SL40 Installation Manual - 560-0956-03 Rev B
Contents
1. RS232serialdataipt Intercom select intercom function select pulled low to turn on the intercom function e RxD n NM NE p I jPowergrund main power ground input RESSE Audio ground speaker and headphone ground connection 14 O Headphone headphone terminal output microphone input 2 00 0 0 0 0 9 IAT VIS Viewed from rear of unit 51 40 Installation Manual Limitations SECTION 4 LIMITATIONS INSTALLATION Installations are to be made in accordance with AC 20 67B or other appropriate FAA approved guidelines OPERATIONAL An aircraft radio station license is required for transmitting Please follow you local procedures SL40 Installation Manual 19 Limitations NOTES 20 SL40 Installation Manual Troubleshooting APPENDIX A TROUBLESHOOTING This appendix provides information to assist troubleshooting if problems occur after completing the installation Use Table 3 to assist in troubleshooting Table 3 Troubleshooting Guide The SL40 does not power on The unit is not getting power Check power connections breakers and main avionics switch The unit does not transmit The TxKey input is not being pulled Check the TxKey mic key input low pulled low for transmit A weather channel is selected Select a different frequency the unit will not transmit on a weather channel The input voltage is too low Incre2. 7 IMIGROPHONE INPUTS NU UL EM Ur IRA 7 TRANSMIT REY INPUT testes elie ie tutti tet denen 7 INTERCOM tasnusqa aus aquqa DOE ion 7 SERIALINIFRFAGE ancona E ille 8 ANTENNA INSTALLATION AND CONNECTIONS eee 8 POST INSTALLATION CHECKOUT iii 12 SECTION 3 SPECIFICATIONS usssccecsscsssesssssccssssosssossssssvsssesesosssseosdsssosssosssecevesssesesessseseebe000 15 EPECIRIQAIS 15 PAYSICGAL uama wakay e 15 ENVIRONMENTAL diana ese a oe SSI lele ila DI ows ee ive 15 REGEIVER PERFORMANGE 5 unn ERE 16 TRANSMITTER PERFORMANCE S S DQ OS esses ee esee e e eee see ee esee e tenete Gia 16 INTERCOM PERFORMANCE noemi lele lella ail Ue 17 CONTRO INPUTS 7 1 netto tette athe BL a A a 17 ANTENNA REQUIREMENTS nete teet ironia ele pi 17 SERIAL INTERERAGE aeneon hila nl dei 17 REAR CONNECTOR PINOUT 5 5 eitis I reete abere Mtr Mp EH ERN S 18 SECTION 4 LIMITATIONS oe tee 19 INSTALLATION scleri alri NSS a E EIE 19 OPERATIONAL siste neon ila sai asal Lote el eon eta stola 19 APPENDIX A TROUBLESHOOTING 21 CONTACTING THE FACTORY FOR ASSISTANCE
3. SL40 Installation Manual 25 Environmental Qualifications NOTES 26 SL40 Installation Manual Serial Data Specifications APPENDIX E SERIAL INTERFACE SPECIFICATIONS This appendix includes the interface specifications for the RS 232 serial port The RS 232 port can be used to input active and standby frequencies and is used to input frequencies from a remote source such as the SL50 and 2001GPS The interface format conforms to NMEA 0183 message format specifications The format of the RS 232 serial port is as follows Baud rale sauna 9600 Data bloc 8 Stop bibi ich 1 DM The data format is as follows PMRRC lt msg_id gt lt msg_data gt lt chksum gt lt cr gt The checksum is computed by an 8 bit addition of the msg id and msg data characters ignoring carry if any The resulting 8 bit checksum is converted to two ascii characters by taking the upper and lower nibbles adding 30h to each and placing the most significant character first in the data message RS 232 INPUTS SET ACTIVE FREQUENCY Message Format PMRRC00mka lt chksum gt lt cr gt 00 message id mk active frequency m desired frequency in MHz in hexadecimal where m desired frequency 30h with desired frequency in range of 118 to 136 MHz or 162 MHz k desired frequency in kHz where k desired frequency 25 kHz 30h with desired frequency in range of 000 to 975 kHz in 25 kHz steps or 0 to 39
4. Intercom O lt transmit buttons p i x ort Selector Switch optional TxD 3 BS RS 232 Serial p J Serial Ground 11 Interface Coax Antenna Com Antenna Notes 1 Connect cable shields to the rear of the mounting frame with pigtails lt 1 25 inches 2 Use shielded cable for the microphone connections 3 Use shielded cable for the RS 232 serial interface connections 4 Connect shields to chassis ground at both ends of cables Figure 5 SL40 Standalone Wiring Diagram 10 SL40 Installation Manual Power Ground Reserved Speaker Headphone Audio Ground SL40 Sii COM Mic 2 Mic Ground TxKey Intercom TxD RxD Serial Ground Antenna 5 amp fuse or breaker Avionics Power Installation Notes 2 Use shielded cable for the microphone connections 3 Use shielded cable for the RS 232 serial interface connections 4 Connect shields to chassis ground at both ends of cables 6 14 13 Note 5 YI 15 Note 5 7 4 12 Chassis Ground 3 10 _ RS 232 Serial 11 Interface L Noter Coax Com Antenna 1 Connect cable shields to the rear of the mounting frame with pigtails lt 1 25 inches Audio Panel Com Audio In Audio Ground Com Mic Audio Mic Ground Com Mic Key 5 The audio ground and mic ground connections may use a common point at the audio panel Figure 6 SL4
