GOODRICH Stormscope Series II User manual

Stormscope®
Series II Weather Mapping Sensor
WX-950
Installation
Manual
This manual contains installation and operating instructions
and recommended flightline maintenance information for
the WX-950 Stormscope®. This information is
supplemented and kept current by Change Notices and
Service Bulletins published by Goodrich Avionics Systems.
009-10950-001 (Rev. C)
Goodrich Avionics Systems, Inc. 11 October 2001
5353 52nd Street, S.E.
Grand Rapids, MI USA 49512

A
Rev. C
ABOUT THIS MANUAL
Chapter 1 – General Information
This chapter includes equipment specifications and a functional description. It describes the various hardware
configurations and includes a list of items furnished and items required but not supplied with the equipment.
Chapter 2 – Installation
This chapter contains instructions for unpacking the equipment and inspection for in-shipment damage. It also
includes information required to locate, assemble and install the equipment.
Chapter 3 – Installation Checkout
This chapter contains instructions for doing post-installation and return to service checkout of the WX-950 using
the Goodrich Avionics SystemsWX-PA Portable Analyzer Kit.
Chapter 4 – Maintenance
This chapter contains general flightline maintenance procedures. It includes periodic maintenance and
troubleshooting; and instructions for the return of defective components.
Appendix A – Signal and Cable Characteristics
This appendix defines the electrical characteristics of all input and output signals.
© Copyright 1996-2001
Goodrich Avionics Systems, Inc.
____________________________
Trademarks
Stormscope® is a registered trademark of Goodrich Avionics Systems, Inc.
Mylar ® and Teflon® are registered trademarks of Dupont.

WX-950
Installation Manual
i
Rev. C
LIST OF EFFECTIVE PAGES
Dates of original and changed pages are: Original (Rev. 00)......................9 February 1996
Republished (Rev. B).....................23 April 1999
Republished (Rev. C)............... 11 October 2001
NOTE
The portion of the text affected by the change is indicated by a vertical line in
the outer margins of the page. Changes to illustrations (other than diagrams
and schematics) are identified with a miniature pointing hand. Shading is
used to highlight the area of diagrams and schematics containing a change.
Total number of pages in this publication consists of the following:
Page Change
No. No.
Title Page ......................................................... 0
A Page................................................................ 0
i thru Vi................................................................ 0
1-1thru 1-8........................................................... 0
2-1 thru 2-22........................................................ 0
3-1 thru 3-8.......................................................... 0
4-1 thru 4-14........................................................ 0
A-1 thru A-6......................................................... 0
INSERT LATEST CHANGED PAGES, DESTROY SUPERSEDED PAGES.
Those responsible for maintaining this publication should ensure that all previous changes have been
received and incorporated.

WX-950
Installation Manual
ii
Rev. C
FOREWORD
This manual provides information intended for use by persons who, pursuant to current regulatory
requirements, are qualified to install this equipment. Because installations vary depending on a particular
aircraft, this manual is intended as a guideline. If further information is required, contact:
Goodrich Avionics Systems
Attn: Customer Service
5353 52nd Street, S.E.
Grand Rapids, MI USA 49512
Tel. [phone] or [phone]
We welcome your comments concerning this manual. Although every effort has been made to keep it free of
errors, some may occur. When reporting a specific problem, please describe it briefly and include the
manual part number, the paragraph/figure/table number, and the page number. Send your comments to:
Goodrich Avionics Systems
Attn: Technical Publications
5353 52nd Street, S.E.
Grand Rapids, MI USA 49512
REVISION C HIGHLIGHTS
Revision “C” is a republication. This republication completely replaces the existing book. It incorporates the
basic manual and all previous changes. New and revised material has been added. Discard previous
editions of the old publication.
This revision will be kept current by change notices. As you receive change notices, replace changed pages
with the corresponding numbered page. A new list of effective pages will be issued with each change. The
list shall reflect the current changes in addition to the tabulation of all previous changes, thus providing a
complete history of the manual.

