Garmin SL40 User Manual 2

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Welcome ...

Welcome to a new era of aviation communication. Once again, Garmin AT, Inc. has set new standards in features and ease of use for the general aviation public. The Apollo SL40 is a VHF Communications Transceiver for use by the aviation pilot. Packaged in a new slim form factor that helps you get the most out of limited panel real estate without limiting features and performance. The Apollo SL40 is unequaled in providing the features, level of performance, and reliability that aviation users expect. The Apollo slim line series of avionics sets a precedent that will be the standard that all other avionics will be compared to. You can be confident in knowing that you are the owner of the state-of-the-art in aviation communication. Our products are built to last and to allow for upgrading as your needs change in the future.

The SL40 is also packaged in configurations to meet the needs of customers for base station and mobile applications. Contact the Garmin AT factory for more details.

History of Revisions

December 1996 Original Release March 1997 Rev. -01 June 1998 Rev. -02 September 2003 Rev. -02a

Ordering Information

To receive additional copies of the Apollo SL40 User’s Guide, order part #560-0954-02a. The Apollo SL40 Installation Guide is part #560-0956-xx.

Table of Contents

Welcome ... ·······················i

History of Revisions ··················ii

Ordering Information ·················ii

Introduction ······················1

Display·······················1

Annunciators····················1

Controls ······················2

Buttons·······················2

Basic Operation ····················3

Power On/Off ···················3

Volume ······················3

Selecting Frequencies ···············3

Frequency Monitoring ···············4

Recalling a Frequency ···············4

Remote (REM) ················4

Auto Stack List (LST)·············5

User Stored Frequencies (MEM) ·······5

Weather (WTH) ················6

Aborting a Frequency Recall ·········6

Removing a Frequency from User Memory · 7

Replacing a Frequency from User Memory· · 7

Assigning an ID to a User Frequency ·····8

iii

Intercom Function ·················9

Stuck Mic ·····················9

System Functions ···················10

Software Version ·················10

RF Level ·····················11

Noise Level····················11

Headphone Level·················11

Mic Squelch 1 and 2 ···············12

Transmit Mic ···················12

Intercom Level ··················12

Sidetone Level ··················13

Display Brightness ················13

SL40 Specifications ·················14

Features······················14

Performance ···················14

Physical······················15

Introduction

This guide describes the operation of the Apollo SL40 VHF Communication Transceiver.

Transmit

Active

Frequency

Photocell

Power/Volume/Squelch

Display

Annunciator

COM

119.80 s121.50

PULLSQUELCH

VOL

OFF

Flip/Flop

Frequency

The 1-line by 16-character display is composed of 5x7

Standby

Symbol

EC RCL

Emergency

Channel

Standby

Frequency

MON MEM

Frequency

Monitor

Large, Outer

Knob

POLLOASL40

Memory

Recall

Memor

Small, Inner

Knob

Store

dot matrix alphanumeric high intensity LEDs. A photocell is located in the top left corner of the front panel display. The photocell automatically controls the intensity of the display from low brightness at night to high brightness during daylight operation. Brightness levels may also be controlled manually.

Annunciators Several annunciators are used to help indicate the

operating modes of your Apollo SL40. The TX (Transmit) annunciator is lighted whenever you are transmitting. If the avionics bus drops below 9 VDC, the SL40 will not transmit. An LED will be lighted above the MON and RCL buttons when these functions are selected. An “s” will appear to the left of the Standby frequency. An “m” will appear to the left of the Standby frequency when you are using the Monitor function. An “I” indicates the Intercom function is being used.

TX - Transmit s - Standby Frequency m - Monitor Mode I - Intercom

Controls Power/Volume/Squelch

PULLSQUELCH

VOL

The knob on the left side of the SL40 controls power on/off, volume, and squelch test. Rotate the knob clockwise (CW) past the detent to turn the power on. Continuing to rotate the knob to the right increases

OFF

speaker and headphone amplifier volume level. Rotate the knob to the left to reduce the volume level. Pull the knob out to disable automatic squelch. The SL40 may be installed to have the on/off switch disabled and to have power controlled from the avionics panel.

Large and Small Knobs

The dual concentric knobs on the right side of the SL40 are used to select frequencies or to view the features available within a function. Details are provided in the appropriate section.

Five backlighted buttons allow you to access the

Buttons

functions 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 are transmitting.

EC (Emergency Channel)

Press the EC button to load the Emergency Channel (121.500 MHz) as the standby frequency. The Monitor function is automatically enabled.

MON (Monitor)

MON

Press the MON button to listen to the standby frequency. When the active frequency receives a signal, the unit will switch automatically to the active frequency.

RCL (Recall)

RCL

Press the RCL button to retrieve stored frequencies.

MEM (Memory)

MEM

Press the MEM button to store the displayed Standby frequency in memory.

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