5. keen transceiver function N normal receive operation M enable monitor function 0 no change Example Message PMRRC00G4N29 lt cr gt Set the active frequency to 119 100MHz normal receive mode G 119d 30h 77h 30h 47h or an ascii 4 100 kHz 25 kHz 30h 4 30h 34h or an ascii 4 SL40 Installation Manual 2Z Serial Data Specifications 28 SET STANDBY FREQUENCY Message Format PMRRC01mka lt chksum gt lt cr gt 01 message id mk standby frequency m desired frequency in MHz in hexadecimal where m desired frequency 30h with desired frequency in range of 118 to 136 MHz or 162 MHz k desired frequency in kHz where k desired frequency 25 kHz 30h with desired frequency in range of 000 to 975 kHz in 25 kHz steps or 0 to 39 Qs fas transceiver function N normal receive operation M enable monitor function 0 no change Example Message PMRRC01LFM40 lt cr gt Set the standby frequency to 124 550 MHz monitor function selected REMOTE IDENT INPUT This message is used to input a new ident and reset the remote frequency input pointer Message Format PMRRCO4tiiii lt chksum gt lt cr gt 04 message id list type input 1 liil ident four character ascii Example Message PMRRC041SLE lt space gt 99 lt cr gt Set the remote frequency ident to SLE REMOTE FREQUENCY LIST INPUT This message is used to input
6. I The shield pigtails must Rage Guard be less than 25 inches Cut and place edge guard the shorter the better where appropriat to protect harness from sharp edges Figure 3 Cable Routing Once the cable assemblies are complete and the connectors are attached to the mounting frame install the mounting frame assembly in the instrument panel Be sure to use low profile 6 SL40 Installation Manual Installation head screws so the unit will slide in and out freely Attach the front of the mounting frame to the instrument panel Use support brackets to attach the rear of the frame to the aircraft To install the unit in the mounting frame make sure the cam lock is rotated so the rear part is up then slide the unit into the frame and tighten with the 3 32 hex tool The unit will be pulled into the frame by the cam lock and the connectors will fully engage To remove the unit from the mounting frame use the hex tool and turn the tool CCW The unit will be pushed out of the frame by the cam lock assembly No special extraction tools are required ELECTRICAL CONNECTIONS The SL40 installation kit includes a 15 pin dsub shell and crimp contacts The crimp contacts are specified for 20 to 24 AWG wire Make the crimp connections with a crimp tool as specified in the Special Tools Required section on page 4 All wires should be 20 to 24 AWG unless otherwise specified A wiring diagram is included as Figure 5 POWER The SL40 is interna
7. NOTES Table of Contents TABLE OF CONTENTS SECTION 1 INTRODUCTION 1 ABOUT THIS iii aaa alati 1 SCA40 DESCRIPTION Sueos bapa upataqa tes ua eee i eS 1 FEATURES PT E m 1 REGULATORY COMPLIANCE eo ne ete EE doe ina eo eo eo eT e EP dp Pee oou mau ro e eoo eee PP Eee 2 UNPACKING THE EQUIPMENT E A aaas 3 PACKAGE CONTENTS 3 OTHER REQUIREDAM ATERTALS iste reto coe e tbe te ecl eet ber iot lalu 4 SPECIAL FOOLS REQUIRED oie ete eee ee 4 LICENSE REQUIREMENTS nu apa a uu Q 4 SECTION 2 INSTALLATION cccscsssscssesssoccsdecssnsbencecosssecsensvecesoessessensbaecadeseessbecdensceenssescsescoune 5 PRE INSTALLATION INFORMA T ON 2 usa u SS a T 5 INSTALLATION OV RVE Q Sus dts Dal his 5 INSTALLATION CONSIDERATIONS 5 MOUNTING CONSIDERATIONS ii 5 MINIMUM SYSTEM CONFIGURATION f sene ne ree raa aaa aa aa e Esa rn E E a EnA A E e aa EE OESR EEE EEan 5 EQUIPMENT MOUNTING Rm 5 EEECTRICAL CONNECTIONS 7 21 E ET EES E a lo air 7 POWERS nori DE ANE I soa een Rd ul ae u L loi de has 7 SPEAKER AND HEADPHONE OUTPUTS sayasqas
8. 21 SL40 Installation Manual i Table of Contents APPENDIX PERIODIC 2 22 23 EQUIPMENT CALIBRATION ide ie m et e e dete Eri rte 23 REFERENCE OSCILLATORY aS Q T tete et ee esaet eter tue 23 CLEANING THE FRONT PANEL cette t ET 23 APPENDIX C ENVIRONMENTAL QUALIFICATION S 25 APPENDIX E SERIAL INTERFACE SPECIFICATION S 27 RS 232 INPUTS nella liebe Len E md ani q ka u eei P ayu 27 RS 232 OUTPUTS ettet distr nd e ba viene M Aime n dede Meeks Oop 29 LIST OF TABLES TABLE PACKAGE CONTENTS aiti etiem iet detto o erbe iaia tee a eee E cue ie ie 3 TABEE2 CONNECTOR oneri edente eiie nii 18 TABLE 3 TROUBLESHOOTING GUIDBE eene 21 LIST OF ILLUSTRATIONS FIGURE SLA4O FRONT BANEL 3 2 6 ci tide nie ferte iii ii 2 FIGURE 2 MOUNTING FRAME ASSEMBLY 6 FIGURE 3 CABLE ROUTING eh recen ee ee rrr eee E eh Deere dR ace Peer ree e eden 6 FIGURE 4 COAX CONNECTOR 55 7 22200 0 9 FIGURE 5 SL40 STANDALONE WIRING DIAGRAM 222 00 10 FIGURE 6 SL40 TYPICAL AUDIO PANEL CONNECTIONS me nen ene ne ne
