Rohde&Schwarz FSH service manual

Page 1
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
Page 2
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
Page 3
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
Page 4
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
Page 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
Page 6
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
Page 7

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
Page 8
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.
Page 9
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.
Page 10

Spare Parts Express Service

Phone: +49 89 4129 - 12465
Fax: +49 89 41
E-mail:werner.breidling@rsd.rohde-schwarz.com
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
Page 11
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
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+49 (89) 41 29-0
+49 89 4129-121 64
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service@rsdc.rohde-schwarz.com
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Countries
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siehe / see AustriaAlbania
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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
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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-
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info@rsb.rohde-schwarz.com
+55 (11) 56 44 86 11 (general)
+55 (11) 56 44 86 25 (sales)
schwarz.com
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Schwarz.com
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schwarz.com
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Page 12
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
sherry.yu@rsbp.rohde-schwarz.com
jessica.lia@rsbp.rohde-schwarz.com
+1 (613) 592 80 00 +1 (613) 592 80 09
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info.rschina@rsbp.rohde-
+86 (28) 86 52 76 05 to 09
rsbpc@mail.sc.cninfo.net
office@rscz.rohde-schwarz.com
schwarz.com
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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
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Aix-en-Provence +33 (0) 494 07 39 94
Office Lyon +33 (0) 478 29 88 10
Office Nancy +33 (0) 383 54 51 29
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
contact@rsf.rohde-schwarz.com
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Page 13
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
services@rsindia.rohde-schwarz.com
+91 (80) 535 23 62 +91 (80) 535 03 61
rsindiab@rsnl.net
+91 (40) 23 32 24 16 +91 (40) 23 32 27 32
rsindiah@nd2.dot.net.in
+91 (11) 26 32 63 81 +91 (11) 26 32 63 73
sales@rsindia.rohde-schwarz
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rsindiam@rsnl.net
+62 (21) 252 36 08
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services@rsbj.rohde-schwarz.com
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+62 (21) 252 36 07
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rs-tehran@neda.net
+972 (3) 645 87 77 +972 (3) 645 86 66
david_hasky@easx.co.il
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jmmoss@zahav.net.il
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ornella.crippa@rsi.rohde-
mkoyama@ns.advantest.co.jp
schwarz.com
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Lebanon
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Mexico
Mexico
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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
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+7 (32) 72 63 55 55 +7 (32) 72 63 46 33
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sales@rskor.rohde-schwarz.com
service@rskor.rohde-schwarz.com
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info@rsn.rohde-schwarz.com
Schwarz.com
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schwarz.com
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Page 14
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
rs-russia@rsru.rohde-schwarz.com
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ROHDE & SCHWARZ Support Centre Asia PTE Ltd. 1 Kaki Bukit View #04-05/07 Techview Singapore 415 941
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om
Page 15
Adressen/Addresses
&Tobago
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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
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+90 (216) 385 19 17 +90 (216) 385 19 18
rsturk@superonline.com
+38 (044) 268 60 55 +38 (044) 268 83 64
+971 (2) 633 56 70 +971 (2) 633 56 71
michael.rogler@rsd.rohde-
rsuaeam@emirates.net.ae
+44 (1252) 81 88 88 (sales)
+44 (1252) 81 88 18 (service)
sales@rsuk.rohde-schwarz.com
mjn@aeromarine.com.uy
rsatv@rsa.rohde-schwarz.com
info@rsa.rohde-schwarz.com
info@rsa.rohde-schwarz.com
r_ramirez@equilabtelecom.com
schwarz.com
+971 (4) 883 71 35 +971 (4) 883 71 36
www.rsbick.de
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+58 (2) 12 34 46 26
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incotr@cantv.net
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
+84 (4) 834 61 86 +84 (4) 834 61 88
svnhn@schmidtgroup.com
Page 16
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
Page 17
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
Page 18
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- termination
1 MHz to 6 GHz
Return loss -10 dB
Noise display
1145.5973.82 1.1 E-5
Page 19
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
Page 20
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
Page 21
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
Page 22
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
Page 23
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
Page 24
R&S FSH Performance Test

Checking the displayed average noise floor

Test equipment:
Test setup: R&S FSH settings:
50-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
Page 25
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
Page 26
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
Page 27
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
Page 28
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
Page 29
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
Page 30
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
Page 31
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
Page 32
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
Page 33
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
Page 34
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
Page 35
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
Page 36
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
Page 37
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
Page 38
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
Page 39
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
Page 40
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
Page 41
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
Page 42
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
Page 43
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
Page 44
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
Page 45
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
Page 46
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
Page 47
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
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Page 48
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.
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Page 49
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.
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Page 50
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.
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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
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Page 52
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
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Page 53
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
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Page 54
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
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Page 55
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
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Page 56
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
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Page 57
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
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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
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Page 59
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
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Page 60
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
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Page 61
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
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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
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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
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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
Page 65
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
Page 66
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.
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Page 67
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
Page 68
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
Page 69
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.
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Page 70
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.
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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
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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
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