Kenwood TK-3000, TK-3000 C6, TK-3000 M6 Service Manual

UHF FM TRANSCEIVER / UHF
TK-3000
调频手持对讲机
SERVICE MANUAL / C6 version / C6
Knob(Selector)
旋钮(选择器)
(K29-9488-03)
Helical antenna
天线
(T90-1098-05)
版本
Knob (Volume)
旋钮(音量)
(K29-9487-03)
维修手册
© 2011-5 PRINTED IN JAPAN B51-8978-00 (Y)
Knob (PTT)
按钮 (PTT)
(K29-9489-13)
Button knob (Side)
钮扣按钮(侧面)
(K29-9490-13)
Plastic cabinet assy
机壳
(A02-4135-03)
This product complies with the RoHS directive for the European market.
无铅焊接通信产品 保护环境建伍领先
注意∶ 在维修时请使用无铅焊锡 和相应的焊接工具 详细事项请访问如下网址了解 :
本产品是无铅化焊接产品
http://www.kenwoodhk.com.hk/
This product uses Lead Free solder.
TK-3000
CONTENTS /
GENERAL ....................................................3
SYSTEM SET-UP .........................................4
REALIGNMENT ...........................................5
DISASSEMBLY FOR REPAIR .....................9
CIRCUIT DESCRIPTION ...........................11
SEMICONDUCTOR DATA .........................16
COMPONENTS DESCRIPTION ................17
PARTS LIST ...............................................19
EXPLODED VIEW ......................................24
ADJUSTMENT ...........................................25
PC BOARD
TX-RX UNIT (X57-8100-23) ....................32
LEVEL DIAGRAM ......................................36
SCHEMATIC DIAGRAM ............................37
目录
概 述..................................3
系统体系...............................4
模式组合...............................5
维修拆卸.............................. 9
电路说明..............................11
半导体数据............................16
元件说明..............................17
零 件 表..............................19
部件分解图............................24
调 整.................................26
印刷电路板
收发单元 (X57-8100-23) ..............32
电 平 图..............................36
原 理 图..............................37
BLOCK DIAGRAM .....................................39
SPECIFICATIONS ..................BACK COVER
Document Copyrights
Copyright 2011 by Kenwood Corporation. All rights re-
served.
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 for damages resulting from the use of the information contained herein. Kenwood reserves the right to make changes to any products herein at any time for improvement purposes.
方 块 图..............................39
规 格...............................封底
文档版权信息
Kenwood Corporation 拥有版权 2011。保留所有权利。
未经 Kenwood 公司预先书面同意,无论出于何种目的,均 不得以任何形式或任何方式包括电子、机械、影印、录音或 其他方式复制、翻译、分发或传播本手册的任何部分。
免责声明
Kenwood 公司在准备本文档时已采取所有必要的预防措施, 恕不对错误或疏漏承担任何责任,也不对因使用本文中所含 的信息而导致的损害负责。Kenwood 公司保留出于改进的需要 而随时对文中的产品信息做出更改的权利。
2
TK-3000
GENERAL /
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni­cians familiar with similar types of commercial grade com­munications equipment. It contains all required service information for the equipment and is current as of the pub­lication date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions. These are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment informa­tion, the full part identifi cation number should be included. This applies to all parts : components, kits, or chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a suffi cient descr iption of the re­quired component for proper identifi cation.
PERSONAL SAFETY
The following precautions are recommended for personal safety:
• DO NOT transmit until all RF connectors are verifi ed se-
cure and any open connectors are properly terminated.
• SHUT OFF and DO NOT operate this equipment near
electrical blasting caps or in an explosive atmosphere.
• This equipment should be serviced by a qualifi ed techni-
cian only.
概述
引言
本手册的范围
本手册是提供给熟悉通信专业并且具有维修经验的技术人 员使用的。它包括了维修该设备所需要的全部资料和现行出 版日期。在出版后可能发生变动,如果需要,可以参照《维 修通报》或《手册修订本》进行补充。
替换零件的订购
当订购替换零件或设备资料时,应注意完整的零件识别号 码。所有的零件均有识别号码∶元件,组件或机壳。如果不 知道零件的号码,为了正确地识别,必须注明此元件所属的 机壳或组件的号码,并对元件进行充分的说明。
个人安全
为了个人的安全,请注意下列事项∶
在没有认真核实所有射频插头之前或有任何一个脱开的插
头没有连接到相应端口上的情况下均不要发射。
在电爆管附近或在易燃性气体环境中,必须关闭电源,不
要操作本设备。
本设备只应该由有资格的技术人员进行维修。
SERVICE
This transceiver is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and alignment procedures contained within.
Model Type TX-RX unit
TK-3000 C6
X57-8100-23
Frequency
range
350~390MHz
Remarks
IF1: 38.85MHz LOC: 38.4MHz
维修服务
为了便于维修本设备,建立了完整的维修服务体系,提供
了包括原理图,印刷电路板图和调整步骤在内的资料供参考。
型 号 类 型 收发单元 频率范围 备 注
TK-3000 C6 X57-8100-23 350 ~ 390MHz
IF1: 38.85MHz
LOC: 38.4MHz
3
TK-3000
SYSTEM SET-UP /
Merchandise received
接收订单
Choose the type of transceiver
选择手持对讲机的类型
Transceiver programming
手持对讲机编程
Are you using the speaker microphone?
您使用扬声器麦克风吗 ?
NO /
Delivery
交货