WX-950
Installation Manual
iii
Rev. C
TABLE OF CONTENTS
Paragraph Page
Chapter 1
GENERAL INFORMATION
1.1 INTRODUCTION............................................................................................................................1-1
1.2 FUNCTIONAL DESCRIPTION.....................................................................................................1-2
1.3 PHYSICAL DESCRIPTION ...........................................................................................................1-3
1.3.1 Display/Processor ............................................................................................................................1-3
1.3.2 Antenna ..........................................................................................................................................1-4
1.4 SPECIFICATIONS..........................................................................................................................1-5
1.5 INTERFACE....................................................................................................................................1-6
1.6 EQUIPMENT REQUIRED NOT SUPPLIED ...............................................................................1-6
1.7 INSTALLATION APPROVAL........................................................................................................1-6
1.8 WARRANTY INFORMATION .......................................................................................................1-6
1.8.1 Warranty Statement .......................................................................................................................1-6
1.8.2 Related Policies and Procedures.....................................................................................................1-7
Chapter 2
INSTALLATION
2.1 INTRODUCTION............................................................................................................................2-1
2.2 UNPACKING AND INSPECTING................................................................................................2-1
2.3 PRE-INSTALLATION TEST PROCEDURE.................................................................................2-1
2.3.1 Equipment Required.......................................................................................................................2-1
2.3.2 Test Procedure.................................................................................................................................2-2
2.4 ANTENNA LOCATION..................................................................................................................2-3
2.4.1 Interference Sources........................................................................................................................2-4
2.4.2 Skin Current....................................................................................................................................2-4
2.4.3 Skinmapping....................................................................................................................................2-4
2.4.4 Ground Plane...................................................................................................................................2-4
2.4.5 Alignment .....................................................................................................................................2-5
2.4.6 Slipstream .....................................................................................................................................2-5
2.4.7 Site Selection ...................................................................................................................................2-5
2.5 ANTENNA AND DOUBLER INSTALLATION............................................................................2-6
2.6 DISPLAY/PROCESSOR LOCATION.............................................................................................2-8
2.7 CABLE REQUIREMENTS AND FABRICATION........................................................................2-8
2.7.1 Antenna Cable ..............................................................................................................................2-11
2.7.2 Power Cable...................................................................................................................................2-12
2.7.3 Heading Input Cable.....................................................................................................................2-12
2.7.4 Inhibit Line ...................................................................................................................................2-15
2.7.5 Remote Clear Line.........................................................................................................................2-15
2.8 MATING CONNECTOR ASSEMBLY .........................................................................................2-16
2.9 DISPLAY/PROCESSOR INSTALLATION..................................................................................2-20
2.10 PERFORMANCE TEST................................................................................................................2-21

WX-950
Installation Manual
iv
Rev. C
TABLE OF CONTENTS
Paragraph Page
Chapter 3
INSTALLATION CHECKOUT
3.1 INTRODUCTION ...........................................................................................................................3-1
3.2 CONTROLS.....................................................................................................................................3-1
3.3 POST-INSTALLATION CHECKOUT...........................................................................................3-2
Chapter 4
MAINTENANCE
4.1 INTRODUCTION ...........................................................................................................................4-1
4.2 CONTINUED AIRWORTHINESS.................................................................................................4-1
4.3 PERIODIC MAINTENANCE.........................................................................................................4-1
4.3.1 Display/Processor............................................................................................................................4-1
4.3.2 Antenna ...........................................................................................................................................4-1
4.4 SERVICE MENU............................................................................................................................4-2
4.4.1 System Data ....................................................................................................................................4-2
4.4.2 Fault Log .........................................................................................................................................4-4
4.4.3 CRT Test Pattern............................................................................................................................4-5
4.4.4 Noise Monitor..................................................................................................................................4-6
4.5 FAULT ISOLATION.......................................................................................................................4-8
4.6 TROUBLESHOOTING ELECTRICAL NOISE ..........................................................................4-12
4.7 FUSE REPLACEMENT ...............................................................................................................4-13
4.8 RETURN TO SERVICE CHECK.................................................................................................4-14
4.9 DISPOSITION OF FAILED ITEMS............................................................................................4-14
Appendix A
WX-950 INTERFACE SIGNAL & CABLE CHARACTERISTICS
INTRODUCTION .......................................................................................................................................A-1
SIGNAL CHARACTERISTICS..................................................................................................................A-1

