SANDIA aerospace STX 165 User manual

STX 165 / STX 165R
Installation Manual
3700 Osuna Rd NE, Suite 711
Albuquerque, NM 87109
www.sandia.aero 306100-00

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No part of this document may be transmitted, reproduced, or copied in any form or by any means without the prior
written consent of SANDIAaerospace. Due to SANDIAaerospace’s continued product and quality improvement
programs, information contained in this document is subject to change without prior notice
Copyright 2010 SANDIA aerospace Corporation, All right rights reserved. Printed in USA
Information Subject To Export Control Laws
Record of Revisions
Revision Date Description Approval
-1 20120222 DRN 402 L. Harrison
-2 20120308 ECN 3884 L. Harrison
-3 20130311 ECN 3916 L. Harrison
-4 20130926 ECN 4004 L. Harrison
-5 20140303 ECN 4010 L. Harrison
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Table of Contents
306100-00
2
Record of Revisions....................................................................................................................................1
Table of Contents .......................................................................................................................................2
List of Illustrations.....................................................................................................................................3
Section 1 General Description...................................................................................................................4
1.1 Introduction....................................................................................................................4
1.2 STX 165 / STX 165R Product Description....................................................................4
1.3 Technical Characteristics ...............................................................................................4
1.3.1 Physical Characteristics.................................................................................................4
1.3.1.1 STX 165 Panel Mount ...................................................................................................4
1.3.1.2 STX165R Remote Mount Unit......................................................................................4
1.3.1.3 STP78 OAT Probe..........................................................................................................4
1.3.2 Electrical Characteristics - STX 165 and STX 165R.....................................................4
1.3.3 Operational Chacteristics...............................................................................................5
1.3.3.1 STX 165 Panel Mount ...................................................................................................5
1.3.3.2 STX 165R Remote Mount.............................................................................................5
1.3.3.3 ST 78 OAT Probe...........................................................................................................5
1.3.4 Certication....................................................................................................................5
Environmental Qualifaction Form - STX 165.........................................................................................6
Environmental Qualifaction Form - STX 165 R.....................................................................................7
Section 2 Installation Considerations.......................................................................................................8
2.1 General...........................................................................................................................8
2.2 Mounting Considerations...............................................................................................8
2.2.1 STX 165 Panel Mount ...................................................................................................8
2.2.1.1 Optional 3” Adapter Plate..............................................................................................8
2.2.2 STX 165R Remote Mount.............................................................................................8
2.3 Cooling...........................................................................................................................8
Section 2 Installation Procedures.............................................................................................................9
3.1 General...........................................................................................................................9
3.2 Equipment Required ......................................................................................................9
3.2.1 STX 165 Panel Mount ...................................................................................................9
3.2.1.1 Supplied .........................................................................................................................9
3.2.1.2 Required but not supplied..............................................................................................9
3.2.2 STX 165R Remote Mount.............................................................................................9
3.2.2.1 Supplied .........................................................................................................................9
3.2.2.1 Required but not supplied..............................................................................................9
3.2.2.3 Optional..........................................................................................................................9
3.3 Electrical......................................................................................................................10
3.4 Aircraft mounting.........................................................................................................10
3.4.1 STX 165.......................................................................................................................10
3.5.2 STX 165R ....................................................................................................................11
3.4.2.1 Mounting Tray .............................................................................................................11
3.4.2.2 Hard Mounting without Tray .......................................................................................12
3.5 Static Port Connection .................................................................................................13
3.6 Elecrical Connections ..................................................................................................13
3.6.1 STX 165 Panel Mount ................................................................................................13
3.6.2 STX 165R Remote Mount...........................................................................................13

