Rohde&Schwarz FSH service manual

Test and Measurement
Division

Service Manual

Handheld Spectrum Analyzer
R&S FSH

1145.5850.03

1145.5850.06

1145.5850.13

1145.5850.23

1145.5850.26

1145.5973.82-05- 1

Dear Customer,
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. K G .

Trade names are trademarks of the owners.

1145.5973.82-05- 2

R&S FSH Contents

Contents

Safety Instructions

Certificate of Quality

Spare Parts Express Service
List of R&S Representatives

Contents of Manuals for Spectrum Analyzer R&S FSH
Service and Repair

1 Performance Test.......................................................................................................................1.1

Test Instructions...............................................................................................................................1.1

Measuring Equipment and Accessories ........................................................................................1.1

Performance Test .............................................................................................................................1.2

Checking the frequency accuracy...............................................................................................1.2

Checking the level accuracy and the frequency response..........................................................1.3

Checking the accuracy of the RF attenuator ..............................................................................1.5

Checking the accuracy of the IF gain setting..............................................................................1.6

Checking the displayed average noise floor ...............................................................................1.7

Checking the phase noise...........................................................................................................1.8

Checking the display linearity......................................................................................................1.9

Performance Test Tracking Generator............................................................................................1.11

Checking output level / frequency response.............................................................................1.11

Performance Test Report...............................................................................................................1.12

Performance Test Report Tracking Generator ............................................................................1.19

1145.5973.82 I.1 E-5

Contents R&S FSH

2 Adjustment....................................................................................................................................2.1

Quick Verification.............................................................................................................................2.1

Measurement Equipment and Accessories for Quick Verification..............................................2.2

Verifying on/off functionality........................................................................................................2.2

Verifying power and AF connections .........................................................................................2.2

Verifying the display....................................................................................................................2.3

Verifying the level and noise.......................................................................................................2.3

Verify the tracking generator output level ...................................................................................2.4

Adjustment functions......................................................................................................2.4

Adjustment ........................................................................................................................................2.5

Adjustment Instructions ..............................................................................................................2.5

Measurement Equipment and Accessories...................................................................................2.6

Adjusting the reference frequency accuracy...............................................................................2.6

Adjusting the level accuracy .......................................................................................................2.7

Frequency Response Correction....................................................................................................2.8

1145.5973.82 I.2 E-5

R&S FSH Contents

3 Repair..............................................................................................................................................3.1

Instrument Design and Functional Description ............................................................................3.1

Description of the block diagram ................................................................................................3.2

Attenuator ...................................................................................................................................3.2

RF to IF conversion.....................................................................................................................3.2

Tracking generator (Model 1145.5850.13/23/26 only)................................................................3.4

RF/IF control...............................................................................................................................3.4

Mainboard...................................................................................................................................3.4

Power and battery management.................................................................................................3.4

Processing of measured data detectors .....................................................................................3.5

Resolution bandwidths (RBW)....................................................................................................3.5

Video bandwidths (VBW)............................................................................................................3.5

Detectors.....................................................................................................................................3.6

Keypad control............................................................................................................................3.6

Serial optical interface.................................................................................................................3.6

Power sensor..............................................................................................................................3.6

Color LCD module ......................................................................................................................3.6

Module Replacement........................................................................................................................3.7

Overview of the modules ............................................................................................................3.9

Opening the instrument.............................................................................................................3.10

Closing the instrument..............................................................................................................3.10

Replacing the battery................................................................................................................3.11

Replacing the housing ..............................................................................................................3.12

Replacing the front unit for R&S FSH.......................................................................................3.13

Replacing the Color LCD Module .............................................................................................3.14

Replacing the RF/IF module.....................................................................................................3.15

Replacing the mainboard..........................................................................................................3.16

Replacing the N connector........................................................................................................3.17

Replacing the binder and BNC connector block .......................................................................3.18

Replacing the power/audio connections ...................................................................................3.19

Replacing a cable from the cable set........................................................................................3.20

Troubleshooting.............................................................................................................................3.21

Overview of errors, causes, and possible corrective actions....................................................3.22

Troubleshooting problems in switching on the instrument...........................................3.22

1145.5973.82 I.3 E-5

Contents R&S FSH

4 Software Updates / Installing Options ..............................................................................4.1

Installing New R&S FSH Software ..................................................................................................4.1

Installing the Options.......................................................................................................................4.1

5 Documents....................................................................................................................................5.1

Shipping of Instrument and Ordering of Spare Parts...................................................................5.1

Shipping of instrument................................................................................................................5.1

Shipping of a module ..................................................................................................................5.1

Ordering spare parts...................................................................................................................5.2

Refurbished modules..................................................................................................................5.2

Return of defective replaced modules........................................................................................5.2

Spare Parts........................................................................................................................................5.3

1145.5973.82 I.4 E-5

Safety Instructions

This unit 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, the user must observe all instructions and warnings
given in this operating manual.

Safety-related symbols used on equipment and documentation from R&S:

Observe op-

erating in-

structions

1. The unit may be used only in the operating con­ditions and positions specified by the manufac­turer. Unless otherwise agreed, the following
applies to R&S products:

IP degree of protection 2X, pollution severity 2

overvoltage category 2, only for indoor use, alti­tude max. 2000 m.

The unit may be operated only from supply net-

works fused with max. 16 A.

Unless spec ified otherwise in the data sheet, a

tolerance of ±10% shall apply to the nominal
voltage and of ±5% to the nominal frequency.

2. For measurements in circuits with voltages V
> 30 V, suitable measures should be taken to
avoid any hazards.

(using, for example, appropriate measuring

equipment, fusing, current limiting, electrical
separation, insulation).

3. For permanently installed units without built-in
fuses, circuit breakers or similar protective de­vices, the supply circuit must be fused such as
to provide suitable protection for the users and
equipment.

4. Prior to switching on the unit, it must be ensured
that the nominal voltage set on the unit matches
the nominal voltage of the AC supply network.

If a different voltage is to be set, the power fuse

of the unit may have to be changed accordingly.

5. If the unit 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 (length of connecting cable approx. 2 m).
Functional or electronic switches are not suit­able for providing disconnection from the AC
supply.

If units without power switches are integrated in

racks or systems, a disconnecting device must
be provided at system level.

Weight

indication for

units >18 kg

PE terminal Ground

terminal

Danger!

Shock hazard

6. Applicable local or national safety regulations
and rules for the prevention of accidents must
be observed in all work performed.

Prior to perf orming any work on the unit or open-

ing the unit, the latter must be disconnected
from the supply network.

Any adjustments, replacements of parts, main-

tenance or repair may be carried out only by au­thorized R&S technical personnel.

Only original parts may be used for replacing

parts relevant to safety (eg power switches,
power transformers, fuses). A safety test must

rms

be performed after each replacement of parts
relevant to safety.

(visual inspection, PE conductor test, insulation-

resistance, leakage-current measurement, func­tional test).

7. Ensure that the connections with information
technology equipment comply with IEC950 /
EN60950.

8. NiMH batteries must not be exposed to high
temperatures or fire.

Keep batteries away from children.
If the battery is replaced improperly, there is

danger of explosion. Only replace the battery by
R&S type (see spare part list).

NiMH batteries are suitable for environmentally-

friendly disposal or specialized recycling. Dis­pose them into appropriate containers, only.

Do not short-circuit the battery.

9. Equipment returned or sent in for repair must be
packed in the original packing or in packing with
electrostatic and mechanical protection.

10.

Electrostatics via the connectors may dam-

Warning!

Hot surfaces

Ground

age the equipment. For the safe handling and
operation of the equipment, appropriate
measures against electr ostatics should be im­plemented.

Attention!

Electrostatic
sensitive de­vices require

special care

Safety Instructions

11. The outside of the instrument is suitably
cleaned using a soft, lint-free dustcloth. Never
use solvents such as thinners, acetone and
similar things, as they may damage the f ront
panel labeling or plastic parts.

12. Any additional safety instructions given in this
manual are also to be observed.

Certified Quality System

Certified Environmental System

ISO 9001

DQS REG. NO 1954 QM

Qualitätszertifikat

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 Qualitäts­managementsystems entwickelt, gefer­tigt und geprüft. Das Rohde & Schwarz­Qualitätsmanagementsystem ist u.a. nach
ISO 9001 und ISO14001 zertifiziert.

ISO 14001

Certificate of quality

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 stan­dards such as ISO9001 and ISO14001.

DQS REG. NO 1954 UM

Certificat de qualité

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, entre autres, conformément
aux normes ISO 9001 et ISO14001.

Spare Parts Express Service

Phone: [phone] - 12465

Fax: +49 89 41

E-mail:[e-mail]

29 - 13306

In case of urgent spare parts requirements for this Rohde &
Schwarz unit, please contact our spare parts express
service.

Outside business hours, please leave us a message or
send a fax or e-mail. We shall contact you promptly.

1007.9016

Adressen/Addresses

FIRMENSITZ/HEADQUARTERS

Rohde & Schwarz GmbH & Co. KG
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 69 · D-81614 München

WERKE/PLANTS

Rohde & Schwarz Messgerätebau GmbH
Riedbachstraße 58 · D-87700 Memmingen
Postfach 1652 · D-87686 Memmingen

Rohde & Schwarz GmbH & Co. KG
Werk Teisnach
Kaikenrieder Straße 27 · D-94244 Teisnach
Postfach 1149 · D-94240 Teisnach

Rohde & Schwarz GmbH & Co. KG
Dienstleistungszentrum Köln
Graf-Zeppelin-Straße 18 · D-51147 Köln
Postfach 98 02 60 · D-51130 Köln

TOCHTERUNTERNEHMEN/

Rohde & Schwarz Vertriebs-GmbH
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 69 · D-81614 München

Rohde & Schwarz International GmbH
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 60 · D-81614 München

Rohde & Schwarz Engineering and Sales
GmbH
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 29 · D-81614 München

R&S BICK Mobilfunk GmbH
Fritz-Hahne-Str. 7 · D-31848 Bad Münder
Postfach 2062 · D-31844 Bad Münder

Rohde & Schwarz FTK GmbH
Wendenschlossstraße 168, Haus 28
D-12557 Berlin

Rohde & Schwarz SIT GmbH
Agastraße 3
D-12489 Berlin

ADRESSEN DEUTSCHLAND/
ADDRESSES GERMANY

Rohde & Schwarz Vertriebs-GmbH
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 69 · D-81614 München

Zweigniederlassungen der Rohde &
Schwarz Vertriebs-GmbH/Branch offices of
Rohde & Schwarz Vertriebs-GmbH

Zweigniederlassung Nord, Geschäftsstelle
Berlin
Ernst-Reuter-Platz 10 · D-10587 Berlin
Postfach 100620 · D-10566 Berlin

Zweigniederlassung Büro Bonn
Josef-Wirmer-Straße 1-3 · D-53123 Bonn
Postfach 140264 · D-53057 Bonn

Zweigniederlassung Nord, Geschäftsstelle
Hamburg
Steilshooper Alle 47 · D-22309 Hamburg
Postfach 60 22 40 · D-22232 Hamburg

Zweigniederlassung Mitte, Geschäftsstelle
Köln
Niederkasseler Straße 33 · D-51147 Köln
Postfach 900 149 · D-51111 Köln

Phone

Fax

E-mail

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[e-mail]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]

[phone]

[phone]
[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]
[phone]

[phone]

[phone]

[phone]

[phone]

-

-

-

-

-

-

-

-

-

-

-

-

-

Algeria

Argentina

Australia

Austria

Azerbaijan

Countries

Bangladesh

Belgium

Brazil

Brunei

Bulgaria

Herzegovina

Zweigniederlassung Süd, Geschäftsstelle
München
Mühldorfstraße 15 · D-81671 München
Postfach 80 14 69 · D-81614 München

Zweigniederlassung Süd, Geschäftsstelle
Nürnberg
Donaustraße 36
D-90451 Nürnberg

Zweigniederlassung Mitte, Geschäftsstelle
Neu-Isenburg
Siemensstraße 20
D-63263 Neu-Isenburg

ADRESSEN WELTWEIT/
ADDRESSES WORLDWIDE

siehe / see AustriaAlbania

ROHDE & SCHWARZ
Bureau d'Alger
5B Place de Laperrine
16035 Hydra-Alger

PRECISION ELECTRONICA S.R.L.
Av. Pde Julio A. Roca 710 - 6° Piso
(C1067ABP) Buenos Aires

ROHDE & SCHWARZ (AUSTRALIA) Pty. Ltd.
Sales Support
Unit 6
2-8 South Street
Rydalmere, N.S.W. 2116

ROHDE & SCHWARZ-ÖSTERREICH
Ges.m.b.H.

