Ericsson LBI-38378D User Manual

LBI-38378D

Maintenance Manual

M-PA



VHF

PORTABLE FM RADIO

ERICSSONZ

TABLE OF CONTENTS

REAR COVER ASSEMBLY . . . . . . . LBI-38597

FRONT CO VE R ASSEMBLY (EARLIER)

AND CONTROL BOARD . . . . . . . . LBI-38384

FRONT CO VE R ASSEMBLY (LAT ER)

LESS CONTROL BOARD . . . . . . . . LBI-38834

CONTROL BOARD (LATER) . . . . . . LBI-38828

VHF SERVICE SECTION . . . . . . . . LBI-38385

LBI-38378D

TABLE OF CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

OPTIONS AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

REAR COVER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

FRONT COVER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

ANTENNAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

BATTERY PACKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

UNIVERSAL DEVICE CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

PROGRAMMING

FEATURES PROGRAMMABLE ON A PE R CHANNE L BASIS . . . . . . . . . . . . . . . . . . . . . . 9

FEATURES PROGRAMMABLE ON A PER MODE BASIS . . . . . . . . . . . . . . . . . . . . . . . . 9

FEATURES PROGRAMMABLE ON AN OVERALL RADIO BASIS . . . . . . . . . . . . . . . . . . . 9

OPERATOR MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

OPERATING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

INTRINSICALLY SAFE USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

BATTERY PACKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

DISASSEMBLY/ REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ILLUSTRATIONS

Figure 1 - System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 2 - Scan Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3 - Select Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4 - Side Vie w (All Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5 - UDC Pin-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figures 7, 8 - Disassembly/Reassembly Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figures 9, 10 - Disassembly/Reassembly Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 11 - Rear Cover Assembly Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 12 - Front Cover Assembly (Earlier) And Control Board Block Diagram . . . . . . . . . . . . . . . 17

Table 1 -VHF Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 2 - UDC Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 3 - Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Page

NOTICE

This manual covers Ericsson and General Electric products manufactured and sold by Ericsson Inc.

NOTICE

Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the manufacturer could void the user’ s authority to operate the equipment in addition to the manufacturer’ s war ranty.

NOTE

The software contained in this device is copyrighted by Ericsson Inc. Unpublished rights are reserved under the copyright laws of the United States.

This manual is published by Ericsson Inc., without any warranty. Improvements and changes to this manual necessitated by typographical errors , inaccuracies of current information, or improvements to programs and/or equipment, may be made by Ericsson Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Ericsson Inc.

SPECIFICATIONS*

GENERAL

Frequency Bands FCC TYPE DOC

146 - 162 MHz AXATR-182-B5 TR-182-D2 157 - 174 MHz AXATR-182-C5 TR-182-D2

136 - 150.8 MHz Frequency Stability 5.0 ppm Channel Capacity

Select Model 16

Scan Model 192

System Model 192 Maximum Frequency Separation full bandsplit Channel Spacing 30 kHz Operating Temperature Range -30°C to +60°C Maximum Relative Humidity 90% at 55°C

LBI-38378D

Battery Voltage 7.5 Vdc (nominal) Dimensions (H x W x D)

less battery, knobs and antenna 140 x 69 x 38 mm (5.52 x 2.72 x 1.50")

with Extra High Cap. Battery 232 x 69 x 40 mm (9.15 x 2.72 x 1.58") Weight

less battery and antenna 540 grams (19 ounces)

with Extra High Cap. Battery 907 grams (32 ounces)

TRANSMITTER

Rated RF Power Output 6.0 Watts High / Low RF Power Output 6.0 Watts / 1 Watt (programmable per channel) Maximum FM Deviation ±5 kHz FM Hum and Noise -45dB (companion receiver) Spurious and Harmonic Emissions -75 dBc Audio Response +1 to -3dB (6 dB/oc tave pre-emphasis from 300 Hz to 3 kHz) Audio Distortion less than 3% (at 1000 Hz tone, 3 kHz deviation)

RECEIVER

Sensitivity (12 dB SINAD) -116 dBm (0.35 µV) Adjacent Channel Selectivity -80dB Critical Squelch 10dB SINAD Intermodulation -78dB Spurious and Image Rejection -80dB Audio Output 500 mW (24-ohm load impedance) Audio Response +2 to -8dB (6 dB/octave de-emphasis from 300 Hz to 3 kHz) Audio Distortion less than 5% (at 500 mW)

* These specifications are intended primarily for the use of the serviceman. See the appropriate Specifications Sheet for

the complete specifications.