9. crash safety Safety shocks Equipment operated normally after the crash safety shocks MM Equipment tested without shock mounts to Categories B M amp N Explosion Proofness Equipment identified as Category X no test required Waterproofness Fluids Susceptibility Equipment identified as Category X no test required Sand and Dust Equipment identified as Category X no test required Fungus Resistance Equipment identified as Category X no test required Salt Spray Equipment identified as Category X no test required Magnetic Effect Equipment is Class Z Equipment tested to Categories A amp B 10 0 Equipment identified as Category X no test required Equipment tested to Category A 18 0 Equipment tested to Categories A amp B Susceptibility Power Inputs nduced Signal Susceptibility Equipment tested to Category Z Radio Frequency Susceptibility 20 Equipment tested to Category V for conducted Category U Radiated and Conducted for radiated Emission of Radio Frequency Equipment tested to Category Z 22 gt lt lt SIE 3 5 his S m o a mts 5 5 lt ec e Susceptibility RS 232 input output tested to and Lightning Direct Effects Equipment identified as Category X no test required cing Equipment identified as Category X no test required Lightning Induced Transient Equipment tested to Categories A3 and B2 Ze 07 2 E gt lt n
10. frequencies for the remote recall function Up to 10 frequencies are accepted Message Format PMRRCOStfmk lt chksum gt lt cr gt 05 message id list type input 1 Tow frequency type 0 TWR tower frequency 8 CTF common traffic advisory frequency 1 GND ground frequency 9 DEP departure 2 ATS for ATIS Ah FSS flight service station 3 ATF air traffic frequency 3Bh RFS for remote flight service station 4 APP for approach lt 3Ch UNI for unicom SL40 Installation Manual Serial Data Specifications 5 ARR for arrival 3Dh MF mandatory frequency 6 AWS automatic weather station gt 3Eh not defined do not use 7 CLR clearance delivery 3Fh undefined for other frequency types mk frequency m desired frequency in MHz in hexadecimal where m desired frequency 30h with desired frequency in range of 118 to 136 MHz or 162 MHz k desired frequency in kHz where k desired frequency 25 kHz 30h with desired frequency in range of 000 to 975 kHz in 25 kHz steps or 0 to 39 Example Message PMRRCO511IT64 lt cr gt Input a ground frequency type 121 900 MHz REQUEST OUTPUT MESSAGE This message is used to request data output messages Message Format PMRRCO6iidda lt chksum gt lt cr gt 06 message id eee requested message ident 03 software version message dd set to 00 set to 0 Example Message PMRRC060300059 lt cr
11. gt This message requests the software version message to be output RS 232 OUTPUTS TRANSCEIVER STATUS This message is used to output the current transceiver frequencies and status Message Format PMRRC01mkmkas lt chksum gt lt cr gt DI S message id mk active frequency first mk m frequency in MHz in hexadecimal where m frequency 30h with frequency in range of 118 to 136 MHz or 162 MHz k frequency in kHz where k frequency 25 kHz 30h with frequency in range of 000 to 975 kHz in 25 kHz steps or 0 to 39 mk standby frequency second mk m frequency in MHz in hexadecimal where m frequency 30h with frequency in range of 118 to 136 MHz or 162 MHz k frequency in kHz where k frequency 25 kHz 30h with frequency in range of 000 to 975 kHz in 25 kHz steps or 0 to 39 SL40 Installation Manual 29 Serial Data Specifications transceiver status R normal receive M monitor selected T transmit enabled S stuck mic squelch test setting 0 automatic 1 test selected Example Message PMRRC01G4LFR0F0 lt cr gt The active frequency is 119 100 MHz the standby frequency is 124 550 MHz normal receive function automatic squelch selected This message is output once second SOFTWARE VERSION This message is used to output the com software version Message Format PMRRC03vvvv lt chksum gt lt cr gt 03 message id software ve
12. volume was preset at the factory to what should be an acceptable level The level can be adjusted in the System Functions mode To adjust the sidetone level 1 Press and hold the button for about two seconds This will access the System Functions mode 2 Rotate the LARGE knob to display the SIDETONE LVL page 3 Rotate the SMALL knob to change the level number The range of the number is 000 to 255 with 128 producing one half of full rated output A setting of 000 slaves the level to the Volume knob 4 Press any key to exit the Setup Functions mode 5 Select an appropriate frequency key the transmitter and talk into the microphone to check the level Receiver Squelch Adjustment Adjustments to the receiver squelch level may be performed by using the RCVR SQELCH page in the Test Mode Values may be adjusted between 25 and 100 1 Press and hold the lt gt RCL keys while switching the unit on 2 Turn the LARGE knob to the RCVR SQELCH page 3 Press the lt gt key to start selection the number will flash 4 Turn the SMALL knob to change the value Press MEM to store the value SL40 Installation Manual Installation 5 Turn the unit off to exit the Test Mode Mic Level Adjustment Those units with audio board p n 415 7008 01 or later have the ability to make adjustments to microphone sensitivity by using the MIC 1 LEVEL and MIC 2 LEVEL pages in the Test Mode 1 Press and hold the lt gt and RCL keys whi
