................................................2.19

IQ Settings ................................................................................................................................2.20

Swap IQ ........................................................................................................................2.20

Advanced Settings ....................................................................................................................2.21

Auto Level .....................................................................................................................2.21

Auto Level time .............................................................................................................2.22

Ref Level .......................................................................................................................2.22

RF Att ............................................................................................................................2.22

El Att..............................................................................................................................2.22

YIG Filter .......................................................................................................................2.23

Sample Rate .................................................................................................................2.23

High Dynamic................................................................................................................2.23

Gate Settings ............................................................................................................................2.24

Delay .............................................................................................................................2.24

Length ...........................................................................................................................2.24

Link Gate and Marker ...................................................................................................2.24

Demod Settings ..............................................................................................................................2.25

Burst To Analyze Settings ........................................................................................................2.26

Burst Type.....................................................................................................................2.26

Demodulator .................................................................................................................2.26

Equal Burst Length .......................................................................................................2.26

No of Data Symbols ......................................................................................................2.26

Min No of Data Symbols ...............................................................................................2.27

Max No of Data Symbols ..............................................................................................2.27

Chan Est in Preamb and Payl.......................................................................................2.27

Tracking Settings ......................................................................................................................2.28

Phase ............................................................................................................................2.28

Timing ...........................................................................................................................2.28

Level..............................................................................................................................2.28

Markers............................................................................................................................................2.29

Adjusting Markers .....................................................................................................................2.29

Marker Zoom.............................................................................................................................2.30

Toggle Marker Display..............................................................................................................2.30

Assigning Markers to Traces ....................................................................................................2.31

Display Settings..............................................................................................................................2.32

1300.6789.42 4 E-3

R&S FSP-K90 Contents

3 Measurements in Detail ...................................................................................... 3.1

Abbreviations....................................................................................................................................3.1

Signal Processing of the IEEE802.11a application .......................................................................3.1

4 Remote Control ................................................................................................... 4.1

escription of commands ...............................................................................................................4.1

D

Notation.......................................................................................................................................4.1

SCPI Commands...............................................................................................................................4.4

ABORt Subsystem............................................................................................................................4.4

CALCulate: Subsystem....................................................................................................................4.4

CALCulate:BURSt Subsystem....................................................................................................4.4

CALCulate:LIMit Subsystem .......................................................................................................4.5

CALCulate:MARKer Subsystem...............................................................................................4.12

CALCulate:MARKer:FUNCtion Subsystem ..............................................................................4.15

Configure Subsystem ....................................................................................................................4.17

DISPlay Subsystem ........................................................................................................................4.21

FETCh Subsystem.........................................................................................................................4.23

INPut Subsystem ............................................................................................................................4.28

INSTrument Subsystem .................................................................................................................4.30

MMEMory Subsystem ....................................................................................................................4.31

SENSe Subsystem..........................................................................................................................4.32

STATus Subsystem........................................................................................................................4.38

TRACe Subsystem .........................................................................................................................4.42

Trigger Subsystem .........................................................................................................................4.45

Unit Subsystem ..............................................................................................................................4.46

Status Reporting Registers ...........................................................................................................4.47

Description of the Status Registers ..........................................................................................4.49

5 List of Warnings & Error Messages................................................................... 5.1

6 Index..................................................................................................................... 6.1

1300.6789.42.42 5 E-3

Before putting the product into operation for

the first time, make sure to read the following

Safety Instructions

All plants and locations of the Rohde & Schwarz group of companies make every effort to keep the
safety standard of our products up to date and to offer our customers the highest possible degree of
safety. Our products and the auxiliary equipment required for them are designed and tested in
accordance with the relevant safety standards. Compliance with these standards is continuously
monitored by our quality assurance system. The product described here has been designed and tested
in accordance with the EC Certificate of Conformity and has left the manufacturer’s plant in a condition
fully complying with safety standards. To maintain this condition and to ensure safe operation, observe
all instructions and warnings provided in this manual. If you have any questions regarding these safety
instructions, the Rohde & Schwarz group of companies will be happy to answer them.

Furthermore, it is your responsibility to use the product in an appropriate manner. This product is
designed for use solely in industrial and laboratory environments or in the field and must not be used in
any way that may cause personal injury or property damage. You are responsible if the product is used
for an intention other than its designated purpose or in disregard of the manufacturer's instructions. The
manufacturer shall assume no responsibility for such use of the product.

The product is used for its designated purpose if it is used in accordance with its product documentation
and within its performance limits (see data sheet, documentation, the following safety instructions).
Using the product requires technical skills and a basic knowledge of English. It is therefore essential
that the product be used exclusively by skilled and specialized staff or thoroughly trained personnel with
the required skills. If personal safety gear is required for using Rohde & Schwarz products, this will be
indicated at the appropriate place in the product documentation.

Observe
product
documentation

Supply
voltage
ON/OFF

Weight
indication for
units >18 kg

Standby
indication

Symbols and safety labels

Danger of
electric
shock

Warning!
Hot
surface

PE terminal Ground

Direct
current
(DC)

Alternating
current (AC)

Direct/alternating
current (DC/AC)

Ground
terminal

Device fully
protected by
double/reinforced
insulation

Attention!
Electrostatic
sensitive
devices

1171.0000.42-03.00 Sheet 1

Safety Instructions

Observing the safety instructions will help prevent personal injury or damage of any kind caused by
dangerous situations. Therefore, carefully read through and adhere to the following safety instructions
before putting the product into operation. It is also absolutely essential to observe the additional safety
instructions on personal safety that appear in relevant parts of the product documentation. In these
safety instructions, the word "product" refers to all merchandise sold and distributed by the Rohde &
Schwarz group of companies, including instruments, systems and all accessories.

Tags and their meaning

DANGER

WARNING

CAUTION This tag indicates a hazard carrying a low risk of minor or moderate

ATTENTION

NOTE

These tags are in accordance with the standard definition for civil applications in the European
Economic Area. Definitions that deviate from the standard definition may also exist in other economic
areas or military applications. It is therefore essential to make sure that the tags described here are
always used only in connection with the related product documentation and the related product. The
use of tags in connection with unrelated products or documentation can result in misinterpretation and
thus contribute to personal injury or material damage.

This tag indicates a definite hazard carrying a high risk of death or
serious injury if not avoided.

This tag indicates a possible hazard carrying a medium risk of death or
(serious) injury if not avoided

injury if not avoided.

This tag indicates the possibility of incorrect use that can cause damage
to the product.

This tag indicates a situation where the user should pay special attention
to operating the product but which does not lead to damage.

.

Basic safety instructions

1. The product may be operated only under
the operating conditions and in the
positions specified by the manufacturer. Its
ventilation must not be obstructed during
operation. Unless otherwise specified, the
following requirements apply to
Rohde & Schwarz products:
prescribed operating position is always with
the housing floor facing down, IP protection
2X, pollution severity 2, overvoltage
category 2, use only in enclosed spaces,
max. operation altitude 2000 m above sea
level, max. transport altitude 4500 m above
sea level.
Unless specified otherwise in the data
sheet, a tolerance of ±10% shall apply to
the nominal voltage and of ±5% to the
nominal frequency.

2. Applicable local or national safety
regulations and rules for the prevention of
accidents must be observed in all work
performed. The product may be opened
only by authorized, specially trained
personnel. Prior to performing any work on

the product or opening the product, the
product must be disconnected from the
supply network. Any adjustments,
replacements of parts, maintenance or
repair must be carried out only by technical
personnel authorized by Rohde & Schwarz.
Only original parts may be used for
replacing parts relevant to safety (e.g.
power switches, power transformers,
fuses). A safety test must always be
performed after parts relevant to safety
have been replaced (visual inspection, PE
conductor test, insulation resistance
measurement, leakage current
measurement, functional test).

3. As with all industrially manufactured goods,
the use of substances that induce an
allergic reaction (allergens, e.g. nickel)
such as aluminum cannot be generally
excluded. If you develop an allergic
reaction (such as a skin rash, frequent
sneezing, red eyes or respiratory
difficulties), consult a physician immediately
to determine the cause.

1171.0000.42-03.00 Sheet 2

Safety Instructions

4. If products/components are mechanically
and/or thermically processed in a manner
that goes beyond their intended use,
hazardous substances (heavy-metal dust
such as lead, beryllium, nickel) may be
released. For this reason, the product may
only be disassembled, e.g. for disposal
purposes, by specially trained personnel.
Improper disassembly may be hazardous to
your health. National waste disposal
regulations must be observed.

5. If handling the product yields hazardous
substances or fuels that must be disposed
of in a special way, e.g. coolants or engine
oils that must be replenished regularly, the
safety instructions of the manufacturer of
the hazardous substances or fuels and the
applicable regional waste disposal
regulations must be observed. Also
observe the relevant safety instructions in
the product documentation.

6. Depending on the function, certain products
such as RF radio equipment can produce
an elevated level of electromagnetic
radiation. Considering that unborn life
requires increased protection, pregnant
women should be protected by appropriate
measures. Persons with pacemakers may
also be endangered by electromagnetic
radiation. The employer/operator is
required to assess workplaces where there
is a special risk of exposure to radiation
and, if necessary, take measures to avert
the danger.

7. Operating the products requires special
training and intense concentration. Make
certain that persons who use the products
are physically, mentally and emotionally fit
enough to handle operating the products;
otherwise injuries or material damage may
occur. It is the responsibility of the
employer to select suitable personnel for
operating the products.

8. Prior to switching on the product, it must be
ensured that the nominal voltage setting on
the product matches the nominal voltage of
the AC supply network. If a different voltage
is to be set, the power fuse of the product
may have to be changed accordingly.

9. In the case of products of safety class I with
movable power cord and connector,
operation is permitted only on sockets with
earthing contact and protective earth
connection.

10. Intentionally breaking the protective earth
connection either in the feed line or in the

product itself is not permitted. Doing so can
result in the danger of an electric shock
from the product. If extension cords or
connector strips are implemented, they
must be checked on a regular basis to
ensure that they are safe to use.

11. If the product has no power switch for
disconnection from the AC supply, the plug
of the connecting cable is regarded as the
disconnecting device. In such cases, it
must be ensured that the power plug is
easily reachable and accessible at all times
(corresponding to the length of connecting
cable, approx. 2 m). Functional or
electronic switches are not suitable for
providing disconnection from the AC
supply. If products without power switches
are integrated in racks or systems, a
disconnecting device must be provided at
the system level.

12. Never use the product if the power cable is
damaged. Check the power cable on a
regular basis to ensure that it is in proper
operating condition. By taking appropriate
safety measures and carefully laying the
power cable, ensure that the cable cannot
be damaged and that no one can be hurt by
e.g. tripping over the cable or suffering an
electric shock.

13. The product may be operated only from
TN/TT supply networks fused with max.
16 A (higher fuse only after consulting with
the Rohde & Schwarz group of companies).

14. Do not insert the plug into sockets that are
dusty or dirty. Insert the plug firmly and all
the way into the socket. Otherwise, this can
result in sparks, fire and/or injuries.

15. Do not overload any sockets, extension
cords or connector strips; doing so can
cause fire or electric shocks.

16. For measurements in circuits with voltages
V

> 30 V, suitable measures (e.g.

rms

appropriate measuring equipment, fusing,
current limiting, electrical separation,
insulation) should be taken to avoid any
hazards.

17. Ensure that the connections with
information technology equipment comply
with IEC 950/EN 60950.

18. Unless expressly permitted, never remove
the cover or any part of the housing while
the product is in operation. Doing so will
expose circuits and components and can
lead to injuries, fire or damage to the
product.

1171.0000.42-03.00 Sheet 3

Safety Instructions

19. If a product is to be permanently installed,
the connection between the PE terminal on
site and the product's PE conductor must
be made first before any other connection
is made. The product may be installed and
connected only by a license electrician.

20. For permanently installed equipment
without built-in fuses, circuit breakers or
similar protective devices, the supply circuit
must be fused in such a way that suitable
protection is provided for users and
products.

21. Do not insert any objects into the openings
in the housing that are not designed for this
purpose. Never pour any liquids onto or into
the housing. This can cause short circuits
inside the product and/or electric shocks,
fire or injuries.

22. Use suitable overvoltage protection to
ensure that no overvoltage (such as that
caused by a thunderstorm) can reach the
product. Otherwise the operating personnel
will be endangered by electric shocks.

23. Rohde & Schwarz products are not
protected against penetration of water,
unless otherwise specified (see also safety
instruction 1.). If this is not taken into
account, there exists the danger of electric
shock for the user or damage to the
product, which can also lead to personal
injury.

24. Never use the product under conditions in
which condensation has formed or can form
in or on the product, e.g. if the product was
moved from a cold to a warm environment.

25. Do not close any slots or openings on the
product, since they are necessary for
ventilation and prevent the product from
overheating. Do not place the product on
soft surfaces such as sofas or rugs or
inside a closed housing, unless this is well
ventilated.

26. Do not place the product on heat­generating devices such as radiators or fan
heaters. The temperature of the
environment must not exceed the maximum
temperature specified in the data sheet.

27. Batteries and storage batteries must not be
exposed to high temperatures or fire. Keep
batteries and storage batteries away from
children. Do not short-circuit batteries and
storage batteries.
If batteries or storage batteries are
improperly replaced, this can cause an
explosion (warning: lithium cells). Replace

the battery or storage battery only with the
matching Rohde & Schwarz type (see
spare parts list). Batteries and storage
batteries must be recycled and kept
separate from residual waste. Batteries and
storage batteries that contain lead, mercury
or cadmium are hazardous waste. Observe
the national regulations regarding waste
disposal and recycling.

28. Please be aware that in the event of a fire,
toxic substances (gases, liquids etc.) that
may be hazardous to your health may
escape from the product.

29. The product can be very heavy. Be careful
when moving it to avoid back or other
physical injuries.

30. Do not place the product on surfaces,
vehicles, cabinets or tables that for reasons
of weight or stability are unsuitable for this
purpose. Always follow the manufacturer's
installation instructions when installing the
product and fastening it to objects or
structures (e.g. walls and shelves).

31. Handles on the products are designed
exclusively for personnel to hold or carry
the product. It is therefore not permissible
to use handles for fastening the product to
or on means of transport such as cranes,
fork lifts, wagons, etc. The user is
responsible for securely fastening the
products to or on the means of transport
and for observing the safety regulations of
the manufacturer of the means of transport.
Noncompliance can result in personal injury
or material damage.

32. If you use the product in a vehicle, it is the
sole responsibility of the driver to drive the
vehicle safely. Adequately secure the
product in the vehicle to prevent injuries or
other damage in the event of an accident.
Never use the product in a moving vehicle if
doing so could distract the driver of the
vehicle. The driver is always responsible for
the safety of the vehicle. The manufacturer
assumes no responsibility for accidents or
collisions.

33. If a laser product (e.g. a CD/DVD drive) is
integrated in a Rohde & Schwarz product,
do not use any other settings or functions
than those described in the product
documentation. Otherwise this may be
hazardous to your health, since the laser
beam can cause irreversible damage to
your eyes. Never try to take such products
apart, and never look into the laser beam.

1171.0000.42-03.00 Sheet 4

Informaciones de seguridad

Por favor lea imprescindiblemente antes de
la primera puesta en funcionamiento las
siguientes

Informaciones de seguridad

El principio del grupo de empresas Rohde & Schwarz consiste en tener nuestros productos siempre al
día con los estandards de seguridad y de ofrecer a nuestros clientes el máximo grado de seguridad.
Nuestros productos y todos los equipos adicionales son siempre fabricados y examinados según las
normas de seguridad vigentes. Nuestra sección de gestión de la seguridad de calidad controla
constantemente que sean cumplidas estas normas. El presente producto ha sido fabricado y
examinado según el comprobante de conformidad adjunto según las normas de la CE y ha salido de
nuestra planta en estado impecable según los estandards técnicos de seguridad. Para poder preservar
este estado y garantizar un funcionamiento libre de peligros, el usuario deberá atenerse a todas las
informaciones, informaciones de seguridad y notas de alerta. El grupo de empresas Rohde & Schwarz
está siempre a su disposición en caso de que tengan preguntas referentes a estas informaciones de
seguridad.

