Rohde & Schwarz M3SR Series 4100 Service Manual

Service Manual (Intermediate Level)

ICN-S4100-A-E11100-R-D0894-00001-A-01-1

Radio Communication Systems

Division

R&S®M3SR Series 4100

150 W HF Transceivers

i 6124.9007.82.01

©

2007

Copying of this document as well as any other utilization and communication of its content
are only admissible with the permission of the originator or other authorized persons.

Any disregard will be prosecuted and is subject to restitution (UrhG, UWG, BGB). For the case
a patent is issued or the design is officially registered all rights are reserved.

®

R&S

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

All other product names are trademarks of their respective owners.

ROHDE & SCHWARZ GmbH & Co. KG

Mühldorfstr. 15

D-81671 München

www.rohde-schwarz.com

Printed in the Federal Republic of Germany

Subject to change

Data without tolerances: order of magnitude only

0207

6124.9007.82.01 ii

DIN EN ISO 9001 : 2000
DIN EN 9100 : 2003
DIN EN ISO 14001 : 1996

DQS REG. NO 001954 QM/ST UM

Certified Quality System

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 14001:1996

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 14001:1996

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 14001:1996

QUALITÄTSZERTIFIKAT CERTIFICATE OF QUALITY CERTIFICAT DE QUALITÉ

1171.0200.11-01.00

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

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

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 Central European Time (CET)

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

Eastern Standard Time (EST)

1171.0200.22-01.00

E-mail [e-mail]

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

Safety instructions for

J

W

handling parts made from

beryllium oxide ceramics

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  (

Radio Communication Systems Division

Documentation Dept.
Mühldorfstr. 15

D-81671 München

Fax [phone]

E V A L U A T I O N O F M A N U A L S

here: Service Manual, Id. No. 6124.9007.82.01

R&S M3SR Series 4100 150 W HF Transceivers

Dear Sirs,

we constantly try to improve our technical manuals, so that you, our customer gets the
best possible benefit from them.

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0207 6124.9007.82.01 - 001 please turn over

E V A L U A T I O N O F M A N U A L S

Service Manual, Id. No. 6124.9007.82.01
R&S M3SR Series 4100 150 W HF Transceivers

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Further Comments and Suggestions for Improvement:

Date / Signature / Department

0207 6124.9007.82.01 - 002

Notices R&S M3SR Series 4100 HF Transceivers

Definitions

Check In appropriate measurements by means of the specified test

equipment, proper functioning of a unit or module is estab-

lished.

Discolouration Components such as connectors and printed circuit boards are

examined if they have changed colour due to temperature ef-

fects and thus differ widely from their normal condition.

Disconnect Pull off connector.

Examine In case of trouble the unit / module or components such as e.g.

connectors, are to be thoroughly checked for obvious mechani-

cal damage.

Functional check This means that components / modules / units are checked for

proper functioning while installed.

Hazardous voltages Voltages > 30 V

Make sure Ascertain whether all mentioned requirements are met or all

measures are taken to establish the required condition.

Open Access is to be gained to the unit / module by observing the

given instructions and safety precautions.

Perfect condition This means that a component / module / unit has to be in a

state which does not give cause to complaints.

Replacement In case of trouble the replacement of modules is carried out in

order to localize and eliminate the fault.

Replace Components / modules / units which - due to damage and / or

other defects - no longer meet the respective requirements or

components / modules / units which during troubleshooting

were identified as the cause of fault, are to be replaced.

Visual examination This is a visual inspection of the outer appearance and com-

pleteness of a component / module / unit without manual inter-

ference by the examiner. This does not include the necessary

preparations and finishing work such as opening and closing of

covers or similar.

or 50 Vpp (AC) or 50 V (DC)

rms

N.1 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Notices

Notices

The three different notices used in this documentation have the following meaning:

WARNING

This heading is used to indicate that inaccurate observance or nonobservance of in-

structions or methods can cause injury or even fatal accidents or during an operation

described hazardous material can be set free in the unit or system.

C A U T I O N

This heading is used to indicate that inaccurate observance or nonobservance of instructions

or methods can cause damage to the unit.

Note:

This heading is used to draw the reader’s attention to a particular fact.

6124.9007.82.01 N.2

Notices R&S M3SR Series 4100 HF Transceivers

User Information

Purpose of the Documentation

This documentation provides all information the service staff need to perform intermediate level repairs.

It contains the necessary function description as well as information on tests, troubleshooting and re­placement of modules. Diagrams and lists can be found in the Appendix.

We recommend to keep complete spare units / modules in store.

N.3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Notices

6124.9007.82.01 N.4

List of Abbreviations R&S M3SR Series 4100 HF Transceivers

Abbreviations

A ampere

A R&S designator for modules, e.g. A1

A1A amplitude modulation (Morse telegraphy)

A3E amplitude modulation (two sidebands)

AC alternating current

ACK acknowledge

ADC analog digital converter

AF audio frequency

AFU audio frequency unit

AGC automatic gain control

ALC automatic level control

AM amplitude modulation

AMBE advanced multiband excitation

ANT antenna

app application software/appendix

ATTEN attenuator (menu step on MMI)

ATU antenna tuning unit

AUDIO R&S designator for audio connector

BAT battery (menu step on MMI)

BCD binary coded decimal

BIT built-in test

BNC bayonet nut connector

BITE built-in test equipment

BP bandpass

BSP board support package

BW bandwidth

iii 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers List of Abbreviations

CBIT continuous built-in test

CCFL cold cathode fluorescent lamp

CM continuous monitoring

CMOS complementary metal oxide semiconductor

Codec coder / decoder

CPLD complex programmable logic device

CPU central processing unit

CTRL control

CTS clear to send

CW continuous wave

CURR current

D depth

dB decibel

dBm decibel, absolute level, relative to 1 mW

DC direct current

DDS direct digital synthesizer

DISC discrete bus

DISP display

DPP data preprocessor

DPS data / parity / stop (menu step on MMI)

DR data rate (menu step on MMI)

DSC Digital Selective Calling

DSP digital signal processing/processor

DUT device under test

EBIT enhanced built-in test

EEPROM erasable programable read only memory

EPM electronic protection measures

ESSI enhanced serial synchronous interface

6124.9007.82.01 iv

List of Abbreviations R&S M3SR Series 4100 HF Transceivers

F/f frequency

F1D frequency modulation (FSK - frequency shift keying, modem operation)

F3E frequency modulation (voice communication)

FEC forward error correction

FF fixed frequency

FILL Fillgun

Fig. figure

FP front panel

FPGA field programmable gate array

FRAM ferroelectric RAM

FSK frequency shift keying

GND ground

GPS global positioning system

H3E amplitude modulation (one sideband)

hex hexagonal

HF high frequency

HP highpass

HU height unit

Hz Hertz

I input

IBIT initiated built-in test

IBP internal bandpass

IF intermediate frequency

IIC inter integrated circuit

INT internal

IQ inphase/quadrature (modulation)

IrDA infrared data association/access

ISB independent sideband

v 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers List of Abbreviations

J3E amplitude modulation (one sideband, no carrier)

JTAG Joint Test Action Group

kHz kilohertz

KDD key distribution device

LAN local area network

LCD liquid crystal display

LDO low drop out

LED light-emitting diode

LEV level (menu step on MMI)

LO local oscillator

LP lowpass

LSB lower side band

M3SR multiband multimode multirole surface radio

MHz megahertz

MIC microphone

MII media independant interface

MMBE mixed multiband excitation

MMI man-machine interface

Mod model

MOS metal oxide semiconductor

MOSFET metal oxide semiconductor field-effect transistor

ms millisecond

NMEA National Marine Electronics Association

NTC negative temperature coefficient

OP operation (menu step on MMI)

6124.9007.82.01 vi

List of Abbreviations R&S M3SR Series 4100 HF Transceivers

P power

PA power amplifier

PBIT power-on built-in test

PC personal computer

PEP peak envelope power

PLL phase-locked loop

ppm parts per million

pps pulses per second

PROM programmable read only memory

PS power supply

PTT push to talk

PWR power (menu step on MMI)

R resistor, e.g. R9

R&S® Rohde & Schwarz

RAM random access memory

RC radio controller

RCB radio control bus

RDB radio data bus

REF reference

RF radio frequency

ROM read only memory

RFU radio frequency unit

RS 232 serial interface standard

RS 422 interface standard

RS 485 serial interface standard

RSSI receive signal strength indicator (menu step on MMI)

RTC real time clock

RTS request to send

RX, Rx receive

vii 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers List of Abbreviations

SDRAM synchronous dynamic random access memory

SECOM-H special EPM procedure for HF

SEL select (menu step on MMI)

SINAD signal-to-noise ratio and distortion

SRAM static random access memory

SSB single sideband modulation

SUB subtone (menu step on MMI)

TDM time division multiplex

TFT thin film transistor

TSFS temperature sensing

TX, Tx transmit, transmitter

USB upper sideband/universal serial bus

VBATT battery voltage

VCO voltage controlled oscillator

VDC volt direct current

V/D UNCP voice/data unciphered

VREF voltage (reference value)

VRMS voltage (root mean square value)

VSFS drain source voltage sensing signal

VSWR voltage standing wave ratio (menu step on MMI)

W

X R&S designator for connectors, e.g. X1

Y

Z

6124.9007.82.01 viii

R&S M3SR Series 4100 HF Transceivers

Contents

1 Description........................................................................................................1.1

1.1 Introduction.....................................................................................................................1.1

1.2 Construction ...................................................................................................................1.2

1.3 Function..........................................................................................................................1.4

1.3.1 Function of the R&S M3SR Series 4100 150 W HF Transceiver ...................................1.4

1.3.2 Function of the Modules .................................................................................................1.6

1.3.2.1 Digital Selector - Function ..............................................................................................1.7

1.3.2.2 Synthesizer - Function..................................................................................................1.10

1.3.2.3 Frontend - Function......................................................................................................1.13

1.3.2.4 Radio Controller - Function ..........................................................................................1.15

1.3.2.5 Power Amplifier - Function ...........................................................................................1.18

1.3.2.6 Comfort Control Unit (Option) - Function......................................................................1.21

1.3.2.7 Interface Module - Function..........................................................................................1.23

1.3.2.8 Front Panel - Function..................................................................................................1.24

1.3.2.9 Motherboard - Function................................................................................................1.27

1.3.2.10 Antenna Interface - Function ........................................................................................1.31

1.3.2.11 NMEA Interface (Option) - Function .............................................................................1.32

2 Working Modes and Functions .......................................................................2.1

2.1 General...........................................................................................................................2.1

2.2 Voice Communication ....................................................................................................2.1

2.3 Data Communication......................................................................................................2.3

2.4 Radio Built-in Test..........................................................................................................2.3

2.5 Radio Control .................................................................................................................2.4

2.6 Cable Connections.........................................................................................................2.5

2.6.1 Rear Cabling ..................................................................................................................2.5

2.6.2 Front Cabling..................................................................................................................2.6

3 Test of Equipment Functions ..........................................................................3.1

3.1 Test Equipment and Tools .............................................................................................3.1

3.2 Function Test with Built-in Tests ....................................................................................3.3

3.3 Test of Specification.......................................................................................................3.5

4 Troubleshooting ...............................................................................................4.1

4.1 Visual Inspection ............................................................................................................4.1

4.2 Troubleshooting..............................................................................................................4.1

4.2.1 Troubleshooting with Built-in Tests Results ...................................................................4.1

4.2.2 Troubleshooting after Testing the Specification .............................................................4.6

4.2.3 Meaning of LED Indications on the Synthesizer.............................................................4.8

5 Replacement of Modules .................................................................................5.1

5.1 Disassembly ...................................................................................................................5.1

5.1.1 General...........................................................................................................................5.1

5.1.2 Disassembling the R&S M3SR Series 4100 150 W HF Transceiver .............................5.2

5.2 Assembly........................................................................................................................5.6

5.3 Digital Selector - Removal and Installation.....................................................................5.7

5.3.1 Removal of FK 41x0 Digital Selector..............................................................................5.7

5.3.2 Installation of FK 41x0 Digital Selector...........................................................................5.8

5.4 Synthesizer - Removal and Installation ..........................................................................5.9

5.4.1 Removal of Synthesizer (A2)..........................................................................................5.9

1 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Contents

5.4.2 Installation of Synthesizer (A2).....................................................................................5.10

5.5 Frontend - Removal and Installation ............................................................................5.11

5.5.1 Removal of Frontend (A1) ............................................................................................5.11

5.5.2 Installation of Frontend (A1) .........................................................................................5.12

5.6 Radio Controller - Removal and Installation.................................................................5.13

5.6.1 Removal of Radio Controller (A60) ..............................................................................5.13

5.6.2 Installation of Radio Controller (A60) ...........................................................................5.14

5.7 Power Amplifier - Removal and Installation..................................................................5.15

5.7.1 Removal of Power Amplifier (A30) ...............................................................................5.15

5.7.2 Installation of Power Amplifier (A30) ............................................................................5.17

5.8 R&S GB 4000C - Removal and Installation..................................................................5.18

5.8.1 Removal of R&S GB 4000C Comfort Control Unit .......................................................5.18

5.8.2 Installation of R&S GB 4000C Comfort Control Unit ....................................................5.19

5.9 Interface Module - Removal and Installation................................................................5.20

5.9.1 Removal of Interface Module .......................................................................................5.20

5.9.2 Installation of Interface Module ....................................................................................5.21

