Becker SAR-DF 517 User manual

SAR-DF 517
4-Band Precision
Direction Finder
Installation and Operation
Manual DV 77513.03
Issue 4 September 2006
Becker Flugfunkwerk GmbH · Baden Airpark ·Gebäude B 108
77836 Rheinmünster · Telephone 07229 / 305-0
E-Mail : [email protected] or [email protected]

First Issue and Changes
Issue . . . . . 4. . . . . September 2006
List of effective pages
Page No. : Date. : Page No. : Date. :
Titlepage
ISO 9001
I-1 I-4
1-1 1-10
2-1 2-12
3-1 3-10
09/2006
09/2006
09/2006
09/2006
09/2006
DV 77513.03 Article-Number: 0551.295-071
© 2001 by Becker Flugfunkwerk GmbH
All rights reserved

Qualitätszertifikat
Sehr geehrter Kunde,
Sie haben sich für den Kauf eines Becker -
Produktes entschieden. Hiermit erhalten Sie ein
nach modernsten Fertigungsmethoden her-
gestelltes Produkt. Es wurde nach den Regeln
unseres Qualitätsmanagementsystems
entwickelt, gefertigt und geprüft.
Certificate of qualitiy
Dear Customer,
you have decided to buy a Becker product. You
are assured of receiving a product that is
manufactured using the most modern methods
available. This product was developed,
manufacturedandtestedincompliancewithour
quality management system standards.
ISO 9001
Certified Quality System
Das Becker- Qualitätsmanagementsystem ist zertifiziert nach:
The Becker quality management system is certified according to:
DIN EN ISO 9001 CERT Reg. - Nr. 12 100 20988
Zulassungen und Genehmigungen:
Licenses and Approvals:
BWB-1921Y-B07/04/01 Zulassung als Luftfahrtbetrieb für Luftfahrtgerät der Bundeswehr
ManufactureslicenseforaviationequipmenttotheGermanarmedforces
DE.21G.0075 Genehmigung als Herstellerbetrieb nach EASA Teil 21
Hauptabschnitt A, Abschnitt G
Production Organization Approval, EASA Part 21 Section A, Subpart G
DE.145.0166 Genehmigung als Instandhaltungsbetrieb nach EASA-145
Maintenance Organization Approval EASA-145

SAR-DF 517
DV 77513.03Issue 409/2006Page I-1
Table of Contents
Section 1 General Information
Page
1.1 Introduction 1-1
1.2 Purpose 1-1
1.3 Technical data 1-3
1.3.1 Electrical data 1-3
1.3.2. Interface 1-5
1.3.3 Environmental data 1-6
1.3.4 Mechanical data and weight 1-6
1.4 Frequencies of channels on maritime band 1-7
1.5 Scope of delivery 1-9
1.6 Accessories 1-9
1.7 Manuals 1-9
Fig. 1-1 4-Band precision direction finder system 1-2
Section 2 Installation
Page
2.1 General 2-1
2.1.1 Inspection before installation 2-1
2.2 Mechanical installation display unit 2-1
2.3 Mechanical installation antenna unit 2-3
2.2 Connecting cable / interwiring 2-4
2.4 Information for the installation of the antenna unit 2-5
2.5 Installation wiring 2-6
2.5.1 General 2-6
2.5.2 Panel lighting 2-8
2.6 Post-installation check 2-8

SAR-DF 517
DV 77513.03 Issue 4 09/2006 Page I-2
2.6.1 Electrical interference 2-10
Fig. 2-1 Dimensions drawing of the display unit 2-2
Fig. 2-2 Mounting drawing of the display unit 2-2
Fig. 2-3 Mounting drawig of the antenna 2-3
Fig. 2-4 Dimensions drawing of the antenna 2-4
Fig. 2-5 Montage direction of the antenna unit 2-5
Fig. 2-6 Interwiring diagram 2-7
Section 3 Operation
Page
I3.1 Important basic adjustments 3-1
3.2. Operating 3-1
3.2.1 Power-On procedure / selection of operating mode 3-1
3.2.2 General functions 3-2
3.3 Bearing mode 3-3
3.3.1 Operating elements in bearing mode 3-3
3.3.2 Display in bearing mode 3-4
3.3.3 Scanning mode when bearing Cospas/Sarsat signals 3-6
3.3.4 Cospas/Sarsat, analysing the binary continuous signal 3-7
3.3.5 Edit menu 3-8
3.4 Adjusting training frequencies 3-9
3.5 Error messages 3-10
Fig. 3-1 Selection of working mode at power on of the unit 3-1
Fig. 3-2 General operating elements of the Display Unit 3-2
Fig. 3-3 Operating elements in bearing mode 3-3
Fig. 3-4 Display page 1 (360 ° Bearing Display) 3-4
Fig. 3-5 Display page 2 (Expanded +/- 45° Bearing Display) 3-5

