Garmin AT COMM25-10 25 kHz VHF Comm User Manual SL40 User Guide 560 0954 03 Rev A

Garmin AT, Inc. 25 kHz VHF Comm SL40 User Guide 560 0954 03 Rev A

Contents

Users Guide

No part of this document may be reproduced in any form orby any means without the express written consent of GarminAT, Inc.II Morrow, Garmin AT, and Apollo are trademarks ofGarmin AT, Inc.© 2003 by Garmin AT, Inc. All rights reserved.Printed in the U.S.A.Garmin AT, Inc.2345 Turner Road S.E.Salem, OR 97302U.S.A. Toll Free 800.525.6726Canada Toll Free 800.654.3415International 503.391.3411FAX 503.364.2138Visit our web page at http://www.garminat.comSend comments about this manual by e-mail to:techpubs.salem@garmin.com
Welcome ...Welcome to a new era of aviation communication. Onceagain, Garmin AT, Inc. has set new standards in featuresand ease of use for the general aviation public. TheApollo SL40 is a VHF Communications Transceiver foruse by the aviation pilot. Packaged in a new slim formfactor that helps you get the most out of limited panelreal estate without limiting features and performance.The Apollo SL40 is unequaled in providing the features,level of performance, and reliability that aviation usersexpect. The Apollo slim line series of avionics sets aprecedent that will be the standard that all other avionicswill be compared to. You can be confident in knowingthat you are the owner of the state-of-the-art in aviationcommunication. Our products are built to last and toallow for upgrading as your needs change in the future.The SL40 is also packaged in configurations to meet theneeds of customers for base station and mobileapplications. Contact the Garmin AT factory for moredetails.i
History of RevisionsDecember 1996 Original ReleaseMarch 1997 Rev. -01June 1998 Rev. -02September 2003 Rev. -02aOrdering InformationTo receive additional copies of the Apollo SL40 User’s Guide,order part #560-0954-02a. The Apollo SL40 InstallationGuide is part #560-0956-xx.ii
Table of ContentsWelcome ... ·······················iHistory of Revisions ··················iiOrdering Information ·················iiIntroduction ······················1Display·······················1Annunciators····················1Controls ······················2Buttons·······················2Basic Operation ····················3Power On/Off ···················3Volume ······················3Selecting Frequencies ···············3Frequency Monitoring ···············4Recalling a Frequency ···············4Remote (REM) ················4Auto Stack List (LST)·············5User Stored Frequencies (MEM) ·······5Weather (WTH) ················6Aborting a Frequency Recall ·········6Removing a Frequency from User Memory · 7Replacing a Frequency from User Memory· · 7Assigning an ID to a User Frequency ·····8iii
Intercom Function ·················9Stuck Mic ·····················9System Functions ···················10Software Version ·················10RF Level ·····················11Noise Level····················11Headphone Level·················11Mic Squelch 1 and 2 ···············12Transmit Mic ···················12Intercom Level ··················12Sidetone Level ··················13Display Brightness ················13SL40 Specifications ·················14Features······················14Performance ···················14Physical······················15iv
IntroductionThis guide describes the operation of the Apollo SL40VHF Communication Transceiver.Display The 1-line by 16-character display is composed of 5x7dot matrix alphanumeric high intensity LEDs. Aphotocell is located in the top left corner of the frontpanel display. The photocell automatically controls theintensity of the display from low brightness at night tohigh brightness during daylight operation. Brightnesslevels may also be controlled manually.Annunciators Several annunciators are used to help indicate theoperating modes of your Apollo SL40. The TX(Transmit) annunciator is lighted whenever you aretransmitting. If the avionics bus drops below 9 VDC, theSL40 will not transmit. An LED will be lighted abovethe MON and RCL buttons when these functions areselected. An “s” will appear to the left of the Standbyfrequency. An “m” will appear to the left of the Standbyfrequency when you are using the Monitor function. An“I” indicates the Intercom function is being used.TX - Transmits - Standby Frequencym - Monitor ModeI - Intercom1EC RCLMON MEMTXPOLLOASL40COMPULL SQUELCHVOLOFF119.80 s121.50Power/Volume/SquelchPhotocellActiveFrequencyStandbyFrequencyFlip/FlopFrequencyEmergencyChannelStoreMemoryRecallMemoryFrequencyMonitorLarge, OuterKnobSmall, InnerKnobTransmitAnnunciatorStandbySymbol