LBI-38378D

OPTIONS AND ACCESSO RIES

Radios, Antennas, Batteries

Carrying Accessories

A udio Accessories

Chargers

LBI-38378D

INTRODUCTION

The M-PA radi o is a high quality microprocessor con-

trolled synthesized portable FM radio. M-PA operation is highlighted by the rad io’s programming versatility. This allows tailored operation of the portable radio to meet the needs of the radio system and the individual users. Three ( 3) different M-PA radio models are available: Select, Scan and System.

The M-PA S elect model radio is the basic version that

can be programmed with up to sixteen (16) channels. This unit features an 8-digit alphanumeric liquid crystal display (LCD) and a 16-position knob for channel selection. The display is backlit for nighttime and low-level ambient light operation.

Scan and System model radios have an LCD similar to

the Select model radio. A keypad is ad ded to these radios (4button on Scan model, 16-button on System model) to provide additional features not available on the Select model radio. These radios can be programmed with up to 192 different radio channels. Bot h also provide scan cap ability including dual-priority scan, and DTMF telephone interconnect of up to ten (10) preprogrammed numbers. The telephone numbers can be recalled at will and initiated. The System model’s numeric keypad allows editing of the ten preprogrammed numbers and manual DTMF telephone inter-connect dialing.

FEATURES

192-Channel Capability

•

radios can be programmed with up to 192 channels accessed in 12 modes (banks of channels) with 16 channels in each mode or 16 modes with 12 channels in each mode. The Select model radio can be programmed with a maximum of 16 channels.

Backlit Liquid Crystal Display

•

alphanumeric LCD provides programmable custom i zat io n an d feed ba ck to t h e op er at o r of vari ou s operating conditions. Status flags located above and below the digits alert the operator to various radio conditions such as channel busy, transmitter in operation, or a low battery condition. Scan and System model radios have additional status flags for scan operation. LCD backlighting can be enabled or disabled on a per channel basis.

Rotary Control Knob

•

radios, the 16-position top-mounted Control Knob allows easy selection of modes (banks of channels), channels or Channel Guard (CG) according to how the radio is programmed. On the Select model radio, the Control Knob selects the operating channel. A stop-plate may be installed under the knob to limit the

- Scan and System models

- The 8-digit

- On Scan and System model

maximum number of positions to less than sixteen (16). It is normally factory installed for fifteen (15) positions.

Volume Control Knob

•

provides quick and easy adjustments to the volume level. Minimum volume levels can be programmed into the unit. This feature prevents missed calls due to a low volume setting.

Monitor Button

•

to disabled squelch and if programmed for the selected channel, it is used to toggle CG and/or T99 operation on and off.

Keypad

•

keypad on its front panel that provides scan and menu control. The menus allow selection of the current operating mode (bank of channels) and/or channel depending upon the radio’s programming. The menus also allow control of various other radio features such as selection of stored telephone interconnect numbers for auto-dial operation, and alert tone enable/disable control. A System model radio has a 16-button keypad. The top four (4) buttons are identical to the Scan model keypad, providing scan and menu control. The lower twelve (12) buttons form a numeric keypad that allows manual DTMF telephone interconnect dialing and editing of telephone interconnect numbers stored in the radio. Select model radios do not have a keypad.

Scan Capability

•

be programmed for non-priority scan or dual-priority scan operation. Scan programming options include a keypad entered scan list or a fixed scan list. Priority scan programming options include a fixed priority-one channel or the selected channel as the priority-one channel. The radio c an be p rogr amme d to scan on ly the channels in the curr ent mode (bank of channels) or it may be programmed to scan across modes. The S elect model radio do es not support scan operation.