5.10 Front Panel - Removal and Installation ........................................................................5.22

5.10.1 Removal of Front Panel (A10) ......................................................................................5.22

5.10.2 Installation of Front Panel (A10)...................................................................................5.23

5.11 Motherboard - Removal and Installation ......................................................................5.24

5.11.1 Removal of the Motherboard ........................................................................................5.24

5.11.2 Installation of the Motherboard .....................................................................................5.26

5.12 Antenna Interface - Removal and Installation ..............................................................5.27

5.12.1 Removal of the Antenna Interface................................................................................5.27

5.12.2 Installation of the Antenna Interface.............................................................................5.27

5.13 Fans - Removal and Installation...................................................................................5.28

5.13.1 Removal of the Fans ....................................................................................................5.28

5.13.2 Installation of the Fans .................................................................................................5.28

5.14 NMEA Interface - Removal and Installation .................................................................5.29

5.14.1 Removal of the R&S GS 4102 NMEA Interface ...........................................................5.29

5.14.2 Installation of the R&S GS 4102 NMEA Interface ........................................................5.29

5.15 Backup Battery - Removal and Installation ..................................................................5.30

5.15.1 Removal of the Backup Battery ....................................................................................5.30

5.15.2 Installation of the Backup Battery.................................................................................5.31

6 System / Equipment Configuration.................................................................6.1

6.1 General...........................................................................................................................6.1

6.2 Software Update.............................................................................................................6.1

6.3 Option Keys....................................................................................................................6.1

A1 Appendix ........................................................................................................ A1.1

A1.1 Spare Parts .................................................................................................................A1.1

A1.2 Drawings ..................................................................................................................... A1.3

6124.9007.82.01 2

R&S M3SR Series 4100 HF Transceivers

Figures

Fig. 1.1 R&S M3SR Series 4100 150 W HF Transceiver with Optional R&S GB 4000C

Comfort Control Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1

Fig. 1.2 View of R&S M3SR Series 4100 HF Transceiver without Cover (Example) . . . . . . . . .1.3

Fig. 1.3 Digital Selector, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.9

Fig. 1.4 Synthesizer, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.12

Fig. 1.5 Frontend, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.14

Fig. 1.6 Radio Controller, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.17

Fig. 1.7 Power Amplifier, Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.20

Fig. 1.8 Control Unit R&S GB4000C, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.22

Fig. 1.9 Interface Module, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.23

Fig. 1.10 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.25

Fig. 1.11 Front Panel, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.26

Fig. 1.12 Motherboard, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.30

Fig. 1.13 Antenna Interface, Mod. 02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.31

Fig. 1.14 Antenna Interface, Mod. 03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.31

Fig. 1.15 R&S GS 4102 NMEA Interface, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.33

Fig. 2.1 GO LEDs on Radio Front Panel and on Control Unit. . . . . . . . . . . . . . . . . . . . . . . . . . .2.4

Fig. 2.2 Radio with Built-In Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4

Fig. 2.3 Rear Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5

Fig. 2.4 Front Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.6

Fig. 3.1 Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.16

Fig. 5.1 Opening the R&S M3SR Series 4100 HF Transceiver (Top). . . . . . . . . . . . . . . . . . . . .5.3

Fig. 5.2 Top View of R&S M3SR Series 4100 without Cover (Example) . . . . . . . . . . . . . . . . . .5.4

Fig. 5.3 Pull-out Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5

Fig. 5.4 Removing the FK 41x0 Digital Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.7

Fig. 5.5 Removing the Synthesizer (A2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.9

Fig. 5.6 Removing the Frontend (A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.12

Fig. 5.7 Removing the Radio Controller (A60) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.14

Fig. 5.8 Undoing Screws at the Rear of Power Amplifier (A30) . . . . . . . . . . . . . . . . . . . . . . . .5.16

Fig. 5.9 Disconnecting Cables at the Radio Controller (A60) . . . . . . . . . . . . . . . . . . . . . . . . . .5.16

Fig. 5.10 Removing Power Amplifier (A30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.17

Fig. 5.11 Undoing Screws at the R&S GB 4000C Comfort Control Unit . . . . . . . . . . . . . . . . . . .5.18

Fig. 5.12 Removing the Interface Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.21

Fig. 5.13 Removing the Front Panel (A10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.22

Fig. 5.14 Disconnecting Cables on Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.25

Fig. 5.15 Fixing Screws at the Transceiver Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.25

Fig. 5.16 Removing the Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.26

Fig. 5.17 Removing the Antenna Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.27

Fig. 5.18 Removing the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.28

Fig. 5.19 Removing the R&S GS 4102 NMEA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.29

Fig. 5.20 Removing the Backup Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.31

Fig. A1.1 Top View of R&S M3SR Series 4100 without Cover (Example) . . . . . . . . . . . . . . . . A1.2

3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Figures

6124.9007.82.01 4

Description R&S M3SR Series 4100 HF Transceivers

1 Description

1.1 Introduction

This chapter describes the construction and function of the R&S M3SR Series 4100 150 W

Transceiver. Further chapters of this document deal with the following topics:

HF

¾ Working modes and functions of transceiver

¾ Test of equipment functions

¾ Troubleshooting

¾ Replacement of modules

¾ System / equipment configuration

For details on installation and operation refer to the Operating Manual of the relevant R&S M3SR
Series

4100 150 W HF Transceiver.

Fig. 1.1 R&S M3SR Series 4100 150 W HF Transceiver with Optional R&S GB 4000C

Comfort Control Unit

ICN-S4100-A-E11100-R-D0894-00001-A-01-1

1.1 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Construction

1.2 Construction

The R&S M3SR Series 4100 150 W HF Transceiver is made up of a basic unit R&S MR 4100X and can
be extended by various options for special signal characteristics and functions. The transceiver is a unit
of 19"

modular design measuring three height units (1 HU = 44.45 mm) and with a depth of 570 mm.

The frame accommodates all modules of the R&S M3SR Series 4100 150 W HF Transceiver (see
Fig. 1.2). The modules are inter-connected via plug-in connections, ribbon cables and HF cables. The
plug-in connections are either of self-locking or screwing type. The plug-in modules are mounted in a
frame with guides and self-locking plug-in connectors.

External interfaces are mounted on the front and rear panel. The front panel also includes the fan hood
whose entire surface is covered with ventilation holes. Cooling air is taken in through the front panel
and flows through the frame to cool the modules, before being exhausted via the rear panel. The
R&S

MR 4100X basic unit consists of the following modules:

¾ Front Panel

¾ Motherboard

¾ Power Amplifier

¾ Frontend

¾ Synthesizer

¾ Radio Controller

¾ Interface Module

¾ Antenna Interface

Additional internal hardware options:

¾ R&S FK 4120 20 dB Digital Selector

¾ R&S FK 4140 40 dB Digital Selector

¾ R&S GB 4000C Comfort Control Unit

¾ R&S GS 4102 NMEA Interface

Software options:

¾ R&S GS 4102S ALE Software

¾ R&S GS 4103S SECOM-H Software

¾ R&S GS 4112S Data Link Software

¾ R&S GM 4102S HF Modem Software

6124.9007.82.01 1.2

Construction R&S M3SR Series 4100 HF Transceivers

Fig. 1.2 View of R&S M3SR Series 4100 HF Transceiver without Cover (Example)

10

9

8

7

6

5

11

12

1

2

4

3

ICN-S4100-A-E11100-R-D0894-00110-A-01-1

1 Interface Module (A50)
2 Power Amplifier (A30)
3 Front Panel (A10)
4 R&S GB 4000C Comfort Control Unit (Option)
5 R&S FK 4120 Digital Selector (Option)
6 Synthesizer (A2)
7 Frontend (A1)
8 Radio Controller (A60)
9 Motherboard (A20)
10 Fans
11 R&S GS 4102 NMEA Interface (Option, 3 possible plug-in positions)
12 Antenna Interface (A211)

NOTE:

The top view is shown without the cables.

1.3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Function

1.3 Function

Refer to A1.2 - Drawings for Circuit Diagram and Interface Description.

1.3.1 Function of the R&S M3SR Series 4100 150 W HF Transceiver

The transceiver is suitable for reception in the frequency range of 10 kHz to 30 MHz and for
transmission in the frequency range of 1.5 to 30
communication modes for voice and data. The transceiver can be locally controlled, if the optional
R&S

GB 4000C Comfort Control Unit is integrated. The R&S GB 4000C is the central controller of the
transceiver. Operation and indication of the operating status are menu-oriented. Operator interaction is
performed via keyboard and display of the R&S
performed via an Ethernet LAN (at X20) connected to an external Control Unit that provides the man­machine interface. Data can be sent and received via the Ethernet port for remote control and service
purposes (configuration and software download). The Front Panel, connected to the Motherboard,
contains the microphone/headset connectors, loudspeaker and control elements for basic functions. All
other functions are handled by the R&S

GB 4000C and Ethernet LAN.

GB 4000C. Remote control of the transceiver can be

MHz. It provides various modulation and

The Motherboard basically provides the following functions:

¾ Distribution of the Radio Control Bus (RCB) via which the transceiver modules are controlled

¾ Control of the functional groups of the Motherboard itself, the I/O interfaces and also all other

transceiver modules by an FPGA on the Motherboard

¾ Monitoring of e.g. temperature and operating voltages by a system monitor

¾ Generation of all clock signals by the clock section which are required for the Motherboard and

the transceiver modules

¾ Distribution of power supply voltages generated by the Power Supply to the transceiver modules

and the external interfaces.

Flexible wiring is used where appropriate. Serial interfaces are used for data transfer and remote
control. Parallel interfaces are used to implement discrete inputs and outputs.

The Radio Controller provides the AF and IF signal processing and audio functions. It also controls the
internal and external RF modules and the switchover between receive and transmit mode via the Radio
Control Bus (RCB).

When the transceiver is in receive mode, the RF signal at antenna connector X30 is fed via the Power
Amplifier and connector X311 to the TX/RX input X1 of the Frontend module. In the Power Amplifier it
is filtered and preamplified. The receive signal is fed via a R&S
(tuneable band-pass filter) if one is connected to X313 and X314. Otherwise it is looped through
connectors X313 and X314. For a separate receiving antenna, an RX-only input X2111 is available at
the Antenna Interface which is connected to the RX input X2 of the Frontend module. In the Frontend
module the signal is downmixed to the first and the second intermediate frequency (48.048
48

kHz). The 2nd IF signal is digitized by an A/D converter and downsampled in an FPGA. From the

Frontend output, the signal is taken via the Motherboard to the Radio Controller for further processing.

FK 4120 / R&S FK 4140 Digital Selector

MHz and

6124.9007.82.01 1.4

Function R&S M3SR Series 4100 HF Transceivers

In transmit mode, the digital IF-data (complex I/Q) is converted in the Frontend module to an analog

kHz signal. This is mixed to the 48.048 MHz intermediate frequency and the commanded transmit

48
frequency. The transmit signal of +10
Power Amplifier. The transmit signal can be routed through a R&S
Selector if one is connected to X313 and X314. The modulated transmit signal is amplified and filtered
(harmonic filter) in the Power Amplifier and finally made available at antenna connector X30.

The Synthesizer generates the LO1 and LO2 signals needed in the Frontend module. The LO1 signal
(40.058 to 70.048
signal (80

MHz) at X102 is used for downconverting the 1st IF signal into the 2nd IF.

MHz) at X101 is used for upconverting the antenna signal into the 1st IF. The LO2

dBm is taken from X1 of the Frontend module to X311 of the

FK 4120 / R&S FK 4140 Digital

1.5 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Function of the Modules

1.3.2 Function of the Modules

The R&S M3SR Series 4100 150 W HF Transceiver is equipped with the following modules:

FK 41x0 Digital Selector (see 1.3.2.1 - Function)

Synthesizer (see 1.3.2.2 - Function)

Frontend (see 1.3.2.3 - Function)

Radio Controller (see 1.3.2.4 - Function)

Power Amplifier (see 1.3.2.5 - Function)

R&S GB 4000C Comfort Control Unit (see 1.3.2.6 - Function)

Interface Module (see 1.3.2.7 - Function)

Front Panel (see 1.3.2.8 - Function)

Motherboard (see 1.3.2.9 - Function)

Antenna Interface (see 1.3.2.10 - Function)

R&S GS 4102 NMEA Interface (see 1.3.2.11 - Function)

6124.9007.82.01 1.6

Digital Selector - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.1 Digital Selector - Function

The optional Digital Selector is available in two basic versions:

¾ R&S FK 4120 (20 dB bandpass)

¾ R&S FK 4140 (40 dB bandpass)

The Digital Selector is a bandpass filter that is automatically set to the operating frequency (receive and
transmit mode). It is used to improve intermodulation (receive mode) and phase noise (transmit mode).
The stop-band attenuation of one bandpass is 20
Two bandpass modules can be connected in series to get 40
separation (R&S FK 4140). The use of the Digital Selector is recommended in strongly disturbed RF
environments, i.e. for collocation problems, such as those occurring on board of ships. With a digitally
tuned filter, the Digital Selector improves the receiver input selectivity and the phase noise at the
transmitter (>
coupled with very short tuning times (<

System Overview

170 dB/Hz), and reduces harmonics and non-harmonics. Its bi-directional function

10 ms) allows frequency-agile operation.

dB in 10 % frequency separation (R&S FK 4120).

dB attenuation in 10 % frequency

The Digital Selector is composed of the Control Module and one or two bandpass filter boards, one in
case of R&S
Control Module the interface for the Radio Control Bus (RCB) is located. All digital and protection
controls (overcurrent, overvoltage and temperature) are also located on this board. Basic filters
(lowpass filters of 1.5
to provide additional spurious and noise filtering outside the used frequency.