Controls Power/Volume/SquelchThe knob on the left side of the SL40 controls poweron/off, volume, and squelch test. Rotate the knobclockwise (CW) past the detent to turn the power on.Continuing to rotate the knob to the right increasesspeaker and headphone amplifier volume level. Rotatethe knob to the left to reduce the volume level. Pull theknob out to disable automatic squelch. The SL40 may beinstalled to have the on/off switch disabled and to havepower controlled from the avionics panel.Large and Small KnobsThe dual concentric knobs on the right side of the SL40are used to select frequencies or to view the featuresavailable within a function. Details are provided in theappropriate section.Buttons Five backlighted buttons allow you to access thefunctions in your Apollo SL40.Flip/Flop (Arrows)Press the Flip/Flop button to switch between the active(left-most) and standby (right-most) frequency.Switching between frequencies is disabled while you aretransmitting.EC (Emergency Channel)Press the EC button to load the Emergency Channel(121.500 MHz) as the standby frequency. The Monitorfunction is automatically enabled.MON (Monitor)Press the MON button to listen to the standby frequency.When the active frequency receives a signal, the unitwill switch automatically to the active frequency.RCL (Recall)Press the RCL button to retrieve stored frequencies.MEM (Memory)Press the MEM button to store the displayed Standbyfrequency in memory.2ECMONRCLMEMPULLSQUELCHVOLOFF
Basic OperationThis section introduces the basic operating details of theApollo SL40 VHF Communications Transceiver.PowerOn/Off Turn the Power/Volume control clockwise past the OFFdetent. The SL40 may be installed to be powered fromthe avionics panel so the on/off control will be disabled.Volume Turn the Power/Volume control clockwise to increasethe volume level and counterclockwise to decreasevolume.SelectingFrequencies New frequencies are first selected as a Standbyfrequency and then toggled to the Active side whendesired. While viewing the frequency display, use theLarge and Small knobs on the right side of the SL40 toselect the desired frequency.1. Turn the Large, outer knob to changethe values in 1 MHz increments. TheMHz selection range is between 118 and136 in 1 MHz steps.2. Turn the Small, inner knob to changethe values in 25 kHz increments. ThekHz selection range is between 000 and975 kHz in 25 kHz steps. Note that onlytwo digits are displayed to the right ofthe decimal point.Turn the Large and Small knobs clockwise to increaseand counterclockwise to decrease the frequency values.Standby frequency selection is not inhibited duringtransmit.Press the Flip/Flop button to toggle theStandby frequency to the Activefrequency.3Basic Operation119.80119.80119.80 s121.50121.50 s119.80
FrequencyMonitoring The Frequency Monitoring function allows you to listento the Standby frequency, while monitoring the Activefrequency for activity.Press the MONbutton to listen to thestandby frequency. A small “m” isdisplayed in front of the Standbyfrequency. When the Active frequencyreceives a signal, the unit will switchautomatically to the Active frequencyand then switch back when activityceases. An arrow (<or >) will point tothe frequency that you are currentlylistening to. A slight clicking soundoccurs when the radio is checking theActive frequency for activity. TheMonitor function is deactivated whenyou press MON.Recalling aFrequency The SL40 can access several areas of stored frequencies.The SL40 can also receive airport frequencies ifconnected to certain Apollo GPS receivers.Remote (REM)The Remote function will allow the SL40 to access theairport frequency database in an Apollo GPS receiver.Press RCL to view the Remote (REM)frequencies. Then, turn the Small, innerknob to display the availablefrequencies. The waypoint type andfrequency are displayed.If not connected to an Apollo GPS, orthe list is not received, the list will notbe available.4Basic Operation119.10 > m121.50MONRCLRemote(REM)Auto StackList(LST)UserMemory(MEM)Weather(WTH)Only available if connectedto Apollo GPS receiver and a list hasbeen received119.10 REM SLE119.10 ATS124.55RCL
TWR- Tower frequencyGND - Ground frequencyATS - ATIS frequencyATF- Air Traffic FrequencyAPP- ApproachARR- ArrivalAWS - Automatic Weather StationCLR- Clearance/DeliveryCTF- Common Traffic Advisory FrequencyDEP- Departure frequencyFSS - Flight Service StationRFS- Remote Flight Service StationUNI - Unicom frequencyMF- Mandatory FrequencyAuto Stack List (LST)The SL40 keeps track of the last eight Activefrequencies and stores them in a stack. Duplicatefrequencies are not stored.Press RCL and then turn the Large,outer knob to display the Auto StackList (LST).Then, turn the Small, inner knob to viewthe stored frequencies. Frequencies areshown in the order of use.User Stored Frequencies (MEM)When you press the MEMbutton the Standby frequencyis stored in User memory. The SL40 stores the last eightfrequencies selected by the user. After eight Userfrequencies are stored, you will be prompted that thestack is full (mem full). You may then remove or replacethe frequency, or abort the process. Duplicatefrequencies are not stored.Press RCL and then turn the Large,outer knob to reach the Userfrequencies.Turn the Small, inner knob to view theUser stored frequencies in numericorder.5Basic OperationRCL119.10 LST121.80119.10 MEM121.80RCL119.10 MEM124.55