Además queda en la responsabilidad del usuario utilizar el producto en la forma debida. Este producto
solamente fue elaborado para ser utilizado en la industria y el laboratorio o para fines de campo y de
ninguna manera deberá ser utilizado de modo que alguna persona/cosa pueda ser dañada. El uso del
producto fuera de sus fines definidos o despreciando las informaciones de seguridad del fabricante
queda en la responsabilidad del usuario. El fabricante no se hace en ninguna forma responsable de
consecuencias a causa del mal uso del producto.

Se parte del uso correcto del producto para los fines definidos si el producto es utilizado dentro de las
instrucciones de la correspondiente documentación de producto y dentro del margen de rendimiento
definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso del
producto hace necesarios conocimientos profundos y conocimientos parciales del idioma inglés. Por
eso se deberá tener en cuenta de exclusivamente autorizar para el uso del producto a personas peritas
o debidamente minuciosamente instruidas con los conocimientos citados. Si fuera necesaria
indumentaria de seguridad para el uso de productos de R&S, encontrará la información debida en la
documentación del producto en el capítulo correspondiente.

Símbolos y definiciones de seguridad

Ver
documen­tación de
producto

Informaciones
para
maquinaria
con uns peso
de > 18kg

Peligro de
golpe de
corriente

¡Advertencia!
Superficie
caliente

Conexión a
conductor
protector

Conexión
a tierra

Conexión
a masa
conductora

¡Cuidado!
Elementos de
construcción
con peligro de
carga
electroestática

El aparato está
protegido en su
totalidad por un
aislamiento de
doble refuerzo

potencia EN
MARCHA/PARADA

Indicación
Stand-by

Corriente
continua
DC

Corriente
alterna AC

Corriente
continua/alterna
DC/AC

1171.0000.42-03.00 Sheet 5

Informaciones de seguridad

Tener en cuenta las informaciones de seguridad sirve para tratar de evitar daños y peligros de toda
clase. Es necesario de que se lean las siguientes informaciones de seguridad concienzudamente y se
tengan en cuenta debidamente antes de la puesta en funcionamiento del producto. También deberán
ser tenidas en cuenta las informaciones para la protección de personas que encontrarán en el capítulo
correspondiente de la documentación de producto y que también son obligatorias de seguir. En las
informaciones de seguridad actuales hemos juntado todos los objetos vendidos por el grupo de
empresas Rohde & Schwarz bajo la denominación de „producto“, entre ellos también aparatos,
instalaciones así como toda clase de accesorios.

Palabras de señal y su significado

PELIGRO Identifica un peligro directo con riesgo elevado de provocar muerte o

lesiones de gravedad si no se toman las medidas oportunas.

ADVERTENCIA Identifica un posible peligro con riesgo medio de provocar muerte o

lesiones (de gravedad) si no se toman las medidas oportunas.

ATENCIÓN Identifica un peligro con riesgo reducido de provocar lesiones de

gravedad media o leve si no se toman las medidas oportunas.

CUIDADO Indica la posibilidad de utilizar mal el producto y a consecuencia

dañarlo.

INFORMACIÓN Indica una situación en la que deberían seguirse las instrucciones en el

uso del producto, pero que no consecuentemente deben de llevar a un
daño del mismo.

Las palabras de señal corresponden a la definición habitual para aplicaciones civiles en el área
económica europea. Pueden existir definiciones diferentes a esta definición en otras áreas económicas
o en aplicaciones militares. Por eso se deberá tener en cuenta que las palabras de señal aquí descritas
sean utilizadas siempre solamente en combinación con la correspondiente documentación de producto
y solamente en combinación con el producto correspondiente. La utilización de las palabras de señal
en combinación con productos o documentaciones que no les correspondan puede llevar a
malinterpretaciones y tener por consecuencia daños en personas u objetos.

Informaciones de seguridad elementales

1. El producto solamente debe ser utilizado
según lo indicado por el fabricante referente
a la situación y posición de funcionamiento
sin que se obstruya la ventilación. Si no se
convino de otra manera, es para los
productos R&S válido lo que sigue:
como posición de funcionamiento se define
principialmente la posición con el suelo de la
caja para abajo , modo de protección IP 2X,
grado de suciedad 2, categoría de
sobrecarga eléctrica 2, utilizar solamente en
estancias interiores, utilización hasta 2000 m
sobre el nivel del mar, transporte hasta

4.500 m sobre el nivel del mar.
A menos que se especifique otra cosa en la
hoja de datos, se aplicará una tolerancia de
±10% sobre el voltaje nominal y de ±5%
sobre la frecuencia nominal.

2. En todos los trabajos deberán ser tenidas en
cuenta las normas locales de seguridad de

trabajo y de prevención de accidentes. El
producto solamente debe de ser abierto por
personal perito autorizado. Antes de efectuar
trabajos en el producto o abrirlo deberá este
ser desconectado de la corriente. El ajuste,
el cambio de partes, la manutención y la
reparación deberán ser solamente
efectuadas por electricistas autorizados por
R&S. Si se reponen partes con importancia
para los aspectos de seguridad (por ejemplo
el enchufe, los transformadores o los
fusibles), solamente podrán ser sustituidos
por partes originales. Despues de cada
recambio de partes elementales para la
seguridad deberá ser efectuado un control de
seguridad (control a primera vista, control de
conductor protector, medición de resistencia
de aislamiento, medición de medición de la
corriente conductora, control de
funcionamiento).

1171.0000.42-03.00 Sheet 6

Informaciones de seguridad

3. Como en todo producto de fabricación
industrial no puede ser excluido en general
de que se produzcan al usarlo elementos
que puedan generar alergias, los llamados
elementos alergénicos (por ejemplo el
níquel). Si se producieran en el trato con
productos R&S reacciones alérgicas, como
por ejemplo urticaria, estornudos frecuentes,
irritación de la conjuntiva o dificultades al
respirar, se deberá consultar inmediatamente
a un médico para averigurar los motivos de
estas reacciones.

4. Si productos / elementos de construcción son
tratados fuera del funcionamiento definido de
forma mecánica o térmica, pueden generarse
elementos peligrosos (polvos de sustancia
de metales pesados como por ejemplo
plomo, berilio, níquel). La partición elemental
del producto, como por ejemplo sucede en el
tratamiento de materias residuales, debe de
ser efectuada solamente por personal
especializado para estos tratamientos. La
partición elemental efectuada
inadecuadamente puede generar daños para
la salud. Se deben tener en cuenta las
directivas nacionales referentes al
tratamiento de materias residuales.

5. En el caso de que se produjeran agentes de
peligro o combustibles en la aplicación del
producto que debieran de ser transferidos a
un tratamiento de materias residuales, como
por ejemplo agentes refrigerantes que deben
ser repuestos en periodos definidos, o
aceites para motores, deberan ser tenidas en
cuenta las prescripciones de seguridad del
fabricante de estos agentes de peligro o
combustibles y las regulaciones regionales
para el tratamiento de materias residuales.
Cuiden también de tener en cuenta en caso
dado las prescripciones de seguridad
especiales en la descripción del producto.

6. Ciertos productos, como por ejemplo las
instalaciones de radiación HF, pueden a
causa de su función natural, emitir una
radiación electromagnética aumentada. En
vista a la protección de la vida en desarrollo
deberían ser protegidas personas
embarazadas debidamente. También las
personas con un bypass pueden correr
peligro a causa de la radiación
electromagnética. El empresario/usario está

comprometido a valorar y señalar areas de
trabajo en las que se corra un riesgo
aumentado de exposición a radiaciones para
evitar riesgos.

7. La utilización de los productos requiere
instrucciones especiales y una alta
concentración en el manejo. Debe de
ponerse por seguro de que las personas que
manejen los productos estén a la altura de
los requerimientos necesarios referente a
sus aptitudes físicas, psíquicas y
emocionales, ya que de otra manera no se
pueden excluir lesiones o daños de objetos.
El empresario lleva la responsabilidad de
seleccionar el personal usuario apto para el
manejo de los productos.

8. Antes de la puesta en marcha del producto
se deberá tener por seguro de que la tensión
preseleccionada en el producto equivalga a
la del la red de distribución. Si es necesario
cambiar la preselección de la tensión
también se deberán en caso dabo cambiar
los fusibles correspondientes del prodcuto.

9. Productos de la clase de seguridad I con
alimentación móvil y enchufe individual de
producto solamente deberán ser conectados
para el funcionamiento a tomas de corriente
de contacto de seguridad y con conductor
protector conectado.

10. Queda prohibida toda clase de interrupción
intencionada del conductor protector, tanto
en la toma de corriente como en el mismo
producto. Puede tener como consecuencia el
peligro de golpe de corriente por el producto.
Si se utilizaran cables o enchufes de
extensión se deberá poner al seguro, que es
controlado su estado técnico de seguridad.

11. Si el producto no está equipado con un
interruptor para desconectarlo de la red, se
deberá considerar el enchufe del cable de
distribución como interruptor. En estos casos
deberá asegurar de que el enchufe sea de
fácil acceso y nabejo (según la medida del
cable de distribución, aproximadamente
2 m). Los interruptores de función o
electrónicos no son aptos para el corte de la
red eléctrica. Si los productos sin interruptor
están integrados en construciones o
instalaciones, se deberá instalar el interruptor
al nivel de la instalación.

1171.0000.42-03.00 Sheet 7

Informaciones de seguridad

12. No utilice nunca el producto si está dañado el
cable eléctrico. Compruebe regularmente el
correcto estado de los cables de conexión a
red. Asegure a través de las medidas de
protección y de instalación adecuadas de
que el cable de eléctrico no pueda ser
dañado o de que nadie pueda ser dañado
por él, por ejemplo al tropezar o por un golpe
de corriente.

13. Solamente está permitido el funcionamiento
en redes de distribución TN/TT aseguradas
con fusibles de como máximo 16 A
(utilización de fusibles de mayor amperaje
sólo previa consulta con el grupo de
empresas Rohde & Schwarz).

14. Nunca conecte el enchufe en tomas de
corriente sucias o llenas de polvo. Introduzca
el enchufe por completo y fuertemente en la
toma de corriente. Si no tiene en
consideración estas indicaciones se arriesga
a que se originen chispas, fuego y/o heridas.

15. No sobrecargue las tomas de corriente, los
cables de extensión o los enchufes de
extensión ya que esto pudiera causar fuego
o golpes de corriente.

16. En las mediciones en circuitos de corriente
con una tensión de entrada de U

> 30 V se

eff

deberá tomar las precauciones debidas para
impedir cualquier peligro (por ejemplo
medios de medición adecuados, seguros,
limitación de tensión, corte protector,
aislamiento etc.).

17. En caso de conexión con aparatos de la
técnica informática se deberá tener en
cuenta que estos cumplan los requisitos de
la EC950/EN60950.

18. A menos que esté permitido expresamente,
no retire nunca la tapa ni componentes de la
carcasa mientras el producto esté en
servicio. Esto pone a descubierto los cables
y componentes eléctricos y puede causar
heridas, fuego o daños en el producto.

19. Si un producto es instalado fijamente en un
lugar, se deberá primero conectar el
conductor protector fijo con el conductor
protector del aparato antes de hacer
cualquier otra conexión. La instalación y la
conexión deberán ser efecutadas por un
electricista especializado.

20. En caso de que los productos que son
instalados fijamente en un lugar sean sin
protector implementado, autointerruptor o
similares objetos de protección, el circuito de
suministro de corriente deberá estar
protegido de manera que usuarios y
productos estén suficientemente protegidos.

21. Por favor, no introduzca ningún objeto que
no esté destinado a ello en los orificios de la
caja del aparato. No vierta nunca ninguna
clase de líquidos sobre o en la caja. Esto
puede producir corto circuitos en el producto
y/o puede causar golpes de corriente, fuego
o heridas.

22. Asegúrese con la protección adecuada de
que no pueda originarse en el producto una
sobrecarga por ejemplo a causa de una
tormenta. Si no se verá el personal que lo
utilice expuesto al peligro de un golpe de
corriente.

23. Los productos R&S no están protegidos
contra el agua si no es que exista otra
indicación, ver también punto 1. Si no se
tiene en cuenta esto se arriesga el peligro de
golpe de corriente para el usario o de daños
en el producto lo cual también puede llevar al
peligro de personas.

24. No utilice el producto bajo condiciones en las
que pueda producirse y se hayan producido
líquidos de condensación en o dentro del
producto como por ejemplo cuando se
desplaza el producto de un lugar frío a un
lugar caliente.

25. Por favor no cierre ninguna ranura u orificio
del producto, ya que estas son necesarias
para la ventilación e impiden que el producto
se caliente demasiado. No pongan el
producto encima de materiales blandos como
por ejemplo sofás o alfombras o dentro de
una caja cerrada, si esta no está
suficientemente ventilada.

26. No ponga el producto sobre aparatos que
produzcan calor, como por ejemplo
radiadores o calentadores. La temperatura
ambiental no debe superar la temperatura
máxima especificada en la hoja de datos.

1171.0000.42-03.00 Sheet 8

Informaciones de seguridad

27. Baterías y acumuladores no deben de ser
expuestos a temperaturas altas o al fuego.
Guardar baterías y acumuladores fuera del
alcance de los niños. No cortocircuitar
baterías ni acumuladores. Si las baterías o
los acumuladores no son cambiados con la
debida atención existirá peligro de explosión
(atención celulas de Litio). Cambiar las
baterías o los acumuladores solamente por
los del tipo R&S correspondiente (ver lista de
piezas de recambio). Las baterías y
acumuladores deben reutilizarse y no deben
acceder a los vertederos. Las baterías y
acumuladores que contienen plomo,
mercurio o cadmio deben tratarse como
residuos especiales. Respete en esta
relación las normas nacionales de
evacuación y reciclaje.

28. Por favor tengan en cuenta que en caso de
un incendio pueden desprenderse del
producto agentes venenosos (gases, líquidos
etc.) que pueden generar daños a la salud.

29. El producto puede poseer un peso elevado.
Muévalo con cuidado para evitar lesiones en
la espalda u otras partes corporales.

30. No sitúe el producto encima de superficies,
vehículos, estantes o mesas, que por sus
características de peso o de estabilidad no
sean aptas para él. Siga siempre las
instrucciones de instalación del fabricante
cuando instale y asegure el producto en
objetos o estructuras (por ejemplo paredes y
estantes).

31. Las asas instaladas en los productos sirven
solamente de ayuda para el manejo que
solamente está previsto para personas. Por
eso no está permitido utilizar las asas para la
sujeción en o sobre medios de transporte
como por ejemplo grúas, carretillas
elevadoras de horquilla, carros etc. El
usuario es responsable de que los productos
sean sujetados de forma segura a los medios
de transporte y de que las prescripciones de
seguridad del fabricante de los medios de
transporte sean tenidas en cuenta. En caso
de que no se tengan en cuenta pueden
causarse daños en personas y objetos.

32. Si llega a utilizar el producto dentro de un
vehículo, queda en la responsabilidad
absoluta del conductor que conducir el
vehículo de manera segura. Asegure el
producto dentro del vehículo debidamente
para evitar en caso de un accidente las
lesiones u otra clase de daños. No utilice
nunca el producto dentro de un vehículo en
movimiento si esto pudiera distraer al
conductor. Siempre queda en la
responsabilidad absoluta del conductor la
seguridad del vehículo. El fabricante no
asumirá ninguna clase de responsabilidad
por accidentes o colisiones.

33. Dado el caso de que esté integrado un
producto de laser en un producto R&S (por
ejemplo CD/DVD-ROM) no utilice otras
instalaciones o funciones que las descritas
en la documentación de producto. De otra
manera pondrá en peligro su salud, ya que el
rayo laser puede dañar irreversiblemente sus
ojos. Nunca trate de descomponer estos
productos. Nunca mire dentro del rayo laser.