13. 0 Typical Audio Panel Connections SL40 Installation Manual 11 Installation POST INSTALLATION CHECKOUT 12 Once the unit is installed complete the checkout procedure to verify proper operation Refer to the User s Guide for operating instructions Mounting Wiring Check Verify that all cables are properly secured and shields are connected to the rear of the mounting frame Check the movement of the aircraft controls to verify that there is no interference Receiver Transmitter Operation Tune the unit to a local frequency and verify the receiver output produces a clear and understandable audio output Verify the transmitter by contacting another station and getting a report of reliable communications Antenna Check The antenna VSWR can be checked using an inline watt meter in the antenna coax using frequencies near both ends of the band The VSWR should be lt 2 1 and is not to exceed 3 1 A VSWR of 2 1 will cause a drop in output power of approximately 12 and 3 1 causes approximately a 26 drop Interference Check Check the SL40 while operating the other avionics and electrical systems on the aircraft to verify that no significant interference exists and that the SL40 does not cause significant interference with other systems Performance should be checked using low high and mid band frequencies Repeat during the flight test for equipment that is not checked on the ground Sidetone Level Adjustment The sidetone
14. Model SL40 VHF Transceiver Installation Manual April 2004 560 0956 03 Rev B GARMIN 2004 Garmin Ltd or its subsidiaries All rights reserved Printed in the U S A Garmin International Inc 1200 East 151 Street Olathe Kansas 66062 U S A Tel 913 397 8200 Fax 913 397 8282 Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey Hampshire S051 9DL U K Tel 44 1794 519944 Fax 44 1794 519222 Garmin Corporation No 68 Jangshu 2 Road Shijr Taipei County Taiwan Tel 886 02 2642 9199 Fax 886 02 2642 9099 Garmin AT Inc 2345 Turner Road S E Salem OR 97302 U S A Tel 800 525 6726 Fax 503 364 2138 Canada Tel 800 654 3415 International Tel 503 391 3411 Cage Code 0XCJ6 Visit our web pages at http www garmin com Send comments about this manual by email to techpubs salem garmin com Except as expressly provided herein no part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage medium for any purpose without the express written permission of Garmin Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed for personal use provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unautho
15. ase input supply voltage to gt 9 volts DC page 13 levels are too low or high needs adjustment page 12 The intercom doesn t function Control input not connected The intercom select input must be pulled to ground to turn on the intercom function No voice activation or have to talk Change the intercom squelch too loud threshold using the setup function described in the user s manual CONTACTING THE FACTORY FOR ASSISTANCE If the SL40 unit fails to operate despite troubleshooting efforts contact the Garmin AT factory for assistance GARMIN International Inc 1200 East 151 Street Olathe KS 66062 3426 USA Phone 913 397 8200 FAX 913 397 8282 http www garmin com Be prepared to offer the following information about the installation e Installation configuration accessories antenna Model number part number with mod levels and serial number Software version Description of problem Efforts made to isolate the problem SL40 Installation Manual 21 Troubleshooting NOTES 22 SL40 Installation Manual Periodic Maintenance APPENDIX B PERIODIC MAINTENANCE EQUIPMENT CALIBRATION The SL40 design requires very few adjustments or calibration to be made In fact there are no internal manual adjustments REFERENCE OSCILLATOR The reference oscillator frequency should be checked approximately every 3 to 5 years to ensure the units transmit frequency is within allowable tolerance T
16. cator SL40 Installation Manual 1 Introduction Frequency memory and recall functions from remote source eight last used eight user stored Weather channels Frequency monitor function Built in intercom function Stuck mic time out Two microphone inputs Internal non volatile memory no battery required Full range input supply voltage 12 watt audio amplifier Transmit Standby Standby Large Outer Small Inner Active Annunciator Symbol Frequency Knob Knob Frequency f P 5 EN Photocell JEO MON EN Fower Volume Squelch Store Memory Flip Flop Emergency Frequency Recall Frequency Channel Monitor Memory Figure 1 SL40 Front Panel REGULATORY COMPLIANCE The SL40 is designed and tested to meet the following TSOs FAA TSO C37d for transmit FAA TSO C38d for receive FAA TSO C128 for unintentional transmission stuck mic The SL40 complies with the FCC requirements specified in CFR 47 Part 87 Aviation Services Subpart D Technical Requirements CFR 47 Part 15 Radio Frequency Devices Subpart B Unintentional Radiators The SL40 software is designed and tested to RTCA DO 178B level C 2 SL40 Installation Manual Introduction The SL40 meets the additional standards as detailed in the Declaration of Conformity included on page 31 Note Unauthorized changes or modifications to the SL40 may void the compliance to required regulatory agencies and authorization