Weather (WTH)The standard weather channels are stored in the memoryof the SL40. You cannot transmit on a weather channelfrequency. A small “x” to the right of the Activefrequency indicates that transmitting is not permitted.Press RCL and then turn the Large,outer knob to display the weather(WTH) channel memory.Then, turn the Small, inner knob to viewthe available weather channels.Weather Frequencies162.400 MHz162.425 MHz162.450 MHz162.475 MHz162.500 MHz162.525 MHz162.550 MHzAborting a Frequency RecallYou may abort the recall of a frequency so the currentStandby frequency will remain in place.1. Press RCL. While viewing one of thefrequency types, press MEM. If you areviewing a REM, LST, or WTHfrequency type, the display will read“Abort RCL.” If you are viewing a User(MEM) frequency type, turn the Largeknob to “Abort RCL.”2. Press MEM again to abort the recall andretain the current Standby frequency.6Basic OperationRCL119.10 WTH162.40
Removing a Frequency from User MemoryYou may edit the contents of User memory to remove itsstored frequencies when you want to make a change oryou receive a “MEM Full” message.1. Press RCL. Turn the Large knob to theUser (MEM) frequencies.2. Press MEM. Turn Large knob to show“Remove.”3. Turn the Small knob to choose thefrequency to Remove.4. Press MEM to remove the frequency.Or, turn the Large knob to “Abort” andpress MEM to cancel and leave memoryas it was.Replacing a Frequency from User MemoryYou may edit the contents of User memory to replace itsstored frequencies when you want to make a change oryou receive a “MEM Full” message.1. Select the desired new frequency withthe Large and Small knobs.2. Press RCL. Turn the Large knob to theUser (MEM) frequencies.3. Press MEM. Turn Large knob to show“Replace.”4. Turn the Small knob to choose thefrequency to Replace.5. Press MEM to replace the displayedstored frequency with the currentStandby frequency. Or, turn the Largeknob to “Abort” and press MEM tocancel and leave memory as it was.7Basic Operation
Assigning an ID to a User FrequencyFrequencies in User (MEM) memory can be given analphanumeric identifier for your ease of use.1. Press RCL. Turn the Large knob to theUser (MEM) frequencies.2. Press MEM and hold it for about twoseconds. “Assign ID” and the frequencyto be given an ID will be displayed.3. Turn the Small knob to select thedesired User frequency.4. Press MEM. Six underscored spaceswill appear and the first one will flash.5. Turn the Small knob to selectcharacters. Turn the Large knob tomove to another space. Continue toselect the desired characters.6. Press MEM to save the displayed ID.Turn the Large knob to “Done” andpress MEM.The alphanumeric ID for a frequency is displayed onlywhen looking at user stored frequencies using the recall(RCL) feature. The stored frequency is displayednumerically once selected as the active or standbyfrequency.You can remove the ID for a frequency while retainingthe frequency in User memory by setting all charactersto underscores and pressing MEM.8Basic Operation
IntercomFunction When two headphone and microphone jacks areconnected to the SL40, these headsets can be used as avoice-activated intercom.When you select the Intercom functionwith the installed selector switch, theintercom function is enabled. TheVolume control will control theheadphone listening level. The receivefunction will automatically becomeactive when a signal is detected, but thevolume will be reduced during intercomactivity. A small “I” is displayed aboveand to the left of the “s” or “m” of thestandby frequency to indicate theIntercom function is selected.The Microphone Squelch Sensitivity canbe set in the System Functions.Stuck Mic The SL40 helps protect you from a situation where themicrophone may get stuck in the ON or Transmitposition. If the microphone is keyed for longer than 35seconds, the SL40 will return to the receive mode on theselected frequency.A flashing “Stuck Mic” message will display until thetransmit key is released.NoteIn an emergency situation, if the “Stuck Mic”message remains after you have stopped keyingthe mic, turn the power off and then back on.You will then get another 35 second time-outperiod to transmit.9Basic Operation121.50 Stuck Mic