TX mode

When in transmission mode, the RF signal at X303 coming from the Radio Frontend Unit (RFU) is
switched by means of relays K110 and K100 to a digital 31
amplifier. The step attenuator is used to compensate the amplification deviation in the frequency and
temperature range. It will be adjusted in such a way that the amplification factor for the whole Digital
Selector stays in the range 0 ± 1

The relay K120 feeds the RF signal to a 30 MHz lowpass filter to avoid radiation of undesired spurious
and noise at frequencies above 30
switches the RF signal to a 1.5
frequencies below 1.5
successively two bandpasses 1 and 2 via X320 to X321. After that the RF signal is fed to K190. If the
TX frequency is <
to K190, bypassing the bandpass filters.

FK 4120 and two in case of R&S FK 4140 (see Fig. 1.3). On the circuit board of the

MHz and 30 MHz, highpass filter 1.5 MHz) are introduced in the TX and RX path

dB step attenuator with 1 dB steps and an

dB.

MHz. After that, if the TX frequency is > 1.5 MHz, the relay K130

MHz highpass filter in order to avoid transmitting spurious and noise in

MHz. The RF signal leaves the Control Module at X310 and passes one or

1.5 MHz, K130 switches the RF signal to a 1.5 MHz lowpass filter. After that it is fed

Coming from the bandpass filters (f > 1.5 MHz) or bypassing them (f < 1.5 MHz), the RF signal at K190
is switched via K160, K180, K1 and K170 to the output X302 RX TX to PA.

1.7 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Digital Selector - Function

RX mode

When in receiving mode, the RF signal coming in via connector X301 RX only or X302 RXTX is fed into
the protection circuit (overvoltage, overcurrent) and to K100. It is switched to the 30
If the frequency is >
filtering. If the frequency is <
bandpass filters. After that, K160 and K110 switch the RF signal to RFU at X303.

Bypass Mode

This mode can be manually set via the Main Menu of the radio. In this mode not only the bandpass
filters are bypassed, but also the 30
pass is switched by K100. The Bypass mode is used only in RX mode. In TX mode the bandpass shall
be always activated.

Bandpass filters

In the bandpass filters 1 and 2, the RF signal is filtered (via a block filtering, coils and capacitors
switched according to the frequency) and amplified to achieve the desired gain. R&S
both bandpass filters, while R&S
bandpass filter1 is directly connected to the input (SEL-OUT) of the Control Module.

1.5 MHz, K130 switches it to the bandpass filters and K190 recovers it after

1.5 MHz, K130 switches the RF signal directly to K190, bypassing the

MHz lowpass and 1.5 MHz lowpass and highpass filters. The by-

FK 4120 will use only one bandpass filter. In this case, the output of

MHz filter via K120.

FK 4140 will use

The circuit is basically composed of a block of switchable capacitors and coils, an amplifier and a 20 dB
attenuator. The coils and capacitors are switched ON and OFF by means of relays, depending on the
frequency. The 15 tables relating frequency, relay status and temperature are located in the FLASH
memory of the Control Module. More than 6000 tunings are stored in the memory.

The amplifier compensates the losses caused by the entire filtering chain on control board and band­pass filter. The amplification factor is about 12.5 dB at 1.5 MHz and decreases to about 10.5 dB at
30

MHz. The RF amplifier can be bypassed by the 20 dB attenuator.

The 20 dB attenuator is activated in 2 modes:

¾ Manual activation by the operator via the Main Menu of the radio

This can be necessary if the received signal levels are very high. This mode is only used for ex­treme co-location situations. Only the 20 dB attenuator in bandpass filter 1 can be activated.

¾ Automatic activation

In case of very high input levels in Rx Mode, the 20 dB attenuators in bandpass filters 1 and 2 are
automatically activated in order to prevent damage.

RF level detectors

Two RF level detector circuits are integrated on the Control Module. These circuits rectify and amplify
RF signals which are only available in transmit mode. So it is possible to detect a missing input RF sig
nal coming from the Frontend or a fault inside of one of the bandpasses.

-

6124.9007.82.01 1.8

Digital Selector - Function R&S M3SR Series 4100 HF Transceivers

Fig. 1.3 Digital Selector, Block Diagram

X301

RX only

X302

RX TX
to PA

JTAG

RCB

For PBIT
without PA

K170

LDO Voltage
Regulator

VCC +3.3V
+12V, -12V

X320

K1

K1

Overvoltage
Overcurrent
Detection

JTAG

100kHz

(Parallel)
RCB-Interface

IBP Control

Gain Control

FPGA

4x 4x7x 11x

2x

Bandpass Control

JTAG

JTAG

PLL

tune

3x

Detection of
Bandpass 1 or 2

CPLD

K180

FLASH RAM

CLOCK

1.5 MHz HP

2x

TX

K100

RX/TX

RX

RX

K120

SEL-IN

X310

Overvoltage
Detection

Temperature

Relay Control

OR

TX

30 MHz LP

K130

K400

Bypass

DIG
ATT

1.5 MHz LP

3 x R

TX

Bandpass 1

ATTEN

K100

TX

RX

K160

TX

RX

K160

K190

SEL-OUT

X311

K401

Control Module

RX

X303

RX TX

K110

to RFU

PPS_RFU_FAIL
(to FPGA)

PPS_BP_FAIL
(to FPGA)

X321

Bandpass 2

4x 4x7x 11x

3x

K400

ATTEN

K401

X321

X320

Overvoltage

2 x

Detection of
Bandpass 1 or 2

Bandpass Control

CPLD

JTAG

JTAG

2 x

Detection

3 x R

OR

Temperature

Relay Control

ICN-S4100-A-E11100-R-D0894-00201-A-01-1

1.9 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Synthesizer - Function

1.3.2.2 Synthesizer - Function

The Synthesizer generates 2 RF signals and reference frequencies for other modules:

¾ LO1: First Local Oscillator

¾ LO2: Second Local Oscillator

¾ 100K_REF: Reference signal for other modules (100 kHz sine wave)

¾ 10K_REF: Reference signal for other modules (10 kHz square wave)

All generated frequencies are synchronised by an internal 10 MHz OXCO or by an external 1, 5 or
10

MHz reference frequency.

Essentially, the Synthesizer contains five functional blocks (see Fig. 1.4):

¾ Control

¾ 10 MHz Loop

¾ LO2 LOOP

¾ Cleaning Loop

¾ LO1 Loop

The communication of the Synthesizer with the Radio Controller is performed via the RCB (Radio
Control Bus). Via this bus the FLASH circuit is programmed, frequency and RX/TX information are
written, interrupts are captured, calibration functions are enabled/disabled and ready information of the
Synthesizer are read.

Control

The control circuit controls the hardware of the Synthesizer and is made up of an FPGA, a CPLD and a
FLASH device to convert the RCB (Radio Control Bus) signals to different control lines on the board
needed in the other functional blocks. Among other tasks, the FPGA receives BCD coded RX or TX
frequency updates via the Radio Control Bus. This frequency information is converted to the binary RX
or TX frequency.

A pre-tune learning process (self calibration) is implemented. The automatic calibration circuit supports
in-system measurements and adjustments to obtain values for VCO pre-tuning and Loop-Gain­Compensation without using a PC or similar. The determined values are stored in a FLASH memory.

Via the BIT ADC the output levels, power supply voltages and temperature are monitored permanently.

The 100 kHz sine wave and 10 kHz square wave signals are generated in the FPGA by frequency
divider.

6124.9007.82.01 1.10

Synthesizer - Function R&S M3SR Series 4100 HF Transceivers

10 MHz Loop

The internal timebase and reference frequency for the control section of the Synthesizer is generated
by a 10
an external reference signal of 1
external reference signal is implemented in the FPGA.

LO2 Loop

The LO2 Loop generates the 80 MHz LO2 signal for down-conversion of the 1st IF signal into the 2nd
IF in the Frontend module. The signal is also used as a reference frequency to generate the 1st local
oscillator (LO) frequency for the Frontend module.

Cleaning Loop

The Cleaning Loop generates the reference frequency (85 to 86 MHz) for the Main Loop. The resolution
of this reference frequency is ≤

LO1 Loop

MHz OCXO with an accuracy of ± 0.5 ppm. Alternatively this reference can be synchronized to

MHz, 5 MHz and 10 MHz. The PLL with flexible divider ratios for the

1 Hz.

The LO1 Loop generates a frequency of 40.048 to 70.048 MHz to the Frontend module for up-conver­sion of the antenna signal into the 1st IF (40.048 MHz). The LO1 Loop has four VCOs to cover the
whole frequency range with a good phase noise performance. To reduce any unwanted signals, the
supply voltages of all deactivated VCOs are switched off. For fast frequency changes the VCOs will be
pre-tuned.

1.11 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Synthesizer - Function

O

O

H

Fig. 1.4 Synthesizer, Block Diagram

10M_REF

(sinewave)

1 / 5 / 10 MHz (0dBm)

10K_REF

(3.3V CMOS)

(100 kHz sinewave 1V

100K_REF

JTAG

RCB

eff

)

X21

X22

X23

180 pin
Connector

X103

(not fitted)

LO2_LOCK
(to FPGA)

10 kHz

Error

10 bit

D

A

AD5310

D

A

AD5310

DDS

100 kHz

Comp.

100 kHz

to FPGA
and CPLD

LEDLED LED

Warning

AD7476

Pretune

Ref.

ADF4001

PLL

R

N

LO1_LOCK
(to FPGA)

10 .. 12 MHz

= 2*(5..6 MHz)

N

R

PLL

Parallel
RCB-Interface

Go

95 MHz

LO1 Loop

LO1_LEV

(to BIT ADC)

ATTEN

Cleaning Loop

85 .. 86 MHz

80 MHz

ATTEN

10 dB

A

D

3 kHz

15 MHz

CLEAN_LOCK
(to FPGA)

12 bit

ADF4001AD9851

N

VCO

40 .. 46 MHz

VCO

46 .. 53 MHz

VCO

53 .. 60 MHz

VCO

60 .. 70 MHz

CLEAN_LOOP_TUNE

(to BIT ADC)

PLL

50 kHz

R

5 .. 6 MHz

8 MHz 8 MH z

VCO

LO2 Loop

OCXO

D

8

ATTEN

LO2_LEV

(to BIT ADC)

10 MHz Loop

OVEN_COLD
(to FPGA)

Control

8:1

1

MUX

8:1

MUX

1

1

Temperature

1

from LO1 Loop

1

from Clean. Loop

2

from LO2 Loop

LO2_TUNE

(to BIT ADC)

FPGA

10 kHz
Divider

10 MHz

100 kHz

PLL Mainloop

Divider

DDS Cleaning Loop

PLL Cleaning Loop

PLL Reference Loop

VCXO

80 MHzADF4001 5 Hz 90 MHz 10 dB

AD7476

A

Flash

D

3

12 bit

10 MHz

(sinewave)

BIT ADC

A

TLV2548IPW

12 bit

PLL

VCO Control

Pretune

7 Hz

D

A

AD5310

Comp.

CPLD

MUX Control

LO1 Loop

Cleaning Loop

LO2 Loop

ICN-S4100-A-E11100-R-D0894-00202-A-01-1

X101

L

40.048
...

70.048 M
(0 dBm)

X102

L

80 MHz
(0 dBm)

8

Vcc

8

Vcc

6124.9007.82.01 1.12

Frontend - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.3 Frontend - Function

General Function

(see Fig. 1.5)

The basic functions of the Frontend module are:

¾ in general:

• Data exchange with the Radio Controller (RC): IF-TX-data, IF-RX-data, AGC

¾ in receive:

• Mixing the antenna signal (10 kHz to 30 MHz) to the 48 kHz IF

• Filtering and amplifying the antenna signal

• Converting the 48 kHz IF to a digital data stream

¾ in transmit:

• Converting the digital IF-data (complex I/Q) to an analog 48 kHz signal

• Filtering and mixing this 48 kHz signal to the commanded transmit frequency

• Providing the exciter output signal (level +10 dBm PEP for SSB / +10 dBm for CW)

The RCB (radio control bus) is used for the main communication between Frontend and Radio
Controller. The ESSI (enhanced serial synchronous interface) realizes the communication between
Frontend and Radio Controller concerning timing critical signal processing data for TX and RX
operation.

Signal conversion RX and TX

Connector X1 serves as RX input as well as TX output. Connector X2 is provided for RX input signal
only. In RX mode a preamplifier increases the RX signal by 10
overvoltage detection acts as a relay every time RX input signal is too high. An input filter suppresses
unwanted signals with f
mix the antenna signal to the 1st IF of 40.048
crystal that provides a very precisely defined centre frequency, high quality factor Q and very steep
bandpass characteristics. The AGC amplifier with voltage controlled gain prevents the IF-A/D converter
against overdrive at large antenna signals. The second Mixer is used to mix the 1st IF (40.048
the 2nd IF (48
converter delivers digital IF data, which are proceed in the FPGA and routed further to the Radio
Controller with a different data clock. A level detector delivers information for the AGC regulator. The
IF A/D converter requires a 12.288
reference frequency, using a PLL circuit.

kHz). The 2nd 48 kHz IF signal is filtered, amplified and finally digitized. The IF A/D

> 30 MHz and improves IF rejection. The first mixer and crystal filter is used to

MHz. The crystal filter contains a special form of quartz

MHz clock. This clock is synchronized to the 100 kHz radio

dB if it is not bypassed (0 dB gain). An

MHz) to

1.13 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Frontend - Function

In TX mode a D/A converter generates the modulated 48 kHz IF signal for transmit mode. This signal
is filtered and afterwards transformed for the image rejection mixer. The second mixer and crystal filter
are used in TX mode to mix the 2nd IF (48

kHz) to the 1st IF (40.048 MHz). The AGC amplifier is de­activated in TX mode. The first mixer is used to mix 1st IF of 40.048 MHz to the TX frequency. The
preamplifier generates the exciter output signal.