系统体系

Frequency range (MHz) RF power Type
频率范围 (MHz) 射频功率 类 型
TX/RX 350~390
A personal computer, programming interface (KPG-22A/22U), and FPU (programming software) are required for programming. (The frequency, TX power HI/LOW, and signaling data are programmed for the transceiver.)
编程时需要个人计算机,编程接口 (KPG-22A/22U) 和 FPU( 编程软件 )。
( 为手持对讲机设定频率,常规系统特性,TX 高 /低功率,以及信令数据。)
YES /
KMC-21 or KMC-45 Speaker microphone
KMC-21, 或 KMC-45 扬声器麦克风
4.0W
TK-3000 C6
(Option)
( 可选件 )
1. Modes
User mode
PC mode
Clone mode
Mode Function
User mode For normal use.
PC mode
Data programming mode
PC test mode
Clone mode
Used for communication between the trans­ceiver and PC.
Used to read and write frequency data and other features to and from the transceiver.
Used to check the transceiver using the PC. This feature is included in the FPU.
Used to transfer programming data from one transceiver to another.
PC test mode
REALIGNMENT /
Data programming mode
PC tuning mode

模式组合

1. 模式

用户模式
User mode
数据编程模式
PC mode
PC 模式
Clone mode
复制模式
模 式 功 能
用户模式 一般使用。
PC 模式 用于手持对讲机与计算机之间的通信。
数据编程模式 用于阅读和写入频率数据以及其他功能。
PC 测试模式
复制模式
用于使用计算机检测手持对讲机。 此特性包括在 FPU 内。
用于从一个手持对讲机编程数据复制到另 一个手持对讲机。
Data programming mode
PC 测试模式 PC 调谐模式
PC test mode
PC tuning mode
4
TK-3000
REALIGNMENT /
2. How to Enter Each Mode
Mode Operation
User mode Power ON PC mode Received commands from PC Clone mode [PTT]+[Side]+Power ON (Two seconds)
3. PC Mode
3-1. Preface
The transceiver is programmed by using a personal com­puter, a programming interface (KPG-22A/22U, USB adapter (KCT-53U)) and programming software (KPG-137D: ver.1.10 or later).
The programming software can be used with a PC. Fig­ure 1 shows the setup of a PC for programming.
3-2. Connection Procedure
1. Connect the transceiver to the personal computer with
the interface cable and USB adapter (when the interface
cable is KPG-22A, the KCT-53U can be used).
模式组合

2. 如何进入每一种模式

模 式 功 能
用户模式 接通电源
PC 模式 从计算机接收指令
复制模式 [PTT]+[ 侧面 ]+ 接通电源 (2 秒钟 )