1171.0000.42-03.00 Sheet 9

Certified Quality System

DIN EN ISO 9001 : 2000
DIN EN 9100 : 2003
DIN EN ISO 14001 : 2004

DQS REG. NO 001954 QM UM

QUALITÄTSZERTIFIKAT CERTIFICATE OF QUALITY CERTIFICAT DE QUALITÉ

Sehr geehrter Kunde,

Sie haben sich für den Kauf eines
Rohde& Schwarz-Produktes entschie­den. Hiermit erhalten Sie ein nach
modernsten Fertigungsmethoden
hergestelltes Produkt. Es wurde nach
den Regeln unseres Management­systems entwickelt, gefertigt und
geprüft.
Das Rohde& Schwarz Management­system ist zertifiziert nach:

DIN EN ISO 9001:2000
DIN EN 9100:2003
DIN EN ISO 14001:2004

Dear Customer,

you have decided to buy a Rohde&
Schwarz product. You are thus as­sured of receiving a product that is
manufactured using the most modern
methods available. This product was
developed, manufactured and tested
in compliance with our quality manage­ment system standards.
The Rohde& Schwarz quality manage­ment system is certified according to:

DIN EN ISO 9001:2000
DIN EN 9100:2003
DIN EN ISO 14001:2004

Cher Client,

vous avez choisi d‘acheter un produit
Rohde& Schwarz. Vous disposez
donc d‘un produit fabriqué d‘après
les méthodes les plus avancées. Le
développement, la fabrication et les
tests respectent nos normes de ges­tion qualité.
Le système de gestion qualité de
Rohde& Schwarz a été homologué
conformément aux normes:

DIN EN ISO 9001:2000
DIN EN 9100:2003
DIN EN ISO 14001:2004

1171.0200.11-02.00

Customer Support

Technical support – where and when you need it

For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer
Support Centers. A team of highly qualified engineers provides telephone support and will
work with you to find a solution to your query on any aspect of the operation, programming
or applications of Rohde & Schwarz equipment.

Up-to-date information and upgrades

To keep your Rohde & Schwarz equipment always up-to-date,
please subscribe to our electronic newsletter at

http://www.rohde-schwarz.com/www/response.nsf/newsletterpreselection

or request the desired information and upgrades via email from your Customer Support
Center (addresses see below).

Feedback

We want to know if we are meeting your support needs. If you have any comments please
email us and let us know [e-mail].

USA & Canada

East Asia

Rest of the World

Monday to Friday (except US public holidays)
8:00 AM – 8:00 PM Eastern Standard Time (EST)

Tel. from USA 888-test-rsa (888-837-8772) (opt 2)
From outside USA [phone] (opt 2)
Fax [phone]

E-mail [e-mail]

Monday to Friday (except Singaporean public holidays)
8:30 AM – 6:00 PM Singapore Time (SGT)

Tel. [phone]
Fax [phone]

E-mail [e-mail]

Monday to Friday (except German public holidays)
08:00 – 17:00

Tel. from Europe [phone]
From outside Europe [phone]
Fax [phone]

Central European Time (CET)

1171.0200.29-01.00

E-mail [e-mail]

12

Address List

Headquarters, Plants and Subsidiaries

Headquarters

ROHDE& SCHWARZ GmbH & Co. KG
Mühldorfstraße 15 · D-81671 München
P.O.Box 80 14 69 · D-81614 München

Plants

ROHDE& SCHWARZ Messgerätebau GmbH
Riedbachstraße 58 · D-87700 Memmingen
P.O.Box 16 52 · D-87686 Memmingen

ROHDE& SCHWARZ GmbH & Co. KG
Werk Teisnach
Kaikenrieder Straße 27 · D-94244 Teisnach
P.O.Box 11 49 · D-94240 Teisnach

ROHDE& SCHWARZ závod
Vimperk, s.r.o.
Location Spidrova 49
CZ-38501 Vimperk

ROHDE& SCHWARZ GmbH & Co. KG
Dienstleistungszentrum Köln
Graf-Zeppelin-Straße 18 · D-51147 Köln
P.O.Box 98 02 60 · D-51130 Köln

Subsidiaries

R&S BICK Mobilfunk GmbH
Fritz-Hahne-Str. 7 · D-31848 Bad Münder
P.O.Box 20 02 · D-31844 Bad Münder

ROHDE& SCHWARZ FTK GmbH
Wendenschloßstraße 168, Haus 28
D-12557 Berlin

ROHDE& SCHWARZ SIT GmbH
Am Studio 3
D-12489 Berlin

R&S Systems GmbH
Graf-Zeppelin-Straße 18
D-51147 Köln

GEDIS GmbH
Sophienblatt 100
D-24114 Kiel

HAMEG Instruments GmbH
Industriestraße 6
D-63533 Mainhausen

Fax [phone]

[e-mail]

Phone [phone]

[e-mail]

Phone [phone]

[e-mail]

Phone [phone]

Fax [phone]

[e-mail]

[e-mail]

Phone [phone]

[e-mail]

Phone [phone]

[e-mail]

[e-mail]

Phone [phone]

Fax [phone]

[e-mail]

Phone [phone]

Phone [phone]

[phone]

Fax [phone]

Fax [phone]

Phone [phone]

Fax [phone]

Fax [phone]

Phone [phone]

Fax [phone]

Fax [phone]

[e-mail]

Phone [phone]

Fax [phone]

[e-mail]

Locations Worldwide

Please refer to our homepage: www.rohde-schwarz.com

◆ Sales Locations

◆ Service Locations

◆ National Websites

12

1171.0200.42-02.00

R&S FSP-K90 General Information

1 General Information

The Rohde & Schwarz R&S FSP-K90 application extends the functionality of the R&S FSP spectrum
analyzer to enable Wireless LAN TX-measurements according to IEEE standard 802.11a.

This manual supports the user in working with R&S FSP-K90. It aids the preparation, execution and
evaluation of a measurement and gives many helpful hints and examples.

For the user wanting to make a quick start to using R&S FSP-K90, the Quick Start Guide section below
works step-by-step through an ordinary measurement. The remainder of this section describes all of the
basic information about how the R&S FSP-K90 application works, without covering measurements in
detail. A detailed description of all measurement modes, settings and results can be found in section 2.
Section 4 covers remote control operation of R&S FSP-K90.

This section covers the following subjects:

Introduction to R&S FSP-K90 & Wireless LAN measurements

• Installation

• Starting the application

• Exiting the application

• Quick start guide – allows the user to get up-and-running in minimum time

• Navigation

• Save/recall – saving & recalling user settings & measurement results

• Printing

1300.6789.42 1.1 E-3

General Information R&S FSP-K90

Introduction to R&S FSP-K90 & Wireless LAN Measurements

The use of an R&S FSP spectrum analyzer with its high sensitivity enables the accurate and
reproducible TX-measurement of wireless LAN Device Under Test (DUT) according to the standards
specified for the device:

• Modulation formats:

- BPSK

- QPSK

- 16QAM

- 64QAM

• Modulation measurements:

- Constellation diagram

- Constellation diagram per OFDM carrier

- I/Q offset and I/Q imbalance

- Carrier and symbol frequency errors

- Modulation error (EVM) per OFDM carrier or symbol

- Amplitude response and group-delay distortion (spectral flatness)

• Transmit spectrum mask

• Capture time selectable up to 4.06 ms, multiple sweeps possible for large number of bursts

Installation

 From the analyzer select firmware update. Press the SETUP hardkey followed by NEXT,

FIRMWARE UPDATE and finally the FIRMWARE UPDATE softkey. Following the instructions

displayed.

Once the installation has completed the analyzer will reboot.

Once the option has been installed it needs to be activated:

 Start up the analyzer.

 Press the SETUP hardkey, followed by the GENERAL SETUP softkey and then the OPTIONS

softkey. A list of the options currently activated is displayed.

 Press the INSTALL OPTION softkey. A Dialog is displayed allowing the option key to be entered.

1300.6789.42 1.2 E-3

R&S FSP-K90 General Information

 Enter the option key supplied with the R&S FSP-K90 software.

 When a valid option key has been supplied a dialog will be displayed explaining that a reboot is

required to complete this operation. Select OK in this dialog and the instrument will be rebooted

 When the analyzer starts after the reboot a new hotkey will be displayed at the bottom of the display

labelled WLAN. In addition an entry for the R&S FSP-K90 option will be displayed in the FIRMWARE
OPTIONS dialog.

1300.6789.42 1.3 E-3

General Information R&S FSP-K90

Starting the application

Power up the R&S FSP spectrum analyzer. When R&S FSP-K90 is correctly installed there will be a
hotkey labelled WLAN at the bottom of the screen. Press the WLAN hotkey to start R&S FSP-K90.

Note that if the spectrum analyzer is powered down whilst R&S FSP-K90 is active, then when the
spectrum analyzer is powered up again it will start up in the R&S FSP-K90 application.

Exiting the application

To exit the R&S FSP-K90 option, press the SPECTRUM hotkey at the bottom of the screen. This will
cause the option to exit and the spectrum analyzer to be activated with the same settings as were set
when the R&S FSP-K90 option was activated.

1300.6789.42 1.4 E-3

R&S FSP-K90 General Information

Quick Start Guide

This section helps the user to quickly become familiar with R&S FSP-K90 by working step-by-step
through an ordinary measurement. (Refer to section 2 for a detailed reference guide.)

or this example a DUT using IEEE 802.11a will be used. The DUT will be connected to the analyzer

F
using the RF input of the analyzer. The DUT will generate a signal modulated using 16QAM

Setting up the measurement

 Start the R&S FSP-K90 application.

 Press the GENERAL SETTINGS softkey to open the General Settings view.

 Select the Frequency field and enter the desired frequency to measure. Note that when a valid

frequency is entered the Channel No field updates.

 Switch Off the Auto Level Field. In this example the level detection measurement will be executed

manually.

All other settings in this view are sufficient for this example.

 Press the DEMOD SETTINGS softkey to open the Demod Settings view

1300.6789.42 1.5 E-3

General Information R&S FSP-K90

Enter the modulation scheme used in the Demodulator field.

Bursts to Analyze

Burst Type

Demodulator

Direct Link Burst

16QAM

Equal Length Burst

Min No of Data Symbols

Max No of Data Symbols

Close the Demod Settings by pressing the WLAN hotkey.

1

1366

1300.6789.42 1.6 E-3

R&S FSP-K90 General Information

Performing Level Detection

Connect the DUT to the RF input of the spectrum analyzer. (see Fig. 1-1 )

RF

DUT

Fig. 1-1 Preparation for level detection

the Level Detection measurement by pressing the AUTO LVL hotkey.

Start

During the level detection measurement the text "Running ..." is displayed in the Status Bar at the
bottom of the screen.

After successful level detection, the Status Bar will display “Measurement Complete”, the signal level
field for the selected input will be updated to show the detected signal level and the Magnitude Capture
Buffer (Screen A) will be updated to show the zero span trace obtained during the measurement
sequence.

Performing the main measurement

After level detection has been successfully completed the main measurement can be started. The set-up for
the main measurement is the same as that for the level detection measurement.
Start the measurement by pressing the RUN SGL hotkey.

During the measurement, the text "Running..." is displayed in the Status Bar at the bottom of the
screen.

Measurement results are updated once the measurement has completed. The results are displayed in
graphical form. The display can be toggled to a tabular list of measurement points by pressing the
DISPLAY softkey

1300.6789.42 1.7 E-3

General Information R&S FSP-K90

Navigation

This section deals with navigation within the option. Navigation here is taken to mean all forms of
interaction with the option except for remote control. The different methods of interacting with the option
are:

Hotkeys

•

• Softkeys

• Hardkeys

• Numeric Keypad

• Roll-key

• Cursor Keys

• External Keyboard

• Mouse

Hotkeys

Hotkeys are allocated to the seven keys at the bottom edge of the screen. On initial start-up of the K90
option, the hotkeys provided are shown in Fig. 1-2 . These hotkeys are present at all times once
the option has been started.

SPECTRUM

AUTO LVLWLAN

RUN SGL RUN CONT

SCREEN B

Fig. 1-2 Initial Hotkey menu

A keystroke activates the associated hotkey. An activated hotkey changes colour to green, as shown.

AUTO LVL AUTO LVL

1300.6789.42 1.8 E-3

R&S FSP-K90 General Information

These hotkeys perform the following operations:

PECTRUM

S

The SPECTRUM hotkey exits the R&S FSP-K90 option & returns to the
spectrum analyzer with all previous settings restored.

LAN

W

AUTO LVL

RUN SGL

RUN CONT

The WLAN hotkey returns the user to the main measurement menu of R&S
FSP-K90, where measurement results can be seen. All settings views and
dialogs are removed from the display, and the default softkey menu is displayed

The WLAN hotkey remains green whenever R&S FSP-K90 is active

The AUTO LVL hotkey starts a automatic level detection measurement.

If another measurement is running then the running measurement will be
aborted before the automatic level detection measurement is started.

Pressing the AUTO LVL hotkey whilst an automatic level detection
measurement is running causes the measurement to be stopped (aborted).

The RUN SGL hotkey starts the selected measurement in single sweep mode.

If another measurement is running, such as Calibration or a fixed frequency
measurement, the running measurement will be aborted before the single
sweep measurement is started.

Pressing the RUN SGL hotkey whilst a single frequency range measurement is
running causes the measurement to be stopped (aborted).

The RUN CONT hotkey starts the selected measurement in continuous sweep
mode

If another measurement is running then the running measurement will be
aborted before the continuous sweep measurement is started.
Pressing the RUN CONT hotkey whilst a continuous sweep measurement is
running causes the measurement to be stopped (aborted).

REFRESH

The REFRESH hotkey updates the current measurement results to reflect the
current measurement settings.
The REFRESH hotkey is available for all IQ measurement. The REFRESH
hotkey becomes available only when IQ data is available.

SCREEN [A|B]

The SCREEN [A|B] hotkey selects the specified screen as the active screen.
In full screen mode pressing the SCREEN [A|B] hotkey will display the specified
screen.
After Pressing the SCREEN [A|B] hotkey the label displayed in the hotkey is
changed e.g. after pressing the SCREEN A hotkey the label of the hotkey is
changed to SCREEN B. The label indicates which screen will become the active
screen after the hotkey is pressed.

1300.6789.42 1.9 E-3

General Information R&S FSP-K90

Softkeys

Settings Softkeys

The softkeys are assigned to the nine keys on the right-hand side of the display. These enable quick
access to all of the parameter settings and measurement screens of the K90 option. Each of the top two
softkeys, when pressed, brings up a settings view for a group of parameters. These softkeys are always
available (except when using Save/Recall and Print manager or controlling markers) and are as follows:

GENERAL

SETTINGS

DEMOD

SETTINGS

DISPLAY

GRAPH

LIST

EVM

SPECTRUM

CONSTELL

General settings

Trigger and IQ settings

D

emod settings -specifies details about the type of

burst to measure

- Signal characteristics, Data Capture,

Fig. 1-3 Main softkeys

Each of these groups of settings is described in detail in the Measurements & Settings section of this
manual.

Other Softkeys

All other softkeys have different functions depending on the instrument state. Therefore, the labels (text)
on the softkeys will vary to reflect their current function. The state of the softkeys is indicated by
different appearances and colours, as follows:

1300.6789.42 1.10 E-3

R&S FSP-K90 General Information

SOFTKEY

LABEL 1

SOFTKEY

LABEL 2

SOFTKEY

LABEL 3

SOFTKEY

LABEL 4

SOFTKEY

LABEL 5

SOFTKEY

LABEL 6

SOFTKEY

LABEL 7

SOFTKEY 8

VAL1

VAL2

Softkey available (normal state)

Softkey active (green)

Softkey active and dialog
displayed (red)

No softkey available

Softkey disabled => function not available
(without 3D Frame)

Toggle softkey (current value of parameter
highlighted in green)

Fig. 1-4 Setup of the softkey area

A softkey in its normal state, where its function is available, is coloured grey with a 3D border.