Am Euro Platz 3
Gebäude B
1120 Wien

ROHDE & SCHWARZ Azerbaijan
Liaison Office Baku
ISR Plaza
340 Nizami Str.
370000 Baku

siehe / see DenmarkBaltic

BIL Consortium Ltd.
Corporate Office
House-33, Road-4, Block-F
Banani
Dhaka-1213

ROHDE & SCHWARZ BELGIUM N.V.
Excelsiorlaan 31 Bus 1
1930 Zaventem

ROHDE & SCHWARZ DO BRASIL LTDA.
Av. Alfredo Egidio de Souza Aranha n° 177,
1° andar - Santo Amaro
04726-170 Sao Paulo - SP

GKL Equipment PTE Ltd.
#11-01 BP Tower
396 Alexandra Road
Singapore 119954

ROHDE & SCHWARZ ÖSTERREICH
Representation Office Bulgaria
39, Fridtjof Nansen Blvd.
1000 Sofia

siehe / see SloveniaBosnia-

[e-mail]

[e-mail]

[e-mail]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[e-mail]-

[e-mail]-

[e-mail]

[phone] (general)

[phone] (sales)

schwarz.com

[phone]

[phone]

[phone]
[phone]

Schwarz.com

[phone]
[phone]

[phone]
[phone]

[phone]

[e-mail]-

schwarz.com

[phone]
[phone]

[e-mail]

[phone]
[phone]

-

-

-

Adressen/Addresses

Canada

Canada

Chile

China

China

China

China

China

China

China

China

China

Cyprus

Czech Republic

ROHDE & SCHWARZ CANADA Inc.
555 March Rd.
Kanata, Ontario K2K 2M5

TEKTRONIX CANADA Inc.
Test and Measurement
4929 Place Olivia
Saint-Laurent, Pq
Montreal H4R 2V6

DYMEQ Ltda.
Av. Larrain 6666
Santiago

ROHDE & SCHWARZ China Ltd.
Representative Office Shanghai
Central Plaza
227 Huangpi North Road
RM 807/809
Shanghai 200003

ROHDE & SCHWARZ China Ltd.
Representative Office Beijing
Room 602, Parkview Center
2 Jiangtai Road
Chao Yang District
Beijing 100016

ROHDE & SCHWARZ China Ltd.
Representative Office Guangzhou
Room 2903, Metro Plaza
183 Tianhe North Road
Guangzhou 510075

ROHDE & SCHWARZ China Ltd.
Representative Office Chengdu
Unit G, 28/F, First City Plaza
308 Shuncheng Avenue
Chengdu 610017

ROHDE & SCHWARZ China Ltd.
Unit 3115
31/F Entertainment Building
30 Queen's Road Central
Hongkong

ROHDE & SCHWARZ China Ltd.
Representative Office Xi'an
Room 10125, Jianguo Hotel Xi'an
No. 2, Huzhu Road
Xi'an 710048

ROHDE & SCHWARZ China Ltd.
Representative Office Shenzhen
No. 2002 Jiabin Road
Luohu District
Shenzhen 518001

Shanghai ROHDE & SCHWARZ
Communication Technology Co.Ltd.

Beijing ROHDE & SCHWARZ Communication
Technology Co.Ltd.
Room 106, Parkview Centre
No. 2, Jiangtai Road
Chao Yang District
Beijing 100016

siehe / see SloveniaCroatia

HINIS TELECAST LTD.
Agiou Thoma 18
Kiti
Larnaca 7550

ROHDE & SCHWARZ - Praha s.r.o.
Hadovka Office Park
Evropská 33c
16000 Praha 6

[e-mail]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]-

[phone] to 09

[e-mail]

[e-mail]

schwarz.com

[phone]
[phone]

[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]
[e-mail]

[phone]
[phone]

Denmark

Ecuador

Egypt

Estonia

Finland

France

France

France

France

France

France

Ghana

Greece

Hong Kong

Hungary

ROHDE & SCHWARZ DANMARK A/S
Ejby Industrivej 40
2600 Glostrup

REPRESENTACIONES MANFRED
WEINZIERL
Vía Láctea No. 4 y Via Sta. Inés
P.O.Box 17-22-20309
1722 Cumbayá-Quito

U.A.S. Universal Advanced Systems
31 Manshiet El-Bakry Street
Heliopolis
11341 Cairo

siehe / see MexicoEl Salvador

ROHDE & SCHWARZ DANMARK A/S
Estonian Branch Office
Narva mnt. 13
10151 Tallinn

Orbis Oy
P.O.Box 15
00421 Helsinki 42

ROHDE & SCHWARZ FRANCE
Immeuble "Le Newton"
9-11, rue Jeanne Braconnier
92366 Meudon La Forêt Cédex

Niederlassung/Subsidiary Rennes
37 Rue du Bignon
Bât. A
F-35510 Cesson Sevigne

Niederlassung/Subsidiary Toulouse
Technoparc 3
B.P. 501
F-31674 Labège Cédex

Aix-en-Provence [phone]

Office Lyon [phone]

Office Nancy [phone]

KOP Engineering Ltd.
P.O. Box 11012
3rd Floor Akai House, Osu
Accra North

MERCURY S.A.
6, Loukianou Str.
10675 Athens

siehe / see Mexico Guatemala

siehe / see Mexico Honduras

Electronic Scientific Engineering
9/F North Somerset House
Taikoo Place
979 King's Road
Hong Kong

ROHDE & SCHWARZ
Budapesti Iroda
Váci út 169
1138 Budapest

siehe / see DenmarkIceland

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]-

[e-mail]

[e-mail]-

schwarz.com

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]

[phone]

[phone]

[phone]

[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

schwarz.com

-

-

-

Adressen/Addresses

India

India

India

India

Indonesia

Iran

Israel

Israel

Italy

Italy

Japan

Japan

Jordan

ROHDE & SCHWARZ India Pvt. Ltd.
Bangalore Office
No. 24, Service Road, Domlur
2nd Stage Extension
Bangalore - 560 071

ROHDE & SCHWARZ India Pvt. Ltd.
Hyderabad Office
302 & 303, Millenium Centre
6-3-1099/1100, Somajiguda
Hyderabad - 500 016

ROHDE & SCHWARZ India Pvt. Ltd.
244, Okhla Industrial Estate, Phase-III
New Delhi 110020

ROHDE & SCHWARZ India Pvt. Ltd.
RS India Mumbai Office
B-603, Remi Bizcourt, Shah Industrial
Estate, Off Veera Desai Road
Mumbai - 400 058

PT ROHDE & SCHWARZ Indonesia
Graha Paramita 5th Floor
Jln. Denpasar Raya Blok D-2
Jakarta 12940

ROHDE & SCHWARZ IRAN
Groundfloor No. 1, 14th Street
Khaled Eslamboli (Vozara) Ave.
15117 Tehran

siehe / see United KingdomIreland

EASTRONICS LTD.
Messtechnik / T&M Equipment
11 Rozanis St.
P.O.Box 39300
Tel Aviv 61392

J.M. Moss (Engineering) Ltd.
Kommunikationstechnik/ Communications
Equipment
9 Oded Street
P.O.Box 967
52109 Ramat Gan

ROHDE & SCHWARZ ITALIA S.p.a.
Centro Direzionale Lombardo
Via Roma 108
20060 Cassina de Pecchi (MI)

ROHDE & SCHWARZ ITALIA S.p.a.
Via Tiburtina 1182
00156 Roma

Rohde & Schwarz
Support Center Japan K.K.
711 bldg., Room 501 (5th floor)
7-11-18 Nishi-Shinjuku
Shinjuku-ku
Tokyo 160-0023

ADVANTEST
Sales Promotion Department
Shinjuku-NS bldg.
2-4-1, Nishi-Shinjuku
Shinjuku-ku
Tokyo 160-0880

Jordan Crown Engineering & Trading Co.
Jabal Amman, Second Circle
Youssef Ezzideen Street
P.O.Box 830414
Amman, 11183

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]-schwarz

[phone]
[phone]

[e-mail]

[phone]

[e-mail]

[e-mail]

Akihiko Yoshimura/RSJP@RSJP

[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]-

[e-mail]

schwarz.com

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[e-mail]

Kazakhstan

Kenya

Korea

Kuwait

Latvia

Lebanon

Lebanon

Lithuania

Malaysia

Malta

Mexico

Mexico

Nepal

Netherlands

ROHDE & SCHWARZ Kazakhstan
Representative Office Almaty
Pl. Respubliki 15
480013 Almaty

Excel Enterprises Ltd
Dunga Road
P.O.Box 42 788
Nairobi

ROHDE & SCHWARZ Korea Ltd.
83-29 Nonhyun-Dong, Kangnam-Ku

Seoul 135-010

Group Five Trading & Contracting Co.
Mezanine Floor
Al-Bana Towers
Ahmad Al Jaber Street
Sharq

ROHDE & SCHWARZ DANMARK A/S
Latvian Branch Office
Merkela iela 21-301
1050 Riga

ROHDE & SCHWARZ
Liaison Office Riyadh
P.O.Box 361
Riyadh 11411

Netcom
P.O.Box 55199
Op. Ex-Presidential Palace
Horsh Tabet
Beirut

siehe / see SwitzerlandLiechtenstein

ROHDE & SCHWARZ DANMARK A/S
Lithuanian Office
Lukiskiu 5-228
2600 Vilnius

siehe / see BelgiumLuxembourg

siehe / see SloveniaMacedonia

DAGANG TEKNIK SDN. BHD.
No. 9, Jalan SS 4D/2
Selangor Darul Ehsan
47301 Petaling Jaya

ITEC International Technology Ltd
B'Kara Road
San Gwann SGN 08

Rohde & Schwarz de Mexico (RSMX)
S. de R.L. de C.V.
German Centre Oficina 4-2-2
Av. Santa Fé 170
Col. Lomas de Santa Fé
01210 Mexico D.F.