3. PC 模式

3-1. 前言
手持对讲机采用个人电脑、编程接口 (KPG-22A/22U,USB 适配器 (KCT-53U)) 和编程软件 (KPG-137D:ver.1.10 或更高 版本 ) 进行编程。
编程软件可以在 PC 上进行使用。图 1 给出了 PC 进行编程 的设置。
3-2. 连接操作
1. 使用接口电缆和 USB 适配器将手持对讲机连接到个人电脑
( 接口电缆为 KPG-22A 时,可以使用 KCT-53U)。
Note:
• You must install the KPG-22U driver in the computer to use the USB programming interface cable (KPG-22U).
• You must install the KCT-53U driver in the computer to use the USB adapter (KCT-53U).
• When using the USB adapter (KCT-53U) for the fi rst time, plug the KCT-53U into a USB port on the computer with the computer power ON.
2. When the POWER is switched on, user mode can be en­tered immediately. When the PC sends a command, the transceiver enters PC mode.
When data is read from the transceiver, the red LED
lights.
When data is written to by the transceiver, the green LED
lights.
Note:
• The data stored in the personal computer must match Model Name and Model Type when it is written into EE­PROM.
• Do not press the [PTT] key during data transmission or reception.
3-3. KPG-22A Description (PC programming interface cable: Option)
The KPG-22A is required to interface the transceiver with
the computer. It has a circuit in its D-sub connector case that converts the RS-232C logic level to the TTL level.
The KPG-22A connects the SP/MIC connector of the
transceiver to the RS-232C serial port of the computer.
注意 :
必须在电脑上安装 KPG-22U 驱动程序才能使用 USB 编程接
口电缆 (KPG-22U)。
必须在电脑上安装 KCT -53U 驱动程序才能使用 USB 适配器
(KCT-53U)。
首次使用 USB 适配器 (KCT-53U) 时,请在电脑开机的情况
下将 KCT-53U 插入电脑的 USB 端口。
2. 手持对讲机电源打开时,可以立即进入用户模式 PC 发送 指令时,手持对讲机进入 PC 模式。
手持对讲机发送数据时,红色的 LED 点亮。 手持对讲机接收数据时,绿色的 LED 点亮。
注意 :
个人电脑保存的数据写入 EEPROM 时,必须与机型和类型 相符。
请勿在数据发送或接收期间按 [PTT] 键。
3-3. KPG-22A 说明 (PC 编程接口电缆 :选购件 )
将手持对讲机与电脑相连需要 K P G -22A。该电缆的 D-sub
连接器盒具有将 RS-232C 逻辑电平转换为 TTL 电平的电路。
KPG-22A 将手持对讲机的 SP/MIC 连接器连接到电脑的 RS-
232C 串行端口。
3-4. KPG-22U Description (USB programming interface cable: Option)
The KPG-22U is a cable which connects to a USB port
on a computer.
3-4. KPG-22U 说明 (PC 编程接口电缆 :选购件 )
KPG-22U 是连接到电脑 USB 端口的电缆。
5
TK-3000
REALIGNMENT /
When using the KPG-22U, install the supplied CD-ROM (with driver software) in the computer. The KPG-22U driver runs under Windows XP, Vista or 7.
3-5. KCT-53U Description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-22A to a USB port on a computer.
When using the KCT-53U, install the supplied CD-ROM (with driver software) in the computer. The KCT-53U dr iver runs under Windows 2000, XP or Vista (32-bit).
3-6. Programming Software KPG-137D Description
The KPG-137D is the programming software for the transceiver supplied on a CD-ROM. This software runs un­der windows XP, Vista or 7 on a PC. The software on this disk allows a user to program the transceiver via Program­ming interface cable (KPG-22A/22U).
Note:
• Use the FPU that matches the market when you fi rst set
the market code and model name/frequency data to the
service unit. The unit set by mistake cannot be restored.
• Receive frequencies listed below may result in the in-
