Technisonic Industries Limited TFM-138A Manual de usuario

VHF/FM

AIRBORNE TRANSCEIVER

MODELS TFM-138, 138A and 138B

(does not include TFM-138, s/n 1540 and up,

TFM-138B, s/n 1500 and up or TFM-138C)

Installation and

Operating Instructions

Til Document No.

95RE177

Rev. E

JULY 2000

Technisonic Industries Limited

240 Traders Blvd. E.,, Mississauga, Ontario L4Z 1W7 Tel:(905)890-2113 Fax:(905)890-5338

CAUTION

This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves

when handling printed circuit boards.

WARRANTY INFORMATION

The Model TFM-138 Series, VHF/FM Transceivers are under warranty for one year from date of

purchase. Failed units caused by defective parts, or workmanship should be returned to:

Technisonic Industries Limited

240 Traders Boulevard

Mississauga,

Ontario L4Z 1W7

Tel: (905) 890-2113 Fax: (905) 890-5338

A Page

TABLE OF CONTENTS

Paragraph Title Page

SECTION1GENERALDESCRIPTION

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Purpose of Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.4 Model Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

1.5 Technical Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

SECTION2OPERATINGINSTRUCTIONS

2.1 Operating Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

2.4 Scanning Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

2.5 Priority and Selective Memory Channel Scanning . . . . . . . . . . . . . . . . . . . . . 2-6

2.6 Direct Frequency Entry Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

2.7 Receive Frequency Simplex Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.8 Keyboard Lockout Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.9 Variable Frequency Mode Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.10 LED Display Variable Dimming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.11 90 Second Transmitter Time Out Feature . . . . . . . . . . . . . . . . . . . . . . . . .2-7

2.12 Quick Guard Programming Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

2.13 Programming CTCSS Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.14 PC Memory/Programming Download Capability . . . . . . . . . . . . . . . . . . . . . . 2-9

SECTION3 INSTALLATION INSTRUCTIONS

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Equipment Packing Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.3 Transceiver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.4 Installation Kit - Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.5 Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.6 Installation - Pin Locations and Connections . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.7 Wiring Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.7.1 Main Power +28VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.7.2 Main Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.7.3 PTT (Ground Keying) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.7.4 Front Panel Back Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

3.7.5 Audio Outputs (600 and 4 Ohms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.7.6 Audio Output Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.7.7 Mic Signal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

3.7.8 Memory Up/Memory Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

3.7.9 Data Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.8 Internal Enable/Disable Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.9 Transmitter Power Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.10 Transmitter Microphone Level Adjustments . . . . . . . . . . . . . . . . . . . . . . . . .3-7

3.11 Transmitter Sidetone Level Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.12 Main and Guard Squelch Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.13 Transmitter Deviation Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.14 Guard Receiver Audio Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

SECTION 3 INSTALLATIONINSTRUCTIONS - APPENDIX

Post Installation EMI Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

LISTOFTABLES

Table No. Title Page

3-1 1 5-Pin D Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

LISTOFILLUSTRATIONS

FigureNo. Title Page

2-1 Operator's Switches and Controls - TFM-1 38 . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 Operator's Switches and Controls - TFM-1 38A and 138B . . . . . . . . . . . .2-3

2-3 TFM-1 38 Series Transceiver PC Download Cable - Wiring Diagram . . . . . . 2-12

3-1 Outline Drawing for TFM-1 38 Series Transceiver . . . . . . . . . . . . . . . . . .3-2

3-2 Wiring Connections for TFM-1 38 Series Transceiver . . . . . . . . . . . . . . . . 3-4

3-3 Interal Enable/Disable Jumper and TX High/Low Power Adjust Locations . . . 3-6

3-4 Microphone and Sidetone Level, Main and Guard Squelch Adjustment

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

3-5 Deviation Adjustment Potentiometer Location . . . . . . . . . . . . . . . . . . . . . 3-10

IMPORTANT INFORMATION

FOR INSTALLERS

The

Technisonic TFM-138 is supplied without TSO

certification, as no such specification

presently exists for airborne VHF/

FIVI radio transceivers. This equipment provides what is

considered a "supplemental" communications, and can be installed in an aircraft on a "non

interference " basis. Installation should be performed using standard accepted procedures

applicable to aircraft radio installation.