Rohde & Schwarz de Mexico (RSMX)
Av. Prol. Americas No. 1600, 2° Piso
Col. Country Club
Guadalajara, Jal.
Mexico CP, 44610

siehe / see RomaniaMoldavia

ICTC Pvt. Ltd.
Hattisar, Post Box No. 660
Kathmandu

ROHDE & SCHWARZ NEDERLAND B.V.
Perkinsbaan 1
3439 ND Nieuwegein

[phone]
[phone]

RS-Kazakhstan@RUS-Rohde-

[e-mail]

[e-mail]

[e-mail]

[phone] Ext. 303
[phone] Ext. 229

[e-mail]

[e-mail]

[phone] or 37 43 29

[e-mail]-

[e-mail]

Schwarz.com

[phone]
[phone]

[phone]
[phone]

[phone]/73/74

[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[phone]
[e-mail]

[phone]
[phone]

schwarz.com

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

Adressen/Addresses

New Zealand

Nigeria

Norway

Oman

Pakistan

Guinea

Philippines

Poland

Portugal

Romania

Russian
Federation

Saudi Arabia

Saudi Arabia

Serbia­Montenegro

Singapore

Nichecom
1 Lincoln Ave.
Tawa, Wellington

siehe / see MexicoNicaragua

Ferrostaal Abuja
Plot 3323, Barada Close
P.O.Box 8513, Wuse
Off Amazon Street
Maitama, Abuja

ROHDE & SCHWARZ NORGE AS
Enebakkveien 302 B
1188 Oslo

Mustafa Sultan Science & Industry Co.LLC.
For Test & Measurement ONLY
Way No. 3503
Building No. 241
Postal Code 112
Al Khuwair, Muscat

Siemens Pakistan
23, West Jinnah Avenue
Islamabad

siehe / see Mexico Panama

siehe / see AustraliaPapua New

Rohde & Schwarz (Philippines) Ltd.
PBCom Tower
Ayala Ave. cor. Herrera Sts.
Makati City/ Philippines

ROHDE & SCHWARZ Österreich SP.z o.o.
Przedstawicielstwo w Polsce
ul. Stawki 2, Pietro 28
00-193 Warszawa

Rohde & Schwarz Portugal, Lda.
Alameda Antonio Sergio
7-R/C - Sala A
2795-023 Linda-a-Velha

ROHDE & SCHWARZ
Representation Office Bucharest
Str. Uranus 98
Sc. 2, Et. 5, Ap. 36
76102 Bucuresti, Sector 5

ROHDE & SCHWARZ
Representative Office Moscow
119180, Yakimanskaya nab., 2
Moscow

Rohde & Schwarz Liaison Office Riyadh
c/o Haji Abdullah Alireza Co. Ltd.
P.O.Box 361
Riyadh 11411

GENTEC
Haji Abdullah Alireza & Co. Ltd.
P.O.Box 43054
Riyadh

Representative Office Belgrade
Tose Jovanovica 7
11030 Beograd

INFOTEL TECHNOLOGIES Ltd.
19 Tai Seng Drive
#02-01 HeShe Building
Singapore 535227

[e-mail]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[phone] Ext. 303

[phone] Ext. 229

[phone]

[phone]
[phone]

+63 (2)
+63 (2)

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone] to 53

[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

general @infotel.com.sg

Singapore

Slovak
Republic

Slovenia

South Africa

South Africa

Spain

Sri Lanka

Sudan

Sweden

Switzerland

Syria

Taiwan

Tanzania

Thailand

Thailand

ROHDE & SCHWARZ
Support Centre Asia PTE Ltd.
1 Kaki Bukit View
#04-05/07 Techview
Singapore 415 941

Specialne systemy a software, a.s.
Svrcia ul.
841 04 Bratislava

ROHDE & SCHWARZ
Representation Ljubljana
Tbilisijska 89
1000 Ljubljana

Protea Data Systems (Pty.) Ltd.
Communications and Measurement Division
Private Bag X19
Bramley 2018

Protea Data Systems (Pty.) Ltd.
Cape Town Branch
Unit G9, Centurion Business Park
Bosmandam Road
Milnerton
Cape Town, 7441

ROHDE & SCHWARZ ESPANA S.A.
Salcedo, 11
28034 Madrid

Dynatel Communications (PTE) Ltd.
451/A Kandy Road
Kelaniya

SolarMan Co. Ltd.
P.O.Box 11 545
North of Fraouq Cementry 6/7/9 Bldg. 16
Karthoum

ROHDE & SCHWARZ SVERIGE AB
Marketing Div.
Flygfältsgatan 15
128 30 Skarpnäck

Roschi Rohde & Schwarz AG
Mühlestr. 7
3063 Ittigen

Electro Scientific Office
Baghdad Street
Dawara Clinical Lab. Bldg
P.O.Box 8162
Damascus

Rohde & Schwarz Taiwan Ltd.
14F, No. 13, Sec. 2, Pei-Tou Road
Taipei

SSTL Group
P.O. Box 7512
Dunga Street Plot 343/345
Dar es Salaam

Schmidt Electronics (Thailand) Ltd.
63 Government Housing Bank Bldg.
Tower II, 19th floor, Rama 9 Rd.
Huaykwang, Bangkapi
Bangkok 10320

TPP Operation Co., Ltd.
41/5 Mooban Tarinee
Boromrajchonnee Road
Talingchan, Bangkok 10170

[e-mail]

[e-mail]

[e-mail]

kamthoninthuyot@schmidtthailand.c

[phone]

[e-mail]

[e-mail]

[e-mail]

[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]

[phone] to 39

[phone]

[phone]
[phone]

om

Adressen/Addresses

&Tobago

Tunisia

Turkey

Ukraine

United Arab
Emirates

United Arab
Emirates

United Arab
Emirates

United
Kingdom

Uruguay

USA

USA

USA

Venezuela

Venezuela

siehe / see MexicoTrinidad

TELETEK
71, Rue Alain Savary
Residence Alain Savary (C64)
1003 Tunis

ROHDE & SCHWARZ International GmbH
Liaison Office Istanbul
Bagdad Cad. 191/3, Arda Apt. B-Blok
81030 Selamicesme-Istanbul

ROHDE & SCHWARZ
Representative Office Kiev
4, Patris Loumoumba ul
01042 Kiev

ROHDE & SCHWARZ International GmbH
Liaison Office Abu Dhabi
P.O. Box 31156
Abu Dhabi

ROHDE & SCHWARZ Bick Mobile
Communication
P.O.Box 17466
Dubai

ROHDE & SCHWARZ Emirates L.L.C.
Ahmed Al Nasri Building, Mezzanine Floor,
P.O.Box 31156
Off old Airport Road
Behind new GEMACO Furniture
Abu Dhabi

ROHDE & SCHWARZ UK Ltd.
Ancells Business Park
Fleet
Hampshire
GU 51 2UZ England

AEROMARINE S.A.
Cerro Largo 1497
11200 Montevideo

ROHDE & SCHWARZ, Inc.
Broadcast & Comm. Equipment
(US Headquarters)
8661-A Robert Fulton Drive
Columbia, MD 21046-2265

Rohde & Schwarz Inc.
Marketing & Support Center / T&M
Equipment
2540 SW Alan Blumlein Way
M/S 58-925
Beaverton, OR 97077-0001

Rohde & Schwarz Inc.
Systems & EMI Products
8080 Tristar Drive
Suite 120
Irving, Texas 75063

EQUILAB TELECOM C.A.
Centro Seguros La Paz
Piso 6, Local E-61
Ava. Francisco de Miranda
Boleita, Caracas 1070

REPRESENTACIONES BOPIC S.A.
Calle C-4
Qta. San Jose
Urb. Caurimare
Caracas 1061

[e-mail]

[e-mail]

[phone]
[phone]

[e-mail]

[phone]
[phone]

[phone]
[phone]

[e-mail]-

[e-mail]

[phone] (sales)

[phone] (service)

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

[e-mail]

schwarz.com

[phone]
[phone]

www.rsbick.de

[phone]
[phone]

[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]
[phone]

[phone]

[phone]

[phone]
[phone]

[e-mail]

Vietnam

Schmidt Vietnam Co., (H.K.) Ltd.,
Representative Office in Hanoi
Intern. Technology Centre
8/F, HITC Building
239 Xuan Thuy Road
Cau Giay, Tu Liem
Hanoi

siehe / see MexicoWest Indies

[phone]
[phone]

[e-mail]

R&S FSH Manuals

Contents of Manual for Spectrum Analyzer R&S FSH

Service Manual - Instrument

The Service Manual - Instrument describes how to check c ompliance with rated specific ations, as well
as instrument func tion, repair, troubleshooting and fault elimination. It c ontains all information required
when repairing the R&S FSH by replacing modules.

This Service Manual consists of f our chapter s and an annex (chapter 5) that describes how to ship the instru­ment and to order spare parts.

Chapter 1 provides all the information nec essary to check for complianc e with rated specifica-

tions. The required test equipment is also specified.

Chapter 2 describes the m anual adjustm ent of the calibration source and of the frequency ac-

curacy as well as the automatic adjustm ent of individual m odule data following m od­ule replacement.

Chapter 3 describes the design as well as simple measur es for repair and fault diagnosis, in-

cluding in particular the replacement of modules.

Chapter 4 contains information about extensions and modifications by installing instrument

software and retrofitting options.

Chapter 5 describes how to ship the instrument and order spare parts, and contains spare

parts lists.

Operating Manual

The Operating Manual provides infor mation about the technic al specif ications, the contr ols and connec­tors on the fr ont and rear panel, requir ed steps f or plac ing the instrum ent into operation, the bas ic oper­ating concept, as well as manual and remote control.

Typical measurem ent tas ks are explained in detail using the func tions of the user interface and program
examples.

The Operating Manual also provides usef ul information on preventive m aintenance and fault diagnosis
by means of warnings and error messages output by the unit.

Quick Start Manual

The Quick Start Manual provides information about typical measurement tasks, the basic operation
concept, as well as manual and remote control. Each of these items is explained in detail using the func­tions of the user interface and program examples.

1145.5973.82 0.1 E-4

Manuals R&S FSH

Service and Repair

If your equipment requires service or repair or if you want to order spare parts and modules, please
contact your Rohde & Schwarz support center or our spare parts express service.

Rohde & Schwarz representatives and the address of our spare parts express service are listed in the
front section of this service manual.

You will need to provide the f ollowing infor m ation in order f or us to respond to your inquiries quick ly and
accurately and to determine whether the warranty for your instrument is still valid:

• Instrument model

• Serial number

• Firmware version

• Detailed error description in case of repair

• Contact partner for checkbacks

Rohde & Schwarz offers the following calibrations:

• Calibration on R&S-type test systems. The calibration docum entation meets the r equirements of the
quality management system ISO 9000.

• Calibration at an R&S calibration center approved by the German Calibration Service (DKD). T he
calibration documentation consists of the DKD calibration certificate.

Refer to Chapter 5 for a detailed description of how to ship the instrument and to order spare parts.

1145.5973.82 0.2 E-4

R&S FSH Test Instructions

1 Performance Test

Test Instructions

• The rated specifications of the analyzer are tested after a warm-up tim e of at least 15 minutes. Only
by adhering to this requirement can compliance with the guaranteed data be ensured.

• Values specified in the following sections are not guaranteed. Only the technical specifications
provided on the data sheet are binding.

• The values specified in the data sheet are the guaranteed limits.

• Inputs for settings during measurements are shown as following:

[<KEY>] Press a key on the front panel, eg [SPAN]
[<SOFTKEY>] Press a softkey, e.g. [MARKER -> PEAK].
[<nn unit>] Enter a value and terminate by entering the unit, e.g. [12 kHz].
Successive entries are separated by [:], e.g. [ BW : MANUAL RES BW : 3 kHz ].

Measuring Equipment and Accessories

Item Type of

equipment

1 Signal generator Frequency:

2 6-dB divider

(power splitter)

3 Power meter R&S NRVD 0857.8008.02 Frequency response

4 Power sensor 1 MHz to 6 GHz

5 N cable Attenuation < 1 dB to 6 GHz Tracking generator output

Specifications recommended Equipment

R&S°FSH3 10 MHz to 3 GHz
R&S°FSH6 10 MHz to 6 GHz

Uncertainty of frequency: 0.1 ppm

Phase noise at 500 MHz:
< -100 dBc (1Hz) @ 10 kHz
< -110 dBc (1Hz) @ 100 kHz
< -130 dBc (1Hz) @ 1 MHz

Weinschel

RSS ≤ 0.8%
Meter noise ≤ 20 pW

recommended

R&S SML03
R&S SMT06

1506A

R&S NRV-Z4 0828.3618.02 Frequency response

R&S order
no.

1090.3000.13

1039.2000.06

Frequency response

Use

Frequency response
Frequency accuracy of
reference oscillator

level

6

50-Ω
termination

1 MHz to 6 GHz

Return loss ≤ -10 dB

Noise display

1145.5973.82 1.1 E-5

Performance Test R&S FSH

Performance Test

Checking the frequency accuracy

Test equipment: Signal generator (refer to section "Measurement Equipment and

Accessories", item 1)
Test setup: ¾ Connect the signal generator to the RF input of the R&S FSH.
Signal generator settings: - Frequency 1 GHz

- Level -30 dBm

R&S FSH settings:

Measurement: ¾ Read out the frequency value (Count:) of the marker.

Note:

- [ PRESET ]

- [ FREQ : 1 GHz ]

- [ SPAN : 100 kHz ]

- [ BW : MANUAL RES BW : 10 kHz ]

- [ MARKER : MARKER MODE : FREQ COUNT ]

Nominal frequency:............................................................1.0 GHz ± 1 kHz

The frequency of the reference oscillator can be adjusted by means of a

service function (refer to Chapter 2 "Adjustment").