A softkey that is disabled, because its function is not

available, is coloured grey without a 3D border.
Softkeys may become disabled because of the state of the instrument or because other settings disable
the function associated with the softkey.

An active softkey (highlighted in green) is used when the softkey selects an item or view. For example,
the CARRIER SELETION softkey will be highlighted green when the Carrier Selection Dialog is
displayed

A toggle softkey is used to change the value of a parameter that has only two states. Each press of the
softkey toggles the value of the parameter. The current parameter value is highlighted in green in the
lower half of the softkey label. For example, in the measurement results view, the DISPLAY softkey will
have either LIST or GRAPH highlighted in green depending on whether the results are currently
displayed as a list of measurement points or graphical trace(s).

When no function is assigned to a softkey then no softkey label will be shown.

Hardkeys

Hardkeys allow quick access to the desired parameter and various functions. The hardkeys supported
by the K90 option are as follows (other hardkeys do nothing):

FREQ Hardkey

When the FREQ hardkey is pressed the General Settings view is displayed (if it is not already being
displayed) and the Frequency parameter is selected.

1300.6789.42 1.11 E-3

General Information R&S FSP-K90

AMPT Hardkey

When the AMPT hardkey is pressed the General Settings view is displayed (if it is not already being
displayed) and the relevant Signal Level parameter for the selected signal input is selected.

MKR Hardkey

When the MKR hardkey is pressed the main Marker softkey menu is displayed (if it is not already being
displayed).

MKR-> Hardkey

When the MKR-> hardkey is pressed the Marker extension softkey menu is displayed (if it is not already
being displayed).

SWEEP Hardkey

When the SWEEP hardkey is pressed the General Settings view is displayed (if it is not already being
displayed) and the Capture Time parameter is selected.

MEAS Hardkey

When the MEAS hardkey is pressed the Main softkey menu is displayed (if it is not already being
displayed).

TRACE Hardkey

When the TRACE hardkey is pressed the General Settings view is displayed (if it is not already being
displayed) and the Burst Count parameter is selected.

DISP Hardkey

When the DISP hardkey is pressed the Display softkey menu is displayed (if it is not already being
displayed).

FILE Hardkey

When the FILE hardkey is pressed, the Save & Recall softkey menu is displayed, allowing the save &
recall of settings and/or measurement results of the R&S FSP-K90 option.

PRESET Hardkey

When the PRESET hardkey is pressed the K90 option is exited and a preset will be performed. Note
that all options (including R&S FSP-K90) shall also be preset.

HCOPY Hardkey

When the HCOPY hardkey is pressed the print manager softkey menu is displayed, allowing selection
of the items to be printed.

1300.6789.42 1.12 E-3

R&S FSP-K90 General Information

External Keyboard

he external keyboard is optional. The keys on the external keyboard that can be used to interact with

T
the R&S FSP-K90 option are as follows:

Number keys 0 to 9

Decimal point (“.”)
Inserts a decimal point “.” at the cursor position.

Minus key (“-“)
Changes the sign of the mantissa or exponent of a numeric parameter. A “-“ is inserted at the cursor
position in the case of an alphanumeric parameter.

ESC key
Aborts the entry before it has been terminated. The previous value is restored.
Closes the entry field after termination of input.
Closes pop-up dialogs.

ENTER key
Terminates the input of dimension quantities. The new value is set.
Invokes the input of parameters or immediately sets the new value.
Selects the highlighted item in drop-down menus.

Left and Right Cursor Keys are used to:
Navigate between individual parameters within the setting views and some of the pop-up dialogs.
Navigate between the individual items within drop-down menus.
Move the cursor left & right inside the entry window to reach a particular position in the string during
alphanumeric entry.

Up and Down Cursor keys are used to:
Navigate between individual parameters within the setting views and some of the pop-up dialogs.
Navigate between the individual items within drop-down menus.
Increment or decrement the value of a parameter during numeric entry.

CTRL keys
Used to activate hotkeys. Each of the seven hotkeys is allocated a different function (F) key. To
access these hotkeys press CTRL and the corresponding F key together (see Fig. 1-5 ):

CTRL + F1 CTRL + F2 CTRL + F3 CTRL + F4 CTRL + F5 CTRL + F7

AUTO LVLNOISESPECTRUM

RUN CONT

SCREEN BRUN SGL

Fig. 1-5 Quick Access to Hotkeys

1300.6789.42 1.13 E-3

General Information R&S FSP-K90

Function Keys

sed to activate softkeys. Each of the nine softkeys is allocated a different function (F) key. To access

U
these softkeys the corresponding F key, as shown below:

SOFTKEY 1

S

OFTKEY 2

SOFTKEY 3

SOFTKEY 4

S

OFTKEY 5

S

OFTKEY 6

SOFTKEY 7

S

OFTKEY 8

SOFTKEY 9

F2

F

F

F5

F6

F

F8

F

F1

3

4

7

9

Fig. 1-6 Quick access to softkeys

Mouse

The mouse can be used to select individual parameters within the settings views or data entry dialogs
and to activate hotkeys and softkeys. It can also be used to select values from a drop-down list.

Selecting & Editing Parameters

Parameters are set either by numeric or alphanumeric entry or by simple selection from a list of
possible values (a drop-down list is used to select an “enumerated” value) or by using checkboxes to
turn a parameter setting on and off.

In all cases, the parameter has to be selected by placing focus on it and then editing has to be enabled
before its value can be changed.

The rollkey and cursor keys on the front panel are provided for navigation and selection of parameters.

The numeric keypad, rollkey and cursor keys on the front panel and an external keyboard (optional) are
provided for the entry of parameter values.

1300.6789.42 1.14 E-3

R&S FSP-K90 General Information

Numeric Keypad

The numeric keypad is provided for entry of numeric parameters. It contains

s

89

7

4

56

12

0

.

ESC

CANCEL

ENTER

OK

GHz

V

-dBm

MHz

dBm

kHz

3

dB

Hz

-

d

B..

BACK

the following keys:

ms

• Number keys 0 to 9

m

m

V

V

Bs
BV

ns
nV

Starts editing of the selected parameter. This enables a new value to be
entered for a parameter directly without having to press ENTER first. The
digit will be displayed as the first digit of the newly entered value.
Inserts a digit at the cursor position when editing an alphanumeric
parameter.

• Decimal point

Inserts a decimal point “.” at the cursor position.

• Sign key (“-“)

Changes the sign of the mantissa or exponent of a numeric parameter. A
“-“ is inserted at the cursor position when editing an alphanumeric
parameter.

• Unit keys (GHz/-dBm, MHz/dBm, kHz/dB and Hz/dB)

• Provides the numeric value entered with the selected unit and sets the

parameter to that value.

The unit keys are all assigned the value “1” for dimensionless quantities
or for level entries (e.g. in dB). The unit keys thus assume the function of
an ENTER key.

• BACK key

Deletes the character to the left of the cursor with alphanumeric entry.

• ESC/CANCEL key

Aborts the entry of a new parameter value. The previous value is
restored.

Closes pop-up dialogs.

• ENTER key

Enables editing of the selected parameter (using numeric keys or rollkey).
Finishes the editing of a parameter value. The new value is set.
For an alphanumeric value, the new value is set to that displayed (using
the current unit if applicable).

In a drop-down menu, the parameter is set to the currently selected value
in the list.

1300.6789.42 1.15 E-3

General Information R&S FSP-K90

Rollkey

The rollkey has various functions:

• In a settings view, the rollkey can be used to navigate between individual
parameters (the parameter selected being highlighted).

• In drop-down menus, the rollkey can be used to navigate between the
individual values for the parameter.

• During numeric entry, the parameter is incremented (by turning
clockwise) or decremented (by turning counter-clockwise) at a defined
step size (depending on the parameter).

• In setting views and data entry dialogs pressing the rollkey invokes the
input of parameters or immediately sets the new value, i.e. pressing the
rollkey is like pressing the ENTER key.

• In drop-down menus, pressing the rollkey selects the relevant item.

Cursor Keys

The keys

• Navigate between individual parameters within the setting views and
some of the pop-up dialogs.

• Navigate between the individual values within drop-down menus.

• Move the cursor left & right inside the entry window to reach a particular

position in the string during alphanumeric entry.

The keys

• Navigate between individual parameters within the setting views and
some of the pop-up dialogs.

• Navigate between the individual items within drop-down menus.

• Increment or decrement the value of a parameter during numeric entry.

and are used to:

and are used to:

1300.6789.42 1.16 E-3

R&S FSP-K90 General Information

Selection of a parameter within a settings view

Selection using rollkey  Press GENERAL SETTINGS softkey for example (General settings view

is displayed).

 Rotate the rollkey until reaching the required parameter.

urning the rollkey clockwise selects parameters in the upward direction,

T
turning it counter-clockwise selects parameters in the downward
direction.

Example: Selecting Signal Level (General settings)

ignal Level (RF)

S

Note: When the Signal Level parameter is selected its label is

highlighted blue.

When the desired parameter is reached press the rollkey to edit the
parameter.

Selection using cursor keys

Cursor

, ,
Within a list of parameters, the Down and Right both move to the next
item (down) in the list and the Up and Left keys both move to the
previous item (up) in the list.
Within a table of parameters, the cursor keys move the cursor in the
direction indicated.

To start editing the parameter, either press the ENTER key on the
numeric keypad, or press the rollkey.

For numeric parameters, editing can also be started by entering the new
value directly from the numeric keypad without pressing the ENTER key
first.

Example: Selecting Demodulator (Demod settings)

or

until obtaining the required parameter.

ENTER

OK

Note: When ENTER is pressed, a drop-down menu is displayed,

which contains all the available settings to which the
Demodulator parameter can be set.

1300.6789.42 1.17 E-3

General Information R&S FSP-K90

Selection using mouse

Selection using external
keyboard

 Use the mouse to move the cursor to the parameter and press

he left mouse button to select the parameter.

t

 To start editing the parameter, either press the ENTER key on

the numeric keypad, or press the rollkey.

For numeric parameters, editing can also be started by entering
the new value directly from the numeric keypad without pressing
the ENTER key first.

 Select parameter using the cursor keys (in the same way as

using the cursor keys on the front panel).

 To start editing the parameter, either press the ENTER key on

the numeric keypad, or press the rollkey.

For numeric parameters, editing can also be started by entering
the new value directly from the numeric keypad without pressing
the ENTER key first.

1300.6789.42 1.18 E-3

R&S FSP-K90 General Information

Entry of a numeric value

Once a parameter has been selected (see above), a new value for a numeric parameter can be entered in a
number of ways. With the exception of entry via the number keys, to start editing the parameter, either press
the ENTER key on the numeric keypad, or press the rollkey before following the instructions below.

If an error occurs, for example, the entered value is out of range, then the new value will not be
accepted for the parameter setting.

Entry using number keys
(numeric keypad)
Example: To enter 200 MHz

Entry using cursor keys

 Enter required value using the number keys.

2

0

0

MHz

dBm

Note: The parameter is not set to the new value until either one

of the unit keys on the numeric keypad, the ENTER or
the rollkey is pressed.

If the new value is not valid, then a message box is displayed and the
entered value will be replaced with a valid value. For example, when a
value above the maximum allowed is entered, then the maximum value
allowed will be shown in the entry box. The parameter will still be ready
for editing so that another value can be entered if desired.

 Cursor

or until obtaining the required value.

The application prevents the minimum and maximum values of the
parameter from being exceeded and displays an “Out of range“
message box if attempted.

N.B The cursor keys increment/decrement a parameter value in large
steps.

Example: Cursor down to 100MHz

Note: Each change of the parameter value takes place

immediately. No other keys need to be pressed.

1300.6789.42 1.19 E-3

General Information R&S FSP-K90

up dialogs, where used, do not close automatically.

Entry using rollkey

Entry using external
keyboard

 Rotate the rollkey until reaching the required value.

Turning the rollkey clockwise increases the value, turning it counter
clockwise decreases the value.

he application prevents the minimum and maximum values of the

T
parameter from being exceeded and displays an “Out of range“ message
box if attempted.

N.B The rollkeys increment/decrement a parameter value in small steps

Example: Rotate to 200MHz

Note: Each change of the parameter value takes place

immediately. No other keys need to be pressed.

 Enter value using number keys 0 – 9 in the same way as for using the

number keys on the numeric keypad (see above).

Terminating the entry

Correcting the entry

Aborting the entry

 Press one of the unit keys on the numeric keypad.

The unit is entered in the parameter’s edit box and the new parameter
value is set immediately.

 Press the ENTER key (on numeric keypad or external keyboard) or

press the rollkey.

The new parameter value is set immediately.

Note: Pop-

They can be closed by pressing the ESC key.

In both cases, if the new value is not valid, then a message box is displayed
and the entered value will be replaced with a valid value. For example, when
a value above the maximum allowed is entered, then the maximum value
allowed will be shown in the entry box. The parameter will still be ready for
editing so that another value can be entered if desired.

 Position the cursor to the right of the digit which is to be deleted using

the cursor keys

 Press the BACK key. The digit to the left of the cursor is deleted.

 Enter new digits. Each digit is inserted to the left of the cursor, the

other digits are shifted right.

 Press the ESC key during parameter editing.

The original parameter value is restored. The new entry is deleted.

 If a pop-up dialog is displayed, press the ESC key again.

or .

The entry window is closed, the original value remains active.

1300.6789.42 1.20 E-3

R&S FSP-K90 General Information

Entry of an enumerated value

Once a parameter has been selected (see above), a new value for an enumerated parameter can be
entered in a number of ways. To start editing the parameter, either press the ENTER key on the
numeric keypad, press the rollkey or left click with the mouse on the drop down button before following
the instructions below.

Note: When the rollkey or ENTER is pressed, a drop-down menu is displayed, which contains all

the available settings that may be selected for the parameter.

Selection of setting using
cursor keys

 Cursor

 Press ENTER on external keyboard or numeric keypad, or press

rollkey to select the desired setting of parameter.

Note: Currently selected setting of the parameter is highlighted blue.
Pressing ENTER sets the new setting of the parameter

or

immediately.

until obtaining the required setting.

Selection of setting using
rollkey

Selection of setting using
mouse

Selection of setting using
external keyboard

 Rotate the rollkey until reaching the required setting.

 Press rollkey to select setting.

Example: Select Mode parameter.

Note: Currently selected setting of the parameter is highlighted

blue.
Pressing the rollkey sets the new setting of the parameter
immediately.

 When the parameter is selected and ready for editing, select a

new setting using the mouse by left-clicking on the new setting
from the drop-down list. The new setting of the parameter is set
immediately.

 Select setting using cursor keys.

 Press ENTER to set the parameter to the new value.

1300.6789.42 1.21 E-3

General Information R&S FSP-K90

Entry of a checkbox

A checkbox is used for parameter settings that are either On or Off (Boolean settings). A checkmark ()
appears in the box when the setting is On; the checkbox is empty when the setting is Off.

Once a parameter has been selected (see above), a new value for a Boolean parameter can be entered
in a number of ways. Because Boolean parameters are very simple, it is not necessary to press the

NTER key on the numeric keypad or to press the rollkey in order to edit them.

E

Toggle between the two
states of a checkbox using
rollkey

Toggle between the two
states of a checkbox using
numeric keypad

 Press the rollkey to toggle between the two states.

Example: Turn Auto Level setting to Off

press

ENTER

OK

Note: The checkbox is empty when the settings is Off

 Press the ENTER key to toggle between the two states.

Example: Turn Auto Level setting to On

ENTER

OK

Toggle between the two
states of a checkbox using a
mouse

Toggle between the two
states of a checkbox using
external keyboard

 Left-click on the checkbox to toggle between the two states.

 Press ENTER to toggle between the two states.