+10 dBm TX output level control

In order to have a constant TX output level (+10 dBm) for all frequencies, a fitting process is done, re­sulting in a look-up table stored in the FLASH. For each TX frequency, the correspondent table value
is read. Via a D/A converter the table value is converted to a DC value ALC (Automatic Level Control),
to control the TX D/A converter output level.

Fig. 1.5 Frontend, Block Diagram

X1

Tx/Rx

X2
Rx

100 kHz
Ref. Freq.

RCB

AF­Test
Output

ESSI

Overvoltage

Detection

PLL

12.288 MHz

digital Tx/Rx

Signal

I/O

Inhibit

D/A

Flash

10 dB

Tx

IF

A/D

FPGA

Clock

30 MHz

D/A

A/D

A/D

AGC regulator

Filter

40.058 - 70.048 MHz

1st Mixer

LO 1

AGC

1st IF

40.048 MHz

2nd Mixer

2nd IF

48 kHz

0°

80 MHz

Tx

D/A

DIV

2

LO 2=

90°

AGC

V

ref

ICN-S4100-A-E11100-R-D0894-00203-A-01-1

6124.9007.82.01 1.14

Radio Controller - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.4 Radio Controller - Function

The Radio Controller communicates with the other radio modules and controls all internal processes. It
basically provides the following functions:

¾ Distribution of signals for modules, submodules and optional modules, mechanical support for

sub-assemblies (codec boards)

¾ Narrowband and wideband audio functions

¾ Provision of serial digital IF interface to RF modules

¾ AF and IF signal processing, voice compressor

¾ Provision of plain and secure link services, EPM operation

¾ Control of internal and external RF modules via the Radio Control Bus (RCB)

¾ Back-up and Erase functions

¾ IBIT (Initiated Built-in Test), PBIT (Power-on Built-in Test), CM (Continuous Monitoring)

¾ Provision of several external communication interfaces like RS232, Ethernet 10/100 Base T

¾ Filtering of internal and external interfaces

Basic Functional Blocks

The basic functional blocks of the Radio Controller are (see Fig. 1.6):

¾ Main Processor CPU with external memory (FLASH memory and SDRAM)

¾ Signal processors DSP-1 for IF / AF processing with internal memory

¾ Signal processors DSP-2 for baseband processing with internal memory

¾ FPGA with

• interface between FPGA and CPU

• two PLL's to generate internal clocks

¾ CPLD with erase and reset functions

1.15 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Radio Controller - Function

¾ two codec's used as audio interfaces, one for line (wideband) and one for headset (voiceband)

• back-up power distribution and backup battery of 3.6 V

• back-up real-time clock (RTC)

• back-up-SRAM

¾ filters and drivers/ receivers for internal interfaces

¾ filters and drivers/ receivers for external interfaces

The individual functional blocks are interconnected via bus systems. All processes of addressing and
data exchange are controlled centrally by the CPU.

The voltage of the backup battery is measured during the BIT. If the backup battery is (nearly) empty,
a battery warning is displayed.

6124.9007.82.01 1.16

Radio Controller - Function R&S M3SR Series 4100 HF Transceivers

Fig. 1.6 Radio Controller, Block Diagram

X54/X55

ICN-S4100-A-E11100-R-D0894-00204-A-01-1

1.17 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Power Amplifier - Function

1.3.2.5 Power Amplifier - Function

The 150 W Power Amplifier consists of the following functional groups (see Fig. 1.7):

¾ Preamplifier

¾ Final Stage

¾ Harmonic Filter

¾ Control Board

¾ DC Power Supply

¾ Modem (Option)

The 150 W Power Amplifier amplifies the transmit signal from a +10 dBm level to 150 W peak envelope
power (PEP) or 100

The transmit signal from the Frontend module is fed to the input connector X311. It passes the
Preamplifier, Final Stage and the Harmonic Filter. The antenna connector X30 is used for TX-out and
also for RX-in, if a separate receiving antenna is not available. In receive mode the Power Amplifier
routes the receive signal to the Frontend module via Harmonic Filter, Preamplifier and connector X311.

W continuous wave (CW).

Transmit and receive signals are looped through connectors X313 and X314. If a Digital Selector is in­stalled, it is connected to X313 and X314.

Two fans at the rear of the Power Amplifier provide air cooling for the modules in the radio.

Preamplifier

For transmit the HF signal (+10 dBm) is attenuated by 10 dB and is fed via a voltage-controlled
attenuator to an amplifier. The output from the amplifier is fed to the TX output through the Digital
Selector (optional). The amplifier can be switched on and off via the signal OP OFF. For receive the
received signal (RX) is directly fed backward to the HF IN/OUT connector also through the Digital
Selector (optional).

Final Stage

The HF signal from Preamplifier (approx. +13 dBm) is amplified by a two-stage wideband amplifier. The
wideband amplifier consists of a driver stage (20
gain). It can be switched on and off via the signal OP OFF. With the aid of an NTC resistor, the heat
sink temperature is measured. The resultant signal VREFTK compensates the bias for the power
transistors in the output stage according to the heat sink temperature. The following signals are routed
to the Power Amplifier Control Board for monitoring purposes:

dB gain) and a pushpull output stage (approx. 18 dB

6124.9007.82.01 1.18

Power Amplifier - Function R&S M3SR Series 4100 HF Transceivers

¾ Temperature sensing TSFS

¾ Current sensing CSFS

¾ Drain / source voltage sensing signal VSFS

¾ Stable reference voltage VREF

Harmonic Filter

The signal from the Final Stage is routed via one of the eight lowpass filters to a directional coupler.
The low pass filters cover the frequency ranges 1.5 to 2.2

MHz, 6.7 to 9.7 MHz, 9.7 to 14.2 MHz, 14.2 to 20.6 MHz and 20.6 to 30.0 MHz. The directional

6.7
coupler generates two measuring voltages FORV and REFV, which are proportional to the forward
power and reflected power, respectively. The BIT REL switch is energized only during Built-In-Test
(BIT) operation, terminating the HF signal with a 50
is forwarded via a decoupling capacitor to the antenna connector X30. As soon as the signal ATU REL
is active, a 28-V DC voltage is applied via current limiting circuit and low pass filter to the antenna
output. This ensures the power supply of the antenna tuning unit, if connected.

Ω resistor. During normal operation, the HF signal

MHz, 2.2 to 3.2 MHz, 3.2 to 4.6 MHz, 4.6 to

Control Board

The Control Board controls all the other boards included in the module and implements the transmit
power regulation. The FPGA is configured via CPLD with data stored in the FLASH. The amplifier con
trol functions are commanded using the serial Radio Control Bus (RCB). The output to other RCB de-
vices is also available. The forward and reflected wave voltages from the directional coupler and the final
stage current are sampled by fast 10-bit A/D converters. The values are passed to the regulator, which
is implemented in the FPGA. The regulator output drives the 14-bit D/A converter. Its analog output is
routed through a low pass filter to the attenuator driver. For storage of the power calibration values a
FRAM memory is available. The Control Board permanently monitors the supply voltages and the final
stage temperature.

DC Power Supply

From an external DC voltage the DC Power Supply generates all voltages needed for operating the
radio and driving the fans. Connector X31 is the main input (28
input (19 to 31
the Motherboard. The DC Power Supply is fitted with a Built-in Test Equipment.

VDC, ≤ 25 A). Connectors X320 (External supply) and X321 (Control) are connected to

VDC, ≤ 25 A) and X32 is the battery

-

1.19 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Power Amplifier - Function

Fig. 1.7 Power Amplifier, Block Diagram

Harmonic Filter

X30

ANT/

28VDC

Digital

Selector

(option)

X314

X313

X311
HF
IN/OUT

Modem
(option)

(from Cont. Board)

Control Board

(from Harmonic Filter)

different I/O´s

to other modules

RX

TX

Preamplifier

TX REL
(from Cont. Board)

REFV

FORV

Fast
A/D

FPGA

ANT

ILIM

ATU REL
(from Cont. Board)

Fast
D/A

BIT REL

A/D

(from Cont. Board)

ALC

CPLD

FLASH

FRAM

TX REL

(from Cont. Board)

REFV

FORV

(to Cont. Board)

OP OFF
(from Cont. Board)

Final Stage

OP OFF
(from Cont. Board)

HF IN

CSFS

28 VDC

VSFS

DC Power Supply

+3.3V,
+5V,
+12V,

-12V

Filter Control

CURR

TSFS

VREF

supply voltages

DC

4 x

FILT 0 ...2
(from Cont. Board)

RX

TEMP

VOLT

DC

HF IN

TX

HF OUT

VREFTK

VOLT

FAN

FAN

XP316

FIRST_TX

XP315

FIRST_RX

Serial RCB

XP318

NEXT_RX

XP317

NEXT_TX

X31

DC IN

X32

BATTERY

X33

CONTROL

X320

EXT. SUPPLY

X321

CONTROL

X330

MAIN_RX

ICN-S4100-A-E11100-R-D0894-00205-A-01-1

6124.9007.82.01 1.20

Comfort Control Unit (Option) - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.6 Comfort Control Unit (Option) - Function

The R&S GB 4000C Comfort Control Unit provides the man-machine interface for local control (or re­mote control of detached radios) and contains all necessary control and display elements. The
R&S

GB 4000C is available in two basic versions: It either comes as a module forming an integral part

of the relevant radio, or as a self-contained unit for remote control.

The local-control version itself is available in several models, all containing a controller board, a front
panel board and a 5" TFT display. In addition to these functional groups, the remote-control version
(Mod. 03) features a sturdy case and its own DC/DC power supply. The control unit is functionally con
trolled by a micro-controller. All major functions for the interface to the display and front panel board are
implemented in an FPGA. The FPGA also scans the keys of the front panel board.

General Function

The R&S GB 4000C Comfort Control Unit consists of the following main functional groups (see
Fig. 1.8):

¾ Front panel board

-

¾ 5" TFT display

¾ Controller board

¾ DC/DC power supply (only Mod. 03)

The front panel board contains keys, LEDs for illumination, indicator LEDs, a keyboard and a rotary
knob. For readability in dark ambience the markings of the keys are illuminated. All indicators and the
illumination can be dimmed down. The rotary knob is used to choose between a number of provided
selections depending on the key context and to support the tuning function. The front panel board is
controlled by the controller board.

The 5" TFT display is used for displaying the operating modes, parameters and equipment status. It is
controlled by an LCD controller. The LCD controller includes a 40-kByte frame memory which is
sufficient for 4 bits / pixel and the size of the display. With Mod. 02 and Mod. 03 of R&S
display is powered by a voltage of 7.5

VDC. The supply voltage for Mod. 50 is 9.5 VDC. The display

GB 4000C, the

has a resolution of 320 pixels x 234 lines. The display is provided with a CCFL (Cold Cathode
Fluorescent Lamp) back light. The brightness of the back light and the display contrast are user­controllable.

The controller board accommodates the micro-controller and FPGA with peripherals. The micro­controller is in charge of controlling all parameters of the (remote) radio. For this purpose it provides
data paths between the external interfaces and the (remote) radio. The realtime clock, required to
enable distinction between warm-start and cold-start (depending on how long the unit is off), is
connected to the micro-controller via I

2

C bus. Functioning of the control unit is monitored by a system
hardware monitor. For test purposes, a test connector to the micro-controller is available. The interface
AFU (Audio Frequency Unit) is designed to receive and transmit control, voice and maintenance data
between AFU and the controller board. The LAN transceiver is used to transmit control data and receive
monitoring data as well as configuration and download data. This interface may also provide digital
voice information via LAN, which will be transferred to the AFU via the interface AFU. Serial interfaces
of the types RS232/RS422/RS485 allow the remote control of R&S

Series 4000 equipment.

1.21 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Comfort Control Unit (Option) - Function

The R&S GB 4000C Comfort Control Unit also includes a connector for connection of a Key Distribution
Device (KDD). The controller board contains a KDD transceiver for distribution of management data to
the radio.

Model 03 of R&S GB 4000C Comfort Control Unit contains a separate power supply module for 28 VDC
supply. The power supply module comprises all functional groups for generating the supply voltages

VDC, +8.7 VDC, +5 VDC and -12 VDC. In addition, audio, RS485/RS422/RS232, Ethernet and

+3.3

2

I

C bus signals from/to the control board pass through this module.