1145.5973.82 1.2 E-5

R&S FSH Performance Test

Checking the level accuracy and the frequency response

Test equipment: - Signal generator (refer to section "Measurement Equipment and

Accessories", item 1)

- Power meter (refer to section "Measurement Equipment and
Accessories", item 3)

- Power sensor (refer to s ection "Measurement Equipment and
Accessories", item 4)

- 6-dB p ower splitter (refer to section "Measurement Equipment and
Accessories", item 2)

Determining the level accuracy at 100 MHz

Test setup: ¾ Connect the power sensor (item 4) to the power meter and execute

function ´ZERO´ when there is no signal applied to the power sensor.

¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the R&S FSH.

Signal generator settings: - Frequency 100 MHz

- Level 6 dBm

¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter
shows
0 dBm.

R&S FSH settings:

- [ PRESET ]

- [ FREQ : 100 MHz ]

- [ AMPT: 0 dBm ]

- [ SPAN : 100 kHz ]

- [ BW : MANUAL RES BW : 10 kHz ]

- [ TRACE : DETECTOR : RMS ]

¾ Set the marker to the peak of the signal.

- [ MARKER: SET MARKER: PEAK ]

Evaluation: The difference between the signal levels measured with the power meter

and the level reading of the marker reflects the absolute level error of the
R&S FSH. It can be calculated as:

= L

Level error

100 MHz

- L

powermeter

1145.5973.82 1.3 E-5

Performance Test R&S FSH

Checking the frequency response

For the measurement of the frequency response, the value at 100 MHz for each reference level setting is

used as the reference. The reference level influences the RF attenuation (RF attenuation = +10 dBm +
reference level).

Test setup: ¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the SA..

Signal generator settings: - Frequency {f

} *

in

- Level -4 dBm

Determine the output power of the signal generator with the power meter.

Adjust the output power of the generator until the power meter shows

-10 dBm.

R&S FSH settings:

- [ PRESET ]

- [ AMPT : Ref_Lev*) ]

- [ SPAN : 100 kHz ]

- [ BW : MANUAL RES BW : 10 kHz ]

- [ TRACE : DETECTOR : RMS ]

- [ FREQ : CENTER : {f

- [ SETUP : Hardware Setup: Low Noise]

in

} * ]

*) Refer to table under “Performance Test Report” for values of Ref_Lev

and f

.

in

If the a RF preamplifier is installed, its frequency response has to be
checked also. To switch it on please enter:

Reference measurement:

- [ SETUP : Hardware Setup: Preamp: ON ]

¾ Determine signal level L

powermeter

.

¾ Set the marker to the peak of the signal.

- [ MARKER: SET MARKER: PEAK ]

The signal level L
Ref

100MHz

is displayed by the level reading of the marker.

= L

- L

powermeter

Measurement

Signal generator settings:
Power meter settings:

- Frequency {fin}

Refer to table under “Performance Test Report” for values of {f
Determine the signal level L

powermeter

. To achieve higher accuracy,

}.

in

compensating the frequency response of the power sensor is

R&S FSH settings:

recommended.

- [ FREQ : {f

Refer to table under “Performance Test Report” for values of {f

} ]

in

}.

in

¾ Set the marker to the peak of the signal.

- [ MARKER: SET MARKER: PEAK ]

The signal level L

is displayed by the level reading of the marker.

Evaluation: The frequency response can be calculated as:

Frequency response = L

- L

powermeter

- Ref

100 MHz

1145.5973.82 1.4 E-5

R&S FSH Performance Test

Checking the accuracy of the RF attenuator

Test principle:

The RF attenuator of the R&S FSH can be switched from 0 to 30 dB in
10-dB increments by changing the reference level (RF attenuation = +10
dBm + reference level).

Test equipment: - Signal generator (refer to section "Measurement Equipment and

Accessories", item 3)
Frequency 100 MHz
Maximum level ≥ 6 dBm

Test setup: ¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the R&S FSH.

Signal generator settings: - Frequency 100 MHz

- Level -14 dBm

¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the signal generator until the power
meter shows -20 dBm ± 0.2 dB.

R&S FSH settings:

- [ PRESET ]

- [ FREQ : 100 MHz ]

- [ SPAN : 10 kHz ]

- [ BW : MANUAL RES BW : 1 kHz ]

- [ BW : MANUAL VIDEO BW : 100 Hz ]

- [ TRACE : DETECTOR : RMS ]

- [ AMPT: 0 dBm ]

- [ SETUP : Hardware Setup: Low Noise ]

Reference measurement: ¾ Set the marker to the peak of the signal.

[ MARKER: SET MARKER: PEAK ]
The signal level L
Ref

0dBm

is displayed by the level reading of the marker.

= L

- L

powermeter

Measurement

Signal generator settings: - Frequency 100 MHz

- Level Ref_Lev *) – 14 dB

*) Refer to table under “Performance Test Report” for values of {Ref_Lev}.

¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter

shows the value Ref_Lev – 10 dB.

R&S FSH settings:

- [ AMPT : {Ref_Lev} ]

- [ MARKER: SET MARKER: PEAK ]

Evaluation: The signal level L

The difference between the level inaccuracy of the R&S FSH and Ref

is displayed by the level reading of the marker.

0dBm

(at 10 dB RF-Att) is the uncertainty of the RF attenuation:

IF-Gain

accuracy

= (L - L

powermeter

) – Ref

0dBm

1145.5973.82 1.5 E-5

Performance Test R&S FSH

Checking the accuracy of the IF gain setting

Test principle: The IF gain of the R&S FSH can be switched from 0 to 15 dB by changing

the reference level.

Test equipment: - Signal generator (refer to section "Measurement Equipment and

Accessories", item 3)
Frequency 100 MHz

Maximum level ≥ -10 dBm

Test setup: ¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the SA.

Signal generator settings: - Frequency 100 MHz

- Level -4 dBm

R&S FSH settings:

Reference measurement:

¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter

shows -10 dBm ± 0.2 dB.

- [ PRESET ]

- [ FREQ: 100 MHz ]

- [ SPAN : 10 kHz ]

- [ BW : MANUAL RES BW: 1 kHz ]

- [ BW : MANUAL VIDEO BW : 100 Hz ]

- [ TRACE : DETECTOR : RMS ]

- [ AMPT : Ref_Lev *)]
*) Refer to table under “Performance Test Report” for values of {Ref_Lev}.

¾ Set the marker to the peak of the signal.

- [ MARKER: SET MARKER: PEAK ]

The signal level L is displayed by the level reading of the marker.
Ref

-10dBm

= L - L

powermeter

Measurement

Signal generator settings: - Frequency 100 MHz

- Level Ref_Lev + 6 dB
¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter

shows the value Ref_Lev ± 0.2 dB.

R&S FSH settings:

- [ AMPT : {Ref_Lev} ]
*) Refer to table under “Performance Test Report” for values of Ref_Lev.

- [MARKER: SET MARKER: PEAK ]

Evaluation: The signal level L

The difference between the level inaccuracy of the R&S FSH and Ref

(at 0 dB IF gain) is the uncertainty of the IF gain:

10dBm

IF-Gain

accuracy

is displayed by the level reading of the marker.

= (L

- L

powermeter

) - Ref

-10dBm

-

1145.5973.82 1.6 E-5

R&S FSH Performance Test

Checking the displayed average noise floor

Test equipment:

Test setup:
R&S FSH settings:

50-Ω termination (refer to section "Measurement Equipment and

Accessories", item 6)

¾ Terminate the RF input of the R&S FSH with 50 Ω.

- [ PRESET ]

- [ SPAN : ZERO SPAN ]

- [ Manual Res BW : 1 kHz ]

- [ Manual Video BW : 10 Hz ]

- [ TRACE : TRACE MODE: AVERAGE ]

- [ AMPT : -30 dBm ]

- [ FREQ : {f
Refer to table under “Performance Test Report” for values of f

Measurement: ¾ Read out the marker level.

Evaluation: The displayed average noise floor is displayed by the level reading of the

marker.

} ]

n

.

n

1145.5973.82 1.7 E-5

Performance Test R&S FSH

Checking the phase noise

Test equipment: Signal generator (refer to section "Measurement Equipment and

Accessories", item 3)
Frequency 500 MHz
Level ≥ 0 dBm
Phase noise at 500 MHz: < -100 dBc (1Hz) @ 10 kHz

< -110 dBc (1Hz) @ 100 kHz

< -120 dBc (1Hz) @ 1 MHz

Test setup: ¾ Connect the RF output of the signal generator to the RF input of the

R&S FSH.

Signal generator settings: - Frequency 500 MHz

- Level 8 dBm *)

*) The overrange of the AD converter is used for higher dynamic range.

R&S FSH settings:

- [ PRESET ]

- [ FREQ : 500 MHz ]

- [ AMPT : 0 dBm ]

- [ SPAN : {span} ]

- [ BW : RBW MANUAL : {RBW} ]
Depending on the offset, refer to the table below for values of RBW and

span.

- [ TRACE : TRACE MODE: AVERAGE ]

- Marker to peak
[MARKER: SET MARKER: PEAK ]

- Delta marker to {offset}
[MARKER: DELTA: {offset}: kHz ]

- Set marker mode to noise measurement
[MARKER: MARKER MODE: NOISE ]

Evaluation: The phase noise is displayed in the marker field by the reading

Delta [dBc/Hz]´.

Phase noise measurement settings

Offset Span RBW

30 kHz 100 kHz 1 kHz

100 kHz 220 kHz 10 kHz

1 MHz 2.2 MHz 100 kHz

1145.5973.82 1.8 E-5

R&S FSH Performance Test

Checking the display linearity

Test equipment: - Signal generator (refer to section "Measurement Equipment and

Accessories", item 1)

- Power meter (refer to section "Measurement Equipment and

Accessories", item 3)

- Power sensor (refer to section "Measurement Equipment and

Accessories", item 4)

- 6-dB power splitter (refer to section "Measurement Equipment and

Accessories", item 2)

Test setup: ¾ Connect the power sensor (item 4) to the power meter and execute

function ´ZERO´ when there is no signal applied to the power sensor.

¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the R&S FSH.

st

1

Measurement

0 to 30 dB below reference level
Signal generator settings: - Frequency 100 MHz

¾ Determine the output power of the signal generator with the power

R&S FSH settings:

Reference measurement: ¾ Set the marker to the peak of the signal.

- Level + 6 dBm

meter. Adjust the output power of the generator until the power meter
shows
0 dBm.

- [ PRESET ]

- [ AMP T: 0 dBm ]

- [ FREQ: 100 MHz ]

- [ SPAN : 10 kHz ]

- [ Manual Res BW : 1 kHz ]

- [ Manual SWPTime : 1 s ]

- [ TRACE : DETECTOR : RMS ]

- [MARKER: SET MARKER: PEAK ]
The signal level L
Ref

0dBm

is displayed by the level reading of the marker.

= L

- L

powermeter

Signal generator settings: - Frequency 100 MHz

- Level Sig_Lev + 6 dB

Refer to table under “Performance Test Report” for values of {Sig_Lev}.
¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter
shows the value of {Sig_Lev}.

1145.5973.82 1.9 E-5

Performance Test R&S FSH

Evaluation: The signal level L is displayed by the level reading of the marker.

The difference between the level inaccuracy of the R&S FSH and Ref

is the uncertainty of the display linearity:

nd

Measurement

2

30 to 50 dB below reference
level

Linearity

uncertainty

Because the sensitivity of the power meter is limited, the internal RF
attenuator of the Galaxy is used to increase the dynamic range of the
input signal.

= (L

- L

powermeter

) – Ref

R&S FSH settings:

- [ AMPT: 20 dBm ]

Signal generator settings: - Frequency 100 MHz

- Level - 4 dBm

¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter
shows

-10 dBm.

Reference measurement: ¾ Set the marker to the peak of the signal.