17. ency and function control commands and outputting transceiver status This is an optional connection When making serial connections to the SL40 use a shielded three conductor cable Make the RxD TxD and ground connections on the 15 pin connector Connect the shield to the rear of the mounting frame on the connector plate The SL40 can be connected to the RS 232 serial data outputs on the 2001GPS requires software version 5 1 or later the 51 50 51 60 GX50 GX55 GX60 or the 360 Map GPS for receiving remote frequency information from the GPS navigation data base Refer to the installation manuals for those units for connections and serial data output selections Complete serial interface specifications are included in Appendix E ANTENNA INSTALLATION AND CONNECTIONS The SL40 requires a standard 50Q vertically polarized antenna Follow the antenna manufacturer s installation instructions for mounting the antenna The antenna should be mounted on a metal surface or a ground plane with a minimum area of 18 x 18 inches The antenna should be mounted a minimum of 24 inches away from GPS antennas The comm antenna should also be mounted as far apart as practical from the ELT antenna preferably one on top and the other on the bottom of the aircraft fuselage Some ELTs have exhibited re radiation problems generating harmonics that may interfere with GPS signals This can happen when the comm SL40 or any other comm is transmitting on certa
18. for continued equipment usage UNPACKING THE EQUIPMENT Carefully unpack the equipment Visually inspect the package contents for any evidence of shipping damage Retain all shipping containers and packaging material in case reshipment is necessary PACKAGE CONTENTS As shipped from the Garmin AT Inc factory the SL40 package includes most necessary items for installation other than supplies normally available at the installation shop such as wire and cable ties and required input and output equipment The items included in the package are listed in Table 1 Table 1 Package Contents Comm unit 430 6040 2xx SL40 Comm Transceiver SL40 Installation Kit Part 424 2006 2xx 162 0100 or 15 pin dsub connector shell 1 162 1575 16208 Right angle coax plug 1 _ 202 0001 2420 Shoulder bushing _ j 24440 4 40 x 1 4 SS pan head Phillips machine screw with lock washer 4 2444 4 40 1 4 SS flathead Phillips machine screw 6 245 0022 Crimp contact for dsub 20 to 24 awg wire 15 245 0027 310 5181 01 Mounting frame 310 5187 01 Connector mounting plate ERN 998 0048 3 32 hex driver 1 204 0037 Edge grommet 6 SL40 Manual Kit Part 564 0064 2xx 560 0954 xx SL40 User s manual 560 0956 xx SL40 Installation manual SL40 Installation Manual 3 Introduction OTHER REQUIRED MATERIALS The SL40 is intended for use with standard aviation accessories The followi
19. he oscillator frequency can be checked by connecting the transmitter output through an appropriate load to a calibrated frequency counter The transmit frequency should be within 15ppm of the selected channel frequency Contact the Garmin AT Inc factory for instructions on adjusting the frequency if required CLEANING THE FRONT PANEL The front bezel keypad and display can be cleaned with a soft cotton cloth dampened with clean water DO NOT use any chemical cleaning agents Care should be taken to avoid scratching the surface of the display SL40 Installation Manual 25 Periodic Maintenance NOTES 24 SL40 Installation Manual Environmental Qualifications APPENDIX C ENVIRONMENTAL QUALIFICATIONS The SL40 has been tested to the following environmental categories per procedures defined in RTCA DO 160C Environmental Qualification Form Nomenclature SL40 Manufacturer Part No 430 6040 200 Garmin AT Inc TSO No TSO C37d TSO C38d and 2345 Turner Road SE TSO C128 Salem Oregon 97302 Description of Conducted Tests Temperature and Altitude Equipment tested to Category with In flight Loss of Cooling No cooling required Altitude 6 Equipment tested to 35 000 feet Overpressure 6 Equipment tested for overpressure Temperature Variation Equipment tested to Category C 2 C min Humidity Equipment tested to Category A standard humidity environment Operational Shocks and Crash 7 Equipment tested for both operational and
20. ilot The standard package includes a mounting frame for ease of mounting connections and service of the unit Allow an additional one inch clearance to the rear of the mounting frame for connectors and cables For typical installations the SL40 does not require external cooling When mounting the SL40 leave a clearance of 1 8 to 1 4 inch between avionics to allow for circulation MINIMUM SYSTEM CONFIGURATION The SL40 requires connections to the following equipment as a minimum e power input e speaker or headphone output microphone input e an antenna EQUIPMENT MOUNTING Once the cable assemblies have been made attach the 15 pin dsub and coaxial cable connectors to the rear connector mounting plate and the mounting frame as illustrated in Figure 2 and Figure 3 Route the wiring bundle as appropriate The rear connector plate should be attached to the mounting frame before installing the frame in the instrument panel The rear connector plate can be used to tie down the cable assemblies Connect the shield grounds directly to the connector mounting plate SL40 Installation Manual 2 Installation Mounting Frame 4 40 x 1 4 Screw 4x 4 4O x 3 8 Flat Head Screw Connector Mounting Bracket 77 Edge Guard 7 5 Pin D Sub RA Coax Flug Shoulder Bushing Edge Guard Figure 2 Mounting Frame Assembly Coax Connectors to Float Freely Connect Shields to Frame