terference of reception due to the harmonics of internal
oscillators. Enter a frequency not listed in the table.
模式组合
使用 KPG-22U 时,请在电脑上安装附带的 CD-ROM( 带有驱 动程序 )。KGP-22U 驱动程序可以在 Windows XP、Vista 或 7 下运行。
3-5. KCT-53U 说明 (USB 适配器 :选购件 )
KCT-53U 是将 KPG-22A 连接到电脑 USB 端口的电缆。
使用 KCT-53U 时,请在电脑上安装附带的 CD-ROM( 带有驱 动程序 )。KCT-53U 驱动程序在 Windows2000,XP 或 Vista(32 位 ) 下运行。
3-6. 编程软件 KPG-137D 说明
KPG -137D 是 CD-ROM 附带的用于手持对讲机的编程软件。 该软件在 PC 的 WindowsXP、Vista 或 7 下运行。该光盘上的 软件允许用户通过编程接口电缆 (KPG-22A/22U ) 对手持对讲 机进行编程。
注意 :
初次设置服务单元的市场代码和机型 / 频率数据时,请使
用与市场相符的 FPU。若单元设置有误,将无法予以恢复。
下面列出的接收频率由于内部振荡器的谐波可能对信号接 收造成干扰。输入在表格中没有列出的频率。
No. FREQUENCY (MHz)
1 364.79375 2 364.79500 3 364.80000 4 364.80500 5 364.80625 6 383.99375 7 383.99500 8 384.00000 9 384.00500
10 384.00625
3-7. Programming with PC
If data is transferred to the transceiver from a PC with the
FPU, the data for each set can be modifi ed.
Data can be programmed into the EEPROM in RS-232C
format via the SP/MIC jack.
In this mode the PTT line operate as TXD and RXD data
lines respectively.
编号 频率 (MHz)
1 364.79375
2 364.79500
3 364.80000
4 364.80500
5 364.80625
6 383.99375
7 383.99500
8 384.00000
9 384.00500
10 384.00625
3-7. 使用 PC 编程
如果使用 FP U 将数据从 P C 传输到手持对讲机,则每套手 持对讲机的数据均可修改。
通过 SP/MIC 插孔可以将数据以 RS-232C 格式写入 EEPROM。
在该模式下,PTT 线路分别用作 TXD 和 RXD 数据线路。
6
TK-3000
KPG-137D (ver. 1.10 or later)
(ver.1.10 或更高版本 )
REALIGNMENT /
PC
Tuning cable / (E30-3216-05)
Gray Gray/Black
1.5D-XV Lead wire
1.5D-XV Shield wire
调谐电缆
KPG-22A or KPG-22U or KPG-22A+KCT-53U
KPG-22A 或 KPG-22U 或 KPG-22A+KCT-53U
Illustration is KPG-22A.
插图为 KPG-22A。
灰色 灰色/黑色
1.5D-XV 导线
1.5D-XV 屏蔽线
模式组合
PC
D-SUB
(9-pin / )
9针
KPG-22A
Transceiver Transceiver Transceiver
手持对讲机
+
SP
– +
MIC
PC
USB
KPG-22U
手持对讲机
PC
USB
KCT-53U
KPG-22A
手持对讲机
Fig. 1 /
4. Clone Mode
Programming data can be transferred from one trans­ceiver to another by connecting them via their SP/MIC con­nectors.
Cloning can be performed as described below (the trans­mit transceiver is the source and the receive transceiver is the target).
The following data cannot be cloned.
• T uning data
• Model name data
• ESN data
1. Turn the source transceiver and target transceiver power
OFF.
2. Turn the source transceiver power ON while pressing the
[PTT] and [Side] keys, to enter clone mode.
3. Connect the cloning cable (part No. E30-3410-05) to the
SP/MIC connectors on the source and target transceiv-
ers.
4. Turn the target transceiver power ON.
5. Press the [Side] key on the source transceiver. The data of
the source is sent to the target. While the source is send-
ing data, red LED will light. While the target is receiving
the data, green LED will light. When cloning of data is
completed, the source red LED turned off, and the target
automatically operates in the User mode.
6. Additional targets can be continuously cloned. When
the [Side] key on the source is pressed, the data of the
source is sent to the target again. Repeat steps 3 to 5 to
clone additional transceivers.
图1