1300.6789.42 1.22 E-3

R&S FSP-K90 General Information

Status Bar & Title Bar

Title Bar

The title bar is visible at the very top of the display when FSP-K90 is active and no settings views are
displayed.

Fig. 1-7 Title Bar

The centre of the title bar shows the wireless LAN standard applicable to the current measurement

Status Bar

The main status bar is displayed at the bottom of the display, just above the hotkeys.

When a parameter in a settings view is selected, the status bar will display the minimum and maximum,
settings for the selected parameter (see ).

MIN:<XX.XX> MAX:<XX.XX>

Fig. 1-8 Status Bar

When a parameter whose value is enumerated or Boolean in type is selected in any dialog, the status
bar will show “N/A“ displayed for the minimum and maximum, since the minimum and maximum values
are “Not Applicable.”

At other times, the status bar shows the current measurement status along with detailed information
about the progress through any running measurement.

The status bar is also used to display warning and error messages to the user. In order to highlight
these messages, warning messages are displayed with a blue background and error messages with a
red background. Refer to Section 5 for a list of warning and error messages.

1300.6789.42 1.23 E-3

General Information R&S FSP-K90

Save/Recall

This section of the user manual describes the Save/Recall facility of the option.

F

ILE

The FILE hardkey brings up the Save/Recall softkey menu. Any settings views on display

hen the save/recall softkey menu is displayed shall be closed.

w

Fig. 1-9 Save/Recall softkey menu

The save/recall facility provided by FSP-K90 is exactly the same as that provided by the host analyser.
Refer to the user manual for the spectrum analyzer for details of the save/recall facility operation.

The save/recall facility in FSP-K90 provides the following items that can be saved and/or recalled:

• Current Settings

• All Traces

• Raw IQ Data

To close the save/recall softkey menu and return to the main FSP-K90 softkey menu, press the WLAN
hotkey.

All user settings provided by FSP-K90

All current trace results

Allows the raw IQ trace results to be stored. When recalled the data is
reprocessed to generate results

1300.6789.42 1.24 E-3

R&S FSP-K90 General Information

Printing

This section of the user manual describes print facility of the option

HCOPY

The HCOPY hardkey brings up the print softkey menu. Any settings views on
display when the print softkey menu is displayed shall be closed.

Fig. 1-10 Print softkey menu

The print facility provided by R&S FSP-K90 is exactly the same as that provided by the host analyser.
Refer to the user manual for the spectrum analyzer for details of the print facility operation.

To close the print softkey menu and return to the main R&S FSP-K90 softkey menu, press the WLAN
hotkey.

1300.6789.42 1.25 E-3

R&S FSP-K90 Measurements & Settings

2 Measurements & Settings

This section contains a detailed description of all measurement modes, settings & results. It covers the
following subjects:

• Measurement modes

• Running measurements

• Measurement results

• General settings

• Demodulation settings

• Gate settings

• Marker settings

• General hints about measurements

Measurements

R&S FSP-K90 provides two main measurement types:

• IQ Measurements

• Frequency Sweep Measurements

1300.6789.42 2.1 E-3

Measurements & Settings R&S FSP-K90

1300.6789.42 2.2 E-3

R&S FSP-K90 Measurements & Settings

IQ measurements

he following measurements results are obtained in IQ measurement mode:

T

• EVM Vs Symbol

• EVM Vs Carrier

• Phase Vs Preamble

• Frequency Vs Preamble

• Constellation Vs Symbol

• Constellation Vs Carrier

For each of the above results the Magnitude Capture Buffer display is available.

Fig. 2-1 Magnitude Capture Buffer Results

The Magnitude Capture buffer shows the complete range of captured data for the last sweep.

All IQ measurements process the same signal data and as such all IQ measurement results are
available after a single IQ measurement execution.

IQ measurements can be run in split screen mode (allowing both the Magnitude Capture Buffer Display
and the selected IQ measurement results to be displayed simultaneously) or in full screen mode (with
either the Magnitude Capture Buffer Display or the selected IQ measurement results displayed).

1300.6789.42 2.3 E-3

Measurements & Settings R&S FSP-K90

EVM Vs Symbol

E

VM VS

SYMBOL

The EVM Vs Symbol measurement results are selected by pressing the EVM softkey
in the main measurement softkey menu followed by the EVM Vs SYMBOL softkey.

Fig. 2-2 EVM Vs Symbol

The EVM Vs Symbol results display shows the minimum, average and maximum EVM measured over
the full range of the measured input data. The results are displayed on a per-symbol basis, with blue
vertical lines marking the boundaries of each burst. Note that burst boundary lines are only displayed if
the number of analyzed bursts is less than 250.

The scaling of the Y-Axis can be modified to allow the results to be scaled to an optimum level.

Y AXIS/

DIV

Pressing Y AXIS/ DIV softkey displays a pop-up dialog which allows the step size
for the Axis to be defined.

1300.6789.42 2.4 E-3

R&S FSP-K90 Measurements & Settings

EVM Vs Carrier

E

VM VS

CARRIER

The EVM Vs Carrier measurement results are selected by pressing the EVM softkey
in the main measurement softkey menu followed by the EVM Vs CARRIER softkey.

Fig. 2-3 EVM Vs Carrier Results

The EVM Vs Carrier results display shows the all EVM values recorded on a per-carrier basis over the
full set of measured data. An average trace is also displayed. Note the results are restricted to carriers
–14 to +14 (inclusive).

The scaling of the Y-Axis can be modified to allow the results to be scaled to an optimum level.

Y AXIS/

DIV

Pressing Y AXIS/ DIV softkey displays a pop-up dialog which allows the step size
for the Axis to be defined.

1300.6789.42 2.5 E-3

Measurements & Settings R&S FSP-K90

Error Vs Preamble

ERROR

REQ PHASE

F

The Error Vs Preamble results are selected by pressing the EVM softkey in the main
measurement softkey menu followed by the ERROR FREQ/PHASE softkey. Subsequent
presses of the ERROR FREQ/PHASE softkey toggle the error measurement between
Frequency Error Vs Preamble and Phase Error Vs Preamble.

Fig. 2-4 Error Vs Preamble Results

The Error Vs Preamble results display shows the error values recorded over the preamble part of the
burst. A minimum, average and maximum trace are displayed. The results display either relative
frequency error or phase error.

The scaling of the Y-axis can be modified to allow the results to be scaled to an optimum level.

Y AXIS/

DIV

Pressing the Y AXIS/ DIV softkey displays a pop-up dialog which allows the
settings of the Y-axis to be controlled. The settings provided are the same as for the
EVM Vs Symbol measurement sceen.

1300.6789.42 2.6 E-3

R&S FSP-K90 Measurements & Settings

Constellation Vs Symbol

CONSTELL

The Constellation diagramm is selected by pressing the CONSTELL softkey in the
main measurement softkey menu followed by the CONSTELL softkey.

Fig. 2-5 Constellation Vs Symbol Results

The Constellation display shows the Inphase and Quadrature phase results over the full range of the
measured input data. The ideal points for the selected modulations scheme are displayed for reference
purposes.

The amount of data displayed in the Constellation results display can be reduced by selecting the
carrier or carriers for which data is to be displayed.

CARRIER

SELECTION

Pressing CARRIER SELECTION softkey displays a pop-up dialog which
allows the carrier for data display to be selected. Either a specific carrier
number or pilots only can be selected. Selecting All Carriers allows all
the results to be displayed. Note that carrier selection is restricted to
carriers –14 to +14 (inclusive).

1300.6789.42 2.7 E-3

Measurements & Settings R&S FSP-K90

Constellation Vs Carrier

C

ONSTELL

VS CARRIER

The Constellation Vs Carrier measurement results are selected by pressing the

CONSTELL softkey in the main measurement softkey menu followed by the
CONSTELL VS CARRIER softkey.

Fig. 2-6 Constellation Vs Carrier Results

The Constellation Vs Carrier results display shows the Inphase and Quadrature phase results over the
full range of the measured input data plotted on a per-carrier basis. The magnitude of the Inphase and
Quadrature part is shown on the Y-axis, both are separated by different colors (I-> yellow, Q->blue).
Note the results are restricted to carriers –14 to +14 (inclusive)

1300.6789.42 2.8 E-3

R&S FSP-K90 Measurements & Settings

Frequency sweep measurements

he following measurements results are obtained in frequency sweep mode:

T

• Spectrum Mask

• Spectrum ACPR

he frequency sweep measurements use different signal data to IQ measurements and as such it is not

T
possible to run an IQ measurement and then view the results in the frequency sweep measurements
and vice-versa. Also because each of the frequency sweep measurement use different settings to
obtain signal data it is not possible to run a frequency sweep measurement and view the results in
another frequency sweep measurement.

All frequency sweep measurements are run in full screen mode.

Spectrum Emission Mask

SPECTRUM

MASK

The Spectrum Emission Mask measurement results are selected by pressing the

SPECTRUM softkey in the main measurement softkey menu followed by the SPECTRUM
MASK softkey.

Fig. 2-7 Spectrum Emission Mask Results

The Spectrum Mask results display shows power against frequency. The span of the
results is related to the specified sample rate. A limit line representing the spectrum mask
specified for the selected standard is displayed and an overall pass/fail status is displayed
for the obtained results against this limit line. If the Sweep Count (Mask/ACP) parameter in
the General Settings view is set to any value other than 1 then the measurement is
performed over the specified number of sweeps. When the measurement is performed
over multiple sweeps a max hold trace is displayed as well as an average trace.

1300.6789.42 2.9 E-3

Measurements & Settings R&S FSP-K90

The Spectrum Emission Mask measurement can be configured from the SEM settings

iew:

v
The SEM SETTINGS softkey brings up the SEM Settings view.

Fig. 2-8 ACP Settings view

IEC/IEEE-bus command: SENS:POW:SEM USER|IEEE|ETSI
SENS:POW:SEM:CLASs

SEM according to

File Name

SEM according to specifies how the Spectrum Emission
Mask settings and limits are applied. This parameter
provides the following settings:

ETSI – Settings and limits are as specified in the standard

IEEE – Settings and limits are as specified in the standard

User – Settings and limits are configured via an XML file

1300.6789.42 2.10 E-3

R&S FSP-K90 Measurements & Settings

SEM Configuration

The SEM configuration shows the settings and limits applied over specified frequency ranges around
the TX channel. The settings displayed are dependent on the selected Link Direction and Power Class

Fig. 2-9 SEM Configuration

1300.6789.42 2.11 E-3

Measurements & Settings R&S FSP-K90

Spectrum ACPR

S

PECTRUM

ACPR

The Spectrum Mask measurement results are selected by pressing the

SPECTRUM softkey in the main measurement softkey menu followed by the
SPECTRUM ACPR softkey.

Fig. 2-10 Spectrum ACPR Results

The Spectrum ACPR (Adjacent Channel Power (Relative)) is similar to the
Spectrum Mask measurement, and provides information about leakage into
adjacent channels. The results show the relative power measured in the three
nearest channels either side of the measured channel. This measurement is the
same as the Adjacent Channel Power measurement provided by the Spectrum
Analyzer.

1300.6789.42 2.12 E-3

R&S FSP-K90 Measurements & Settings

Automatic Level Detection

utomatic level detection allows the Signal Level setting to be calculated from the input signal.

A

Automatic level detection can be performed in one of two ways:

Pressing the AUTO LVL hot-key
Setting Auto Level in the General Settings view to ON

Running the Automatic Level Detection by pressing the AUTO LVL hot-key allows the level detection to
be run at any time. Once the Automatic Level Detection has completed the trace is displayed in the
Magnitude Capture Buffer display.

Running the Automatic Level Detection by Setting Auto Level in the General Settings view to ON
means that an Automatic Level Detection measurement is executed before each main measurement
sweep. When running the Automatic Level Detection this way no trace for the Automatic Level
Detection measurement is displayed. This way of running the Automatic Level Detection will cause
measurements to run more slowly and as such it is recommended that Automatic Level Detection is
only run in this way when the speed of measurement is not important or when running continuous
measurements are being run with a signal which varies in level from one sweep to the next.

Running measurements

To start a measurement, press the RUN SGL hotkey (single) or RUN CONT hotkey (continuous).

A single measurement will complete once the requested number of bursts have been obtained or a
single sweep has been completed, depending on the measurement settings. When a measurement is
completed in continuous mode then a new measurement will be started.

Note that if one measurement is started whilst another measurement is in progress, for example, a
single measurement is started whilst a continuous measurement is in progress, then the first
measurement will be aborted and the new measurement started immediately.

During a measurement, the text "Running..." is displayed in the Status Bar at the bottom of the screen.
After successful completion of a single measurement, the Status Bar will display “Measurement
Complete”

1300.6789.42 2.13 E-3

Measurements & Settings R&S FSP-K90

Measurement Results

Measurement results

The tabular section below the title bar shows the overall measurement settings used to obtain the
current measurement results.

Fig. 2-11 Overall measurement settings summary

The settings summary includes the following information:

• Frequency - The frequency of the measured input signal. Note that no value is displayed
in this field when Baseband input is selected.

• Sweep Mode - Shows “Single” for a single measurement and “Continuous” for a continuous
measurement.

• Burst Type - The type of burst being analyzed.

• Signal Level - The expected mean signal level for the input signal

• Trigger Mode - The trigger source used to start the measurement sweep

• Modulation - Shows either the settings of the Demodulator or PSDU Modulation to

Analyze from the Demod Settings view depending on which parameter is
active.

• External Att - The attenuation (positiv values) or gain (negative values) applied to the
signal external (ie. before the RF- or IQ- connector of the spectrum
analyzer)
eg.
External Att = 10 dB means that before the RF-connector of the R&S FSP a
10 dB attenuator is used.
External Att = -20 dB means that before the RF-connector of the R&S FSP a
amplifier with 20dB gain is used.

• Trigger Offset - The trigger delay (positive value) or pre-trigger time (negative value) applied
to the trigger.

• No Of Data Symbols - shows the minimum and maximum number of data symbols that a burst
may have if it is to be considered in results analysis.

1300.6789.42 2.14 E-3

R&S FSP-K90 Measurements & Settings

Results Summary

he results summary table is displayed for IQ measurements when the display mode is set to List. This

T
table shows the overall measurement results and provides limit checking for result values in accordance
with the selected standard.

Fig. 2-12 Result Summary Table

Result values which are within the limit as specified by the standard are displayed in green. Result
values which are within the limit but inside the margin area around the limit are displayed in yellow.
Result values which are outside of the limits specified by the standard are displayed in red with a ‘*’ to
the left. Results which have no limits specified by the standard are displayed in white. Limit values are
displayed in white (not bold).

The results displayed in this table are for the entire measurement. A specific number of bursts have
been requested which requires more than one sweep then the results summary update at the end of
each sweep showing the results so far. The number of bursts measured and the number of bursts
requested are displayed to show the progress through the measurement.

1300.6789.42 2.15 E-3

Measurements & Settings R&S FSP-K90

General Settings

This section of the user manual describes the General Settings view where all settings related to the
overall measurement can be modified, that is the Signal Characteristics, Data Capture, Trigger and IQ
settings.

GENERAL

SETTINGS

The GENERAL SETTINGS softkey brings up the General Settings view.

Fig. 2-13 General Settings view

The parameters within the General settings view are logically grouped together into:

• Signal Characteristics

• Data Capture Settings

• Trigger Settings

• IQ Settings

• Advanced Settings

Any parameters that are not available for editing will have a grey background. This usually occurs when
one parameter setting makes another parameter invalid, for example if the Trigger Mode is Free Run
then none of the parameters below this (Trigger Offset, Power Level and Auto Power Trigger Level)
have any meaning, so these parameters are greyed out.

When a particular parameter is selected within the General Settings view the status bar changes to
display information about the valid settings for the selected parameter.

1300.6789.42 2.16 E-3

R&S FSP-K90 Measurements & Settings

Signal Characteristics

he Signal Characteristics settings are the general settings concerning the level, attenuation and

T
frequency of the signal to be measured.