21. in frequencies such as 121 15 or 121 175 MHz which may cause the ELT output circuit to oscillate from the signal coming in on the ELT antenna coax The antenna coax cable should be made of RG 142B or a comparable quality 50Q coax Assembly instructions for the rear coax connector are included in Figure 4 8 SL40 Installation Manual Installation Clamp Nut Slit 1 4 2X Slide clamp nut over coax Strip coax as illustrated Cut two 1 4 slits in jacket 180 5 0 125 degrees apart 0 375 1 a Y Braid Cl Step Zi GER i Slide braid clamp over end of coax and under the braid Step 3 Soldar Insert coax with braid clamp into Conductor connector and tighten clamp nut securely Solder the center conductor of the coax to the contact as illustrated Attach the cap and secure tightly Assembly instructions for right angle connector part 162 1008 Figure 4 Coax Connector Assembly SL40 Installation Manual 9 Installation 5 amp fuse ux Power 1 Z Avionics Ground i Power Reserved Speaker 6 Headphone Jack Headphone 14 2 Headphone Jack Audio Ground 13 x Mic 1 8 Es 5140 wus La Mic Jack COM Mic 2 15 3 Y Mic Ground 7 N Mic Jack wu dq TASA E 5 Yoke mount Intercom 12
22. l receive 28 watts typical transmit 7 amp fast blow soldered board Power control connection Pulled low to turn unit ON floating high for unit OFF PHYSICAL Height aa iii 1 30 inches 3 30 cm Width ul ans 6 25 inches 15 88 cm Depth oaa kayaspa ph mas amuta 11 452 inches 29 09 cm behind panel including mounting frame and connectors Weight with mounting frame 2 1 Ib 0 953 kg ENVIRONMENTAL The SL40 unit is designed and tested to meet appropriate categories of RTCA DO 160C The Environmental Qualification Form is included in Appendix C Operating temperature 20 C to 55 C Storage temperature 55 C to 85 C Temperature variation 2 C per minute HUmidifyYae auqa anaku qayana sasay 95 at 50 C for 6 hours 2 day cycle Maximum altitude 35 000 feet Cooler e OR THERETO A uade Not required SL40 Installation Manual 15 Specifications E PULLSQUELGH TX fa fuon Face fnew o aw Ce J C90 9C9C 3 0 Figure 7 Unit Dimensions RECEIVER PERFORMANCE Class a Frequency range 118 000 to 136 975 MHz 760 channels Sii 1uV 2
23. le switching the unit on 2 Turn the LARGE knob to the Mic 1 LEVEL and Mic 2 LEVEL pages 3 Press the lt gt key to start selection the number will flash 4 Turn the SMALL knob to change the value Press MEM to store the value 5 Turn the unit off to exit the Test Mode Display Test It is possible to perform a simple test to observe all segments of the display for a quick checkout of the display functions 1 Press and hold the lt gt RCL keys while switching the unit on 2 Turn the LARGE knob to the DISPLAY TEST page 3 Press MEM to perform the test A series of 7 symbols will advance across the display testing each LED 4 Turn the unit off to exit the Test Mode Mic Squelch Adjustments to the squelch levels for Micl and Mic2 are available in the System Functions mode To adjust the Microphone Squelch level 1 Press and hold the button for about two seconds This will access the System Functions mode 2 Rotate the LARGE knob to display the OR MIC2 SQLCH pages 3 Rotate the SMALL knob to change the level number The range of the number is 000 to 127 4 Press any key to exit the Setup Functions mode 5 Select an appropriate frequency key the transmitter and talk into the microphone to check the level Transmit Mic The Transmit Microphone page allows you to control which microphone is permitted to transmit You may choose Mic 1 2 or both To adjust the Transmit Mic control 1 Pres
24. lly fused at 7 amps A separate 5 amp maximum circuit breaker or fuse should be installed for downline overload or short circuit protection Make the power connections to the SL40 using 20 awg wire Note Circuits should be protected in accordance with guidelines in AC 43 13 1A chapter section 2 paragraph 429 SPEAKER AND HEADPHONE OUTPUTS Connect the speaker and headphones to the output pins on the rear connector MICROPHONE INPUTS Microphone input connections should be made using a twisted pair shielded cable Attach the signal ground to the mic ground pin on the rear connector and connect the shield to the rear connector plate TRANSMIT KEY INPUT The TxKey input on the rear connector must be pulled low to ground to enable the transmitter This input should be connected to a microphone or yoke mounted momentary push button switch INTERCOM SELECTOR SWITCH The SL40 includes an intercom function that can be enabled by an external control switch This is an optional connection When making connection for the intercom selection connect the intercom selection input to a remote mounted normally open switch A momentary toggle or alternate action switch can be SL40 Installation Manual 7 Installation used Connect the other terminal of the switch to ground The intercom function is enabled when the input is pulled low to ground SERIAL INTERFACE The SL40 includes an RS232 serial port which can be used for inputting frequ
