Ericsson MDX LBI-39014A, Maintenance Manual

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Copyright © March 1994, Ericsson GE Mobile Communications Inc.
TABLE OF CONTENTS
Page
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
RF BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
POWER AMPLIFIER BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AUDIO/LOGIC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FRONT CAP ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SYSTEM BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ACCESSORIES AND OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PC PROGRAMMER OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PC PROGRAMMED OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Carrier Control Timer (CCT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Channel Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Squelch Tail Elimination (STE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
HARDWARE AND HARDWARE OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NOISE SUPPRESSION KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
POWER CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EXTERNAL SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EXTERNAL ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
RADIO OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
USER INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PUBLIC ADDRESS OPTION OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TYPE 99 OPTION OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ASSEMBLY DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INTERCONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SPECIFICATIONS*
GENERAL
Regulatory Approval FCC DOC
403 to 440 MHz AXATR-327-A2 TR-327
440 to 470 MHz AXATR-327-B2 TR-327
470 to 512 MHz AXATR-327-C2 -------
Operating Voltage 13.8 Volts
±
20%
Battery Drain
Receiver (13.8 Vdc)
Off 0.01 Amperes (Maximum)
Squelched 0.75 Amperes (Maximum)
Unsquelched 3.5 Amperes (Maximum at 10 Watts audio, External Speaker)
Transmitter (13.8 Vdc) 13.0 Amperes (Maximum at 40 Watts RF)
Channel Spacing 25/30 kHz (12.5 or 10 kHz resolution)
Frequency Stability
±
2.5 PPM (
±
0.00025%)
Temperature Range -30°C to 60°C (-22°F to +140°F)
Dimensions (H X W X D)
(Less Accessories)
Height 5.3 cm (2.1 inches)
Width 18.2 cm (7.2 inches)
Depth 24.0 cm (9.5 inches)
Weight 3.0 kg (6.6 pounds)
Antenna Impedance 50 Ohms
TRANSMITTER
Frequency Range
Low Split Radio 403 to 440 MHz
Mid Split Radio 440 to 470 MHz
High Split Radio 470 to 512 MHz
Output Power 40 Watts (Intermittent duty cycle; EIA 20%)
Audio Sensitivity 110 mV RMS (typical)
Spurious and Harmonics Less than -16 dBm
Audio Distortion 5% (maximum)
Modulation Limiting
±
5 kHz (maximum)
FM Hum and Noise -45 dB (maximum)
Audio Frequency Response 1, -3 dB of a 6 dB/octave pre-emphasis curve from
300-3000 Hz
Continued
This manual is published by Ericsson Inc., without any warranty. Improvements and changes to this manual necessitated by typographical er-
rors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by Ericsson Inc., at any time and with-
out 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.
LBI-39014A
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