4. 复制模式

用 SP/MIC 连接器连接手持对讲机,可以将编程数据从一
台手持对讲机传输到另一台手持对讲机。
如下所述可进行复制(发射手持对讲机为主机,接收手持
对讲机为子机)。
以下数据不能复制。
·调谐数据
·机型数据
·ESN 数据
1. 关闭主机和子机的电源。
2. 按 [PTT]和[侧面]键的同时打开主机的电源,使其进入 复制模式。
3. 将复制电缆(零件号 E30-3410-05)连接到主、子机的 SP/MIC 连接器上。
4. 打开子机的电源。
5. 按主机上的 [ 侧面 ] 键。
主机的数据便被发送到子机。主机发送数据时,红色 L ED
将呈。子机接收数据时,绿色 L ED 呈。数据复制完成后, 主机的红色 LED 熄灭,子机自动以用户模式运行。
6. 可以继续复制其他子机。按主机上的 [ 侧面 ] 键,主机的 数据再次被发送到子机。重复步骤3~5复制其他手持对 讲机。
7
TK-3000
REALIGNMENT
Note:
• The Model name and Market codes must be the same in order to clone the transceiver.
• If the transceivers clone mode is confi gured as “Disabled”, the transceiver cannot enter clone mode.
• If the Read authorization password is set to the trans­ceiver, the transceiver cannot enter to the clone mode.
• Cannot be cloned if the password (overwrite password) is programmed to the target.
注意 :
机型和市场代码必须相同才能复制手持对讲机。
如果手持对讲机复制模式被设置为“无效”,则手持对讲
机不能进入复制模式。
如果手持对讲机设置了读取授权密码,则手持对讲机无法
进入复制模式。
如果子机编程设有密码 ( 改写密码),则无法复制。
Cloning cable
复制电缆
(E30-3410-05)
Fig. 2 /
图2
8
TK-3000
DISASSEMBLY FOR REPAIR /
1. Separating the Case Assembly from the Chassis
1. Remove the two knobs (a).
2. Remove the two screws (b).
3. Expand the right and left sides of the bottom of the case
assembly, Iift the chassis, and remove it from the case assembly (c).
4. Taking care not to cut the speaker lead (d), open the
chassis and case assembly.
Note:
Solder the speaker wire back in its original position if you
have removed it.
b
b
c

维修拆卸

1. 从机架上分离外壳

1. 取下两旋扭 (a)。
2. 取下两颗螺钉 (b)。
3. 掀开外壳底部的左右两侧,取下机架,并外壳中取出 (c)。
4. 小心不要折断扬声器引线 (d)。拆下机架和外壳。
注意 :
如果取下了扬声器的导线,请将其焊接到原位上。
a
a
褐色
BRN /
+
d
GRN /
绿色
9
TK-3000
DISASSEMBLY FOR REPAIR /
2. Removing the TX-RX unit from the Chassis
1. Remove the packing (e).
2. Remove the 13 screws (f).
3. Remove the packing (g) and two hexagon nuts (h).
4. Remove the solder from the antenna terminal using a sol-
dering iron then lift the unit off (i).
Note:
When reassembling the unit in the chassis, be sure to
solder the antenna terminal.
f
维修拆卸

2. 拆卸收发单元

1. 取下橡胶垫 (e)。
2. 取下 13 颗螺钉 (f)。
3. 取下橡胶垫 (g) 和两个六角形螺母 (h)。
4. 用电烙铁烫开天线端点处的焊锡 , 并拆卸主板 (i)。
注意 :
当重新将主板安装到机架上时,确保将天线端点处焊接
好。
i
Antenna terminal
天线端点
g
h
3. Removing the Rear Panel
1. Raise the rear panel on the chassis (j).
h
e

3. 取下后面板

1. 从机架上提起后面板 (j)。
j
10
TK-3000
CIRCUIT DESCRIPTION /
1. Frequency Confi guration
The receiver utilizes double conversion. The first IF is
38.85MHz and the second IF is 450kHz. The fi rst Local os­cillator is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the neces-
sary frequencies.
TX/RX: 350~390MHz ANT
1st MIX MCF SP
ANT
SW
TX
AMP
RF
AMP
350~390MHz
38.85MHz
311.15~351.15MHz RF
AMP

电路说明

1. 频率构成

接收部采用二次变频超外差方式。第一中频为 38.85MHz,
第二中频为 450kHz。第一本振频率信号由锁相环电路提供。
发射部由锁相环电路直接产生所需的频率。
CF
450kHz
IF
SYSTEM
38.4MHz
X2
doubler
PLL
VCO
AF
filter
TCXO 19.2MHz
AF
AMP
MIC
MIC
AMP
Fig. 1 Frequency confi guration /
2. Receiver System
The receiver system is shown in Figure 2.
ANT
BPF
ANT
SW
BPF
2-1. Front End (RF Amplifi er) Circuit
The signal coming from the antenna passes through the transmit/receive switching diode circuit (D101, D102, D103 and D105) and a BPF (L208 and L210), and is then ampli­fi ed by the RF amplifi er (Q204).
The resulting signal passes through a BPF (L215, L218 and L219) and goes to the mixer. These BPFs are adjusted by variable capacitors (D201 D202, and D204). The input voltage to the variable capacitor is a regulated voltage out­put from the DAC (IC300)
.
Q204
RF AMP XF200
BPF
BPF 1st Local
Q203
1st MIX
MCF
Fig. 2 Receiver system /
图 1 频率构成