List of Illustrations
3.6.3 Outside Air Temp Probe...............................................................................................14
3.6.4 Antenna Connector ......................................................................................................14
3.7 Connector Pin Out........................................................................................................16
3.7.1 STX 165 Panel Mount .................................................................................................16
3.7.2 STX 165R Remote Mount...........................................................................................17
3.8 Calibration Procedures -STX 165 Panel Mount ..........................................................18
3.9 InstallationCongurations-STX165PanelMount ...................................................18
3.9.1 OAT Sensor..................................................................................................................18
3.9.2 OAT Correction............................................................................................................19
3.9.3 RS 232 BAUD Rate Selection.....................................................................................19
3.9.4 MAX Relpy Rate .........................................................................................................19
3.9.5 Exit Installer Set Up Mode ..........................................................................................19
3.10 User Set Up Mode........................................................................................................19
3.10.1 Altitude Unit ................................................................................................................19
3.10.2 Temperature Unit .........................................................................................................20
3.10.3 Icing Alert Temp ..........................................................................................................20
3.10.4 EFT Start......................................................................................................................20
3.10.5 Auto Mode C Alt..........................................................................................................20
3.10.6 Min Brightness.............................................................................................................20
3.10.7 Default VFR Code .......................................................................................................21
3.10.8 Exit User Set Up Mode................................................................................................21
3.11 Continued Airwortiness ...............................................................................................21
3.11.1 STX 165 Panel Mount .................................................................................................21
3.11.2 STX 165R Remote Mount...........................................................................................20
Figure 3-1 Panel Cut Out Dimensions.....................................................................................10
Figure 3-2 STX 165 Top Dimensions......................................................................................11
Figure 3-3 Remote Mounting Tray Dimensions ......................................................................11
Figure 3-4 Remote Unit Dimensions w/out tray......................................................................12
Figure 3-5 J2/J3 Connector Wiring..........................................................................................13
Figure 3-6 J2/J3 Connector Hood Assembly ...........................................................................13
Figure 3-7 STP 78 OAT Probe Dimensions.............................................................................14
Figure 3-8 STP 78 OAT Probe Mounting ................................................................................14
Figure 3-9 Antenna SMAAssembly........................................................................................15
Figure 3-10 STX 165 Rear View ...............................................................................................15
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Section 1 General Description
1.1 Introduction
This manual describes the installation of the SANDIA aerospace STX 165 and STX 165 Mode C transponders. It is
intendedforusebyFAAcertiedrepairstationstoinstalltheSTX165andSTX165Rtranspondersandincludesbothme-
chanicalandelectricalinstallationinformation.Calibration,systemcongurationandcheckoutproceduresareincluded.
The installer should ensure that all functions are operating according to their intended purpose in their particular installa-
tion.
1.2 STX 165 / STX 165R Product Description
The STX 165 is a self contained, panel mounted Mode A/C transponder with a built-in 35K foot altitude encoder. The
built-in encoder supplies altitude data to the STX 165 for altitude reporting (Mode C) and outputs the altitude data on an
RS 232 data bus for interface to other avionics systems that require altitude data. A SANDIA aerospace STP 78 OAT
probe, P/N 305561-91 can be installed as an option. When the STP 78 is installed, the STX 165 will display OAT (Out-
side Air Temperature), Density Altitude and Icing Alert.
The STX 165R is a Remote Mode A/C transponder that accepts attitude data from altitude encoders, such as the SANDIA
SAE 5-35, in either a Gilham Grey code or RS 232 format.
BothunitsrelytoATCRABSinterrogationswithoneof4096possible‘squawk’codes.
1.3 Technical Characteristics
1.3.1 Physical Characteristics
1.3.1.1 STX 165 Panel Mount
1/2 3ATI Panel Cut Out
Behind Panel Dimensions 1.78”H x 3.5”W x 7.34”L (4.52cm x 8.89cm x 18.64cm)
 Weight:1.30Lbs.(.59kg)
1.3.1.2 STX 165R Remote Mount Unit
Dimensions: 3.5” H x 1.8”W x 6.9”L (8.89cm x 4.57cm x17.53cm)
 Weight:1.16Lbs.(.526kg)
1.3.1.3 STP78 OAT Probe
Dimensions .375 Dia. x 1.36 L
Weight: .067 Lbs
1.3.2 Electrical Characteristics- STX 165 and STX 165R
Power Out: 200 Watts Nominal
Transmitter Freq: 1090 MHz
Receiver Freq: 1030 MHz
Receiver Sensitivity: -74dBm Nominal at 90% reply rate
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