Manual do usuário Kenwood FM Transceiver TK-481

Manual para o dispositivo Kenwood FM Transceiver TK-481

Dispositivo: Kenwood FM Transceiver TK-481
Categoria: Rádio por satélite
Fabricante: Kenwood
Tamanho: 2.94 MB
Data de adição: 2/14/2014
Número de páginas: 55
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Kenwood FM Transceiver TK-481 Manual de instruções - Online PDF
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Resumos

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Resumos do conteúdo
Resumo do conteúdo contido na página número 1

Document Copyrights
Copyright 2006 by Kenwood Corporation. All rights reserved.
No part of this manual may be reproduced, translated, distributed, or transmitted in any
form or by any means, electronic, mechanical, photocopying, recording, or otherwise, for
any purpose without the prior written permission of Kenwood.
Disclaimer
While every precaution has been taken in the preparation of this manual, Kenwood
assumes no responsibility for errors or omissions. Neither is any liability assumed fo

Resumo do conteúdo contido na página número 2

800MHz/900MHz FM TRANSCEIVER TK-480/481 SERVICE MANUAL © 2001-3 PRINTED IN JAPAN REVISED II ( ) B51-8408-20 N 1015 This service manual applies to products with 30100001 or subsequent serial numbers. Whip antenna (T90-0636-25) : TK-480 (T90-0640-25) : TK-481 Knob (ENC) CONTENTS (K29-5232-03) GENERAL ............................................................ 2 Knob (VOL) SYSTEM SET-UP ................................................ 2 (K29-5231-03) OPERATING FEATURES ............................

Resumo do conteúdo contido na página número 3

TK-480/481 GENERAL / SYSTEM SET-UP • SHUT OFF this equipment when near electrical blasting INTRODUCTION caps or while in an explosive atmosphere. SCOPE OF THIS MANUAL • This equipment should be serviced by only qualified tech- This manual is intended for use by experienced techni- nicians. cians familiar with similar types of commercial grade com- munications equipment. It contains all required service in- SERVICE formation for the equipment and is current as of this publica- This radio is desig

Resumo do conteúdo contido na página número 4

TK-480/481 OPERATING FEATURES Volume/Power switch 1. Operation Features Transceiver Power and Volume switch. Turn clockwise to The TK-480/481 is an 800/900MHz band EFJ LTR™-com- switch On the transceiver. Turn counterclockwise fully to patible trunked radio designed to operate in both trunked switch OFF the transceiver. Also adjusts the volume and conventional modes. The programmable features are level. When the power is switched off, all the param- summarized. eters, such as the system and gr

Resumo do conteúdo contido na página número 5

TK-480/481 OPERATING FEATURES Auto TEL Key lock Automatically connects available repeaters that are con- Pressing this key causes the transceiver to accept entry nected to telephone circuits when operating as LTR system. of only the [Function], [Key Lock], [PTT], [Lamp], [Monitor A], The time allocated to search for available repeaters is 60 [Monitor B], [Monitor C], [Monitor D], and [Emergency] keys. seconds, after which connection failure occurs, a DTMF The locked keys also include the tun

Resumo do conteúdo contido na página número 6

TK-480/481 OPERATING FEATURES System up/down Alphanumeric display When the key is pressed each time, the system number The twelve-character dot matrix alphanumeric display to be selected is incremented/decremented and repeats if shows the system and group numbers. You can program held for one second or longer. system and group names with up to ten characters in place of these numbers. The left display is used as a de- Telephone disconnect lete indicator ( ) and the right is used for the sel

Resumo do conteúdo contido na página número 7

TK-480/481 OPERATING FEATURES To unlock a system, select the system and press the key. 3-7. Group scan operation The Delete ( ) indicator disappears to indicate that the sys- Group scan can be programmed for each group. In addi- tem has returned to the scan sequence. The revert system tion to the ID codes of the selected group, the ID codes of is scanned even if it is locked out. If there a locked system, the other groups that are permitted for group scan are de- the Delete ( ) indicator flashes

Resumo do conteúdo contido na página número 8

TK-480/481 OPERATING FEATURES 4-5. Radio password If there is no system to be accessed, an intercept tone sounds, the mode is terminated, and the transceiver returns When the password is set in the transceiver, user can not to the first system. If the access is successful, the mode is use the transceiver unless enter the correct password. terminated, and the searched system becomes the new se- This code can be up to 6 digits from 0 to 9 and input with lected system (If during scanning, the scan

Resumo do conteúdo contido na página número 9

TK-480/481 OPERATING FEATURES AND/OR 5. Option Signalling AND : QT/DQT/ID + MSK to unmute. MSK matches = 5-1. DTMF alert tone Built-in DTMF decoder is available for option signalling. OR : QT/DQT/ID to unmute. MSK matches = alert tone It is possible to use individual call, group call, D.B.D. (Dead Beat Disable). D.B.D. is used with DTMF only. 6. Alphanumeric Two-way Paging Function If the option signalling matches, a predetermined action will occur. (FleetSync™) If option signalling matches

Resumo do conteúdo contido na página número 10

TK-480/481 OPERATING FEATURES Status 80~99 (Special) FleetSync™ Baud Rate Status numbers from 80 to 99 are reserved for special MSK data baud rate setting. The same rate must be set purposes. Entering these statuses from the DTMF keypad as a communication partner. can be inhibited. 1200bps : Please notice that the following status numbers are used Data communication is made in 1200bps. The communi- for special purposes; cation area is much wider than 2400bps. Recommended for repeater ope