Fig. 1.8 Control Unit R&S GB4000C, Block Diagram

W420

IR
Encoder/
Decoder

LCD

Contoller

SRAM

RGB

X2

W430

X3

W410

X1

X1

Display

5" TFT 320 x 234

Panel Illumination

Keyboard

Rotary Knob

KDD Connector X4

IrDA

Optics

ON

CU

G

GO

Front Panel Board

X43

X44

X45

X46

X8

Power Supply

(only Mod. 03)

DC Power

LAN

RS485

Audio

X100
Main

X400
Main

32 768 Hz

Real-time

Clock

Goldcap-

buffered

System

Hardware

Monitor

LAN

Transceiver

Interface

AFU

RS232, RS422,

RS485

EEPROM

40 MHz

Test Connector

Microcontroller

PC

FPGA

Controller Board

Clock
4 MHz

IrDA

µC Bus

SRAM

Goldcap-

buffered

FLASH
PROM

KDD
Trans­ceiver

ICN-S4100-A-E11100-R-D0894-00206-A-01-1

6124.9007.82.01 1.22

Interface Module - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.7 Interface Module - Function

The Interface Module is a frame for accommodation of the NMEA Interface or other optional interfaces.
Installed interfaces are accessible from the rear of the radio.

The Interface Module carries connectors X511 to X534, used for connecting up to three optional
modules to the radio, as well as connectors X11 to X13, which establish the connection to the
Motherboard (see

Fig. 1.9).

Via these connectors and lines, signals are exchanged with the RDB (Radio Data Bus), DISC (Discrete)
Bus and RCB (Radio Control Bus), and discrete signals are communicated between the platform and
the optional modules. In addition, the required operating voltages are fed in at these connectors.

Fig. 1.9 Interface Module, Block Diagram

X511

X512 X513 X514 X521 X522 X523 X524 X531 X532 X533 X534

X11 X12

Interface Board

X13

ICN-S4100-A-E11100-R-D0894-00212-A-01-1

1.23 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Front Panel - Function

1.3.2.8 Front Panel - Function

The Front Panel is equipped with operating buttons, connectors, LEDs and loudspeaker (see
Fig. 1.10).

The Front Panel is connected to the Motherboard via connector X2 (see Fig. 1.11). All inputs and out­puts of the Front Panel are proof against short cuts and static voltages from outside. Behind the two
inputs for the microphones a two stage amplifier and a dynamic compressor are arranged.

To the connector X5 a Fill Gun Device can be connected. By using the RS232 interface the needed
data can be loaded into the radio. The DC voltage for the Fill Gun will be delivered from the radio to the
Fill Gun via X5 pin 20. So the Fill Gun does not need any further external supply voltage. The battery
line is protected with fuse F1 (1

A) located on the printed circuit board.

The special temperature monitoring integrated circuit transmits the actual temperature of the printed

2

circuit board via an I

C Bus to the Motherboard.

The integrated regulator circuits generate operating voltages of ±10.5 VDC and +5 VDC for onboard
components.

6124.9007.82.01 1.24

Front Panel - Function R&S M3SR Series 4100 HF Transceivers

Fig. 1.10 Front Panel

1

910

8

7

6

ICN-S4100-A-E11100-R-D0894-00100-A-01-1

45

1 Indicators for used power supply (battery, AC/DC)
2 ON/OFF button S1
3 Erase key S2
4 Radio status indicators (RF, GO, SQL)
5 INT/EXT button S3
6 Volume control P2 (loudspeaker)
7 Connector X6 for headphone (audio output only)
8 Connector X7 for headset (incl. microphone and Morse key)
9 Volume control P1 (headset)
10 Connector X5 for Fill Gun

3

2

1.25 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Front Panel - Function

Fig. 1.11 Front Panel, Block Diagram

X2

Power supply
+ 5V
+ 10.5V

- 10.5V
+ 3.3V

FP_HEADSET_VOLUME

FP_SPEAKER_VOLUME

FP_INT_SPEAKER

FP_6.3_JACK_PHONES

FP_HEADSET_PHONES

X3

S1

S3

S2

EMV

Battery LED (green)

AC/DC LED (green)

ON/OFF key

Squelch LED (yellow)

Go LED (yellow)

RF LED (yellow)

Speaker extern / intern

Erase

Volume Headset P1

Volume Headset P2

Speaker internal 0.3 W, 25 Ohm

X6

X7

Headset Audio out 6.3mm jack

Headset Audio out

FP_GAIN CONTROL

Connector X2 to Motherboard

FP_MIC_OUT

FP_PTT

2

I C SDA/SCL

RS 232

Micro­preamplifier
with variable
compression

Temp.-

monitor

2

I C
[°C]

X7

X7

X7

EMC

X5

Headset Micro 1 in

Headset Micro 2 in

PTT in

Fill Gun

ICN-S4100-A-E11100-R-D0894-00208-A-01-1

6124.9007.82.01 1.26

Motherboard - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.9 Motherboard - Function

The Block Diagram of the Motherboard is shown in Fig. 1.12.

The Motherboard consists of the following functional groups:

¾ Control logic essentially consisting of an FPGA to control and monitor the periphery, LEDs on

Front Panel, fan speed, temperature and generated power

¾ FLASH-Memory for configuration of data, module parameters and look-up tables

¾ BOOT CPLD (Complex Programmable Logic Device)

¾ VCXO (Voltage Controlled Crystal Oscillator) with 40 MHz, synchronised with a 100 kHz

reference sine wave signal coming from the Synthesizer

¾ Audio Switch Matrix and Audio Bus

¾ Ethernet hub

The FPGA is commanded by the Radio Controller via a parallel Radio Control Bus which is also
connected to other modules. The FPGA generates a 20

Configuration

After power-up, the FPGA needs the BOOT CPLD to load the configuration from Flash into the FPGA.
In case of no errors and appropriate supply voltages, the CPLD switches the address and control
signals to high impedance. The FPGA can now control the FLASH memory. In this case it is possible to
download a new configuration into the FLASH m

ON/OFF Control

The ON/OFF Control is implemented with an 8 bit microcontroller with internal Oscillator (4 to 20 MHz),
Timer and Watchdog timer, integrated FLASH-ROM for program, RAM and EEPROM for data.
Basically, the last power state (ON or OFF) is stored in an EEPROM for retrieving this state after a
power interruption. Pressing the switch button on the Front Panel toggles the current power state so
that the state recorded in EEPROM matches the new state. After a power interruption, the device will
be turned on when there is an "ON" found in EEPROM. When the microcontroller decides to turn off
the device, it first tells the Radio Controller. It turns off the power immediately as soon as the Radio
Controller responds or 5
again.

Audio

s elapse. There is a 2 s delay after power-off, before power can be turned on

emory via the Radio Control Bus.

MHz clock for the Ethernet hub.

Analog switches connect the sources and sinks with different electrical characteristics to the Audio Bus
as needed. The switches located on Motherboard are collectively named "Audio Switch Matrix". The
Audio Bus on Motherboard consists of 4 Audio Bus lines at a nominal level of -8
dynamic range of ±10
proof and allows as a side effect the mixing of audio sources. The Audio Bus extends directly to the
Interface Module to be accessible for modules located there (e.g. NMEA). The audio signals to and from
the Radio Controller (LINE_TX and LINE_RX) are fed via an amplifier for impedance and level match
ing.

1.27 6124.9007.82.01

dB. Each source has an impedance of 600 Ω, this makes the bus short-circuit

dBm at 600 Ω and a

-

R&S M3SR Series 4100 HF Transceivers Motherboard - Function

On the external audio connector there are 4 isolated differential audio lines. Two lines (LINE_RX_1,
LINE_RX_2) are outputs used for RF receive direction. The other two lines (LINE_TX_1, LINE_TX_2)
are inputs used for RF transmit direction. The nominal external audio level can be in the range -10 to
+10

dBm into 600 Ω. The input/output circuitry are adjusted by the FPGA to translate a level in this

range to the nominal Audio Bus level of -8

Where necessary, operational amplifiers are used to achieve appropriate audio signal levels.

Microphone level

The microphone input is located on the Front Panel. The dynamic microphone provides a level range
of 0.3 to 10
by a compressor on the Front Panel. A level control is used to adjust the microphone signal to the level
of the Audio Bus.

Audio level relations and control

The HEADSET potentiometer is mapped to the headset volume control of the audio amplifier. The
HEADPHONE/SPEAKER potentiometer is mapped to the volume control of the other 3 audio
amplifiers. Reason: If "jack output" is in use, both speakers are off, otherwise only one of the speakers
is on, depending on INT/EXT signal, derived from user input INT/EXT button.

mV, the elektret microphone covers 3 to 100 mV. This 30 dB range is compressed to 20 dB

dBm.

Speakers

The internal speaker works at approximately 0.5 W, the external speaker (rear connector) at max. 3 W
/ 4 Ω, filtered by a 5 kHz lowpass filter. Power-on clicking is eliminated.

Sidetone

Sidetone is a property of Transmit mode only. The sidetone is switched on and off via a bit in the control
register. Its level is controlled to the volume determined by the volume control. The sidetone
attenuation is adjustable between 0 and 25.5

ERASE

Crypto keys and configuration data stored on Radio Controller shall be erased by unauthorized
handling of the device and by user request. For this, the Radio Controller has an H-active ERASE input
signal which must be pulled to GND for normal operation. In order to activate ERASE, the signal must
be disconnected from GND. There are 2 possibilties to activate ERASE mode. The ERASE input is fed
to X26.6 (backplane connector) where it can be connected to X26.44 (ground). The external connection
at X26 is intended to be of short wire length only. A jumper placed on X304 deactives any ERASE
function on X26. The ERASE mode can also be activated by pressing the ERASE button on the Front
Panel.

Ethernet

dBm in steps of 0.1 dB.

On the Motherboard there is a quad port HUB for 10 MBit/s Ethernet communication. Via this HUB the
Radio Controller, R&S

6124.9007.82.01 1.28

GB 4000C and an external remote device like a PC are connected together.

Motherboard - Function R&S M3SR Series 4100 HF Transceivers

Fill Gun

The Fill Gun interface is used to transfer crypto keys and configuration data into the radio. This serial
interface and the serial remote interface of the rear panel share the remote interface of the
Radio Controller. As soon as a Fill Gun is connected it is detected by a level detector. Then the
external remote interface is switched off and the Fill Gun interface is switched on.

RCB Serial / Optical IF

The radio controller communicates to the internal / external Power Amplifier (PA) via the serial RCB.
The external serial RCB is realized as an optical interface by using a fiber optic transceiver with wave
lengths of TX 1310 nm, RX 1530 nm.

-

1.29 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Motherboard - Function

Fig. 1.12 Motherboard, Block Diagram

ot e,
m

R_ON~

audio

Fron tpanel

ON/OFF

ERASE

Ext/Int Speaker

LED's

W

~PTT 1_V28 , +6V _K EY L IN E

COD1, COD0

REM_ERASE

~PTT1_TTL,~PTT_USB,

~PTT_L SB,~PT T_Re

+12V,-12V, +3,3V,+5V

TX_Inhibit, RX_Inhibit

NOGO, ~Squelch, ~PTT_Out

RS232

Rearpan el

K
CL

er

FLASH CPLD

v

Au dio-

Adjust

Fl ash

dri

Sw i t c h-

Ctr l

Erase

REM_P

PON_STATUS

PT T

Logi c

Logic

connector

R/
W

P

3.3V5V12V-12V

-detector
il

er- f a
w

o
P

-3.3V

Powerf ail to RCB

N
A

F

CTRL

PLL

DC-regulators

1,2V

2,5V

3.3_i n t

PGA
F

VCXO

CLK

MABAD

l

PS_PFI

ON/OFF

contro

R
W

HOLD_P

y

switch counter

dela

PS_ON

V
33
V,
28
V,

-12
V,
12
V,

5
V,

3

.

I2CC, I 2CD( I2C-Bus)

3

er
st

a

I2C

M

RCB-Slave

HPSDC

PS_100K_R EF

audio
connector

Frontpanel

LINE_RX_1

LINE_RX_2

LINE_TX_1

LINE_TX_2

Speaker

Headset

Fil lgun

FP_HEADSET

FP_MIC

Interface

Module

4

12

x

Audio SwitchMatri

Fillgun_detect

ERASE_SWITCH

I2CC, I2CD (I 2C-Bus)

Digital

Sel e ct o r

nthesizer
y
S

Frontend

~

C
W

, RDY_FROM_M OD

YNC

VE
I

RB, RCB_R
T

_D7..0

PTT

PON_STA TUS

PS_ON~

ERASE

LINE2_RX

LINE1_RX

LINE2_TX

LINE1_TX

ERASE_SWITCH

Fil lgun_detect

l

ontr o
c

ote
m
re

RS485

data

connector

connector

RS232_TXD, RS232_RXD,

RS232_RTS,RS232_CTS, RS232_DCD

B
RC

RCB_A7..0

RCB_S

RCB_INT, RM B_RESET

3.3V , 5V , 12V , -1 2V , 28V , 33V

er

RCBS

100K _REF

Radi o

Cont rol l er

RCBSer

c

er

i

v

PA

ber opt

i
f

transcei

S
T
C

I1_F

A
_

ESSI1_SCK

NORM_BACK UP,M OD_PROGRAM~

TX

RC_ETH

CP_ETH

HUB

10-BA SE- T

ETH

eth er net

ESSI1_STD1 (agc)

ESSI1_STD ( dds)

RF_AGC_DATA

ESSI1_SRD

ESS

connector

10K H Z _RE F

10MH Z _REF

1.8V, 3.3V , 28 V

3.3V, 5V, 12V , -12V

CP_100K _RE F

or
t

enua

GB4000C

Att

t.
x
e

REF_I N

ICN-S4100-A-E11100-R-D0894-00209-A-01-1

6124.9007.82.01 1.30

Antenna Interface - Function R&S M3SR Series 4100 HF Transceivers

1.3.2.10 Antenna Interface - Function

The Antenna Interface is installed in the Interface Module of the radio. It is available in two versions

Fig. 1.13 and Fig. 1.14):

(see

¾ Model 02 with one BNC connector

¾ Model 03 with two BNC connectors

Connector X2111 is used for RX-in signals only. Transceivers with an external Power Amplifier use
connector X2112 for RX-in and TX-out signals. Receivers can use X2112 as a second antenna input.