2. 接收部系统

接收部系统的如图 2 所示。
CF200
Q202
IF AMP
IC200
IF,MIX,DET
Q201
X2 doubler
2nd Local
图 2 接收部系统
2-1. 前端 ( 高频放大器 ) 电路
从天线接收的信号进入发送 / 接收转换开关二极管电路 (D101、D102,D103 和 D105),然后通过 BPF(L208,L210), 并且被射频放大器 (Q204) 放大。
此信号通过 BPF(L215,L218 和 L219) 然后进入混频。这 些 BPF 被可变电容器 (D201,D202 和 D204) 调整。输入可变 电容器的电压被经 DAC(IC300) 的电压输出调整。
IC303
AF filter
X1
TCXO
19.2MHz
VR500
IC302
AF PA
SP
11
TK-3000
CIRCUIT DESCRIPTION /
2-2. First Mixer
The signal from the front end is mixed with the fi rst local oscillator signal generated in the PLL circuit by Q203 to pro­duce a fi rst IF frequency of 38.85 MHz.
The resulting signal passes through the XF200 MCF to cut the adjacent spurious and provide the optimum charac­teristics, such as adjacent frequency selectivity.
2-3. IF Amplifi er Circuit
The fi rst IF signal is passed through a four-pole mono­lithic crystal fi lter (XF200) to remove the adjacent channel signal.
The fi ltered fi rst IF signal is amplifi ed by the fi rst IF ampli­fi er (Q202) and then applied to the lF system IC (IC200).
The IF system IC provides a second mixer, second local oscillator, limiting amplifier, quadrature detector and RSSI (Received Signal Strength Indicator).The second mixer mixes the fi rst IF signal with the 38.4MHz of the second lo­cal oscillator output (TCXO X1) and produces the second IF signal of 450kHz.
The second IF signal is passed through the ceramic fi lter (CF200) to remove the adjacent channel signal. The fi ltered second IF signal is amplified by the limiting amplifier and demodulated by the quadrature detector with the ceramic discriminator (CD200).The demodulated signal is routed to the audio circuit.
电路说明
2-2. 第一混频器
前端的信号与 PLL 电路产生的第一本振信号在 Q203 混频,
生成 38.85MHz 频率的第一中频信号。
生成的信号通过 XF200 MCF。
2-3. 中频放大电路
第一中频信号通过晶体滤波器 (X F200) 消除相邻信道的信 号。经滤波的第一中频信号被第一中频放大器 (Q202) 放大并 进入中频系统芯片 (IC200)。
中频系统芯片提供第二混频器、第二本振信号、限幅放大 器、正交检测器和 RSSI( 接收信号强度指示器 )。第二混频器 将第一中频信号与 38.4MH z 的第二本振信号输出 (TCXO X1) 进行混频,并生成 450kHz 的第二中频信号。
第二中频信号通过陶瓷滤波器 (C F200) 继续消除相邻信道 的信号。经滤波的第二中频信号被限幅放大器放大并被带有 陶瓷鉴频器 (CD200) 的正交检测器解调。经解调的信号进入 音频电路。
2-4. Audio Amplifi er Circuit
The demodulated signal from IC200 is amplified by
IC305, IC303 and goes to AF amplifi er through IC302.
The signal then goes through an volume control (VR500), and is routed to an audio power amplifi er (IC302) where it is amplifi ed and output to the speaker.
To output sounds from the speaker, IC400 sends a high signal to the SPMUT line and turns IC400 on through Q300, Q301, Q302 and Q306.
3. T ransmitter System
3-1. Microphone Amplifi er Circuit
The signal from microphone amplifi ed by IC301 and goes through mute switch (IC300).
IC304 is composed of high-pass fi lter, low-pass fi lter and pre-emphasis/IDC circuit.
The output signal from the DAC IC (IC300) goes to the VCO modulation input.
MIC
IC301
BUFF
MIC AMP
IC304
IC300
DAC
LSDO
2-4. 音频放大器电路
来 自 于 IC200 的解调信号被IC305 放 大,并通过
IC302,IC303 送到 AF 放大器。
信号通过 AF 音量控制 (VR500),在音频功率放大器 (IC302)
进行放大后输出到扬声器。
由扬声器输出声音时,IC400 发送高电平信号给 SPMUT,
通过 Q300、Q301、Q302 和 Q306 打开 IC400。