Resumo do conteúdo contido na página número 11

TK-480/481 OPERATING FEATURES Number of Retries 7-4. DBD Off Tone Number of Retries is the maximum number of retry When a D.B.D. release code is received, transpond tone transmission when no acknowledgement is received in the sounds. Maximum ACK Wait Time. Increase this item to improve data communication reliability. 7-5. Password Agreement Tone When the correct password is entered, the tone sounds. TX Busy Wait Time The optional feature's control tone can be set to yes or no. TX Busy Wait

Resumo do conteúdo contido na página número 12

TK-480/481 OPERATING FEATURES / REALIGNMENT 7-16. Intercept Tone REALIGNMENT This tone indicates that the transceiver is out of range. It indicates that the PTT button is pressed, and transmission 1. Modes has started, but the repeater cannot be connected and talk- ing is not possible. It is output until the PTT button is re- User mode leased. (The mid tone and low tone are output alternately in 200ms intervals.) Panel test mode Panel tuning mode Data program- PC mode 7-17. Delay Tone ming mo

Resumo do conteúdo contido na página número 13

TK-480/481 REALIGNMENT IBM-PC 5. PC Mode 5-1. Preface The TK-480/481 transceiver is programmed by using a KPG-36 personal computer, programming interface (KPG-36) and programming software (KPG-49D). The programming software can be used with an IBM PC or compatible. Figure 1 shows the setup of an IBM PC for programming. 5-2. Connection procedure 1. Connect the TK-480/481 to the personal computer with the interface cable. 2. When the POWER switch on, user mode can be entered KPG-49D immediately. W

Resumo do conteúdo contido na página número 14

TK-480/481 REALIGNMENT Notes: How to enter the password with the encoder; If the encoder is rotated while “CLONE LOCK” is dis- • To start the Firmware Programmer from KPG-49D, the played, numbers (0 to 9) are displayed flashing. When Fpro path must be set up by KPG-49D Setup. you press the [S] key, the currently selected number is • This mode cannot be entered if the Firmware Program- determined. If you press the [S] key after entering the ming mode is set to Disable in the Programming soft- pas

Resumo do conteúdo contido na página número 15

TK-480/481 CIRCUIT DESCRIPTION 1. Overview 3. Receiver System This transceiver is an 800/900MHz band EFJ LTR™ 3-1. RF unit trunked system compatible FM portable transceiver that can An incoming RF signal from the antenna terminal is be programmed to operate on both LTR and conventional passed through the antenna switch (D7, D9, and D10 are systems. off) and then the bandpass filter (L11). The signal is ampli- fied by RF amplifier Q9, and passed through the bandpass filter (L20) to remove the sp

Resumo do conteúdo contido na página número 16

TK-480/481 CIRCUIT DESCRIPTION 3-3. Audio amplifier circuit 3-4. Squelch circuit The demodulated signal from IC9 is amplified by IC8 (2/ The output from IC9 enters FM IC again, then passed 2), high-pass filtered, low-pass filtered, high-pass filtered, through a band-pass filter. The noise component output band-eliminate filtered,and de-emphasized by IC12. from IC9 is amplified by Q19 and rectified by D3 to produce The signal then goes through an AF amplifier IC3 (2/2), an a DC voltage correspon

Resumo do conteúdo contido na página número 17

TK-480/481 CIRCUIT DESCRIPTION The signal from microphone passes through the limitter 4-2. Drive and Final amplifier circuit in D11, and through the high-pass filter, the ALC cir- The signal from the T/R switch (D5 is on) is amplified by cuit, the low-pass filter, the high-pass filter, and pre-empha- the pre-drive (Q11) and drive amplifier (Q12) to 50mW. sis/IDC circuit in IC12. When encoding DTMF, mute switch The output of the drive amplifier is amplified by the RF (Q7) is turned OFF for mutin

Resumo do conteúdo contido na página número 18

TK-480/481 CIRCUIT DESCRIPTION 5. Frequency Synthesizer Unit 6. Control Circuit 5-1. Frequency synthesizer The control circuit consists of microprocessor (IC15) and its peripheral circuits. It controls the TX-RX unit and trans- The frequency synthesizer consists of the VCXO (X2), fers data to and from the display unit. IC15 mainly performs VCO (IC14), PLL IC (IC11) and buffer amplifiers. the following; The VCXO generates 16.8MHz. The frequency stability is 1) Switching between transmission and

Resumo do conteúdo contido na página número 19

TK-480/481 CIRCUIT DESCRIPTION 6-2. Low battery warning 7. Signalling Circuit The battery voltage is monitored by the microprocessor 7-1. Encode (IC15). When the battery voltage falls below the voltage set • Low-speed data (QT,DQT,LTR) by the Low Battery Warning adjustment, the red LED Low-speed data is output from pin 36 of the CPU. The flashes to notify the operator that it is time to replace the signal passes through a low-pass CR filter, and goes to the battery. If the battery voltage falls

Resumo do conteúdo contido na página número 20

TK-480/481 CIRCUIT DESCRIPTION 7-2. Decode F1 +B RF power amp (IC30) • Low-speed data (QT,DQT,LTR) The demodulated signal from the IF IC (IC9) is amplified SB IC5 5M by IC8 (1/2) and passes through a low-pass filter (IC10) to ON/OFF remove audio components. The signal is input to pin 23 of VOL IC7 5C the CPU. The CPU digitizes this signal, performs processing such Q2 IC6 as DC restoration, and decodes the signal. 5T • High-speed data (DTMF) Display unit The DTMF input signal from the IF IC is a


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