Fig. 1.13 Antenna Interface, Mod. 02

ICN-S4100-A-E11100-R-D0894-00210-A-01-1

Fig. 1.14 Antenna Interface, Mod. 03

ICN-S4100-A-E11100-R-D0894-00310-A-01-1

1.31 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers NMEA Interface (Option) - Function

1.3.2.11 NMEA Interface (Option) - Function

This optional module is a standardized NMEA-183 interface (RS422) for connection to an external DSC
controller (Digital Selective Calling). The R&S
controlled audio switch with adjustable control of amplification factors. It allows to connect an audio line
to the radio and to adapt it to the internal radio bus (see

The R&S GS 4102 NMEA Interface provides at the rear of the radio:

¾ RS422 Interface NMEA (TXD, RXD, CTS, RTS) X5011

¾ One transformer-coupled galvanically isolated audio channel X5012

The control logic consists essentially of an FPGA and a FLASH-Memory. To command the FPGA, a
parallel Radio Control Bus (RCB) is connected to the Radio Controller. The FLASH-Memory is used for
configuration data, module parameters and look-up tables. The VCXO (f = 40
is synchronized with a 100

RS422 Interface NMEA

kHz reference sine wave signal from the synthesizer.

GS 4102 NMEA Interface has the function of an RS422

Fig. 1.15).

MHz) of the control logic

The inputs and outputs of the RS422 Interface X5011 are over-current protected and galvanically iso­lated via opto-couplers . The RS422/RS232 converter module converts the RS422 Interface levels into
RS232 levels and visa versa. The RS232 receive data (RXD) and transmit data (TXD) are transferred
to and from the Radio Controller. The RS422 Interface works in the asynchronous mode with hand
shake and a rate of 4800 Baud. The hardware handshake is realized with the FPGA and Radio Control
Bus (RCB).

Audio Channel

The audio channel X5012 can be used as input or output. The direction and amplification are controlled
by the software via the FPGA and the Radio Control Bus (RCB). By means of the variable amplification
it is possible to adapt the different external AF levels to the internal audio bus level of -8
The direction of the audio signal (to or from radio) will be given by the push to talk (PTT) signal coming
from the audio connector X5012 (external).

An incoming audio signal of 0 ±10 dB is fed via a transformer to a digitally adjustable amplifier. By using
two analog switches the audio signal can be switched either to the LSB or USB channel of the internal
radio audio bus (Line1_Tx and Line 2_Tx). The internal switch matrix is controlled by the FPGA via the
RCB.

An audio signal received by the radio can be fed via the LSB or USB channel of the internal radio audio
bus. Via the two audio switches inside the R&S
The output voltage behind the transformer can be adjusted to 0

GS 4102 NMEA Interface the sideband can be chosen.

±10 dB.

dBm nominal.

-

6124.9007.82.01 1.32

NMEA Interface (Option) - Function R&S M3SR Series 4100 HF Transceivers

Fig. 1.15 R&S GS 4102 NMEA Interface, Block Diagram

NMEA-Interface

Connector RS422

X 5011

AF

X 5012

Connector AF

-Interface

RX

TX

CTS

RTS

PTT

15-way SUB- D

opto-coupler

RS422 / RS232

FLASH

FPGA

PWR

RXD

TXD

RCB

Tx_Active

Line1_Tx
Line2_Tx

Line1_Rx
Line2_Rx

internal backplane connector

X21, X22,
X23

ICN-S4100-A-E11100-R-D0894-00211-A-01-1

1.33 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers NMEA Interface (Option) - Function

6124.9007.82.01 1.34

Working Modes and Functions R&S M3SR Series 4100 HF Transceivers

2 Working Modes and Functions

2.1 General

The R&S M3SR Series 4100 150 W HF Transceiver covers the frequency range 1.5 to 30 MHz (TX)
and 0 to 30

MHz (RX). The output power (TX) is 150 W ±1 dB PEP, 100 W ±1 dB CW.

CAUTION

If the ERASE function on backplane connector X26 is not deactivated by the jumper
on X304 of the Motherboard, check the ERASE signal (or short-circuit connector) at
X26.6 and X26.44. These pins shall be connected together, otherwise the radio con

troller will loose its mission-critical data.

-

2.2 Voice Communication

Voice transmission is possible in both digital and analog mode. Depending on the software
configuration, the transceiver is able to operate with signal modulations in the HF band as listed in
Table 2.1 (emission designators according to CCIR).

Table 2.1: Signal Modulations

Type of emission Abbreviation (old) Abbreviation (new, acc. to

WARC 1979)

Amplitude change signalling, no
modulation, Morse telegraphy

Amplitude modulation, double
sideband and carrier

Amplitude modulation, single
sideband and carrier

Single sideband, upper side­band, carrier suppression

CW A1A

AM A3E

AME H3E

USB J3E+

Single sideband, lower side­band, carrier suppression

2.1 6124.9007.82.01

LSB J3E-

R&S M3SR Series 4100 HF Transceivers Voice Communication

Type of emission Abbreviation (old) Abbreviation (new, acc. to

WARC 1979)

Single sideband, upper side­band, modem operation

Single sideband, lower side­band, modem operation

Frequency modulated carrier,
voice transmission

Frequency modulation, FSK
(Frequency Shift Keying), mo
dem operation

Amplitude modulation, inde­pendent sideband, acc. to MIL­STD188-110B, app. F

Amplitude modulation, inde­pendent sideband, modem op­eration, acc. to MIL­STD188-203

Squelch Modes

-

Modem operation USB J2D+

Modem operation LSB J2D-

FM F3E

FSK F1D

ISB B8E

Modem operation ISB B7D

The following squelch functions are incorporated:

¾ Carrier squelch RSSI (Receive Signal Strength Indication)

¾ Signal squelch (tone frequency selectable from a list)

¾ Syllabic squelch (voice operated squelch)

¾ Squelch off

Embedded Digital Voice Services (only in optional R&S SECOM-H mode)

For digital voice transmission two vocoders are implemented as software modules:

¾ The AMBE (Advanced Multiband Excitation) vocoder (plain digital voice) with a code rate of

2400

bit/s.

¾ The MMBE (Mixed Multiband Excitation) vocoder with a code rate of 2400 bit/s.

6124.9007.82.01 2.2

Data Communication R&S M3SR Series 4100 HF Transceivers

2.3 Data Communication

The software-loadable modems provide for data communication in two modes:

¾ Fixed Frequency (direct FSK)

The data interface provides adjustable data rates in steps of 50, 75, 150, 300 and 600 Baud. The
data interface works in transparent mode.

¾ Optional R&S SECOM-H (2.4 kbit/s)

R&S SECOM-H supports data rates of 300, 600, 1200 and 2400 bit/s with FEC

2.4 Radio Built-in Test

The radio is fitted with a Built-in Test Equipment (BITE), performing various self-tests of different
depths. There are four different kinds of built-in tests implemented in the radio:

¾ Power-on Built-in Test (PBIT)

¾ Continuous Built-in Test (CBIT)

¾ Initiated Built-in Test (IBIT)

PBIT starts immediately and automatically when the radio is powered up, a CBIT continuously monitors
essential parameters during operation, and the IBIT is started by the operator. Each of these Built-in
Tests generates error messages for failure diagnosis and entries in the error log. The Built-in Tests also
covers external devices (e.g. accessories) such as power amplifiers.

The BIT results are made available to the operator in different ways:

¾ By indication on the display of a connected control unit (message box) immediately after the error

has been detected.

¾ By means of GO LED on the radio front panel and GO LED on a connected control unit which are

both switched off in case of a FAULT status of the radio.

¾ By means of an error list in the Control Unit menu 'Radio Error List'. The error list holding the last

256 events (start-ups, warnings and errors) with description and time of occurrence to be looked
up in menu 'Radio Error Details'.

For details on indications and starting of IBIT refer to the Operating Manual.

2.3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Radio Control

Fig. 2.1 GO LEDs on Radio Front Panel and on Control Unit

2

ICN-S4100-A-E11100-R-D0894-00017-A-01-1

1 Radio Front Panel LED GO
2 Control Unit LED GO

1

2.5 Radio Control

The Control Unit and the radio Front Panel are the main user interface to control and monitor the radio
operation. The radio as stand-alone table top unit with built-in Control Unit is shown in

Fig. 2.2 Radio with Built-In Control Unit

Fig. 2.2.

2

ICN-S4100-A-E11100-R-D0894-00010-A-01-1

1 Radio Front Panel
2 Built-in Control Unit

The remote control unit is connected to the radio via LAN connector (see Fig. 2.3). For details on
operation of the radio refer to the Operating Manual.

6124.9007.82.01 2.4

1

Cable Connections R&S M3SR Series 4100 HF Transceivers

2.6 Cable Connections

2.6.1 Rear Cabling

Necessary cabling at the rear side:

Fig. 2.3 Rear Cabling

1

6

1 Connector X30 to antenna (TX/RX) with +28 V DC supply for external antenna tuning unit
2 Connector Ground
3 LAN Connector X20 to remote control unit (required for radios without built-in control unit)
4 Connector X26 (connect mating connector with short-circuit of pins X26.6 and X26.44)
5 Connector X31 to external power supply (e.g. R&S IN 4000A or R&S IN 2100)
6 Connector X32 to external battery

2

5

ICN-S4100-A-E11100-R-D0894-00006-A-01-1

4

3

NOTE:

The power cable between connector X31 DC IN (part of the radio) and the relevant connec-

tor of the power supply is available on demand.

¾

Power cable suitable for R&S IN 4000A:

6105.5500.03 and 3552.2543.00 (hinged ferrite core)

¾

R&S IN 2100: on request

Plug hinged ferrite core onto the cable behind the connector to Power Supply

R&S

IN 4000A.

The connector X32 provides for connection of an optional battery (19 ... 31 V, ≤ 25 A). In case of a power
supply failure the system switches automatically to this battery supply.

2.5 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Cable Connections

2.6.2 Front Cabling

Necessary cabling at the front side:

Fig. 2.4 Front Cabling

3

2

1

1 Headset Connector
2 Fill Gun Connector
3 Service Connector

ICN-S4100-A-E11100-R-D0894-00007-A-01-1

6124.9007.82.01 2.6

Test of Equipment Functions R&S M3SR Series 4100 HF Transceivers

3 Test of Equipment Functions

3.1 Test Equipment and Tools

The function tests according to 3.3 - Function Test require the test equipment listed in Table 3.1.

NOTE:

Equivalent test equipment may be used. Special tools are not required.

Table 3.1: List of Test Equipment

Item Test Equipment, Required Data Equipment recom-

mended by R&S

1 Comfort Control Unit (for transceiver

without R&S

2 Power Supply 28 V, 25 A R&S IN 4000A 6105.5500.03

3 Modulation Analyzer R&S FMA 852.8500.52

4 Spectrum Analyzer R&S FSQ8 1155.5001.08

5 2x Signal Generator 1.5 to 30 MHz R&S SMU200A 1141.2005.02

6 Power Meter R&S NRT 1080.9506.02

Power Sensor 100 W R&S NAP-Z7 0350.8214.02

7 Power Attenuator 40 dB, 50 Ω

(>

100 W)

8 Audio Analyzer R&S UPL 1078.2008.06

9 2x Audio Signal Generator

10 Splitter / Combiner conventional workshop

GB 4000C)

R&S GB 4000C 6105.6006.02

conventional workshop
model

model

Ordering Code

11 Digital Multimeter conventional workshop

model

12 Headset with PTT button e.g. R&S GA 015L

conventional workshop
model

3.1 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Equipment Functions

Item Test Equipment, Required Data Equipment recom-

mended by R&S

13 Headphones conventional workshop

model

14 Adapters for connectors conventional workshop

model

Ordering Code

6124.9007.82.01 3.2

Function Test with Built-in Tests R&S M3SR Series 4100 HF Transceivers

3.2 Function Test with Built-in Tests

For operation of the transceiver two failure classes are defined, associated with the following types of
messages:

Warnings:

¾ Operation may go on even if warning messages are displayed.

¾ The radio should be checked as soon as possible.

¾ All active warnings are logged in the failure archive.

Errors:

¾ The radio is no longer in proper working order.

¾ As soon as an error is detected, the LED FAULT lights up.

¾ Error messages remain resident until the fault is eliminated and will be logged in the failure ar-

chive.

Performing Built-in Tests

Carry out the test steps in Table 3.2.

Table 3.2: Built-in Tests

No. Activity Nominal Value

1 PBIT (Power-on Built-In Test)

1.1 Connect a 28 VDC power supply to connector contacts
X31.A1 (+) and X31.A2 (ground).

NOTE:

Note that a 28 VDC supply voltage is available at antenna

connector X30.

Connect a load (50 Ω, > 100 W) to antenna connector X30.

Connect a mating connector to connector X26 with short-cir­cuit of pins X26.6 and X26.44.