3. 发射机系统

3-1. 麦克风放大器电路
麦克风的信号被 IC301 放大,然后通过静音开关 (IC300)。 IC304 由高通滤波器、低通滤波器和预加重 /IDC 电路组成。 DAC IC(IC300) 的输出信号送入 VCO 调制输入。
VCO
X1
LSDO
TCXO
12
Fig. 3 Microphone amplifi er circuit / 图 3 麦克风放大器电路
TK-3000
CIRCUIT DESCRIPTION /
3-2. Drive and Final Amplifi er Circuit
The signal from the T/R switch (D100 is on) is amplifi ed
by the pre-drive amplifi er (Q100) to 30mW.
The output of the pre-drive amplifi er is amplifi ed by the
drive amplifi er (Q101) and the RF fi nal amplifi er (Q102) to
4.0W (1W when the power is low). The drive amplifi er and the RF fi nal amplifi er consist of
two MOS FET stages.
The output of the RF final amplifier is then passed
through the harmonic fi lter (LPF) and antenna switch (D101 and D102) and is applied to the antenna terminal.
Q101
DRIVE
AMP
VDD
From
T/R SW
(D100)
+B
Q100
Pre-DRIVE
AMP
R121 R122
R123
电路说明
3-2. 驱动器和末级放大器电路
来自于 T/R 开关 (D100 ON) 的信号被预驱动放大器 (Q100)
放大到 30mW。
预驱动放大器的输出被驱动放大器 (Q101) 和射频末级放
大器 (Q102) 放大到 4.0W( 当低功率时为 1W)。
驱动放大器和 RF 末级放大器由 2 个 MOS FET 构成。 射频末级放大器的输出通过谐波滤波器 (LPF) 和天线开关
(D101 和 D102) 并且送到天线终端。
ANT
VG
POWC
D101,102
ANT
SW
LPF
Q102
RF FINAL
AMP
CURDET
Fig. 4 Drive and fi nal amplifi er circuit /
4. Frequency Synthesizer Circuit
4-1. Frequency Synthesizer
The frequency synthesizer consists of the TCXO (X1),
VCO, PLL IC (IC1) and buffer amplifi ers.
The TCXO generates 19.2MHz. The frequency stability is
2.5 ppm within the temperature range of –30 to +60°C. The frequency tuning and modulation of the TCXO are
done to apply a voltage to pin 1 of the TCXO. The output of the TCXO is applied to pin 1 of the PLL IC.
The VCO consists of 1VCO and covers a dual range of
the 350.00~390.00MHz and the 311.15~351.15MHz. The VCO generates 311.15~351.15MHz for providing to the fi rst local signal in receive.
The PLL IC consists of a prescaler, reference divider,
phase comparator, charge pump (The frequency step of the PLL circuit is 5 or 6.25 kHz).
PLL data is output from DATA (pin 19), CLOCK (pin 18)
and PLDL (pin 20) of the MCU (IC400). The data are input to the PLL IC when the channel is changed or when transmis­sion is changed to reception and vice versa. A PLL lock con­dition is always monitored by the pin 22 (PLUL) of the MCU. When the PLL is unlocked, the PLUL goes low.
图 4 驱动及末级放大器电路