25. nd Licenses For aircraft not registered in the United States please follow you local procedures 4 SL40 Installation Manual Installation SECTION 2 INSTALLATION This section describes the installation of the SL40 including mounting wiring and connections A post installation check out procedure is included at the end of this section PRE INSTALLATION INFORMATION Always follow good avionics installation practices per FAA Advisory Circulars AC 43 13 1A 43 13 2A and AC 20 67B or later FAA approved revisions of these documents Follow the installation procedure in this section as it is presented for a successful installation Read the entire section before beginning the procedure Perform the post installation check out before closing the work area in case problems occur INSTALLATION OVERVIEW A successful installation should start with careful planning including determination of mounting location for the SL40 antenna mounting connections to microphones speakers and headphones cable routing and other required modifications Once the mounting location has been determined prepare the mounting frame for installation It may be easier to complete the wiring harness and attach the connectors to the mounting frame before installing the mounting frame INSTALLATION CONSIDERATIONS MOUNTING CONSIDERATIONS The SL40 is designed to mount in the avionics stack in the aircraft instrument panel within easy view and reach of the p
26. ng items are required for the installation comm antenna with cables e a microphone e speaker or headphone These items may be installed dedicated to the SL40 comm or by connections to an audio panel SPECIAL TOOLS REQUIRED Crimp Tool A crimp tool meeting MIL specification M22520 1 01 and a positioner locater are required to ensure consistent reliable crimp contact connections for the rear d sub connectors These tools are available from For pin p n 245 0022 Astro Tool Corp Phone 503 642 9853 21615 SW TV Highway Fax 503 591 7766 Beaverton OR 97006 Crimp tool Astro Tool part 615708 Positioner Astro Tool part 616356 For pin p n 245 0027 ITT Cannon Phone 714 261 5300 1851 E Deere Ave Fax 714 575 8324 Santa Ana CA 92705 6500 Insertion tool ITT part 274 7006 000 Desc CIET 20HD Regular duty Crimp tool ITT part 995 0001 585 Desc M22520 1 01 Regular duty Locator tool ITT part 995 0001 244 Desc TH25 Heavy duty Crimp tool ITT part 995 0001 584 Desc M22520 2 01 Heavy duty Locator tool ITT part 995 0001 604 Desc M22520 2 08 LICENSE REQUIREMENTS An aircraft radio station license is required for operation of the transmitter once installed in the aircraft An application must be submitted on FCC Form 404 which may be obtained from the FCC in Washington DC or any of its field offices Procedures for applications are in CFR 47 Part 87 Aviation Services Subpart B Applications a
27. nne enne n nein 11 FIGURE UNIT DIMENSIONS E PR e eee ree tb e OR eben ie reet beu dea ive 16 ii SL40 Installation Manual Introduction SECTION 1 INTRODUCTION ABOUT THIS MANUAL This manual describes the installation of the SL40 Comm It is intended for use by persons certified by the Federal Aviation Administration FAA to install aircraft navigation devices It includes installation and checkout procedures for the SL40 unit to standards described in FAA advisory circular AC 20 67B Provides an introduction to the SL40 unit TSO certification information is also included in this section Section 1 Section 2 Includes installation and checkout procedures Section 3 Includes complete specifications Section 4 Includes limitations for the equipment and installation Appendix A Includes troubleshooting information Appendix B Includes periodic maintenance requirements Appendix C Includes the environmental qualification form Appendix E Includes serial data specifications SL40 DESCRIPTION The SL40 is a 760 channel VHF Comm transceiver It is one member of the slimline series which includes the SL40 Comm the SL50 GPS and the SL60 GPS Comm FEATURES The features of the SL40 Comm include e 760 channels Frequency range of 118 000 to 136 975MHz Active and standby frequency display 16 character high intensity alphanumeric LED display Automatic display intensity Back lit buttons Transmit status indi