Telephone Interconnect Capability

•

System model radios can store up to ten (10) telephone interconnect numbers for auto-dial operation. These numbers are preprogrammed into the Scan model radio. In the System model radio, the numbers can be preprogrammed, operator-entered and/or edited via the numeric keypad. The System model’s numeric keypad also allows manual DTMF tele phone interconnect dialing. The Select model radio cannot initiate telephone interconnect calls.

- The Scan model radio has a 4-button

- This side-mounted button is used

- Scan and System model radios can

- This rotatable control

- The Scan and

LBI-38378D

• Programmable Multi-Tone Channel Guard

(CTCSS) - Channel Guard tone frequencies within

the range of 67 H z to 210.7 Hz, including all of the standard EIA frequencies, can be programmed for encoded/de coded operation.

• Programmable Multi-Code Digital Channel

Guard - Similar capability as with tone Channel

Guard is provided.

• Two-Tone Sequential (T99) Decode - Selective

calling decode is enabled or disabled on each individual channel. Two (2) sets of unique de-codes are programmable to allow large systems individual and group call capability. Sets are selectable on a mode (bank of channels) basis.

• Channel Busy Lockout - Personality information

includes transmit disable capability on a channel where carrier activity is present This feature is selectable o n a per channel basis.

• GE-STAR Compatibility - The radio can be

programmed to transmit GE-STAR at PTT key, at PTT unkey, or both. 16,384 individual ID codes are available.

• Emergency Signalling Feature - GE-STAR

emergency signalling can be enabled by the red Emergency/Home Button on the top of the radio or it can be enabled by a lanyard connected to the UDC.

• Home Button - The radio can be programmed to

switch to a home mode or channel (depending on Control Knob’s programming) when the red Emergency/Home Button on the top of the radio is pressed.

• Programmable Carrier Control Timer - A

programmable transmit timer will automatically disable the transmitter and provide an alerting tone after time-out. This feature prevents radio damage and unnecessary channel traffic in the event of a "stuck" mic. The CCT is reset on every PTT.

• Programmable Transmit P ower Le v el - Transmitter

power level is PC programmable into the radio (high or low) on a per channe l basis.

• Squelch Tail Elimination - Squelch and audio

circuits are designed so that annoying squelch pops which may occur at the end of received messages are minimized. This feature is compatible with existing STE systems.

• Alert Tones - Alert tones prompt the operator of

various radio conditions such as key pressed, CCT time-out or a low battery.

• Power-Up Self-Test - At power-up the radio

automatically performs a diagnostic test on itself and reports any found error s via the LCD.

• Programmable via the Universal Device Connector

(UDC) - The entire operation of the radio can be field

customized by programming the unit using an IBM PC or compatible computer. The programmed personality is stored in nonvolatile memory within the radio.

• Simple Remote Control Capability - External

accessories can be connected to the UDC such as a headset, a speaker-mic or a lanyard. Connection of the speaker-mic allows the operator to remotely control PTT operation and audio level of the external speaker. An antenna jack is located on the UDC for the connection of a remote mounted antenna such as when the radio is used in a vehicula r ch arger.

• Meets MI L-810C and D Specifications - The sturdy

die-cast aluminum case is designed to seal out moisture, blowing rain and other harsh environmental factors.

• Ba ttery Packs - Several different battery pack sizes

and capacities are available.

• Available Options - These options include the

antennas, audio accessories, batteries, carrying accessories, chargers, lanyards, and the vehicular chargers.

DESCRIPTION

Two major asse mblies form an M-PA radio. The Front Cover Assembly contains all of the microproce ssor circ uitry, audio circuitry and the operating controls. The Rear Cover Assembly houses the RF circuitry which includes the transmitter, receiver and the frequency synthesizer. The assemblies are electrically interconnected by two single-in-line type connectors. When mated together, the assemblies form a weather resistant diecast aluminum case that protects the radio’s circuitry from harsh outside environments.

Power is provided by a battery pack that slides and locks on to the bottom of the radio. The radio’s on/off switch is located on the battery pack.

The antenna screws on to the top of the unit A side antenna connection is also provided at the UDC for an ex ter nal antenna or for test purposes. This UDC antenna connection is also utilized for external antenna operation when the radio is locked in the vehicular charger.

+ 12 hidden pages