WX-950
Installation Manual
v
Rev. C
LIST OF ILLUSTRATIONS
Figure Page
1-1 System Functional Diagram..........................................................................................................1-2
1-2 Display/Processor Unit (P/N 805-10950-001/002)........................................................................1-3
1-3 NY-163 Antenna (P/N 805-10930-001/002) ..................................................................................1-4
1-4 Antenna Doubler Plate (P/N 78-8060-5959-2)..............................................................................1-4
2-1 Test Cable.......................................................................................................................................2-2
2-2 Test Setup.......................................................................................................................................2-2
2-3 Antenna Mounting Holes...............................................................................................................2-6
2-4 Antenna and Doubler Installation................................................................................................2-7
2-5 Interconnect Wiring.......................................................................................................................2-9
2-6 Antenna Cable..............................................................................................................................2-11
2-7 Antenna Cable Preparation.........................................................................................................2-11
2-8 Heading Input Cable....................................................................................................................2-13
2-9 Heading Input Cable Preparation...............................................................................................2-14
2-10 Mating Connector.........................................................................................................................2-16
2-11 Heading Flag (KCS55) Connection.............................................................................................2-29
2-12 Instrument Panel Cutout and Mounting Holes .........................................................................2-20
2-13 Display/Processor Installation ....................................................................................................2-21
3-1 Controls ..........................................................................................................................................3-1
3-2 Self-Test in Progress......................................................................................................................3-2
3-3 Self-Test Passed.............................................................................................................................3-2
3-4 Recoverable Error Message...........................................................................................................3-3
3-5 Fatal Error Message......................................................................................................................3-3
3-6 360°Weather View at 200 nmi Range..........................................................................................3-4
3-7 Aircraft Test Setup.........................................................................................................................3-5
3-8 WX-PA Antenna Alignment ..........................................................................................................3-6
4-1 Service Menu..................................................................................................................................4-2
4-2 System Data, Page 1......................................................................................................................4-3
4-3 System Data, Page 2......................................................................................................................4-4
4-4 System Data, Page 3......................................................................................................................4-4
4-5 Fault Log ........................................................................................................................................4-5
4-6 CRT Test Pattern...........................................................................................................................4-6
4-7 Noise Monitor.................................................................................................................................4-6
4-8 Test Strikes ....................................................................................................................................4-7
4-9 Replacing the Fuse.......................................................................................................................4-13

WX-950
Installation Manual
vi
Rev. C
List of Tables
Table Page
1-1 WX-950 System Part Numbers.....................................................................................................1-1
1-2 Antenna Cable Part Numbers.......................................................................................................1-1
1-3 WX-950 Installation Kit P/N 817-10950-001 ...............................................................................1-1
1-4 Hardware Package P/N 817-10951-001........................................................................................1-1
2-1 Heading Input Cable Vendors ....................................................................................................2-13
2-2 Stepper Input Connections (KI-525 Indicator)..........................................................................2-14
2-3 Synchro Connections to Mating Connectors ..............................................................................2-15
2-4 Antenna Cable Connections........................................................................................................2-16
2-5 Heading Input Connections ........................................................................................................2-17
2-6 Configuration Jumpers ...............................................................................................................2-17
2-7 Jumper Configuration Resistance..............................................................................................2-18
4-1 Error Messages..............................................................................................................................4-9