- [MARKER: SET MARKER: PEAK ]
The signal level L
With the result of the 1

to be calculated. “Linearity

is displayed by the level reading of the marker.

st

linearity measurement, a new correction factor is

uncertainty

(-30dB)” is the measured uncertainty of

the R&S FSH linearity at 30 dB below reference level.

0dBm

0dBm

Ref

20dBm

= (L

- L

powermeter

Signal generator settings: - Frequency 100 MHz

- Level Sig_Lev + 6 dB

Refer to table under “Performance Test Report” for values of {Sig_Lev}.
¾ Determine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power meter
shows the value Sig_Lev ± 0.2 dB.

Evaluation: The signal level L

is displayed by the level reading of the marker.

The difference between the level inaccuracy of the R&S FSH and

Ref

is the uncertainty of the display linearity:

20dBm

Linearity

uncertainty

= (L

- L

) – Linearity

powermeter

) – Ref

uncertainty

20dBm

(-30dB)

1145.5973.82 1.10 E-5

R&S FSH Performance Test Tracking Generator

Performance Test Tracking Generator

(Model 1145.5973.13, 1145.5973.23 or 1145.5973.26 only)

Checking output level / frequency response

Test equipment: - N cable (refer to section "Measurement Equipment and Accessories“,

item 5)
Frequency up to 3 GHz
Maximum attenuation < 0.2 dB

Test setup: ¾ Connect the tracking generator output to the RF input of the R&S FSH.

R&S FSH settings:

Measurement: Tune the marker to the maximum level of the trace.

- [ PRESET ]

- [ MEAS: TRACKING GENERATOR ]

- [ AMPT : REF: 10 dB ]

- [ FREQ : START FREQ 10 MHz ]

In the model 1145.5973.23 the output level of the tracking generator can

be set to 0 dBm. Check the output level also with this setting:

- [ PRESET ]

- [ MEAS: TRACKING GENERATOR ]

- [ Output Level : 0 dBm ]

- [ AMPT : REF: 10 dB ]

In the FSH6 the output level of the tracking generator is measured with

two different frequency settings :

1)

- [ FREQ : START FREQ 10 MHz ]

- [ FREQ : STOP FREQ 3 GHz ]

2)

- [ FREQ : START FREQ 3 GHz ]

- [ FREQ : STOP FREQ 6 GHz ]

- [MARKER: <tune the marker> ]
Read out the marker level.
Tune the marker to the minimum value of the trace.
Read out the marker level.

1145.5973.82 1.11 E-5

Performance Test Report R&S FSH

Performance Test Report

Table 1-1 Performance Test Report

ROHDE & SCHWARZ Performance Test Report Spectrum Analyzer Version 2 April 2004

Model ( ):
Order number:
Serial number:
Test person:
Date:
Sign:

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Frequency accuracy
Reference oscillator

Level accuracy
at 100 MHz with
Ref_Lev = 0 dBm

Page 1.2

0.999999

Page 1.3

-0.5

________

________

1.000001

+0.5

GHz

dB

uncertainty

1145.5973.82 1.12 E-5

R&S FSH Performance Test Report

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Frequency response
with
Ref_Lev = 20 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

uncertainty

Frequency response
with
Ref_Lev = 10 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

1145.5973.82 1.13 E-5

Performance Test Report R&S FSH

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Frequency response
with
Ref_Lev = 0 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

uncertainty

Frequency response
with
Ref_Lev = -10 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

1145.5973.82 1.14 E-5

R&S FSH Performance Test Report

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Frequency response
with PreAmp = ON
(only if PreAmp is
implemented)
Ref_Lev = -15 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

uncertainty

Frequency response
with PreAmp = ON
(only if PreAmp is
implemented)
Ref_Lev = -25 dBm

f

fresp

10 MHz
100 MHz
500 MHz
1000 MHz
1500 MHz
2000 MHz
2500 MHz
2990 MHz
R&S°FSH6 only :
3500 MHz
4000 MHz
4500 MHz
5000 MHz
5500 MHz
5990 MHz

Page 1.3

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

-1

________
Reference
________
________
________
________
________
________

________
________
________
________
________
________

+1

+1
+1
+1
+1
+1
+1

+1
+1
+1
+1
+1
+1

dB
dB
dB
dB
dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

1145.5973.82 1.15 E-5

Performance Test Report R&S FSH

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Attenuator accuracy

RF_Att / Ref_Lev :
0 dB / -10 dBm
10 dB / 0 dBm
20 dB / 10 dBm
30 dB / 20 dBm
PreAmp = ON
(only if PreAmp is
implemented)
0 dB / -15 dBm

IF gain
Switching accuracy

Reference level

-10 dBm

-15 dBm

-20 dBm

-25 dBm

Page 1.5

Page 1.5

-0.5

-

-0.5

-0.5

-0.5

-

-0.5

-0.5

-0.5

________
Reference
________
________

________

Reference
________
________
________

+0.5

­+0.5
+0.5

+0.5

­+0.5
+0.5
+0.5

dB

­dB
dB

dB

­dB
dB
dB

uncertainty

Displayed average
Noise floor

f

:

noise

9.9 MHz
101 MHz
501 MHz
1001 MHz
1501 MHz
2001 MHz
2501 MHz
2999 MHz
R&S°FSH6 only :
3501 MHz
4001 MHz
4501 MHz
4999 MHz
5501 MHz
5999 MHz

Page 1.7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

________
________
________
________
________
________
________
________

________
________
________
________
________
________

-105

-105

-105

-105

-105

-105

-105

-105

-103

-103

-103

-103

-96

-96

dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm

dBm
dBm
dBm
dBm
dBm
dBm

1145.5973.82 1.16 E-5

R&S FSH Performance Test Report

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Displayed average
Noise floor with
PreAmp = ON
(only if PreAmp is
implemented)

f

:

noise

9.9 MHz
101 MHz
501 MHz
1001 MHz
1501 MHz
2001 MHz
2499 MHz
2999 MHz
R&S°FSH6 only :
3501 MHz
4001 MHz
4501 MHz
4999 MHz
5501 MHz
5999 MHz

Page 1.7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

________
________
________
________
________
________
________
________

________
________
________
________
________
________

-120

-120

-120

-120

-120

-120

-120

-115

-115

-115

-115

-115

-105

-105

dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm

dBm
dBm
dBm
dBm
dBm
dBm

uncertainty

Phase noise
at 500 MHz

Offset frequency:
30 kHz
100 kHz
1 MHz

Page 1.8

-

-

-

________
________
________

-85

-100

-120

dBc (1Hz)
dBc (1Hz)
dBc (1Hz)

1145.5973.82 1.17 E-5

Performance Test Report R&S FSH

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

Display linearity
0 to -30 dB
Reference level:
0 dBm

Sig_Lev
0 dBm

-5 dBm

-10 dBm

-15 dBm

-20 dBm

- 25 dBm

- 30 dBm

Display linearity

-30 to -50 dB
Reference level:
20 dBm

Sig_Lev

-10 dBm

-15 dBm

-20 dBm

- 25 dBm

- 30 dBm

:

:

Page 1.9

Page 1.9

-

-0.2

-0.2

-0.2

-0.2

-0.2

-0.2

-

-0.3

-0.3

-0.3

-0.3

Reference
________
________
________
________
________
________

Reference
________
________
________
________

­+0.2
+0.2
+0.2
+0.2
+0.2
+0.2

­+0.3
+0.3
+0.3
+0.3

­dB
dB
dB
dB
dB
dB

­dB
dB
dB
dB

uncertainty

1145.5973.82 1.18 E-5

R&S FSH Performance Test Report Tracking Generator

Performance Test Report Tracking Generator

(model 1145.5850.13, 1145.5850.23 or 1145.5850.26 only)

Table 1-2 Performance Test Report

ROHDE & SCHWARZ Performance Test Report Option -B 9 Version 2 April 2004

Serial number:
Test person:
Date:
Sign:

Characteristic Included in Min. value Actual value Max. val ue Unit Measurement

R&S°FSH3:
Level accuracy
output level: -20 dBm

Maximum value
Minimum value

R&S°FSH3:
Level accuracy
output level: 0 dBm
(model 1145.5850.23
only)

Maximum value
Minimum value

R&S°FSH6:
Level accuracy

10 MHz to: 3 GHz
Maximum value
Minimum value

Page 1.11

Page 1.11

Page 1.11

-3

-7

-3

-7

-2

-5

________
________

________
________

________
________

+5

-1

+5

-1

+6
+4

dB
dB

dB
dB

dB
dB

uncertainty

3 GHz to 6 GHz
Maximum value
Minimum value

2

-11

________
________

11
6

dB
dB

1145.5973.82 1.19 E-5

R&S FSH Quick Verification

2 Adjustment

This chapter describes the adjustment of the software-contr olled m odule data following the replacem ent
of modules.

Adjustments can be perf ormed only by using the adjustment program that is available from the R&S
Service Board on the R&S Internet site. Using this program prevents mistakes in the calibration data.

The R&S FSH permits the following manual adjustments:

• Adjustment of the 10-MHz reference oscillator that determines the frequency accuracy of the
R&S FSH.

• Adjustment of the level accuracy of the R&S FSH for different attenuator settings.

Adjustment enables you to maintain and restore the data integrity of the instrument.
Manual adjustments m ust be perf orm ed at an am bient tem per ature between +20°C and +30°C after the

instrument has warmed up.
After the adjustm ents have been perf orm ed, the R&S FSH is ready for use and off ers f ull data integrity.

This can be verified by performing the Performance Test as described in Chapter 1.
Verifying the functionality of the R&S FSH is recommended before you start perf orming adjustm ents or

the performance test. The verification procedure is described in the following section, ”Quick
Verification”.

Quick Verification

The quick verific ation procedure verifies hardware functionality before full testing can start. Te sting of
the following is recommended:

• On/off functionality

• Connections of the power adapter and the AF output

• Display

• Level and noise

1145.5973.82 2.1 E-4

Measurement Equipment and Accessories for Quick Verification R&S FSH

.

Measurement Equipment and Accessories for Quick Verification

The quick verification procedure requires a very limited amount of equipment.

Item Type of

equipment

1 Signal generator Frequency: 10 MHz to 3 GHz R&S SML Level

2 N-cable Attenuation: < 0.2 dB to 3 GHz Tracking generator output

Specifications recommended Equipment

recommended

R&S order
no.

Use

level

Verifying on/off functionality

Test equipment None
R&S FSH settings Switch instrument ON.
Measurement ¾ Verify that the instrument switches ON.

Verifying power and AF connections

Test equipment None
Accessories AC power adapter

Headphone

R&S FSH settings Switch instrument ON.

Connect the AC power supply.
Reference measurement ¾ Verify in the display that the battery symbol changes to a power plug
R&S FSH settings Connect the headphone.

- [ Marker : MARKER DEMOD : AM ]

Reference measurement ¾ Verify that a noise signal is heard on the headphone.

1145.5973.82 2.2 E-4

R&S FSH Measurement Equipment and Accessories for Quick Verification

Verifying the display

Test equipment None
R&S FSH settings Switch instrument ON.
Reference measurement ¾ Check the display for disturbance.

Verifying the level and noise

Test princ iple The RF attenuator of the R&S FSH can be switched from 0 to 30 dB by

changing the reference level in the instrument.

Test equipment - Signal generator (refer to section "Measurement Equipment and

Accessories for Quick Verification", item 1).
Frequency 100 MHz
Maximum level ≥ 6 dBm

Test setup ¾ Connec t the RF output of the signal generator to the input of the

R&S FSH.

Signal generator settings - Frequency 100 MHz

R&S FSH settings

Verification

- Level

- [ PRESET ]

- [ FREQ : 100 MHz ]

- [ SPAN : 10 kHz ]

- [ BW : RES BW MANUAL : 1 kHz ]

- [ BW : VIDEO BW MANUAL : 100 Hz ]

- [ TRACE : DETECTOR : RMS ]

- [ AMPT: 0 dBm ]

¾ Read the level and verify that it shows -20 dBm +/- 2 dB.

- 20 dBm

¾ Verify that the noise level in the display is < - 60 dBm.