System FunctionsThe SL40 includes a number of System Functions thatgive you more information about your communicationequipment. Press and hold the MON button for aboutthree seconds to reach the System Function. Turn theLarge, outer knob to display the available functions.Adjustments are made with the Small, inner knob.SoftwareVersion The Software version is available for reference whenyou contact Technical Support.10System FunctionsSW VER x.xxSoftwareVersionRFLevelNoiseLevelTurn LARGE KnobMONPress for about two sec.HeadphoneLevel000255LowDisplayLevel0050Mic1Squelch000127 IntercomLevel000255SidetoneLevel000255HighDisplayLevel0050Mic2Squelch000127TransmitMic1+2Mic1 OnlyMic2 Only
RF Level The RF Level function shows the relative signal strengthof the frequency you are listening to. The rangedisplayed is between 0 and 255. The value willconstantly change as you are viewing it as signalconditions change.Noise Level The Noise Level function shows the relative receivednoise level of the frequency you are listening to. Therange displayed is between 0 and 255. The value willconstantly change as you are viewing it as signalconditions change.HeadphoneLevel The Headphone Level function allows you to adjust theheadphone audio level. Turn the Small knob to changethe value. Setting the value to 0 slaves the headphoneaudio level to the volume control knob. The range isfrom 0 to 255.11System FunctionsNOISE 017Hdphon LvlRFLVL 123
Mic Squelch1 and 2 The input level required to break squelch by themicrophone is set from this page. Lower numbersindicate a higher input level necessary to break squelch.Turn the Small knob to change the value. The range isfrom 0 to 127.Transmit Mic The Transmit Microphone page allows you to controlwhich microphone is permitted to transmit. You maychoose Mic 1, 2, or both. To adjust the Transmit Miccontrol:1. Press and hold the MON button forabout two seconds. This will access theSystem Functions mode.2. Rotate the Large knob to display theTransmit Mic page.3. Rotate the Small knob to select MIC1,MIC2, or MIC1+MIC2.4. Press any key to exit the SetupFunctions mode.5. Select an appropriate frequency, key thetransmitter, and talk into themicrophones to check for the intendedoperation.IntercomLevel This function adjusts the Intercom Audio Level. Turnthe Small knob to change the value. The range is from 0to 255. Setting the value to 0 slaves the sidetone level tothe volume control knob.12System FunctionsIntcom LvlMic1 Sqlch
SidetoneLevel This function displays and adjusts the sidetone audiolevel. Turn the Small knob to change the value. Therange is from 0 to 255. Setting the value to 0 slaves thesidetone level to the volume control knob.DisplayBrightness As it arrives from the factory, the SL40 automaticallyadjusts its display brightness for the current lightingconditions. A small sensor at the upper left of the displayis used for this function. There are two adjustmentsavailable for controlling the brightness level of thedisplay. The first controls the lower brightness level inthe automatic adjustment range (Lo Dsp Lvl). This is thebrightness used when in total darkness. The secondadjusts the upper limit of this range (Hi Dsp Lvl). This isused when bright light is shining on the display.The factory settings for these are at the limits of therange, 0 (Lo Dsp Lvl) and 50 (Hi Dsp Lvl). The rangecan be reduced if desired using the inner knob to adjustthe two values.Some users may wish to disable the automatic dimmingfunction. This can be accomplished by setting the highdisplay level to zero. Now the low level adjustment willset the brightness of the display directly with noautomatic adjustment made based on ambient light.13System FunctionsSidton Lvl
SL40 SpecificationsFeatures760 Communication ChannelsFrequency Range: 118 to 136.975 MHzActive and Standby Flip/Flop FrequenciesVolume Control16-Character High-Intensity Alphanumeric LED DisplayAutomatic Display Intensity ControlBacklit Keypad ControlsTransmit Status Indicator2x8 Frequency Memory and RecallStores/Recalls Eight User-Defined Frequencies(user-programmable alphanumeric naming offrequencies)Stores/Recalls Previous Eight FrequenciesFrequency Monitor Function (listens to standby whilemonitoring the active)Voice Activated IntercomDedicated Emergency Channel SelectorUpgradeable to Include GPS OptionSquelch Test FunctionStuck Mic Time-Out - 35 secondsPerformanceTransmit Power: 8 watts Carrier Power (28 watts Input Power)Input Voltage Range: 10 to 40 VDCOperating Temperature Range: -20° to +55° CCertified TSO C37d (transmitting)Certified TSO C38d (receiving)Certified TSO C128 (Stuck Mic)14SL40 Specifications
Physical1.3” (H) x 6.25” (W) x 10.5” (D)Weight: 2 lbs15SL40 Specifications
Notes16SL40 Specifications
© 2003 by Garmin AT, Inc.2345 Turner Rd., S.E.Salem, OR 97302U.S.A.Phone 503.581.8101800.525.6726In Canada 800.654.3415FAX 503.364.2138http://www.garminat.comPart #560-0954-02 Rev ASeptember 2003

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