If no R&S GB 4000C Comfort Control Unit is installed, con­nect one to LAN connector X20. Connect R&S GB 4000C to
transceiver via default address on MMI choosing Connect
and Enter button.

3.3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Function Test with Built-in Tests

No. Activity Nominal Value

1.2 Switch on the transceiver.

NOTE:

The transceiver now performs the power-on built-in test. In

case of trouble, warnings and/or error messages are

generated, which are important for troubleshooting. They

are indicated later on the display of the external control unit.

Please note that for running the PBIT a coldstart is required.
So when powering the unit down and then up again allow a

break of at least 7 seconds.

2 IBIT (Initiated Built-in Test)

2.1 IBIT can only be started via a R&S GB 4000C Comfort Con­trol Unit. IBIT is a comprehensive test on different Rx and Tx
frequencies. IBIT is started explicitly by softkey actuation in
Menu 3001 Radio MTC 1/6 on the user interface of
R&S GB 4000C (see Operating Manual). It may be aborted
any time and started anew whenever appropriate.

During IBIT, the transmit and receive paths are checked au­tomatically. All LEDs are tested.

NOTE:

LED GO is illuminated

LED AC/DC is illuminated

No error messages are dis­played

LED GO is illuminated

No error messages are dis­played

Perform IBIT only under the following conditions:



Radio operation mode: FIXED FREQUENCY



Communication mode: V/D UNCP (voice/data
unciphered)



Signals Tx Inhibit and Rx Inhibit are not allowed to be
LOW-active at the external interfaces. If these
requirements are not met, an error message may come
up when the IBIT is started. Once IBIT is completed,
reset the transceiver (RESET button).

3 CBIT (Continuous Built-in Test)

3.1 CBIT is performed continuously as soon as the equipment
has entered a communication mode. Test results of CBIT
(Error, Warning, Info) are indicated by LED GO and are also
shown in a message box coming up on the display of the
R&S GB 4000C.

4 Switch off the transceiver and test equipment.

NOTE:

LED GO is illuminated

No error result

If warnings and/or error messages are being displayed during the built-in tests, perform

troubleshooting according to 4 - Troubleshooting.

6124.9007.82.01 3.4

Test of Specification R&S M3SR Series 4100 HF Transceivers

3.3 Test of Specification

CAUTION

Only qualified personnel may perform the following function tests.

For details on connectors and contact assignment see Interface Description in Appendix.

NOTE:

Note that a 28 VDC supply voltage is available at antenna connector X30.

Before checking the transmitter functions, make absolutely sure, that a 50-

meter) is connected at antenna socket X30. Do not switch to transmit mode while the signal

generator is connected to antenna socket X30.

Test equipment and tools for the following function tests are listed in 3.1 - Test Equipment and Tools.

Carry out the test steps in Table 3.3.

load (power

Ω

Table 3.3: R&S M3SR Series 4100 - Test of Specification

No. Activity Nominal Value

1 Preparations

1.1 Arrange the test setup acc. to Fig. 3.1,

connecting the 28 VDC power supply to
connector contacts X31.A1 (+) and X31.A2
(ground).

Connect a mating connector to connector
X26 with short-circuit of pins X26.6 and
X26.44.

If no R&S GB 4000C Comfort Control Unit is
installed, connect one to LAN connector X20.
Connect R&S GB 4000C to transceiver via
default address on MMI choosing Connect
and Enter button.

1.2 Switch on the test equipment and

transceiver.

3.5 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

No. Activity Nominal Value

2 MMI R&S GB 4000C

2.1 Switch transceiver off and on to ensure that

the R&S GB 4000C is connected and
working correctly.

3 Receiver - Sensitivity in J3E Mode

3.1 Set transceiver to Modulation +J3E (upper

sideband), BW = 2.7 kHz.

Connect the signal generator to HF input X30
(ANTENNA).

3.2 Set Digital Selector (if installed) to BYPASS,

Preamp off.

Apply HF level of -112.2 dBm to X30 with
following frequencies:

 15.1 MHz

 27.1 MHz

By using the audio analyzer, measure SINAD
(averaging over 10 values) of audio signal at
X26.11/.41 into 600Ω.

Transceiver off and on

> 10 dB SINAD

3.3 Only if Digital Selector is installed:

Set Digital Selector to SELECTIVE, Preamp
off.

Apply following HF level to X30 with following
frequencies:

 with R&S FK 4120: -107.7 dBm

 with R&S FK 4140: -105.7 dBm

Frequencies:

 15.1 MHz

 27.1 MHz

Measure SINAD (averaging over 10 values)
of audio signal at X26.11/.41 into 600Ω.

> 10 dB SINAD

6124.9007.82.01 3.6

Test of Specification R&S M3SR Series 4100 HF Transceivers

No. Activity Nominal Value

3.4 Set Digital Selector (if installed) to BYPASS,

Preamp on.

Apply HF level of -120 dBm to X30 with
following frequencies:

 1.5 MHz

 10.107 MHz

 20.107 MHz

 27.501 MHz

 29.999 MHz

Measure SINAD (averaging over 10 values)
of audio signal at X26.11/.41 into 600Ω.

3.5 Only if Digital Selector is installed:

Set Digital Selection to SELECTIVE, Preamp
on.

> 10 dB SINAD

> 10 dB SINAD

Apply following HF level to X30 with the fol­lowing frequencies:

 with R&S FK 4120: -108.4 dBm

 with R&S FK 4140: -110.9 dBm

Frequencies:

 1.5 MHz

 10.107 MHz

 20.107 MHz

 27.501 MHz

 29.999 MHz

Measure SINAD (averaging over 10 values)
of audio signal at X26.11/.41 at 600Ω.

3.7 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

No. Activity Nominal Value

4 Receive State A3E - Display, Buttons,

Switches and Controls Check

4.1 Set transceiver to A3E RX mode 15.100 MHz

(Audio Line1 USB is used).

Apply a HF signal to X30 with the following
parameters:

Frequency: 15.100 MHz

HF level: -60 dBm

Modulation: AM

AF: 1 kHz

Modulation depth: 60%

Verify receive level on display.

4.2 Check the volumes of the front panel and

external loudspeaker (X26.32/.36) by
switching INT/EXT button and turning
headphone/speaker knob. To hear front
panel loudspeaker, headphones must not be
plugged in.

10 dBIV

≥

Tone audible

4.3 Turn speaker knob to maximal volume. By

means of INT/EXT button switch manually
from internal to external loudspeaker.

By using the audio analyzer and a 4

Ω

resistor, verify output power between X26.32/
.36.

Switch back to internal loudspeaker.

4.4 Plug in headphones. Check volume variation

of headphones by turning headphone/
speaker knob. Check that internal
loudspeaker is switched off, when
headphones are plugged in.

Plug in headset. Check volume variation of
headset by turning headset knob.

3 W into 4

(AF level about 3.5 V

Ω

RMS

)

Volume changes in audible range

6124.9007.82.01 3.8

Test of Specification R&S M3SR Series 4100 HF Transceivers

No. Activity Nominal Value

5 Squelch Function

5.1 Set transceiver to 29.1 MHz with +J3E

modulation (Default: BW 2,4 kHz, PreAmp
On). Select RSSI squelch ON. Choose RSSI
level 50 dBr.

Apply HF input signal of 29.101 MHz,

-103.5 dBm to X30.

By using the audio analyzer, check the AF
signal between X26.11/.41.

By using the digital multimeter, check SQL
signal on X26.9 (open drain).

5.2 Rise HF input signal to -80 dBm at X30.

Check the AF signal between X26.11/.41. > -40 dBm (AF audio output is present)

Check state of LED SQL. LED SQL is illuminated.

Check SQL signal on X26.9 (open drain). high impedance to GND

6 Audio Interface / B8E Receive

6.1 Set transceiver to mode B8E receive state

10.7 MHz, PreAmp On, AGC On.

Apply 2 HF signals via 2 signal generators
(SG1, SG2) and combiner to X2111 (RX
only), with:

 SG1 (USB): 10.701 MHz

 SG2 (LSB): 10.699250 MHz

< -40 dBm (AF audio output is muted)

low impedance to GND

Frequency: 1 kHz

AF level: 4.0 V

(+3/-2 dB) at 300

RMS

Distortion: < 5 %

Ω

Both signals shall have an HF level of

-80 dBm after combiner.

Turn HEADSET knob to maximal volume.

By using the audio analyzer, check the AF
signal between contacts A and B of HEAD­SET connector (X7).

3.9 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

No. Activity Nominal Value

6.2 Switch to LSB audio source via remote ISB

Frequency: 750 Hz

Select.

AF level: 3.4 V

MS

R

By using the audio analyzer, check the AF
signal between contacts 1 and 2 and

Distortion: < 5 %

between contacts 1 and 3 of HEADPHONE
connector (X6).

6.3 Check the AF signal between X26.11/.41. Frequency: 1 kHz

AF level: 0 dBm (±1 dB) at 600

Distortion: < 1 %

SINAD: > 30 dB

6.4 Check the AF signal between X26.13/.43. Frequency: 750 Hz

AF level: 0 dBm (±1 dB) at 600

Distortion: < 1 %

SINAD: > 30 dB

7 Transmitter - Output Power

(+3 / -2 dB) at 600

Ω

Ω

Ω

7.1 Instead of signal generator connect the

power meter to HF output X30 (ANTENNA).

Connect the headset with PTT key to HEAD­SET connector (X7) at the transceiver front
panel.

Set transceiver to modulation F3E. No
modulating signal at audio input X26.10/.40
of transceiver.

Set HF power to maximal power. Press PTT
key on headset.

Check state of LED RF.

LED RF is illuminated.

6124.9007.82.01 3.10

Test of Specification R&S M3SR Series 4100 HF Transceivers

No. Activity Nominal Value

7.2 Set transceiver to the following TX frequen-

cies and measure the output power:

 1.5 MHz

 2.2 MHz

 3.2 MHz

 4.6 MHz

 6.7 MHz

 9.7 MHz

 14.2 MHz

 20.6 MHz

 27.0 MHz

 29.99 MHz

100 W +1/-0.5 dB

3.11 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

No. Activity Nominal Value

8 Harmonic Emissions

8.1 Set transceiver to modulation F3E without

modulation. No modulating signal at audio in­put X26.10/.40 of transceiver.

Set transceiver to the following TX
frequencies. By using the spectrum analyzer,
measure harmonic emissions related to the
TX frequencies:

 1.5 MHz

 2.2 MHz

 3.2 MHz

 4.6 MHz

 6.7 MHz

 9.7 MHz

 14.2 MHz

 20.6 MHz

TX power set to 10 mW:

-40 dBc

≤

TX power set to 100 W:

-45 dBc

≤

 27.0 MHz

 29.99 MHz

The greater harmonic product (first or
second) must be below the test value.

9 Max. Current Consumption in Transmit

State Mode F3E

9.1 Set transceiver to modulation F3E and

frequency of 15.100 MHz.

Set HF power to maximal power. Press PTT
key on headset.

Check maximal power consumption.

I < 14.3 A at 28 VDC

6124.9007.82.01 3.12

Test of Specification R&S M3SR Series 4100 HF Transceivers

No. Activity Nominal Value

10 PTT Interface / Audio Matrix / B8E

Transmit

10.1 Set HF power to 100 W. Set transceiver to

mode B8E, TX-frequency 10.7 MHz.

By using the audio analyzer, apply AF signal
of 1 kHz, 0 dBm to X26.10/.40 (Line In USB).

Apply AF signal of 750 Hz, 0 dBm to X26.12/
.42 (Line In LSB).

Set X26.8 (USB_PTT) to GND.

By using the power meter and modulation an­alyzer, check HF Signal at X30.

10.2 Keep X26.8 and set additional X26.23

(LSB_PTT) to GND.

Check HF Signal at X30.

10.3 Command -20 dB Sidetone attenuation.

Verify default USB audio on Headset/
Speaker.

> 40 dBm

10.701 MHz (USB)

> 40 dBm

10.699250 MHz (LSB)

10.701 MHz (USB)

-20 dB side tone is to be heard.

By using the audio analyzer, check the AF
signal between contacts A and B of HEAD­SET connector (X7).

Check the AF signal between 1 and 2 of
HEADPHONE connector (X6).

Release X26.8 and X26.23 (USB and LSB
PTT).

Frequency: 1 kHz

AF level: 0.4 V

RMS

Frequency: 1 kHz

AF level:

0.34 V

(+3 / -1 dB) at 600

RMS

(+3 / -1 dB) at 300

Ω

Ω

3.13 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

No. Activity Nominal Value

11 X10 External Synchronization Mode

11.1 By using the signal generator, apply HF

signal of 10 MHz sinus and 0 dBm to X10.

Choose External Sync Mode (OSC-Button)
via remote interface. Press PTT.

Repeat test with 1 MHz and 5 MHz sinus.

Change back to Internal Sync Mode.

12 Fill Gun and Erase-Function

12.1 Connect Fill Gun to the transceiver and press

"Fill Gun" on MMI, choose configuration with
"RGA" Button.

Press "Load" button. Verify load on MMI.
Command J3E+, 28.123 MHz to transceiver
and read back these parameters to confirm.

12.2 On front panel press Erase button for 1 s.

Verify erase.

13 X21 RCB Serial (Fibre Optic) / Remote

Power On Function

RF-TX-signal is present.

No External Sync Error

Download 100 %, no Download Error

Parameters confirmed

MMI shows default FF RX-state in F3E

25.250 MHz

13.1 Connect Optical to Coaxial Converter Box to

RCB Serial Connector X21 and switch
transceiver remotely on and off.