Standard

Standard is used to select the wireless LAN standard to be
measured against. This is necessary to ensure that the
measurements are performed according to the specified
standard with the correct limit values and limit lines.

This parameter provides a list of settings. The list provided
depends on the standards which have been installed.

Frequency

Frequency specifies the Center Frequency of the signal to
be measured.

When the Frequency is modified the Channel No parameter
is updated accordingly.

The Frequency parameter is not editable when Base band
input is selected because Frequency only make sense for a
RF signal.

Channel No

Auto Level

Channel No specifies the channel to be measured.

When the Channel No is modified the Frequency parameter
is updated accordingly.

The Channel No parameter is not editable when Base band
input is selected because Channel No only make sense for
a RF signa.l

Auto Level selects whether the reference level for
measurements is measured automatically (ON) or entered
manually by the user (OFF).

When Auto Level is set to ON, R&S FSP-K90 will measure
the reference level automatically at the start of each
measurement sweep. This ensures that the reference level
is always set at the optimal level for obtaining accurate
results but will result in slightly increased measurement
times.

1300.6789.42 2.17 E-3

Measurements & Settings R&S FSP-K90

Ext Att

Ext Att specifies the external attenuation or gain applied to
the RF signal. A positive value indicates attenuation, a
negative value indicates gain.

All displayed power level values will be shifted by this value.

Signal Level (RF)

Signal Level (RF) specifies the expected level of the RF
input signal.

The Signal Level (RF) is updated after an automatic level
detection measurement has been executed when RF input
is selected.

The Signal Level (RF) parameter is not editable when Base
band input is selected because Signal Level (RF) only
make sense for an RF signal.

Data Capture Settings

The Data Capture settings specify how much data is to be captured and measured.

Capture Time

Capture Time specifies the time (and therefore the amount
of data) to be captured in a single measurement sweep.

Overall Burst Count

Overall Burst Count specifies whether a specified number
of bursts are to be captured and analyzed.

When Overall Burst Count is set to OFF then data analysis
shall be performed on a single measurement sweep. When
Overall Burst Count is set to ON then data analysis may be
performed over a number of consecutive sweeps until the
required number of bursts has been captured and analyzed.

No of Burst to Analyze

No of Burst to Analyze specifies the number of bursts to be
measured.

If the number of bursts of the specified type are not
contained in a single measurement sweep then R&S FSP­K90 will continue to perform measurement sweeps until the
requested number of bursts of the specified type have been
captured.
The No of Burst to Analyze parameter is not editable when
Overall Burst Count is set to OFF.

1300.6789.42 2.18 E-3

R&S FSP-K90 Measurements & Settings

Trigger Settings

he Trigger settings contains all the settings related to the triggering of a measurement sweep.

T

Trigger Mode

Trigger Mode is the source of the trigger for the
measurement sweep.

The possible values for the Trigger Mode are:

Free Run - the measurement sweep starts

immediately.

External - triggering via a TTL signal at the input

connector EXT TRIGGER/GATE on the
rear panel.

Power - the measurement sweep starts when the

signal power meets or exceeds the
specified power trigger level.

Trigger Offset

Power Level (RF)

Auto Power Trigger Level

Trigger Offset specifies the time offset between the trigger
signal and the start of the sweep. A negative value
indicates a pre-trigger.

The Trigger Offset parameter is not editable when Trigger
Mode is set to Free Run because this indicates that the
measurement sweep should trigger immediately and as
such a trigger delay or pre-trigger would not be appropriate.

Power Level (RF) Specifies the trigger level when a power
trigger is selected and RF input is selected.

The Power Level parameter is editable only when Trigger

Mode is set to Power.

Auto Power Trigger Level selects whether the level for the

power trigger is measured automatically (ON) or entered
manually by the user (OFF).

When Auto Power Trigger Level is set to ON, R&S FSP­K90 will measure and determine the power trigger level
automatically at the start of each measurement sweep. This
ensures that the power trigger level is always set at the
optimal level for obtaining accurate results but will result in
a slightly increased measurement times.

The Auto Power Trigger Level parameter is editable only
when Trigger Mode is set to Power.

1300.6789.42 2.19 E-3

Measurements & Settings R&S FSP-K90

IQ Settings

he IQ settings contains settings related the Inphase and Quadrature phase of the input signal.

T

Swap IQ

Swap IQ allows selection between normal and inverted I/Q
modulation. The settings for this parameter are:
OFF Normal I/Q modulation.
ON I and Q signals are interchanged.

1300.6789.42 2.20 E-3

R&S FSP-K90 Measurements & Settings

Advanced Settings

he Advanced Settings contain settings that control details about how the instrument operates and how

T
measurements are performed.

The advanced settings are displayed on the right-hand side of the general settings view, and are only
displayed when the Advanced Settings checkbox is checked.

Fig. 2-14 Advanced Settings

Auto Level

Auto Level selects whether the reference level for
measurements is measured automatically (ON) or entered
manually by the user (OFF).

The Auto Level advanced setting is the same as the Auto
Level in the Signal Characterstics. It is repeated in the
Advanced Settings for convenience.

1300.6789.42 2.21 E-3

Measurements & Settings R&S FSP-K90

Auto Level time

Auto Level time specifies the sweep tim e to be used for
the auto level measurement.

Ref Level

Ref Level specifies the reference level to use when running
measurements.

When the Ref Level is modified, the Signal Level parameter
is updated accordingly (depending on the currently selected
standard and measurement type).

The Ref Level is editable only when Auto Level is switched off.

RF Att

El Att

The RF Att parameters specify the settings for the
meachanical attenuator.

The RF Att is editable only when Auto Level is switched off.

When Auto Level is switched on, the RF Att setting is
coupled to the Ref Level setting. When Auto Level is
switched off, the RF Att setting is independent from the Ref
Level setting and must be specified separately.

The El Att parameters specify the settings for the electronic
attenuator.

The El Att parameters are:

Mode – Specfies whether the electronic attenuator should
be controlled manually (Manual) or by the Auto option

State – Specfies whether the electronic attenuator should
be switched ON or OFF.

Settings – Specifies the attenuation value the electronic
attenuator should be switched to

When the mode is set to Auto, the state and setting fields
will be automatically calcuated by the option, i.e. fields will
not be editable.

When the state is switched off, the setting field is non­editable.

When the frequency is set such that the electronic
attenuator cannot be used or the electronic attenuator is not
installed, all Electronic Attenuator fields are read-only.

1300.6789.42 2.22 E-3

R&S FSP-K90 Measurements & Settings

YIG Filter

The YIG Filter parameter specifies how the YIG filter is
used during measurements.

The YIG Filter parameters are:

Mode – Specfies whether the YIG filter should be controlled
manually (Manual) or by the Auto option

State – Specfies whether the YIG filter should be switched
ON or OFF.

When the mode is set to Auto, the state field will be
automatically calcuated by the option, i.e. this field will not
be editable.

Sample Rate

Sample Rate specifies the sample rate used for IQ
measurements

The Sample Rate is editable only when Standard is set to
IEEE 802.11a.

High Dynamic

The High Dynamic parameter is only available when the
B72 option is installed, and the sample rate is set between

20.4 MHz and 40.8 MHz.

When the High Dynamic parameter is set to ON then
measurements are performed using a wide filter in the
normal signal path rather than using the B72 option.

The advantage of setting the High Dynamic parameter ON
is a higher resolution (because the "normal" signal path
uses a 14 bit ADC). The disadvantage is that all signals left
or right the spectrum of interest are folded into the spectrum
itself.

1300.6789.42 2.23 E-3

Measurements & Settings R&S FSP-K90

Gate Settings

he gate settings settings specify the characteristics of the gate to be applied to the measurement.

T
Note that when the gate settings dialog is displayed the measurement view automatically swaps to the
Magnitude Capture buffer display in order to allow the gate to be set the correct part of the sweep.

Delay

Delay specifies the start point of captured data to be used
in results calculation, i.e. the delay from the start of the
captured data.

Delay can be specified in the following ways:

• Time

• Samples

When the delay is specified in one unit, the other unit field
is updated accordingly.

When a value is supplied for the gate delay (in any unit) the
gate delay line in the Magnitude Capture Buffer (marker
with GD) is displayed in the new position.

Length

Link Gate and Marker

Length specifies the amount of captured data to be used in
results calculation.

Length can be specified in the following ways:

• Time

• Sample

When the length is specified in one unit, the other unit field
is updated accordingly.

When a value is supplied for the gate length (in any unit)
the gate length line in the Magnitude Capture Buffer
(marker with GL) is displayed in the new position.

Link Gate and Marker allows the position of the marker and
the gate lines to be linked.

When Link Gate and Marker is switched ON the marker is
positioned half way between the gate start and the gate
end. The marker position alters when the gate is modified,
and the gate lines move with the marker when the marker
position is altered.

1300.6789.42 2.24 E-3

R&S FSP-K90 Measurements & Settings

Demod Settings

This section of the user manual describes the Demod (Short for Demodulation) Settings view where the
settings associated with the signal modulation can be modified.

DEMOD

SETTINGS

The DEMOD SETTINGS softkey brings up the Demod Settings view.

Fig. 2-15 Demod Settings view

The Demod settings are logically grouped together into:

• Burst to analyze settings

• Tracking settings

When a particular parameter is selected within the Demod Settings view the status bar
changes to display information about the valid settings for the selected parameter.

1300.6789.42 2.25 E-3

Measurements & Settings R&S FSP-K90

Burst To Analyze Settings

he burst to analyze settings specify the characteristics of the bursts to be considered in the

T
measurement results. Only those burst which meet the criteria specified in this group will be included in
measurement analysis

Burst Type

Burst Type specifies the type of burst which should be
included in measurement analysis. Only one burst type can
be selected for measurement results.

The settings for this parameter depend on which wireless
LAN standard has been set for the Standard parameter in
the General Settings view.

Demodulator

Demodulator is used to specify the modulation to be applied
to the measured data. If the captured data uses a different
modulation scheme than that specified by this parameter
then the results will be of limited use.

The settings for this parameter depend on which wireless
LAN standard has been set for the Standard parameter in
the General Settings view.

Demodulator is only available when Use Signal Symbol
Field Content is set to OFF.

Equal Burst Length

No of Data Symbols

Equal Burst Length allows burst with a range of data
symbols or bursts with a specific number of data symbols to
be selected for measurement analysis.

When Equal Burst Length is set to ON then the next
parameter in the group becomes No of Data Symbols and
only burst with exactly the number of symbols specified in
No of Data Symbols are considered for measurement
analysis.

When Equal Burst Length is set to OFF then the next
parameter in the group becomes Min No of Data Symbols
and bursts with a number of data symbols within the range
specified by the Min No of Data Symbols and Max No of
Data Symbols parameters take part in measurement
analysis.

No of Data Symbols specifies the number of data symbols a
burst must have for it to be considered in measurement
analysis.

No of Data Symbols is only available when Equal Burst
Length is set to ON.

1300.6789.42 2.26 E-3

R&S FSP-K90 Measurements & Settings

Min No of Data Symbols

Min No of Data Symbols specifies the minimum number of
data symbols a burst must have for it to be considered in
measurement analysis.

Min No of Data Symbols is only available when Equal Burst

ength is set to OFF.

L

Max No of Data Symbols

Max No of Data Symbols specifies the maximum number of
data symbols a burst must have for it to be considered in
measurement analysis.

Max No of Data Symbols is only available when Equal Burst
Length is set to OFF.

Chan Est in Preamb and Payl

Chan Est in Preamb and Payl specifies how accurately the
EVM results should be calculated.

When Chan Est in Preamb and Payl is set to OFF then the
EVM results are calculated in accordance with the selected
standard. In this case channel estimation is done in the the
preamble only.

When Chan Est in Preamb and Payl is set to ON then the
EVM results are calculated more accurately. In this case
channel estimation is done in both preamble and payload.

1300.6789.42 2.27 E-3

Measurements & Settings R&S FSP-K90

Tracking Settings

he tracking settings allow various errors in measurement results to be compensated for.

T

Phase

Phase is used to specify whether or not the measurement
results should be compensated for phase error.

When Phase is set to ON then the measurement results will
be compensated for phase error on a per-symbol basis.

Timing

Timing is used to specify whether or not the measurement
results should be compensated for timing error.

When Timing is set to ON then the measurement results
will be compensated for timing error on a per-symbol basis.

Level

Level is used to specify whether or not the measurement
results should be compensated for level error.

When Level is set to ON then the measurement results will
be compensated for level error on a per-symbol basis.

1300.6789.42 2.28 E-3

R&S FSP-K90 Measurements & Settings

Markers

This section of the user manual describes the Marker facility of the option.

he MKR hardkey brings up the marker softkey menu. Any settings views on display

MKR

T
when the marker softkey menu is displayed shall be closed.

Fig. 2-16 Marker Menu

From the marker menu it is possible to adjust the marker position, use the marker to
zoom in & out and switch the marker display off.

Adjusting Markers

The marker can be adjusted by pressing the marker softkey in the marker softkey menu

MARKER 1

The MARKER softkey displays the Marker pop-up dialog. The contents
of the marker pop-up depends on the type of graph to which the marker
being adjusted belongs.

As soon as an field in the marker pop-up dialog is adjusted then the
marker position in the trace will update, along with the results displayed
for the marker.

1300.6789.42 2.29 E-3

Measurements & Settings R&S FSP-K90

Marker Zoom

zoom facility is available for markers belonging to the following result traces:

A

• Magnitude Capture

• Constellation Vs Symbol

• Constellation Vs Carrier

MARKER

ZOOM

The MARKER ZOOM softkey displays the Marker Zoom pop-up dialog
which contains the magnification factor for the zoom.

The maximum magnification depends on the type of results trace.

UNZOOM

The UNZOOM softkey cancels the marker zoom.

Toggle Marker Display

Markers can be toggled by pressing the Marker soft-key as follows:

MARKER 1

MARKER 1

MARKER 1

Pressing the MARKER softkey when the marker is not displayed
(softkey has grey background) causes the Marker pop-up to be
displayed and the marker to be switched on.

Pressing the MARKER softkey when the Marker pop-up is displayed
(softkey has red background) causes the marker to be switched off.

Pressing the MARKER softkey when the Marker is displayed but the
Marker pop-up is not displayed (softkey has green background) causes
the Marker pop-up to be displayed.

All markers in the active screen can be switched off by pressing the MARKER OFF softkey.

1300.6789.42 2.30 E-3

R&S FSP-K90 Measurements & Settings

Assigning Markers to Traces

n result graphs which have more than one trace (e.g. EVM vs. Symbol) the marker can be assigned to

I
any of the displayed traces.

MKR->

Pressing the MKR-> hardkey displays the Marker Extension softkey menu.

MKR->TRACE

Fig. 2-17 Marker Extension Softkey Menu

Pressing the MKR->TRACE displays the Select Trace pop-up dialog. This allows
the ID of the trace to which the marker is to be attached to be supplied.

1300.6789.42 2.31 E-3

Measurements & Settings R&S FSP-K90

Display Settings

The layout of the display can be controlled using the display menu

he DISPLAY hardkey brings up the display softkey menu. Any settings views on display

DISPLAY

T
when the display softkey menu is displayed shall be closed.

Fig. 2-18 Display Menu

The display menu allows the display to be changed between split and full screen display
for IQ measurement results. Note that for frequency sweep measurement results
(Spectrum Mask and Spectrum ACPR) the display is always full screen.

The active screen can be selected by pressing the SCREEN A/SCREEN B hotkey. A
screen needs to be made active in order to control the markers it displays.

In full screen mode the SCREEN A/SCREEN B hotkey also toggles which screen is
displayed.

1300.6789.42 2.32 E-3

R&S FSP-K90 Measurements & Settings

Fig. 2-19 Display Menu

The display menu allows the display to be changed between split and full screen display
for IQ measurement results. Note that for frequency sweep measurement results
(Spectrum Mask and Spectrum ACPR) the display is always full screen.