ForCanadian installations , referenceshould be made to the basis of certification for the aircraft

and other applicable requirements to determine whether the installation of this equipment is

considered a minor modification and as such can be signed off by appropriate qualified and

licensedpersonnel.

The

TFIVI-1 38 is compliant with DO-1 60C, curve P, figure 8-4 for sinusoidal vibration test

curves forequipment installed in helicopters,with category Al as per table 4-1 for temperature

and altitudecriteria, and with categoryA for the standard humidity and environmentalcategory.

The use of red displays in the cockpit should be minimizedoravoided so as not to detract from

the attentiongettingcharacteristicsneeded in warning and caution annunciators. Red should be

used toannunciateemergency conditionsrequiring immediateresponse by the flight crew. Units

with red displays should not be located in closeproximity to warningand caution annunciators.

The installation of units with red displays mustbe evaluatedon a case by case basis to ensure

that the effectivenessof thewarningand cautionannunciators is notadverselyaffected.

iii

DO-160EnvironmentalTesting

Conditions Section DescriptionofConductedTests

TemperatureandAltitude 4.0 Rev. 1 Equipmenttestedtocategory

Vibration 8.0 Equipmenttestedwithoutshock

mountstocatagories B, M and

MagneticEffect 15.0 Equipmentis class Z

PowerInput 16.0 Equipmenttestedtocategory B

VoltageSpike 17.0 Equipmenttestedtocategory

RadioFrequencyEmissions 21.0 EquipmenttestedtocategoryA

TFM-138B

SOFTWARE CHANGE NOTE

This document does not cover operation of the Technisonic TFM-138, s/n 1500 and

onwards which have been delivered from the factory with version F14 software. For TFM-

138B's with s/n 1500 or greater, TiL Document 97RE221 should be referred to.

This document does cover the operation of TFM-138B’s with s/n 1499 or less.

1-1

SECTION 1

GENERAL DESCRIPTION

1.1 INTRODUCTION

This publication provides operating and installation information on the various TFM-138 Series,

VHF/FMTransceiversmanufacturedby TechnisonicIndustriesLimited.This include theModelTFM-

138, 138A and 138B. These units offer an extended operating frequency range with selectable

channel spacing (138B only) and is intended for use (in the US) only by government agencies or

contractors thereto, who have obtained licensing for operation in the 138-150 MHz portion of the

band.Ifthese138-Seriestransceivers areusedinCANADA, operation isrestrictedtothe following

sub bands: 138-144, 148-148.99, 149.005-150.005 and 150.05-174 MHz.

1.2 DESCRIPTION

The TFM-138 Series, Transceivers are frequency agile, fully synthesized airborne transceivers

capable of operating in the 138.000 MHz to 174.000 MHz frequency range in 2.5 KHz increments

with either 25 KHz or 12.5 KHz channel spacing. The Transceiver can operate without restriction

on any split frequency pair in the band and also incorporates a two channel synthesized guard

receiver.

The TFM-138A and 138B Transceivers provides 120 (25 in the TFM-138) operator accessible

memory positions, each of which is capable of storing a transmit frequency, receive frequency,

transmitfrequencyCTCSStone orDPLcode(DPL n/a inTFM-138),receivefrequency CTCSStone

or DPL code, an alphanumeric identifier for each channel and in the TFM-138B only, wideband (25

KHz)ornarrowband(12.5 kHz)channelspacingassignment. Operating frequencyandotherrelated

data are presented on a 48 character, two line LED matrix display. Data entry and function control

are performed via a 12 button keypad. Preset channels may also be scrolled and scanned through

keypad function activation. Data may also be entered via an MS-DOS based computer with the

provided software and optional PC download cable, P/N 943165-1.