14 DC Voltages

14.1 By using the digital multimeter, verify DC

voltages at X 26.

15 X24 Serial Connection REMOTE

15.1 Set X24 Serial Connection for serial remote

control to parameters 19200 Baud, 8N1,
COM1.

Before the transceiver can be controlled via
serial interface, the interface has to be
initialized, i.e. opened using the opening
request O, <LF(Ctrl j)>O<CR>.

Transceiver on and off

contact 1: 12 VDC ±10 %

contact 2: -12 VDC ±10 %

contact 31: 5 VDC ±10 %

The transceiver confirms the opening by an­swering with opening confirmation "o".

6124.9007.82.01 3.14

Test of Specification R&S M3SR Series 4100 HF Transceivers

No. Activity Nominal Value

16 X26 Serial Connection DATA Terminal 2 /

FSK Test

16.1 Set transceiver to F1D (FSK) modulation

(default values).

Set X26.37 (PTT1_V28) to +12 VDC.

Apply +12.0 VDC to X26.33 (TXD2).

By using the digital multimeter, verify DC volt­age at X26.19.

Apply -12.0 VDC to X26.33 (TXD2).

Verify DC voltage at X26.19. < -3.0 VDC

Release X26.37 (PTT1_V28) to open.

17 X5011/X5012 GS4102 NMEA/DSC Inter-

face Test (optional)

17.1 Connect a DSC Controller to the NMEA

Interface and check if control of transceiver is
taken over in transceiver Maintenance Menu
MTC#3.

NOTE:

In the case of deviations from the nominal values, perform troubleshooting according to

4 - Troubleshooting.

> +3.0 VDC

Control of transceiver is taken over.

3.15 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Test of Specification

Power Supply

28 V, 25 A

R&S IN 4000A

DUT

Power

Meter

Power
Attenuator
40 dB
>100 W/50

Audio

Sig. Generator

Audio

Analyzer

Signal

Generator 2

Spectrum

Analyzer

Modulation

Analyzer

Splitter

Combiner

X31

X26.10/.12

X26.40/.42

X

26.11/.13

X26.41/.43

X2111

X30

U

SB

LSB

AF

RF

RF

RF

in

out

in

in

S

1

2

Signal

Generator 1

RF

out

Signal

Generator 1

RF

out

X10

ICN-S4100-A-E11100-R-D0894-00131-A-01-1

Fig. 3.1 Test Setup

6124.9007.82.01 3.16

Troubleshooting R&S M3SR Series 4100 HF Transceivers

4 Troubleshooting

4.1 Visual Inspection

CAUTION

If a connector shows any discoloration caused by heat, its mating connector is also

defective and must also be replaced.

Check the following:

1. Check the external wiring between the transceiver and the external equipment.

2. Check if all connectors are plugged in firmly.

3. Check the power supply cable and the RF coaxial cables at the rear for mechanical damage.

If necessary, replace cables by new ones one by one until the defective connection has been found.

4.2 Troubleshooting

4.2.1 Troubleshooting with Built-in Tests Results

The following table (Table 4.1) lists all error messages concerning the R&S M3SR Series 4100
150 W HF Tranceivers, which can occur while performing the built-in tests according to 3.2 - Function
Test with Built-in Tests.

If an error message occurs:

 Switch the transceiver off and on again.

 Perform the built-in tests again.

 If the error message remains stable, replace the appropriate module(s) / device(s) according to

5.1 - Disassembly and perform the built-in tests again.

4.1 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Troubleshooting

Table 4.1: Error Messages of R&S M3SR Series 4100 150 W HF Transceivers

Message Module(s) / Device(s) to be Replaced and/or Action

from Radio Controller

RC RCB PA Motherboard (Radio Controller, if further RCB failures are detected)

RC RCB FE Frontend (Radio Controller, if further RCB failures are detected)

RC RCB SYN Synthesizer (Radio Controller, if further RCB failures are detected)

RC RCB DLI Replace that optional board (accessible from the back side of the

transceiver), replace Radio Controller, if other RCB failures are
detected as well.

RC REFCLK 10 KHZ Frontend, Radio Controller

RC CLK 9600 KHZ Frontend, Radio Controller

RC FE FSYN Frontend, Radio Controller

RC RF AGC DATA Frontend, Radio Controller

RC UNLOCK FPGA Radio Controller

RC DSP1/2 COM Radio Controller

RC ESSI LOOPBACK Radio Controller

RC +5 V ANALOG Radio Controller.

RC +3 V ANALOG Radio Controller

RC +1.8 V Radio Controller

RC +6 V ANALOG Radio Controller

RC +3.3 V Radio Controller

RC +5 V Radio Controller

RC LOW BACKUP BATT Backup Battery on Radio Controller

RC DSP1 DWNLOAD Radio Controller

RC DSP2 DWNLOAD Radio Controller

RC COPROC Radio Controller

from Power Amplifier

E2PA 1.5V Power Amplifier

E2PA 3.3V Power Amplifier

E2PA 5V Power Amplifier

E2PA VAMP Power Amplifier

E2PA -12 V Power Amplifier

6124.9007.82.01 4.2

Troubleshooting R&S M3SR Series 4100 HF Transceivers

Message Module(s) / Device(s) to be Replaced and/or Action

E2PA 12 V Power Amplifier

E2PA VREF Power Amplifier

E2PA QUIESCURRENT Power Amplifier

E2PA EEPROM Power Amplifier

E2PA DRIVE, NO POUT Power Amplifier

E2PA NO DRIVE Check RF cabling to Power Amplifier, check Frontend or Digital

Selector.

E2PA DUMMY LOAD Not critical for operation, only needed for IBIT. Replace Power

Amplifier.

E2PA ALC Power Amplifier

E2PA COM Power Amplifier RCB communication problem, check cabling.

E2ATU NO HF Check RF cabling, repeat tune, replace Power Amplifier or Antenna

Tuning Unit.

E2ATU CPU BOOT Take care of correct download, using the Customer CD and Update

Tool. If behaviour persists, replace Antenna Tuning Unit.

E2ATU EEPROM Active tuning is still possible, but no ATU Learn Procedure or “Silent

Tune”, replace Antenna Tuning Unit.

from Synthesizer

SYN UNLOCK LO1 Synthesizer

SYN UNLOCK LO2 Synthesizer

SYN PLL CLEAN UNLOCK Synthesizer

SYN UNLOCK 10MHZ Synthesizer

SYN LO1 LOW LEVEL Synthesizer

SYN LO2 LOW LEVEL Synthesizer

SYN VCC Synthesizer

SYN LO1 DAC Synthesizer

SYN FLASH Synthesizer

SYN VCO Synthesizer

SYN OCXO DAC Synthesizer

from Frontend

FE PWR 1STLO Synthesizer, Frontend

FE IF LOOPBACK Frontend

4.3 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Troubleshooting

Message Module(s) / Device(s) to be Replaced and/or Action

FE PLL LOCK Frontend

FE CHECKSUM Frontend

FE PREAMP Frontend

FE VCC Frontend

from Motherboard

MB 3.3V INT Motherboard

MB 1.8V Motherboard

MB 5V INT Motherboard

MB 5 V ANALOG Motherboard

MB 2.5V Motherboard

MB 1.8 V TO RC Motherboard

MB 1.2 V TO FPGA Motherboard

MB BATU Motherboard

from Digital Selector

DS NO DRIVE Check RF cabling, replace Frontend and/or Digital Selector

DS BP NO POUT Digital Selector

DS BP1 SUPPLY Digital Selector

DS BP2 SUPPLY Digital Selector

DS CU SUPPLY1 Digital Selector

DS CU SUPPLY2 Digital Selector

DS CLK UNLOCK Digital Selector

DS DEF TLD Operation is possible, restrictions only at extreme temperature. Re-

place Digital Selector with next service.

DS CRC Digital Selector

from Power Supply (within Power Amplifier)

PS 5V Power Amplifier

PS 3.3V Power Amplifier

PS 8V TO PA DRIVER Power Amplifier

PS -6.5V Power Amplifier

PS 22 V Power Amplifier

6124.9007.82.01 4.4

Troubleshooting R&S M3SR Series 4100 HF Transceivers

Message Module(s) / Device(s) to be Replaced and/or Action

PS 28V TO PA RIGHT Power Amplifier

PS 28V TO PA LEFT Power Amplifier

PS 28V TO X33 Check external cabling at connector X33, replace Power Amplifier.

PS -12V Power Amplifier

PS 12V Power Amplifier

PS 33V Power Amplifier

PS MAIN INPUT Check external 28 V power supply or cabling between that supply and

connector X31, check sensor lines on connector X31 as well.

PS VLIM Power Amplifier

from NMEA Interface

DSC PLL UNLOCK NMEA Interface

If one or more of the following error messages are displayed, check the correct connection of the
appropriate module:

 FE NOT DETECTED

 SYNTH NOT DETECTED

 PA NOT DETECTED

 MB NOT DETECTED

If one or more of the following error messages are displayed, replace the internal R&S GB 4000C
Comfort Control Unit according to 5.8 - Removal and Installation:

 READBACK ALTERA ERROR

 READBACK EPSON ERROR

 28 V OUT OF RANGE

 12 V OUT OF RANGE

 5 V OUT OF RANGE

 3.3 V OUT OF RANGE

 2.2 V OUT OF RANGE

 -12 V OUT OF RANGE

 FPGA PLL ERROR

4.5 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Troubleshooting

4.2.2 Troubleshooting after Testing the Specification

In the case of deviations from the nominal values while testing the specification according to

3.3 - Function Test refer to Table 4.2 for fault diagnosis. The troubleshooting assumes that the
troubleshooting/fault removal with the Built-in Tests was previously carried out.

Replace the module(s) / device(s) concerred according to 5.1 - Disassembly and perform the test of
specification again.

Table 4.2: Fault Diagnosis

Failure in 3.3 - Function Test Module(s) / Device(s) to be Replaced

Test
Step

-2- MMI R&S GB 4000C R&S GB 4000C

-3- Receiver - Sensitivity in J3E Mode Frontend, Digital Selector (if installed)

-4- Receive State A3E - Display, Buttons, Switches

-5- Squelch Function Frontend

-6- Audio Interface / B8E Receive Front Panel, Motherboard

Test

Motherboard (10-Base-T Hub), Radio
Controller

A3E RX mode, Display:

and Controls Check

Frontend, Radio Controller

Buttons, switches and controls:

Front Panel, button, switch, control,
loudspeaker

LED SQL (Front Panel)

-7- Transmitter - Output Power Power Amplifier, if output power of
Frontend at X1 is 10 dBm ± 1.2 dB,
otherwise Frontend

Digital Selector, if installed. This can be
tested by connecting X313 to X314.

LED RF (Front Panel)

-8- Harmonic Emissions Power Amplifier

-9- Max. Current Consumption in Transmit State

Mode F3E

-10- PTT Interface / Audio Matrix / B8E Transmit Motherboard

6124.9007.82.01 4.6

Power Amplifier

Troubleshooting R&S M3SR Series 4100 HF Transceivers

Failure in 3.3 - Function Test Module(s) / Device(s) to be Replaced

Test
Step

-11- X10 External Synchronization Mode Synthesizer, Motherboard (Attenuator)

-12- Fill Gun and Erase-Function Fill Gun:

-13- X21 RCB Serial (Fibre Optic) / Remote Power

Test

Front Panel (fuse F1, 1 A), if voltage at
contact 20 against contact 16 (ground)
of FILL connector (X5) is not present
(10 VDC ≤U≤33 VDC).

Radio Controller

Motherboard (Fill Gun detect)

Erase Function:

Front Panel (button), Motherboard,
Radio Controller

Motherboard

On Function

-14- DC Voltages Power Amplifier (Power Supply)

-15- X24 Serial Connection REMOTE Radio Controller

-16- X26 Serial Connection DATA Terminal 2 / FSK
Test

-17- X5011/X5012 GS4102 NMEA/DSC Interface
Test (optional)

Frontend

NMEA Interface

4.7 6124.9007.82.01

R&S M3SR Series 4100 HF Transceivers Troubleshooting

4.2.3 Meaning of LED Indications on the Synthesizer

The red, yellow and green LEDs are provided for local diagnostics. All interrupts routed in this module
and the internal behaviour are indicated by the LEDs. For meaning of LED indications see Table 4.3.

Table 4.3: LED Indications

LED Meaning

 Red LED – Error

The red LED is blinking slowly
(one on-off cycle per second,
50% duty cycle)

(green LED is off, red and
yellow LEDs may be blinking
simultaneously)

 Yellow LED – Warning

The yellow LED is blinking
slowly (one on-off cycle per
second, 50% duty cycle)

(green LED is off, red and
yellow LEDs may be blinking
simultaneously)

 Green LED – OK

The green LED is blinking
slowly (one on-off cycle per
second, 50% duty cycle)

 Module has not finished its module configuration, e.g.

initialization of components such as A/D converter of
temperature sensor.

 Module has detected an error. Error means that the module

seems to have an hardware defect and must be repaired.

Warning is detected. Warning means, that something in the
module is in an abnormal status, but the basic module tasks still
work (maybe with reduced functionality). Examples:

 PLL for FPGA clock not locked

 RF Overload at antenna connector

 Temperature too high

Everything is okay, no error has occurred

(Red and yellow LEDs are off)

6124.9007.82.01 4.8