SAR-DF 517
DV 77513.03Issue 4 09/2006 Page I-3
Fig. 3-6 Display page 3 (Bearing Display as Text) 3-5
Fig. 3-7 Display Cospas/Sarsat analyse (page4) 3-7
Fig. 3-8 Display edit menu (page 5) 3-8
Fig. 3-9 Menu of adjustable frequencies (page 6) 3-9

SAR-DF 517
DV 77513.03Issue 4 09/2006 Page I-6
Blank

SAR-DF 517
DV 77513.03Issue 4 09/2006 Page 1-1
Section 1 General Information
1.1. Introduction
The SAR-DF 517 4-Band Precision Direction Finder System is described in ”Installation and
Operation” DV 77513.03 and “Maintenance and Repair” DV 77513.04 manuals.
The manuals contain the following sections :
Section DV 77531.03 DV 77513.04
1General Information XX
2Installation XX
3Operation XX
4Theory of Operation X
5Maintenance and Repair X
6Parts List X
7Modification and Changes X
8Circuit Diagrams X
1.2. Purpose
The SAR-DF 517 product is a general direction finder, developed for professional SAR (search
and rescue) purposes. This Direction Finder (DF) is a multiband type (118MHz…410MHz)
working with the physical Doppler-Effect.
It offers the possibility to bear and analyse traditional emergency frequencies in the UHF and
VHF band and the maritime radio band .The Cospas/Sarsat emergency signal is bearable,
despite its very short pulse length, too. It is also possible to decode and display the
Cospas/Sarsat message information.
The excellent bearing result become possible by the newly developed and patented antenna
concept (small, robust and wide-banded) and the sophisticated bearing analys is algorithms
(very complex hardware and software averaging), which deliver a quick, but nevertheless,
steady indication.
The direction finder is designed for working under rough conditions such as mobile uses on
helicopters, airplanes or vehicles.
The complete DF system comprises two units:
•Antenna Unit (AU)
•Display Control Unit (DCU)

SAR-DF 517
Page DV 77513.03 Issue 4 09/2006
1-2
The Display Control Unit (DCU) is the indicating and controlling instrument of all functions of
the direction finder. It can be seen as an interface between the direction finder and the
operator.
The Antenna Unit (AU) contains the direction finder, prober, the “heart” of the whole system,
comprising four modules. This Antenna Unit is an independent system, all calculations of
bearing and decoding (hard- and software) take place here.
Fig. 1-1 4-Band precision direction finder system

SAR-DF 517
DV 77513.03Issue 4 09/2006 Page 1-3
1.3. Technical data
1.3.1. Electrical data
Method of bearing Doppler-principle (3kHz rotational frequency,
right / left rotation)
Bearing accuracy (1) ± 5°
Internal resolution 1°
Sensitivity RF-Voltage at Receiver Input (50Ohms)
VHF<100nV; SeaBand<100nV;
UHF<100nV; 406MHz<150nV
Frequency stability ± 2.0 ppm (∆f/f = ± 210
-6)
[at temperature range - 20 °C…+ 60 °C]
Receiving channels: 8 (four of them are free adjustable)
Receiving frequencies: Emergency mode
(or see type plate for 121.500 MHz (VHF)
special customer options) 156.800 MHz (Maritime, Channel 16)
243.000 MHz (UHF)
406.025 MHz (Cospas / Sarsat)
Trainings mode
118.000 ....122.975 MHz
156.000 .....157.975 MHz
240.000 .....245.975 MHz
400.000 .....409.975 MHz
Scanning mode: When receiving Cospas/Sarsat signals additionally
the emergency frequencies 121.500 MHz and
243.000 MHz can be scanned