The active screen can be selected by pressing the SCREEN A/SCREEN B hotkey. A
screen needs to be made active in order to control the markers it displays.

IIn full screen mode the SCREEN A/SCREEN B hotkey also toggles which screen is
displayed.

1300.6789.42 2.33 E-3

R&S FSP-K90 Measurements in Detail

g

=



3 Measurements in Detail

This section provides a more detailed explanation of the measurements provided by R&S FSP-K90 and
provides help for using R&S FSP-K90 to measure the characteristics of specific types of DUT.

Abbreviations

kla,

EVM error vector magnitude of subcarrier k

k

EVM

error vector magnitude of current packet

symbol at symbol l of subcarrier k

signal gain

f frequency deviation between Tx and Rx

l symbol index

]_,1[ Symbolsnofl

symbolsnof _ number of symbols of payload

H channel transfer function of subcarrier k

k

k

K modulation dependant normalization factor

mod

channel index ]32,31[=k

relative clock error of reference oscillator

klr,

subcarrier k of symbol l

Signal Processing of the IEEE802.11a application

This description gives a rough view of the IEEE802.11a application signal processing. Details are
disregarded in order to get a concept overview.

A diagram of the interesting blocks is shown in figure 1. First the RF signal is downconverted to the IF

frequency

After bandpass filtering, the signal is sampled by an Analog to Digital Converter (ADC) at a sampling

rate of

=

f 80 MHz which is a multiple of the Nyquist rate (20 MHz). The subsequent digital downconverter

2s

shifts the IF signal to the complex base band. In the next step the base band signal is filtered by a FIR

filter. To get an idea, the rough transfer function is plotted in the figure. This filter fulfills two tasks: first it

suppresses the IF image frequency, secondly it attenuates the aliasing frequency bands caused by the

subsequent downsampling. After filtering, the sequence is sampled down by the factor of 4. Thus the

sampling rate of the downsampled sequence

the digital part is implemented in an ASIC.

=

f 20.4 MHz. The resulting IF signal )(tr

IF

=

f 81.6 MHz. This digital sequence is resampled to the new sampling frequency of

1s

)(ir is the Nyquist rate of =

is shown on the left-hand side of the figure.

IF

f 20 MHz. Up to this point

3s

1300.6789.42 3.1 E-3

Measurements in Detail R&S FSP-K90

=



-j

·kT

IF

S2

e

rIF(t)

~
~
~

DC

A

fs1= 81.6 MHz

Resampler

f

= 80 MHz

s2

FIR

16.4 MHz



H

( f )

IR

F

f

0

r(i)



4

f

=20MHz

3

s

packet search :

1.coarse timing

2.fine timing

LS

timing



H

f

k

payload
window

coarse

(LS)

frequency

compensation

F

FT

N = 64

ilot

p
table

r

,k

l

a

l,k

stimation

e

of

gain, frequency, time

g

l





d

f

,

est

r

l



l

user defined

compensation

ull

f

compensation

r'

l,k

estimate

data symbols

data

a

l,k

channel

estimation

pilots + data

r''

1

l,k

H

k

measurement

of

arameters

PL)

(

H

k

H

k

p

Fig. 3-1

In the lower part of the figure the subsequent digital signal processing is shown. In the first block the

packet search

coarse timing

on cyclic repetition within the LS after

[1]-[3]. Furthermore a coarse estimate

metric in [6]. This can easily be understood because the phase of

frequency offset. As the frequency deviation

is performed. This block detects the Long Symbol (LS) and recovers the timing. The

is detected first. This search is implemented in the time domain. The algorithm is based

64

N samples. Numerous treatises exist on this subject, e.g.

1

fˆ

of the Rx-Tx frequency offset f is derived from the

coarse

*

)()(

Nirir + is determined by the

f can exceed half a bin (distance between neighbor sub-

carriers) the preceding Short Symbol (SS) is also analyzed in order to detect the ambiguity.

After the coarse timing calculation the time estimate is improved by the fine timing calculation

)LS(

achieved by first estimating the coarse frequency response

ˆ

H , with ]26,26[=k denoting the

k

. This is

channel index of the occupied sub-carriers. First the FFT of the LS is calculated. After the FFT

calculation the known symbol information of the LS sub-carriers is removed by dividing by the symbols.

ˆ

H

The result is a coarse estimate

of the channel transfer function. In the next step the complex

k

channel impulse response is computed by an IFFT. Next the energy of the windowed impulse response

(the window size is equal to the guard period) is calculated for every trial time. Afterwards the trail time

of the maximum energy is detected. This trial time is used to adjust the timing.

Now the position of the LS is known and the starting point of the useful part of the first payload symbol

can be derived. In the next block this calculated time instant is used to position the payload window

.

Only the payload part is windowed. This is sufficient because the payload is the only subject of the

subsequent measurements.

In the next block the windowed sequence is compensated

by the coarse frequency estimate

ˆ

f

 .

coarse

This is necessary because otherwise inter channel interference (ICI) would occur in the frequency

domain.

1

In this paper the hat generally describes an estimate. Example: xˆis the estimate of x.

1300.6789.42 3.2 E-3

R&S FSP-K90 Measurements in Detail

(

)

=

=

The transition to the frequency domain is achieved by an FFT

symbol-wise for every of the

y

b

ith

w

klr,

• the symbol index

symbolsnof _ symbols of the payload. The calculated FFTs are described

]_,1[ symbolsnofl = and

of length 64. The FFT is performed

• the channel index ]32,31[ !=k .

In case of an additive white Gaussian noise (AWGN) channel the FFT is described by [4], [5]

timing(

commom(

)

klklkl

+

)

phasephasej

kll

,

neHgaKr

+=

kl

,,mod,

with

• the modulation-dependant normalization factor

• the symbol kla

of sub-carrier k at symbol l ,

,

• the gain lg at the symbol l in relation to the reference gain

K ,

mod

at the long symbol (LS),

1=g

• the channel frequency response kH at the long symbol (LS),

• the common phase drift

• the phase

phase of sub-carrier k at symbol l caused by the timing drift (see below),

,kl

phase of all sub-carriers at symbol l (see below),

)timing(

• the independent Gaussian distributed noise samples

)common(

l

n

.

l

k

,

The common phase drift in equation (1) is given by

common(

)

dlTfNNphase



+= 2

lrestsl

(1)

(2)

with

• 80=sN being the number of Nyquist samples of the symbol period,

• 64

N being the number of Nyquist samples 64

•

f being the (not yet compensated) frequency deviation,

rest

•ld



being the phase jitter at the symbol l .

In general, the coarse frequency estimate

remaining frequency error

f represents the not yet compensated frequency deviation in klr

rest

fˆ (see figure 1) is not error-free. Therefore the

coarse

N of the useful part of the symbol,

.

,

Consequently the overall frequency deviation of the device under test (DUT) is calculated by

ˆ

fff +=

. Remark: The only motivation for dividing the common phase drift in equation (2)

restcoarse

into two parts is to be able to calculate the overall frequency deviation of the DUT.

d



The reason for the phase jitter

in equation (2) may be different. The nonlinear part of the phase

l

jitter may be caused by the phase noise of the DUT oscillator. Another reason for nonlinear phase jitter

may be the increase of the DUT amplifier temperature at the beginning of the burst. Please note that

besides the nonlinear part the phase jitter

caused by the not yet compensated frequency deviation

that the measurement of the phase starts at the first symbol

frequency response

H in equation (1) represents the channel at the long symbol of the preamble.

k

Consequently the not yet compensated frequency deviation

d



also contains a constant part. This constant part is

l

f . To understand this, please keep in mind

rest

1=l of the payload. In contrast the channel

f produces a phase drift between the

rest

long symbol and the first symbol of the payload. Therefore this phase drift appears as a constant value

(“DC value”) in

d



.

l

Referring to the IEEE802.11a measurement standard Chapter 17.3.9.7 “Transmit modulation accuracy

test” [6], the common phase drift

phase must be estimated and compensated from the pilots.

)common(

l

1300.6789.42 3.3 E-3

Measurements in Detail R&S FSP-K90



=

=

M



Therefore this “symbol wise phase tracking” (Tracking Phase) is activated as the default setting of the

R&S FSP-K90.

Furthermore the timing drift in equation (1) is given by

)timing(

kl

,

s

lkNNphase

=2

(3)

with

being the relative clock deviation of the reference oscillator. Normally a symbol-wise timing jitter

is negligible and thus not modelled in equation (3). There may be situations where the timing drift has to

be taken into account. This is illustrated by an example: In accordance to [6] the allowed clock deviation

of the DUT is up to

assumed. From equations (1) and (3), it results that the phase drift of the highest sub-carrier

the last symbol

=



20 ppm. Furthermore a long packet with 400_ =symbolsnof symbols is

max

26

k in

symbolsnofl _= is 93 degrees. Even in the noise-free case, this would lead to symbol

errors. The example shows that it is actually necessary to estimate and compensate the clock deviation,

which is accomplished in the next block.

Referring to the IEEE802.11a measurement standard [6], the timing drift

phase is not part of the

)timing(

,

kl

requirements. Therefore the “time tracking” (Tracking Time) is not activated as the default setting of the

R&S FSP-K90.

The time tracking option should rather be seen as a powerful analysing option.

In addition the tracking of the gain

reference gain

function

)L(ˆS

H is calculated. This makes sense since the sequence

k

channel transfer function

gain at the symbol

at the time instant of the long symbol (LS). At this time the coarse channel transfer

1

g

H before estimating the symbols. Consequently a potential change of the

k

l (caused, for example, by the increase of the DUT amplifier temperature) may lead

to symbol errors especially for a large symbol alphabet

g in equation (1) is supported for each symbol in relation to the

l

' is compensated by the coarse

)L(ˆS

klr,

of the MQAM transmission. In this case the

estimation and the subsequent compensation of the gain is useful.

Referring to the IEEE802.11a measurement standard [6], the compensation of the gain

g is not part of

l

the requirements. Therefore the “gain tracking” (Tracking Gain) is not activated as the default setting of

the R&S FSP-K90.

How can the parameters above be calculated? In this application the optimum maximum likelihood

algorithm is used. In the first estimation step the symbol-independent parameters

f and

rest

are

estimated. The symbol dependent parameters can be neglected in this step i.e. the parameters are set

1=

g and 0=

to

l

d



. Referring to equation (1) the log likelihood function

l

2

_

~

(

rest

1

eq.(1)



)~,

symbolsnof

l

=



1

k

21,7,7,21

=

ˆ

,,

()

)LS(

eHarfL

=

kklkl

)common(

~~

hasephasepj

+

2

)timing(

,

kll

with

eq.(2)

~

~

)common(

)timing(

eq.(3)



2

2

sl

~

lTfNNhasep

=

restsl

~

lkNNhasep

=



(4)

2

In this paper the tilde generally describes an estimate. Example: x~is the trial parameter of x.

1300.6789.42 3.4 E-3

R&S FSP-K90 Measurements in Detail

~

~

~

must be calculated as a function of the trial parameters

the minimum of the log likelihood function are used as estimates

nown pilot symbols

k

In the second step for every symbol

re read from a table.

a

kla,

l the log likelihood function

f~ and

est

r



. The trial parameters leading to

fˆ and

rest

ˆ



. In equation (4) the

eq.(1)

~



)

,~(

2



21,7,7,21

=

k

~

ˆ

,,

~

()

)L(

S

eHgardgL

=

klklklll

)common(

ˆ

+

h

asephasepj

2

)timing(

kll

,

with

eq.(2)

~

ˆ

is calculated as a function of the trial parameters

)common(

2

eq.(3)

)timing(

2

sl

g

and

d

l



minimum of the log likelihood function are used as estimates

ˆ

ˆ

lkNNhasep

=



. Finally, the trial parameters leading to the

l

ˆ

g

and

l

~

dlTfNNhasep

+=



lrestsl

ˆ

d



.

l

This robust algorithm works well even at low signal to noise ratios with the Cramer Rao Bound being

reached.

After estimation of the parameters, the sequence

is compensated in the compensation blocks.

klr,

In the upper analysing branch the compensation is user-defined i.e. the user determines which of the

parameters are compensated. This is useful in order to extract the influence of these parameters. The

resulting output sequence is described by

r,' .

kl

In the lower compensation branch the full compensation is always performed. This separate

compensation is necessary in order to avoid symbol errors. After the full compensation the secure

estimation of the data symbols

transfer function

)LS(

ˆ

H calculated from the LS. Usually an error free estimation of the data symbols can be assumed.

k

H must be removed. This is achieved by dividing the known coarse channel estimate

k

ˆ

a

is performed. From equation (1) it is clear that first the channel

kl

,

)PL(

In the next block a better channel estimate

using all

symbolsnof _ symbols of the payload (PL). This can be accomplished at this point because the

phase is compensated and the data symbols are known. The long observation interval of

symbols (compared to the short interval of 2 symbols for the estimation of

ˆ

H of the data and pilot sub-carriers is calculated by

k

symbolsnof _

)L(

S

ˆ

H ) leads to a nearly error-

k

free channel estimate.

In the following equalizer block

compensated sequence is described by

)L(

S

ˆ

H (from the long symbol) or the nearly error-free channel estimate

k

equalization. In case of using the improved estimate

r

' is compensated by the channel estimate. The resulting channel-

kl

,

r

'' . The user may either choose the coarse channel estimate

kl

,

)L(

S

ˆ

H a 2 dB reduction of the subsequent EVM

k

)L(

S

ˆ

H (from the payload) for

k

measurement can be expected.

)L(

S

ˆ

According to the IEEE802.11a measurement standard [6], the coarse channel estimation

H (from

k

the long symbol) has to be used for equalization. Therefore the default setting of the R&S FSP-K90 is

equalization from the coarse channel estimate derived from the long symbol.

In the last block the measurement variables

are calculated. The most important variable is the error

vector magnitude

1300.6789.42 3.5 E-3

Measurements in Detail R&S FSP-K90

Symbolsnof

k

1

Symbolsnof

_

_



l

''

=

1

2

aKrEVM =

klkl

,mod,

(5)

f the sub-carrier

o

f the current packet. Furthermore the packet error vector magnitude

k o

26

is derived by averaging the squared

1

52

EVM versus k . Finally the average error vector magnitude

k

EVMEVM

=



26

k

=

)0(

k



_

1

_

packetsnof

of all



counter

is calculated by averaging the packet

=

EVM

equivalent to the so-called “RMS average of all errors

commandment (see [6], Chapter 17.3.9.7).

2

k

acketsnof

p

=

packetsnof _

Error ” of the IEEE802.11a measurement

2

1

counterEVMEVM

)(

detected packets. This parameter is

RMS

(6)

(7)

1300.6789.42 3.6 E-3

R&S FSP-K90 Remote Control

4 Remote Control

Description of commands

This section specifies all the remote control commands specific to the R&S FSP-K90 option. Only those
commands provided for this option are specified. For details of remote control commands provided by
the host analyzer please refer to the analyzer user manual.

Notation

In the following sections, all commands implemented in the instrument are first listed in tables and then
described in detail, arranged according to the command subsystems. The notation is adapted to the
SCPI standard. The SCPI conformity information is included in the individual description of the
commands.

Table of Commands

Command: In the command column, the table provides an overview of the

commands and their hierarchical arrangement (see indentations).

Parameter: The parameter column indicates the requested parameters together with

their specified range.

Unit: The unit column indicates the basic unit of the physical parameters.

Comment: In the comment column an indication is made on:

– whether the command does not have a query form,

– whether the command has only one query form

– whether the command is implemented only with a certain option of the
instrument

Indentations The different levels of the SCPI command hierarchy are represented in

the table by means of indentations to the right. The lower the level, the
further the indentation to the right. Please note that the complete notation
of the command always includes the higher levels as well.

Example:

follows:

Individual description The individual description contains the complete notation of the

command. An example for each command, the *RST value and the SCPI
information are included as well.