Check 30 dB attenuation
Change signal generator setting
Change R&S FSH setting
Verification

- Level

- [ AMPT : -10 dBm]

-30 dBm

¾ Read the level and verify that it shows -30 dBm +/- 2 dB.

Check 10 dB attenuation
Change signal generator setting
Change R&S FSH setting
Verification

- Level

- [ AMPT : 10 dBm ]

-10 dBm

¾ Read the level and verify that it shows -10 dBm +/- 2 dB.

Check 0 dB attenuation
Change signal generator setting
Change R&S FSH setting
Verification

- Level

- [ AMPT : 20 dBm ]

0 dBm

¾ Read the level and verify that it shows 0 dBm +/- 2 dB.

1145.5973.82 2.3 E-4

Measurement Equipment and Accessories for Quick Verification R&S FSH

Verify the tracking generator output level

Test principle The generator output must be connected to the RF input and verified.
Test equipment None

Test setup ¾ Connect the generator output of the R&S FSH to the RF input.

R&S FSH settings

Verification

Adjustment functions

Caution:

Only qualified personnel should carry out the re-alignment since any change
substantially influences the measurement accuracy of the instrument. For this
reason, the calibration program is available only on the R&S Service Board.

- [ PRESET ]

- [ MEAS : TRACKING GEN :]

¾ Verify that the level of the sweep shows 0 dB +5 /-7 dB.
¾ Following internal calibration, verify that the level shows 0 +/-1 dB.

1145.5973.82 2.4 E-4

R&S FSH Adjustment

Adjustment

This section describes the measurement equipment and accessories required for the manual
adjustment of the R&S FSH, the appropriate preparations of the equipment, and the individual
adjustments.

An adjustment program provides the instructions for the input settings.

Adjustment Instructions

• The adjustment of the analyzer must be perfor m ed after a warm - up tim e of at leas t 30 m inutes. Only
by adhering to this requirement can compliance with the guaranteed data be ensured.

• Inputs for setting the R&S FSH during adjustment will be programmed automatically.

1145.5973.82 2.5 E-4

Measurement Equipment and Accessories R&S FSH

Measurement Equipment and Accessories

Item Type of

equipment

1 Signal generator Frequency: 10 MHz to 3 GHz

2 6-dB divider

(power splitter)

3 Power meter R&S NRVD 0857.8008.02 Frequency response

4 Power sensor 1 MHz to 3 GHz

Specifications recommended Equipment

recommended

R&S SML Frequency accuracy of

Uncertainty of frequency: 0.1 ppm

Phase noise at 500 MHz:

< -100 dBc (1Hz) @ 10 kHz

< -110 dBc (1Hz) @ 100 kHz

< -130 dBc (1Hz) @ 1 MHz

Frequency response

R&S NRV-Z4 0828.3618.02 Frequency response
RSS ≤ 0.8%
Meter noise ≤ 20 pW

R&S order
no.

Use

reference oscillator

Adjusting the reference frequency accuracy

Test equipment Signal generator (refer to section "Measurement Equipment and

Accessories", item 2)
Test setup ¾ Connect the generator to the RF input.
Generator settings

R&S FSH settings - [ PRESET ]

Adjustment The program will adjust the reference oscillator to 10 MHz ± 1 ppm.

- Frequency 1 GHz

- Level -30 dBm

- [ FREQ : 1 GHz ]

- [ SPAN : 100 kHz ]

- [ BW : MANUAL RES BW : 10 kHz ]

- [ MARKER : MARKER MODE : FREQ COUNT ]

1145.5973.82 2.6 E-4

R&S FSH Measurement Equipment and Accessories

Adjusting the level accuracy

Test equipment - Signal generator (refer to section "Measurement Equipment and

Accessories ", item 1)

- Power meter (refer to section "Measurement Equipment and
Accessories ", item 3)

- Power sensor (refer to section "Measurement Equipment and
Accessories ", item 4)

- 6-dB power splitter (refer to section "Measurement Equipment and
Accessories ", item 2)

Determining the level accuracy at 100 MHz

Test setup ¾ Connect the power sens or ( item 4) to the power meter and execute

function ´ZERO´ when there is no signal applied to the power
sensor.

¾ Connect the RF output of the signal generator to the input of the

divider.

¾ Connect output 1 of the divider to the power sensor / power meter.
¾ Connect output 2 of the divider to the RF input of the R&S FSH.

Signal generator settings - Frequency 100 MHz

- Level 6 dBm

R&S FSH settings

Adjustment The program will guide you through the required adjustments for

Save calibration data

¾ Deter mine the output power of the signal generator with the power

meter. Adjust the output power of the generator until the power
meter shows the expected level “Am pt”. This level is displayed on
the PC display during adjustment.

- Performed automatically via the adjustment program.

different levels.

If the measured values are within the program med limits, the new

constants will be autom atically stored in the R&S FSH and will be
used for future measurements.

1145.5973.82 2.7 E-4

Frequency Response Correction R&S FSH

Frequency Response Correction

Frequency response correction is part of the RF/IF module and is delivered with the module in an
EEPROM. Any change requires the use of a special test program and test setup. If necessary, the
module must be sent to R&S Service.

1145.5973.82 2.8 E-4

R&S FSH Instrument Design and Functional Description

3 Repair

This chapter describes the design of the R&S FSH, simple measures for repair and troubleshooting,

and, in particular, the replacement of modules.

Firmware updates and the installation of the DTF option are described in Chapter 4.

Instrument Design and Functional Description

The following figure shows a block diagram of the R&S FSH.

FSH6 only

IF 1b

3 - 6

Mixer Filter

GHz

Filter

7231

MHz

x2

IF 2b

Mixer

x2

5.1 - 6.6 GHz

IN

100 kHz ..

6 GHz

Protection
Attenuator

LowPass

0 - 3
GHz

IF 1a

4031

Mixer Filter

4 - 7 GHz

Filter

MHz

Synthesizer

4 - 7
GHz

Oscillator 1

(LO 1)

Audio and TRIGGER

12

Address, DATA and Control Bus

Oscillator 2

DATA Detector

Data

Memory

Optical

Interface

Optical

Adapter

Mainboard

Program

Memory

Fig. 3-1 Block Diagram R&S FSH

3.2 GHz

IF 2a

LCD

831.25

Mixer Buffer

MHz

800 MHz

Reference

: 4

Power and

Battery

Management

Mixer Filter

3.2 GHz

3.2

GHz

(LO 2)

Risc

Controller

Key pad

Module

IF 3

MHz

TCXO

EEPROM

To

xN

N = 1 for f < 3 GHz
N = 2 for f > 3 GHz

Power

Sensor

Trigger

Mainboard

Audio

OUT

Power

Adapt er

18 V

12

TG OUT

31.25
MHz

Noise

10

REF

Inter-

connection

Board

Battery

+
Temp
Sense

ADC

Mixer

3615.6

or 4031.2

MHz

Oscillator

(TG)

12

1145.5973.82 3.1 E-5

Instrument Design and Functional Description R&S FSH

Description of the block diagram

The R&S FSH is a triple-conversion super-heterodyne receiver for the frequency range 100 kHz to
3 GHz. After signals are received, they are processed by the RF/IF board and the mainboard.

The RF/IF board contains the functions as described below.

Attenuator

The RF signal passes from the input connector RF INPUT to the programmable input attenuator, which
can be switched from 0 dB to 30 dB in increments of 10 dB. The circuitry is protected from overvoltage.

RF to IF conversion

The RF/IF board converts the received frequencies in the range 100 kHz to 3 GHz to the low 31.25 MHz
IF, which is digitized with 25 MHz before it is sent to the mainboard for digital processing. The RF/IF
board also includes the required local oscillators and associated frequency processing circuits. The unit
is housed in silver-plated aluminum packaging.

The input signal passes via the input attenuator and the lowpass filter to the first mixer. The lowpass
filter provides suppression of the image frequency (image = LO+ IF) to keep the conversion
unambiguous. In the 1st mixer the input signal is up-converted to an IF of 4031.25 MHz by means of the
first LO (4031.25 MHz to 7031.25 MHz). The mixer is followed by a low noise IF amplifier, which
compensates for the loss due to mixing. The signal then passes a filter with a 3-dB bandwidth of
approximately 400 MHz for filtering the first IF. The local oscillator frequency required for this conversion
is also generated on the board. This signal is generated by three VCOs synchronized to 100 MHz, which
in turn is synchronized to a Temperature Compensated 10-MHz Xtal Oscillator (TCXO). This TCXO is
electrically calibrated.

The signal from the 1st IF filter is converted to the 2nd IF of 831.25 MHz. The signal is routed to an

831.25 MHz filter with a 3-dB bandwidth of 20 MHz for further signal processing. The filter is followed by
the 3rd mixer, which converts to 31.25 MHz and utilizes an IF filter that has a -3-dB bandwidth of
approximately 2 MHz.
The frequency range above 3°GHz in the R&S FSH6 is converted via two additional mixers to a first IF
of 7231.25°MHz and to the same 2
signals of the FSH3 are doubled.

nd

IF as in the FSH3 of 831.25 MHz. As LO signals the oscillator

1145.5973.82 3.2 E-5

R&S FSH Instrument Design and Functional Description

RF

Input

Protect.

/ Att.

0..30dB

3 to 6 GHz

100 kHz

to 3 GHz

1st Mixer

x 2

1st Mixer

3x

VCO

:2

R&S FSH6 only

1st IF Amp

1st LO

4031.25 .. 7031.25 MHz

loopfilter

30 kHz

:1

1/32

or

1/64

Syn-

con

1st IF Filter

7231.25 MHz
B= 600 MHz

1st IF Filter

4031.25 MHz

B= 400 MHz

LO1_TG

126..188 MHz

or 94..110 MHz

6.4 GHz10.23 to 13.23 GHz

2nd Mixer1st IF Amp

x 2

2nd Mixer

VCO

:2

PDPD

:1

loopfilter

30 kHz

2nd IF Amp

2nd LO

3200 MHz

1/4

2nd IF Filter

831.25 MHz
B= 20 MHz

1/8

100 MHz20 MHz

800 MHz

3rd Mixer 3rd IF Amp

3rd LO

800 MHz

50 MHz

1/21/5

3rd IF Filter

31.25 MHz
B= 2 MHz

1/2

Disable

100kHz

noise

REF_TG

ADC

25 MHz

25 MHz

(DDC, DCON)

50 MHz
(Spider)

12

1/M

M= 2..15

100 MHz

TCXO

10 MHz

Fig. 3-2 Block Diagram: RF to IF Conversion and Synthesizer

1145.5973.82 3.3 E-5

Instrument Design and Functional Description R&S FSH

Tracking generator (Model 1145.5850.13/23/26 only)

The LO frequency of the 1st mixer is routed via isolation amplifiers to the TG mixer. The other input of
the mixer is a fixed frequency of 4031.25 MHz generated with a VCO locked to the TCXO frequency.

The resulting IF signal is routed to the generator output connector.

RF/IF control

The microcontroller available on the mainboard controls the RF/IF setting by programming registers via
an internal serial bus.

For calibration purposes the level correction values are stored in an EEPROM. This EEPROM also
contains module-specific information.

The temperature of the module is continuously measured, and the measured levels will be compensated
for drift if the temperature change is too great.

Mainboard

The mainboard is a combination of the power supply and the functions controlled by a dedicated RISC
controller (ARM 720).

Power and battery management

The ON/OFF key is de-bounced with the real-time clock in the controller. The ON/OFF function is
completely software controlled. This implies that the controller must be operational in order for the the
instrument to be switched ON. The µP-clock (50 MHz) is derived from the RF/IF board, thus requiring
that this board be present. This frequency will always be present if the power adapter is connected or
the instrument is in the ON state.

If the instrument is in the OFF state and the power supply is connected, the µP will control the charging
function of the battery depending on the battery condition. The maximum charging current is 1000 mA,
which drops to a trickle charge of about 100 mA if the battery is fully loaded. To prevent damage to the
battery, the charging stops if the battery temperature reaches ≤ 0°C or > 45°C. In the OFF state, the
charging current is approximately 90 mA.