28. rized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this document is subject to change without notice Garmin reserves the right to change or improve their products and to make changes in the content of this material without obligation to notify any person or organization of such changes or improvements Garmin Garmin AT and GNS are trademarks of Garmin Ltd or its subsidiaries These trademarks may not be used without the express permission of Garmin HISTORY OF REVISIONS 12 18 96 Initial release 9 22 99 Added new connector pins and crimping tools 10 1 02 Updated ship kit information and changed II Morrow to Garmin AT 9 15 03 Company name change 4 12 04 Added license requirement comment and removed Apollo IMPORTANT NOTE The conditions and tests required for TSO approval of this article are minimum performance standards It is the responsibility of those desiring to install this article on or within a specific type or class of aircraft to determine that the aircraft operating conditions are within TSO standards The article may be installed only if further evaluation by the user installer documents an acceptable installation and is approved by the Administrator Source FAA TSO C37d TSO C38d and TSO C128 ORDERING INFORMATION To receive additional copies of this publication order part 560 0956 03 Rev B SL40 VHF COMM Installation Manual
29. rophone inputl Headphone audio output level AGC characteristic CONTROL INPUTS Transmit Key ur us asa M Intercom select ANTENNA REQUIREMENTS Specifications Two inputs standard carbon or dynamic mic with integrated preamp providing minimum 70mv rms into 1000Q load 8596 with 100mv to 1000mv rms microphone input at 1000 Hz 10 at 85 modulation at 350 to 2500 Hz lt 4db variation with 350 to 2500 Hz 85 modulation gt 35 dB down up to 280mW into 1000 120mW into 5000 10096 35 second time out reverts to receive Two inputs standard carbon or dynamic mic with integrated preamp providing minimum 70mv rms into 1000Q load 280 mW into 1000 120 mW into 5000 output varies lt 3 dB with input of 100mv rms to 1000mv rms Input pulled low to ground to enable the transmitter Input pulled low to ground to enable the intercom function The SL40 requires an antenna meeting the following specifications Standard 50Q vertically polarized antenna with a VSWR 2 5 1 SERIAL INTERFACE SL40 Installation Manual Defined in Appendix E Serial Interface Specifications 17 Specifications REAR CONNECTOR PINOUT 18 Table 2 Connector Pinout Pin VO Connection Function 3 O TxD S232 serial data output 5 NC I RxD
30. rsion Example Message PMRRC03010024 lt cr gt The software version is 01 00 This message is output once at power up and by request 30 SL40 Installation Manual Declaration of Conformity Manufacturer s name Garmin AT Inc Manufacturer s address 2345 Turner Rd SE Salem Oregon 97302 USA declares that the following product Type of equipment VHF Comm transceiver for aircraft Product name SL40 Comm Part number 430 6040 2xx conforms to the following Directives and Standards Application of Council Directives 89 336 93 68 EEC Standards EN50081 1 EN50082 1 Quality Department Garmin AT Inc SL40 Installation Manual 3l
31. s and hold the button for about two seconds This will access the System Functions mode Rotate the LARGE knob to display the TRANSMIT MIC page Rotate the SMALL knob to select MIC2 or MIC1 MIC2 Press any key to exit the Setup Functions mode Select an appropriate frequency key the transmitter and talk into the microphones to check for the intended operation Mos cup Ta SL40 Installation Manual 13 Installation Flight Test Check A flight test is recommended as a final installation verification The performance may be verified by contacting a ground station at a range of at least 50 nm while maintaining an appropriate altitude and over all normal flight attitudes Performance should be checked using low high and mid band frequencies 14 SL40 Installation Manual Specifications SECTION 3 SPECIFICATIONS This section includes detailed electrical physical environmental and performance specifications for the SL40 ELECTRICAL Input voltage 10 VDC to 40 VDC reverse polarity protected Input 270 mA typical 350 mA max at 13 75 VDC receive 140 mA typical 175 mA max at 27 5 VDC receive 2 1A typical 3 2A max at 13 75 VDC transmit 1 0 A typical 1 4 A max at 27 5 VDC transmit Note receive max at full receive audio transmit max at 90 modulation at 1000Hz Input power 4 watts typica
32. uV hard for 6 dB S N N with 30 modulation at 1000Hz ARRE IO SARA SII lt 6 dB variation at 7 kHz gt 60 dB at 22 kHz Speaker audio output level 12 watts into 40 8 watts into 80 Headphone audio output level 280mW into 1000 120mW into 5000 Pistori OB 25 lt 5 at rated output at 1000Hz AGC characteristics lt 3 dB variation in audio output from SuV to 100mV input 15 to 90 modulation Squelch control Automatic squelch with manual override TRANSMITTER PERFORMANCE 4 Output POWER 253 dere beo isa 8 watts minimum carrier at gt 12VDC input 6 watts minimum at 10VDC input transmit is locked out below 9 volts input Frequency range 118 000 to 136 975 MHz 760 channels Frequency tolerance 15ppm from 20 C to 70 C 16 SL40 Installation Manual Microphone input Modulation capability Audio frequency distortion Audio frequency response Carrier noise level Sidetone output Duts eyole bee Stuck mic time out INTERCOM PERFORMANCE Mic
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