1.3 PURPOSE OF EQUIPMENT

The TFM-138 Series, VHF/FM Transceivers are designed to provide secondary airborne

communicationstofacilitateoperations whicharetypicallyperformed in alowaltitudeenvironment.

Thetransmittersectionof thisunithasa minimum of8wattsand doesnotexceed10watts output

power, which may be reduced by a front panel switch to 1 watt, in order to reduce interference to

land based systems.

1.4 MODEL VARIATION

There are four variations of the Model TFM-138B Transceiver. All units offer identical features

and performance except for the following differences:

TFM-138B,P/N 921012-1, Option BGREENdisplayand 28 Volt back lighting.

TFM-138B, P/N 921012-1 (5V), Option B GREEN display and 5 Volt back lighting.

TFM-138B, P/N 921012-2, Option B RED display and 28 Volt back ligting.

TFM-138B, P/N 921012-2 (5V), Option B RED display and 5 Volt back lighting.

Both P/N's 921012-1 and 921012-2 are always provided with 28 Volt back lighting unless a

specific request is made for 5 Volt AC operation.

1-2

1.5 TECHNICAL CHARACTERISTICS

Specification Characteristic

GENERAL

ModelDesignation: TFM-138, TFM-138A, TFM-138B

Frequency Range: 138.000 to 174.000 MHz

Tuning Increments: 2.5 KHz

Operating Mode: F3E simplex or semi-duplex

Channel Spacing: 25 (or 12.5 KHz in 138B)

Physical Dimensions (including heatsink): Approx. 8.0" X 3.0" X 5.75"

Weight: Approx. 3.1 Lbs (1.4 Kg)

Mounting: Panel Mount via Dzus fastners

Operating Temperature Range: -40EC to +60EC

Power Requirement:

Voltage: 28.0 Vdc, ± 15%

Current: Receive - 0.7 A Max.

1 Watt Transmit - 1.3 A Max.

8-10WattTransmit-2.0 A Max.

FrequencySelection: 120 memories programmed with:

(25 memories and no DPL a) Tx Frequency/Rx Frequency

inTFM-138) b)Tx/RxCTCSStone orDPL code

c)9characteralpha numerictitle

Guard Receiver: 2 channels programmed with:

a) Tx Frequency/Rx Frequency

b) Tx CTCSS tone or DPL code

c)9characteralpha numerictitle

CTCSS squelch/encoder: All CTCSS tones available

DPL digital squelch/encoder: All standard DPL codes

(Not available in TFM-138)

DTMF encoder: All standard DTMF tones

Audio Output: 0.5 Watts into 600 ohms

Speaker Output: 2.5 Watts min. into 4 ohms

Back Lighting: 28 Volts (standard) or

5 Volts (specify)

Display Colour: Green (standard) or

Red (specify)

DPL is a trademark of Motorola Corporation

1-3

1.5 TECHNICAL CHARACTERISTICS (continued)

MAIN RECEIVER

Sensitivity at 12 dB SINAD Better than 0.35 µV

Adjacent Channel Selectivity -70 dB (25 or 12.5 KHz)

Spurious Attenuation -90 dB

Third Order Intermodulation -70 dB

Image Attenuation -80 dB

FM Acceptance ± 6 KHz

Hum and Noise Better than 50 dB

Audio Distortion less than 5%

Antenna Conducted Emission less than -70 dBm

GUARD RECEIVER

All specifications identical to main receiver

TRANSMITTER

RF Power Output 1 watt or 10 watts

Output Impedance 50 ohms

Maximum Deviation ±5 KHz (25 KHz mode)

(InTFM-138B,narrowband) ±2.5 KHz(12.5KHz mode)

SpuriousAttenuation -90dBbelow carrier level

Frequency Stability ± 0.0005%

Microphone Circuit Carbon or equivalent

Sidetone Output 0.5W (max) into 600S

HarmonicAttenuation -65dBbelowcarrier level

FM Hum And Noise -40 dB

Audio Input 50 mV at 2.5 KHz into

200 Sinput circuit for

±3.5KHzdeviation,adjst.

Audio Distortion Less than 5%

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