This power supply and battery management arrangement uses a dedicated IC. The instrument can be
switched ON only if the battery is in operating condition. Thus, if the battery is completely empty, the
instrument cannot be switched ON until the charging current has re-loaded the battery, which takes
several minutes.

1145.5973.82 3.4 E-5

R&S FSH Instrument Design and Functional Description

Processing of measured data detectors

The measured data is processed in two dedicated ICs to reduce the sample rate of the input signal to a
value that can be handled by the hardware. The DDC converts the digital IF signal to I/Q base band and
filters the base band signals using low pass filters with programmable bandwidth. In addtiotion it delivers
the AM or FM demodulated audio signal. The DCON Asic detects the envelope of the filtered and
combined base band signal and calculates its logarithm. It contains also the video filter and the different
detectors. In addition it is resposible for the sweep control of the FSH.

FM

DAC

AM

DAC

Audio

Amp

AF OUT

Measurement

data

12

DDC

DCON

Detectors

Filters

Counter

Address, DATA and control bus

Control

RAM

TRIGGER

Fig. 3-3 Measured Data Processing

Resolution bandwidths (RBW)

The resolution bandwidths are implemented in the R&S FSH through digital processing in the DDC
ASIC (Digital Down Converter). The RBW can be selected from within the range 1 kHz to 1 MHz in 1-, 3-
or 10-unit increments. The DDC first mixes its input IF to the baseband using an NCO (Numeric
Controlled Oscillator) and then filters the resulting IQ signals via a combination of HDF (High Decimation
Filter) and an FIR (Finite Impulse Response) stages. At the end of the DDC processing chain, the IQ
signal is split into magnitude and phase.

For AF demodulation the amplitude information is used. In the case of FM the phase information is used
and fed to the headphone connector. In the analyzer mode the signal at the position of the marker can
be demodulated. In this case the R&S FSH stops the sweep for a selectable period of time and
demodulates the input signal. The volume can be adjusted.

For a standard log display of the analyzed spectrum, the magnitude data is converted from linear to
logarithmic in the DCON ASIC (Digital CONtroller).

Video bandwidths (VBW)

The video filters can be adjusted between 10 Hz and 3 MHz in increments of 1/3/10. They are designed
as digital lowpass filters for the video signals in the DCON ASIC. Software can couple the VBW to the
RBW, or the VBW can be set independently.

1145.5973.82 3.5 E-5

Instrument Design and Functional Description R&S FSH

Detectors

The R&S FSH uses a detector for the positive peak and the negative peak value. In the “sample” mode
the measured value is routed directly to the display. In the RMS“ mode the detector determines the rms
value of the input signal for one specific point in the display during the measured time.

Keypad control

Keypad control is a dedicated function of the controller. For the implementation of the rotary knob, an
encoder is used that is detected with a dedicated CPLD (Complex Programmable Logic Device). This
“One Time Programmable” CPLD is programmed during production.

Serial optical interface

The interface to an external PC has been implemented with optical technology to avoid electrical loops.
The protocol is RS-232-based and is implemented in the instrument by the UART of the controller. It
requires a special optical RS-232 cable for communication (R&S FSH-Z34, delivered with the
instrument). The maximum baud rate is 115200.

Power sensor

The power sensor uses the display of the R&S FSH. Communication is achieved with a separate UART
from the controller.

Color LCD module

The ¼ VGA passive matrix display is backlighted by an FCC backlight, whose light output can be
adjusted to an optimum between visibility and battery use.

1145.5973.82 3.6 E-5

R&S FSH Module Replacement

Module Replacement

This section describes the service concept and contains the spare parts list and the basic documents for
the R&S FSH instrument.

Note: The numbers indicated in brackets refer to items in the mechanical exploded drawings.

Note: The words “left” and “right” in the manual always refer to the front view of the instrument.

• Please pay close attention to the safety instruc tions in

Caution!

the front section of this manual.

• Disconnect the power connector from the instrument
before opening the case.

• Safeguard the replacement site against electrostatic
discharge to prevent damage to electronic components

Wrist strap with cord

Building ground

of the modules.

• The following two methods of ESD protection can be

used together or separately:

- Wrist strap with cord to ground connection

- Conductive floor mat and heel strap combination

Ground connection
of operational site

Heel strap
Floor mat

1145.5973.82 3.7 E-5

Module Replacement R&S FSH

2.2

S1

X2

9

S1

S1

8

10.2

5

10.1

S4

S4

S2

W1

S2

X2

S2

S4

S1

2.4

2.3

7

4

10.3

S3

S3

Fig. 3-4 Exploded View

S4

S4

S4

S4

S4

1

S1

S1

S4

3

6

2.1

1145.5973.82 3.8 E-5

R&S FSH Module Replacement

Overview of the modules

Table 3-1 List of spare parts and order numbers

Reference Part R&S Order Number

1 Battery Pack for R&S FSH

(R&S FSH-Z32)

2 Housing R&S FSH without top holster 1157.3258.00

Top holster for FSH without tracking

4

5

6 Mainboard for R&S FSH 1157.3570.00

7 N connector 1157.3235.00

8 Interconnection board 1157.3587.00

9 Input unit (power and audio connectors,

10 Set of cables for R&S FSH 1157.3329.00

21 AC mains adapter for R&S FSH

22 AC mains adapter for R&S FSH

23 AC mains adapter for R&S FSH

AC mains adapter for R&S FSH

See exploded drawing on the previous page.

generator

Top holster for FSH with tracking generator 1157.3493.00

Front unit for R&S FSH3 1157.3241.00 3

Front unit for R&S FSH6 1300.7591.00

LCD module 1157.3229.00

LCD plane for FSH3 1300.7704.00

LCD plane for FSH6 1300.7710.00

RF/IF module for R&S FSH3 without tracking
generator

RF/IF Module for R&S FSH3 with tracking
generator

RF/IF Module for R&S FSH6 without tracking
generator

RF/IF Module for R&S FSH6 with tracking
generator

including wire tree)

(EU Version)

(UK Version)

(US Version)

(AUS Version)

1145.5796.02

1157.3487.00 2.4

1157.3606.00

1157.3612.00

1300.7604.00

1300.7610.00

1157.3270.00

1157.3293.00

1157.3306.00

1157.3312.00

1157.3370.00

1145.5973.82 3.9 E-5

Module Replacement R&S FSH

Opening the instrument

(See exploded drawing for related numbers.)

¾ Disconnect the power plug.

¾ Switch the instrument to OFF.

¾ Loosen the six (S1) screws and remove the top cover (2.4) and bottom cover (2.1).

¾ Disconnect the connector (X2).

¾ Loosen the three (S2) screws and remove the grip cover (2.3).

¾ Loosen the two (S3) screws and remove the rear case (2.2).

¾ Loosen the nine (S4) screws and remove the mainboard shielding.

Closing the instrument

¾ Mount the mainboard shielding and fasten the nine (S4) screws.

Note that the shielding of wire-tree (W1) is reconnected again.

¾ Mount the rear case (2.2) and fasten the two (S3) screws.

¾ Mount the grip cover and fasten the three (S2) screws.

¾ Connect the connector (X2).

¾ Mount the top cover (2.4) and bottom cover (2.1).

¾ Fasten the six (S1) screws .

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

¾ Note: When detaching the connectors, proceed with caution.

Caution! Note that the connecting cables are still connected.

Fig. 3-5 Opening the instrument

1145.5973.82 3.10 E-5

R&S FSH Module Replacement

Replacing the battery

¾ Open the instrument.

¾ Disconnect connector (X1).

¾ Replace the battery.

¾ Connect (X1).

¾ Close the instrument.

¾ Charge the battery.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

¾ Note: It is recommended that battery charging be performed with the ins trument switched OFF and

the AC power connected to the mains. The charging time for a full battery is about 4 hours.

X1

Fig. 3-6 Replacing the battery

1145.5973.82 3.11 E-5

Module Replacement R&S FSH

Replacing the housing

Housing parts:

2.1: Bottom cover

2.2: Rear case

2.3: Grip cover

2.4: Top cover

Notes: When replacing the rear case, the existing type plate must be placed on the new rear

case, or the old series number must be written on the new type plate.

When the grip cover is replaced, the “input unit power/audio connections” have to be

placed in the new grip cover. See also Replacing the power/audio connections.

¾ Open the instrument.

¾ Replace the specific housing part.

¾ Close the instrument.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

2.1

2.2
Type Plate

Fig. 3-7 Replacing the housing

2.3

2.4

1145.5973.82 3.12 E-5

R&S FSH Module Replacement

Replacing the front unit for R&S FSH

¾ Open the instrument.

¾ Remove the battery .

¾ Remove the Main Unit:

¾ Disconnect the connectors (X3), (X4), and (X5).
¾ Remove the main unit by unscrewing the two (S5) screws.

¾ Remove the LCD colour module:

¾ Losen the four (S6) screws.
¾ Remove the LCD colour module.

¾ Use the new front unit to assemble the instrument again.

Before mounting the unit, make sure that no dust is present between the front unit and
the LCD colour module.

¾ Mount the LCD colour module with the four (S6) screws.

¾ Mount the Main Unit with the two (S5) screws.

¾ Connect the connectors (X3), (X4), and (X5).

¾ Mount the battery.

¾ Close the instrument.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

S5

S5

S6

X4

X5

X3

X4

X5

S6

Main Unit

S6

Color LCD
Module

S6

X3

X6

Fig. 3-8 Replace Front Unit

1145.5973.82 3.13 E-5

Module Replacement R&S FSH

Replacing the Color LCD Modul e

¾ Open the instrument.

¾ Remove the battery

¾ Remove the Main Unit:

¾ Disconnect the connectors (X3), (X4), and (X5).
¾ Remove the main unit by unscrewing the two (S5) screws.

¾ Remove the LCD colour module:

¾ Disconnect the connector (X6).
¾ Losen the four (S6) screws.
¾ Remove the LCD colour module.

¾ Use the new module to assemble the instrument again.

Before mounting the unit, make sure that no dust is present between the front unit and
the colour module.

¾ Mount the LCD colour module with the four (S6) screws.

¾ Mount the Main Unit with the two (S5) screws.

¾ Connect the connectors (X3), (X4), and (X5).

¾ Mount the battery.

¾ Close the instrument.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

X5

S6

X4

S6

S6

LCD Retaining Plate

S6

X6

X6

X3

Fig. 3-9 Replacing the Color LCD Module

1145.5973.82 3.14 E-5

R&S FSH Module Replacement

Replacing the RF/IF module

¾ Open the instrument.

¾ Disconnect the flat cable (X8) and remove the tape.

¾ Disconnect the connectors (X7) and (X9).

¾ Remove the RF/IF module by unscrewing (S7).

¾ Remove the binder and BNC connector block:

¾ Loosen the four (S8) screws.
¾ Remove the connector block.

¾ Mount the new RF/IF module.

¾ Mount the binder and BNC connector block with the four (S8) screws.

¾ Connect connectors (X7) and (X9).

¾ Mount the flat cable (X8), including the ferrite.

¾ Fasten the flat calbe with the tape.

¾ Close the instrument.

¾ Perform the manual adjustment.

Refer to Chapter 2 “Adjustment”.

S7

S8

S8

X8

S8

S8

Binder and BNC
Connector Block

Tape

X7

X9

Fig. 3-10 Replacing the RF/IF Module

1145.5973.82 3.15 E-5

Module Replacement R&S FSH

Replacing the mainboard

The mainboard contains information about the instrument like the serial number. Special tools are
necessary to update this information after replacement of the mainboard. Therefore the exchange of the
mainboard is possible in a R&S Service Center, only.

¾ Open the instrument.

¾ Remove the battery.

¾ Loosen the two (S5) screws.

¾ Disconnect the connectors (X3), (X4), (X5), (X7), (X8) and (X9).

¾ Loosen the three screws (S11) and the remove the board.

Note that the two lower screws are isolated.

¾ Remove the distance screw (S12)

¾ Mount the new board and fasten (S11) and (S12).

¾ Connect connectors (X3), (X4), (X5), (X7), (X8) and (X9).

¾ Mount the Battery.

¾ Close the instrument.

¾ Perform the manual adjustment.