SENSe:FREQuency:CENTer

SENSe

:FREQuency

:CENTer

is represented in the table as

first level
second level
third level

Upper/lower case notation Upper/lower case letters are used to mark the long or short form of the

key words of a command in the description (see Section 3.5.2). The
instrument itself does not distinguish between upper and lower case
letters.

1300.6798.42 4.1 E-2

Remote Control R&S FSP-K90

Special characters | A selection of key words with an identical effect exists for several

ommands. These keywords are indicated in the same line; they are

c
separated by a vertical stroke. Only one of these keywords needs to be
included in the header of the command. The effect of the command is
independent of which of the keywords is used.

Example:

The two following commands with identical meaning can be created.
They set the frequency of the fixed frequency signal to 1kHz:

SENSe:FREQuency:CW 1E3 = SENSe:FREQuency:FIXed 1E3

A vertical stroke in parameter indications marks alternative possibilities in
the sense of "or". The effect of the command is different, depending on
which parameter is used.

Example: Selection of the parameters for the command

DISPlay:FORMat FULL | SPLit

If parameter FULL is selected, full screen is displayed, in the case of
SPLit, split screen is displayed.

SENSe:FREQuency:CW|:FIXed

[ ] Key words in square brackets can be omitted when composing the

header (cf. Section 3.5.2, Optional Keywords). The full command length
must be accepted by the instrument for reasons of compatibility with the
SCPI standards. Parameters in square brackets can be incorporated
optionally in the command or omitted as well.

{ } Parameters in braces can be incorporated optionally in the command,

either not at all, once or several times.

Description of parameters Due to the standardisation, the parameter section of SCPI commands

consists always of the same syntactical elements. SCPI has therefore
specified a series of definitions, which are used in the tables of
commands. In the tables, these established definitions are indicated in
angled brackets (<...>) and will be briefly explained in the following (see
also Section 3.5.5, "Parameters").

<Boolean> This keyword refers to parameters which can adopt two states, "on" and

"off". The "off" state may either be indicated by the keyword OFF or by
the numeric value 0, the "on" state is indicated by ON or any numeric
value other than zero. Parameter queries are always returned the
numeric value 0 or 1.

<numeric_value>

1300.6789.42 4.2 E-3

R&S FSP-K90 Remote Control

<num> These keywords mark parameters which may be entered as numeric

alues or be set using specific keywords (character data).The following

v
keywords given below are permitted:

MINimum This keyword sets the parameter to the smallest
possible value.

AXimum This keyword sets the parameter to the largest

M
possible value.

DEFault This keyword is used to reset the parameter to its
default value.

UP This keyword increments the parameter value.

DOWN This keyword decrements the parameter value.

The numeric values associated to MAXimum/MINimum/DEFault can be
queried by adding the corresponding keywords to the command. They
must be entered following the quotation mark.

Example: SENSe:FREQuency:CENTer? MAXimum returns the
maximum possible numeric value of the center
frequency as result.

<arbitrary block program data>

This keyword is provided for commands the parameters of which consist
of a binary data block.

1300.6798.42 4.3 E-2

Remote Control R&S FSP-K90

ABORt

SCPI Commands

ABORt Subsystem

The ABORt subsystem provide a mechanism by which running measurements can be aborted.

COMMAND PARAMETERS UNIT COMMENT

ABORt

This causes the current measurement, which is being performed, to be aborted.

Example: “ABOR” The R&S FSP-K90 option will attempt to abort the current

active measurement.

Characteristics: *RST value: -

SCPI: Conforming

CALCulate: Subsystem

CALCulate:BURSt Subsystem

COMMAND PARAMETERS UNIT COMMENT

:CALCulate<1|2>

:BURSt

[:IMMediate]

CALCulate<1|2>:BURSt[:IMMediate]

This command forces the IQ measurement results to be recalculated according to the current
settings.

Example: "CALC:BURS" Forces an update of the IQ results.

Characteristics: *RST value: -

SCPI: Device specific

- -

1300.6789.42 4.4 E-3

R&S FSP-K90 Remote Control

CALCulate:LIMit Subsystem

COMMAND PARAMETERS UNIT COMMENT

:CALCulate<1|2>
:LIMit<1 to 8>
:BURSt
:ALL

:RESult?
:FERRor
[:AVERage]
:RESult?
:MAXimum
:RESult?

:SYMBolerror
[:AVERage]
:RESult?
:MAXimum
:RESult?
:IQOFfset
[:AVERage]
:RESult?
:MAXimum
:RESult?
:EVM
:ALL
[:AVERage]
:RESult?
:MAXimum
:RESult?
:DATA
[:AVERage]
:RESult?
:MAXimum
:RESult?
:PILot
[:AVERage]
:RESult?
:MAXimum
:RESult?
:SPECtrum
:Mask
:CHECk
:X?
:Y?
FAIL?

<numeric_value>

--

<numeric_value>

-­<numeric_value>

<numeric_value>

-­<numeric_value>

--

<numeric_value>

-­<numeric_value>

--

<numeric_value>

-­<numeric_value>

--

<numeric_value>

-­<numeric_value>

--

<numeric_value>

-­<numeric_value>

--

--

--

--

S

S

S

S

HZ

HZ

DB

DB

DB|PCT

DB|PCT

DB|PCT

DB|PCT

HZ
DBM

query only

query only

query only

query only

query only

query only

query only

query only

query only

query only

query only

query only

query only

query only
query only
query only

1300.6798.42 4.5 E-2

Remote Control R&S FSP-K90

CALCulate<1|2>:LIMit<1>:BURSt:ALL

This command sets or returns all the limit values. The results are input or output as a list of values
separated by ’,’ in the following (ASCII) format:

average frequency error>, <max frequency error>,

<
<average symbol error>, <max symbol error>,
<average IQ offset>, <maximum IQ offset>,
<average EVM all bursts>, <max EVM all bursts>,
<average EVM data carriers >, <max EVM data carriers >
<average EVM pilots >, <max EVM pilots >

Note that the units for the EVM results are specified with the UNITS:EVM command

Example: “CALC:LIM:BURS:ALL?” All limit values are returned

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:ALL:RESULT

This command returns all the limit results (PASSED | FAILED). The results are output as a list of
result strings separated by ’,’ in the following (ASCII) format:

<average frequency error>, <max frequency error>,
<average symbol error>, <max symbol error>,
<average IQ offset>, <maximum IQ offset>,
<average EVM all bursts>, <max EVM all bursts>,
<average EVM data carriers >, <max EVM data carriers >
<average EVM pilots >, <max EVM pilots >

Note that the units for the EVM results are specified with the UNITS:EVM command

Example: “CALC:LIM:BURS:ALL:RES?” All limit values are returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:FERRor[:AVERage]

This command sets the average frequency error limit in Hertz

Example: “CALC:LIM:BURS:FERR 10000” The average frequency error limit is
set to 10000 Hz.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:FERRor[:AVERage]:RESult

This command returns the average frequency error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:FERR:RES?” Average frequency error limit result is
returned.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6789.42 4.6 E-3

R&S FSP-K90 Remote Control

CALCulate<1|2>:LIMit<1>:BURSt:FERRor:MAXimum

This command sets the maximum frequency error limit in Hertz

xample: “CALC:LIM:BURS:FERR:MAX?” Maximum frequency error limit is

E
returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:FERRor:MAXimum:RESult

This command returns the maximum frequency error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:FERR:MAX:RES?” Maximum frequency error limit result
is returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:SYMBolerror[:AVERage]

This command sets the average symbol error limit in Hertz

Example: “CALC:LIM:BURS:SYMB 10000” The average symbol error limit is set

to 10 kHz.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:SYMBolerror[:AVERage]:RESult

This command returns the average symbol error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:SYMB:RES?” Average symbol error limit result is returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt: SYMBolerror:MAXimum

This command sets the maximum symbol error limit in Hertz.

Example: “CALC:LIM:BURS:SYMB:MAX?” Maximum symbol error limit is

returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:SYMBolerror:MAXimum:RESult

This command returns the maximum symbol error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:SYMB:MAX:RES?” Maximum symbol error limit result is
returned.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6798.42 4.7 E-2

Remote Control R&S FSP-K90

CALCulate<1|2>:LIMit<1>:BURSt:IQOFfset[:AVERage]

his command sets the average IQ Offset error limit in dB

T

xample: “CALC:LIM:BURS:IQOF –10.0” Average IQ Offset error limit is set

E
to –10.0 dB.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:IQOFfset[:AVERage]:RESult

This command returns the average IQ Offset error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:IQOF:RES?” Average IQ Offset error limit result is
returned.
Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:IQOFfset:MAXimum

This command sets the maximum IQ Offset error limit in dB

Example: “CALC:LIM:BURS:IQOF:MAX 15.0” Maximum IQ Offset error limit is
to –15.0 dB.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:IQOFfset:MAXimum:RESult

This command returns the maximum IQ Offset error limit result (PASSED | FAILED)

Example: “CALC:LIM:BURS:IQOF:MAX:RES:?” Maximum IQ Offset error limit result is
returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:ALL[:AVERage]

This command sets the average Error Vector Magnitude Limit in dB. This is a combined figure that
represents the pilot, data and the free carrier.

Example: “CALC:LIM:BURS:EVM:ALL –25.0” Average EVM for all carrier limit is set
to –25.0 dB.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6789.42 4.8 E-3

R&S FSP-K90 Remote Control

CALCulate<1|2>:LIMit<1>:BURSt:EVM:ALL[:AVERage]:RESult

This command returns the average Error Vector Magnitude Limit result (PASSED | FAILED). This is
a combined figure that represents the pilot, data and the free carrier.

Example: “CALC:LIM:BURS:EVM:ALL:RES?” Average EVM for all carrier limit result
is returned.

haracteristics: *RST value: -

C

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:ALL:MAXimum

This command sets the maximum Error Vector Magnitude Limit in dB. This is a combined figure that
represents the pilot, data and the free carrier.

Example: “CALC:LIM:BURS:EVM:ALL:MAX?” Maximum EVM for all carrier limit is
returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:ALL:MAXimum:RESult

This command returns the maximum Error Vector Magnitude Limit result (PASSED | FAILED). This
is a combined figure that represents the pilot, data and the free carrier.

Example: “CALC:LIM:BURS:EVM:ALL:MAX:RES?” Maximum EVM for all carrier
limit result is returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:DATA[:AVERage]

This command sets the average Error Vector Magnitude limit summary for the data carrier in dB.

Example: “CALC:LIM:BURS:EVM:DATA –30.0” Average EVM for data carrier
limit is set to –30.0 dB.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:DATA[:AVERage]:RESult

This command returns the average Error Vector Magnitude limit result summary (PASSED |
FAILED) for the data carrier in dB.

Example: “CALC:LIM:BURS:EVM:DATA:RES?” Average EVM for data carrier limit
result is returned.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6798.42 4.9 E-2

Remote Control R&S FSP-K90

CALCulate<1|2>:LIMit<1>:BURSt:EVM:DATA:MAXimum

This command sets the maximum Error Vector Magnitude limit summary for the data carrier in dB.

xample: “CALC:LIM:BURS:EVM:DATA:MAX?” Maximum EVM for data burst limit is

E

returned.
Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:DATA:MAXimum:RESult

This command returns the maximum Error Vector Magnitude limit result summary (PASSED |
FAILED) for the data carrier in dB.

Example: “CALC:LIM:BURS:EVM:DATA:MAX:RES?” Maximum EVM for data
carrier limit result is returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:PILot[:AVERage]

This command sets the average Error Vector Magnitude limit summary for the pilot carriers in dB.

Example: “CALC:LIM:BURS:EVM:PIL –8.0” Average EVM for pilot carrier limit is
set to –8.0 dB.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:PILot[:AVERage]:RESult

This command returns the average Error Vector Magnitude limit result summary (PASSED |
FAILED) for the pilot carriers in dB.

Example: “CALC:LIM:BURS:EVM:PIL:RES?” Average EVM for pilot carrier limit
result is returned.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:BURSt:EVM:PILot:MAXimum

This command sets the maximum Error Vector Magnitude limit summary for the pilot carriers in dB.

Example: “CALC:LIM:BURS:EVM:PIL:MAX?” Maximum EVM for pilot carrier limit is
returned.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6789.42 4.10 E-3

R&S FSP-K90 Remote Control

CALCulate<1|2>:LIMit<1>:BURSt:EVM:PILot:MAXimum:RESult

This command returns the maximum Error Vector Magnitude limit result summary (PASSED |
FAILED) for the pilot carriers in dB.

Example: “CALC:LIM:BURS:EVM:PIL:MAX:RES?” Maximum EVM for pilot carrier
limit result is returned.

haracteristics: *RST value: -

C

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:SPECtrum:MASK:CHECk:X

This command returns the X-value at the maximum overstepping of the spectrum mask limits.

Example: “CALC:LIM:SPEC:MASK:CHEC:X? “ Returns the frequency at the
maximum overstepping.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:SPECtrum:MASK:CHECk:Y

This command returns the Y-value at the maximum overstepping of the spectrum mask limits

Example: “CALC:LIM:SPEC:MASK:CHEC:Y? “ Returns the power at the maximum
overstepping.

Characteristics: *RST value: -

SCPI: Device Specific

CALCulate<1|2>:LIMit<1>:FAIL?

This command queries the result of the limit check of the limit line indicated in the selected
measurement window. It should be noted that a complete sweep must have been performed for
obtaining a valid result. A synchronization with *OPC, *OPC? or *WAI should therefore be provided.
The result of the limit check responds with 0 for PASS and 1 for FAIL. Note that no limit lines are
displayed in screen A and as such all CALCulate1:LIMit:FAIL? Command will return 0. The index
for LIMit for specific limit lines is as follows:

Index Limit

1 to 2 These indexes are not used

3 ETSI Spectrum Mask limit line

4 to 5 These indexes are not used

6 IEEE Spectrum Mask limit line

Example: “
"

INIT;*WAI
CALC2:LIM1:FAIL?

“ Starts a new sweep and waits for its end.

“ Queries the result of the check for limit
line 1 in screen B.
Characteristics: *RST value: -

SCPI: Device Specific

1300.6798.42 4.11 E-2

Remote Control R&S FSP-K90

CALCulate:MARKer Subsystem

he CALCulate:MARKer subsystem checks the marker functions in the R&S FSP-K90 option.

T

CALCulate 1: Screen A
CALCulate 2: Screen B

Note: Currently there is only 1 marker is available and it is always on.

COMMAND PARAMETERS UNIT COMMENT

CALCulate<1|2>:

MARKer<1>

:TRACe
:X
:Y
:SYMBol
:CARRier
: AOFF
[:STATe]

<numeric_value>
<numeric_value>
<numeric_value>
<numeric_value>
<numeric_value>

<Boolean>

CALCulate<1|2>:MARKer<1>:TRACe

HZ | S | DB
PCT | DB

This command assigns the selected marker to the indicated measurement curve in the selected
measurement window.
This command is only available for the following result displays:
Constellation versus Carrier
EVM versus Symbol
PVT Full Burst
PVT Rising / Falling

Example: "CALC2:MARK:TRAC 2" Assigns marker 1 in screen B to trace 2.

"CALC2:MARK:TRAC 5" Assigns marker 1 in screen B to trace 5.

Characteristics: *RST value: 1

SCPI: Device Specific

CALCulate<1|2>:MARKer<1>:X

This command positions the selected marker to the indicated inphase (constellation Vs symbol),
frequency (spectrum FFT, spectrum mask), time (magnitude capture buffer, auto level, PVT full
burst, PVT rising / falling), power (CCDF), sub-carrier (constellation Vs carrier, EVM Vs carrier,
spectrum flatness) or symbol (EVM Vs symbol) in the selected measurement window.
This command is query only for the following result displays:
Constellation Vs Symbol
Constellation Vs Carrier

Example: "CALC:MARK:X 2ms" Positions marker 1 in screen A to time 2 ms.

Characteristics: *RST value: -

SCPI: Device Specific

1300.6789.42 4.12 E-3