WX-950
Installation Manual
1-1
Rev. C
CHAPTER 1
GENERAL INFORMATION
1.1 INTRODUCTION
This section contains a functional description of the Stormscope® model WX-950 Series II weather
mapping system, outlines the main features of the system, and provides a functional block diagram. The
basic WX-950 System (see table 1-1) consists of the following equipment:
•Display/Processor P/N 805-10950-001 (Black Bezel) or P/N 805-10950-002 (Gray Bezel)
•NY-163 Antenna P/N 805-10930-001 (White) or P/N 805-10930-002 (Black)
•Installation Kit P/N 817-10950-001
•Antenna Cable (ordered separately). Antenna cables, with the antenna connector pre-wired to
one end, are available in 6, 12, 25, 50 and 75 ft. lengths (see table 1-2). To meet different space
requirements the antenna connector can be ordered with either a straight or right-angle
backshell. Most installations will require the right-angle backshell.
Components supplied with the installation kit are identified in tables 1-3 and 1-4.
Table 1-1. WX-950 System Part Numbers
BEZEL ANTENNA
SYSTEM P/N BLACK GRAY WHITE BLACK
830-10950-001 X X
830-10950-002 X X
830-10950-003 X X
830-10950-004 X X
Table 1-2. Antenna Cable Part Numbers
PART NUMBER
LENGTH
(ft.) RIGHT-ANGLE BACKSHELL STRAIGHT BACKSHELL
6 803-10950-004 803-10952-004
12 803-10950-005 803-10952-005
25 803-10950-001 803-10952-001
50 803-10950-002 803-10952-002
75 803-10950-003 803-10952-003
Table 1-3. WX-950 Installation Kit P/N 817-10950-001
QUANTITY PART NUMBER DESCRIPTION
1 78-8060-5979-2 Antenna Doubler Plate
1 78-8060-5977-6 Antenna Gasket
1 817-10951-001 Hardware Package (see table 1-4)
Table 1-4. Hardware Package P/N 817-10951-001
QUANTITY PART NUMBER DESCRIPTION
1 814-10956-001 Rear Cable Connector Assembly
1 814-10959-001 Connector Shell Assembly
1 78-8060-5733-3 Circuit Breaker Label
1 606-10010-001 Cable Clamp, 7/16”
1 606-10009-001 Cable Clamp, 3/8”
2 606-10012-001 Cable Tie, 5-5/8”
2 101-10091-001 Brass Locking Terminal
4 100-10075-001 Screw, 6-32 x 1/2 PP SS Black Oxide UNC-2A
3 101-10098-001 Stop Nut, Elastic 10-32 S.S.
2 26-1004-1394-2 Washer, .2 ID x .325 OD S.S.
3 26-1004-9316-7 Stop Nut, Elastic 4-40
2 26-1004-9152-6 Screw, 10-32 x 1 1/2 PPH S.S.
2 26-1010-0057-3 Screw, 10-32 x 3/8 TRUS PH S.S.

WX-950
Installation Manual
1-2
Rev. C
1.2 FUNCTIONAL DESCRIPTION
The WX-950 is a TSO certified thunderstorm mapping system designed for airborne use. The system maps
electrical discharge activity 360 degrees around the aircraft to a distance of 200 nautical miles. Figure 1-1
is a simplified functional diagram that shows how the components are connected to each other and to other
aircraft systems.
Figure 1-1. System Functional Diagram
The WX-950 is a passive system that listens for electromagnetic signals with a receiving antenna. The
antenna detects intra-cloud, inter-cloud, or cloud-to-ground electrical discharges within a 200-nmi radius of
the aircraft and sends the resulting “discharge signals”to the display/processor. The processor digitizes,
analyzes, and converts the discharge signals into range and bearing data. This information is stored in the
storm buffer. The display shows discharges as cell or strikes depending on the display mode selected.
To maintain proper storm display orientation during turns, the WX-950 can be connected to an external
heading source. The heading source may be synchro XYZ or stepper (King KCS55) format.