Refer to Chapter 2 “Adjustment”.

X9

X8

X7

S11

S11

S12

X7

X8

X5

X4

X3

S11

X1

S5

S5

Fig. 3-11 Replacing the Main Board

1145.5973.82 3.16 E-5

R&S FSH Module Replacement

Replacing the N connector

¾ Open the instrument.

¾ Remove the battery.

¾ Remove the RF/IF module by unscrewing (S7).

¾ Disconnect the flat cable (X8).

¾ Disconnect the connectors (X7) and (X9).

¾ Remove the binder and BNC connector block:

¾ Loosen the four (S8) screws.
¾ Remove the connector block.

¾ Loosen the two screws (S9) from front RF housing for each N connector.

¾ Loosen the 9 screws (S10) from the RF housing.

¾ Remove the front RF housing.

¾ Clean the center contact of solder left from the N connector to be replaced.

¾ Loosen the other two screws (S9) from the appropriate N connector.

¾ Mount the new connector by first screwing it into the rear RF housing.

¾ Solder the center connection.

¾ Mount the front RF housing (S10).

¾ Fasten the two screws (S9) to the front RF housing for each the N connector.

¾ Mount the binder and BNC connector block with the (S8) screws.

¾ Mount the flat cable (X8), including the ferrite.

¾ Connect the connectors (X7) and (X9).

¾ Mount the RF/IF module (S7).

¾ Mount the Battery and close the instrument.

¾ Perform the manual adjustment.

Refer to Chapter 2 “Adjustment”.

S9

S9

S9

S9

S8

S8

S8

S9

Rear RF Housing

S9

Front RF Housing

Binder and BNC

Connector Block

X10

S10

S10

S10

S10

S10

Fig. 3-12 Replacing the N-Connector

1145.5973.82 3.17 E-5

Module Replacement R&S FSH

Replacing the binder and BNC connector block

(See exploded view for references).

¾ Open the instrument.

¾ Disconnect the flat cable (X10).

¾ Disconnect the connector (X7).

¾ Remove the binder and BNC connector block:

¾ Loosen the four (S8) screws.
¾ Remove the connector block.

¾ Mount the binder and BNC connector block with the four (S8) screws.

¾ Connect the connectors (X7).

¾ Mount the flat cable (X10).

¾ Close the instrument.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

S8

S8

X10

S8

S8

X7

Fig. 3-13 Replacing the Binder and BNC connector block

1145.5973.82 3.18 E-5

R&S FSH Module Replacement

Replacing the power /audio connections

¾ Remove the top cover.

¾ Disconnect the connector (X2)

¾ Remove the connection wire tree from the grip cover.

¾ Mount the wire tree again.

¾ Mount the top cover.

¾ Perform the quick verification test.

Refer to Chapter 2 “Adjustment”.

X2

Fig. 3-14 Replacing the Power/ Audio Connections

1145.5973.82 3.19 E-5

Module Replacement R&S FSH

Replacing a cable from the cable set

Note: The c able set is needed in the event that a cable is damaged during the replacement of

one of the modules.

Cables from the set:
¾ 10.1: 50-p

10.2: Flat flexible cable, 8 connections

10.3: Flat cable 22-p

For replacement instructions, refer to the individual modules.

10.1

Fig. 3-15 Cable set

10.2

10.3

1145.5973.82 3.20 E-5

R&S FSH Troubleshooting

Troubleshooting

Malfunctions can have simple causes but can also be due to faulty components or modules.

These troubleshooting instructions can be used to locate causes of error down to the board level and to
return the instrument to operability by replacing boards.

We recommend that the instrument be shipped to our experts at the service centers (refer to address
list) for module replacement and further error correction.

Warning! Do not plug or unplug boards without first disconnecting the battery and

the AC Power Supply!

Note: When problems occur, first check whether any connections (cables, plug-in connections of

boards, etc) are damaged or incorrectly connected.

1145.5973.82 3.21 E-5

Troubleshooting R&S FSH

Overview of errors, causes, and possible corrective actions

This section lists various errors, the probable module causing the problem, and the suggested corrective
action.

Troubleshooting problems in switching on the instrument

• Error: R&S FSH cannot be switched on.

Note: When the instrument is switched on, a beep is issued to indicate that the instrument has
started.

Troubleshooting procedure Possible cause of error and further steps

Verify that the AC power is present.

⇓

Press the On button for > 5 s.

⇓

Open the instrument and check the battery. ⇓ Voltage > 7.2 V.

Check the connectors from the AC power
supply: X2 and X7 (refer to section “Repair”).

• Error: Display remains dark although the beep indicated that the software was started.
Troubleshooting procedure Possible cause of error and further steps

Open the instrument and check X4 (backlight
connector).

Connect the adapter to the mains and wait several
minutes until the charger has recharged the battery.

This will force the instrument to perform a software reset
and a reset of the internal RAM. The instrument firm­ware will restart and all data will be reset.

Power connector broken.

Replace the power and audio connections.
Replace the mainboard (refer to “Replacing the

module”).

Backlight connection open or backlight converter
broken.

Connect again, or replace the mainboar d or LCD colour
module.

1145.5973.82 3.22 E-5

R&S FSH Troubleshooting

• Error: Display has erroneous colours and characters.
Troubleshooting procedure Possible cause of error and further steps

Open the instrument and check X5 and X6
(LCD data).

• Error: Frequency response not compliant with specification.

This response can only be corrected at the service center. Replace the RF/IF module.

• Error: Level display very noisy.
Troubleshooting procedure Possible cause of error and further steps

Check the N connector.

⇓

Data connection broken, or circuitry on the mainboard
defective.

Connect again, or replace the mainboar d or LCD colour
module

The N connector is soiled.

Clean or replace the N connector.

Replace the RF/IF module.

• Error: Several keys on the keypad do not respond.
Troubleshooting procedure Possible cause of error and further steps

Check X3.

• Error: Power sensor does not respond properly.
Troubleshooting procedure Possible cause of error and further steps

Check X8 and X10.

The connection is not operational or the keypad is
broken.

Correct the connection, or replace the front unit.

The connection is not operating correctly, the binder
connector is broken, the mainboard is broken, or the
cables are broken.

Correct the connection.
Replace the binder and BNC connector block.

Replace the mainboard.
Replace any broken cable in the cable set.

1145.5973.82 3.23 E-5

R&S FSH Installing New R&S FSH Software

4 Software Upd ates / Installing Options

This chapter provides information on software updates and how to install options on the R&S FSH.
Additional manuals supplied along with software/f irmware updates or with options obtained later can be
recorded here.

Installing New R&S FSH Software

A new firmware version can be installed via the R&S website. You can download the newest software
version, and the new software can be loaded onto the R&S FSH by using the setup program.

The instructions are included in the program.

Installing the Options

The following options are available with the R&S FSH:
Distance to Fault Measurement for R&S FSH

Remote Control via RS-232-C

Vector Transmission and Reflection Measurements

R&S FSH-B1

R&S FSH-K1

R&S FSH-K2

1145.5750.02

1145.3458.02

1145.3387.02

1145.5973.82 4.1 E-4

R&S FSH Shipping of Instrument and Ordering of Spare Parts

5 Documents

This chapter provides information on how to order spare parts, and it also contains the spare parts list.

Shipping of Instrument and Ordering of Spare Parts

Please contact your Rohde & Schwarz support center or our spare parts ex press service if you need to
request service, repair your equipment, or order spare parts and modules.

The list of Rohde & Schwarz representatives and the addres s of our spare parts express service are
provided in the front section of this service manual.

You will need to provide the f ollowing infor m ation in order f or us to respond to your inquiries quick ly and
accurately and to determine whether the warranty for your instrument is still valid:

• Instrument model

• Serial number

• Detailed error description in case of repair

• Contact partner for checkbacks

Shipping of instrument

When shipping the instrument, be sure to provide sufficient mechanical and anti-static protection:
¾ Repack the instrum ent as it was originally packed. The antis tatic packing foil prevents unintentional

electrostatic charging from occurring.

¾ If you do not use the original packaging, include sufficient padding to prevent the instrument from

slipping inside the package. Wrap antistatic packing foil around the instrum ent to protec t it f r om elec­trostatic charging.

Shipping of a module

When shipping a module, be sure to provide sufficient mechanical and antistatic protection:

¾ Ship the module in a sturdy, padded box.
¾ Wrap the board in antistatic foil.

If the packaging is antis tatic but not conduc tive, additional conductive pac k aging is requir ed. The ad­ditional packaging is not required if the enclosed packaging is conductive.

1145.5973.82 5.1 E-5

Shipping of Instrument and Ordering of Spare Parts R&S FSH

Ordering spare parts

To deliver replacement parts promptly and correctly, we need the following information:

• R&S order number (refer to the spare part lists in this chapter)

• Designation

• Number of units

• Instrument type for the replacement part

• Contact person for possible questions

The R&S order number to be used when ordering replacement parts and modules as well as power
cables can be found further below.

Refurbished modules

¾ Ref ur bis hed modules are an economical alter native to original modules. It should be kept in m ind that

refurbished modules ar e not new, but repaired and fully tested parts. T hey may have signs of use but
they are electrically and mechanically equivalent to new modules.

¾ To find out which refurbished m odules are available, pleas e c ontac t your Rohde & Schwarz represen-

tative (or the central service division at Rohde & Schwarz in Munich).

Return of defective replaced modules

¾ Defective modules of the replacement program that can be repaired may be returned within 3

months after delivery of the replaced module. A repurchasing value is credited.

¾ Excluded ar e parts that cannot be r epaired, e.g. PCBs that are burned, br oken or dam aged by repair

attempts, incomplete modules, or parts that have endured heavy mechanical damage.

¾ Defective parts must be sent back with an accompanying document of ret urned items containing

the following information:

• R&S order number, serial number and designation of the removed part

• Precise description of the error

• R&S order number, serial number and designation of the instrument the part was removed from

• Date of part removal

• Name of the technician who exchanged the part

¾ A document of returned items is provided along with each replacement module.

1145.5973.82 5.2 E-5

R&S FSH Spare Parts

Spare Parts

The R&S Order numbers necessary for order ing replacement parts and modules c an be found in the
spare part lists provided below.

List of R&S FSH spare parts

The following table lists available spare parts together with their R&S order numbers.

Reference Part R&S Order Number
1 Battery Pack for R&S FSH

(R&S FSH-Z32)

2 Housing R&S FSH without top holster 1157.3258.00

Top holster for FSH without tracking genera-

4

5

6 Mainboard for R&S FSH 1157.3570.00
7 N connector 1157.3235.00
8 Interconnection board 1157.3587.00
9 Input unit (power and audio connectors, in-

10 Set of cables for R&S FSH 1157.3329.00
21 AC mains adapter for R&S FSH

22 AC mains adapter for R&S FSH

23 AC mains adapter for R&S FSH

AC mains adapter for R&S FSH

tor
Top holster for FSH with tracking generator 1157.3493.00
Front unit for R&S FSH3 1157.3241.00 3
Front unit for R&S FSH6 1300.7591.00
LCD module 1157.3229.00
LCD plane for FSH3 1300.7704.00
LCD plane for FSH6 1300.7710.00
RF/IF module for R&S FSH3 without tracking

generator
RF/IF Module for R&S FSH3 with tracking

generator
RF/IF Module for R&S FSH6 without tracking

generator
RF/IF Module for R&S FSH6 with tracking

generator

cluding wire tree)

(EU Version)

(UK Version)

(US Version)

(AUS Version)

1145.5796.02

1157.3487.00 2.4

1157.3606.00

1157.3612.00

1300.7604.00

1300.7610.00

1157.3270.00

1157.3293.00

1157.3306.00

1157.3312.00

1157.3370.00

1145.5973.82 5.3 E-5

Spare Parts R&S FSH

Note: The reference can be found in the exploded drawing in Chapter 3.

Important Note!

When replacing a module, please pay car eful attention to the safety instructions
and the repair instructions provided in c hapter 3 and at the beginning of this ser­vice manual.

When shipping a module, be sure to provide s ufficient mechanical and antistatic
protection.

1093.4820.82 5.4 E-5