4. 频率合成器电路

4-1. 频率合成器
频率合成器由 TCXO(X1)、VCO、PLL IC(IC1) 和缓冲放大
器组成。
TCXO 产生 19.2MHz的频率。在温度为 -30~ +60℃的范围内,
频率的稳定性为 2.5ppm。
进行频率调谐和 TCXO 调制,以便给 TCXO 的针脚 1提供电压。
TCXO 的输出加在 PLL IC 的针脚 1 上。
VCO由 1VCO 组成,并且覆盖了 350.00 ~ 390.00MH z 和
311.15 ~ 351.15M H z 双 波 段。V CO 产 生 311.15 ~ 351.15M H 的频率,以提供接收的第一个本振信号。
PLL IC 由预计数器、基准除法器、相位比较器、电荷泵组
成 (PLL 电路的频率步长为 5kHz 或 6.25kHz)。
PLL 数据从 MCU(IC400) 的 DATA( 针脚 19),CLOCK(针脚
18) 和 PLDL( 针脚 20) 输出。当信道改变时,或当由发射变为 接收或由接收变为发射时,数据输入 P L L IC。PL L 的锁定条 件总是由 MCU 的针脚 22(PLUL) 监控。当 PLL 失锁时,PLUL 为 低电位。
13
TK-3000
CIRCUIT DESCRIPTION /
Q5
T/RSHF
(TX: Low)
IC400
VCO
PLUL
MCU
Fig. 5 PLL block diagram / 图 5 PLL 方块图
5. Control Circuit
The control consists of the MCU (IC400) and its peripher­al circuits. It controls the TX-RX unit. IC400 mainly performs the following;
1) Switching between transmission and reception by PTT
signal input.
2) Reading channel information, frequency, and program
data from the memory circuit.
3) Sending frequency program data to the PLL.
4) Controlling squelch on/off via the DC voltage from the
squelch circuit.
5) Controlling the audio mute circuit via the decode data in-
put.
6) Transmitting tone and encode data.
BUFF
CV
Q1
INV
DATA, CLOCK,PLDL
电路说明
D200
SWLPF
X1
TCXO
D100
SW
LSDO
To RF AMP
To mixer
Q6 RF
AMP
IC1
8
5
1
PLL
14

5. 控制电路

控制电路是由微处理器 (I C400) 和外部电路构成。它控制
收发单元。IC400 的主要功能如下 :
1) 根据 PTT 的输入信号来转换发射和接收状态。
2) 从存储电路读出信道信息、频率以及编程数据。
3) 发送频率数据给 PLL。
4) 根据静噪电路输出的 DC 电压来控制静噪的开启和关闭。
5) 根据解码数据控制音频静音。
6) 发射 Tone 及编码数据。
注意 : EEPROM 保存调谐数据 ( 频偏、静噪等 )。 更换 EEPROM 后,请重新校正手持对讲机。
Note:
The EEPROM stores tuning data (Deviation, Squelch,
etc.).
Realign the transceiver after replacing the EEPROM.
6. Signaling Circuit
6-1. Encode
Low-speed data (QT, DQT)
Low-speed data is output from pin 49 (LSDO) of the MCU (IC400). The signal passes through a low-pass CR fi lter. The signal is mixed with the audio signal and goes to the VCO and TCXO (X1) modulation input after signal processing in the DAC IC (IC300).
High-speed data (DTMF)
High-speed data (HSD) is output from pin 50 (HSDO) of the MCU.
The signal passes through a low-pass CR fi lter. TX devia­tion making an adjustment by MCU is applied to the DAC IC (IC300). The signal is mixed with the audio signal and goes to the VCO and TCXO.
14

6. 信令电路

6-1. 编码
■ 低速数据 (QT, DQT)
低速数据从微处理器 (IC400) 的针脚 49(LSDO) 输出。信 号通过低通 CR 滤波器。此信号与音频信号混合,在 DAC IC(IC300) 中进行信号处理之后,进入 VCO 和 TCXO(X1) 调制 输入。
■ 高速数据 (DTMF)
高速数据 (HSD) 从微处理器的针脚 50(HSDO) 输出。
信号通过低通 CR 滤波器。由微处理器进行调整的 T X 频偏 被施加到 DAC IC(IC300)。此信号与音频信号混合,然后送入 VCO 和 TCXO。
TK-3000
CIRCUIT DESCRIPTION /
IC400
MCU
49
LSDO
50
HSDO
Fig. 6 Encode / 图 6 编码
6-2. Decode
QT/DQT
The output signal from IF IC (IC200) enters the MCU (IC400) through IC300. IC400 determines whether the QT or DQT matches the preset value, and controls the SPMUT and the speaker output sounds according to the squelch re­sults.
电路说明
IC300
DAC
12
24
19
20
FADJ
MOD
TCXO
VCO
AF
AMP
21
18
BEEP
6-2. 解码
■ QT/DQT
IF IC(IC200) 的输出信号通过 IC300 送入微处理器 (IC400)。I C400 确 认 Q T 或 DQT 是否与预设值匹配,控制 SPMUT,然后扬声器根据静噪结果输出声音。
7. Power Supply
There are fi ve 5V power supplies for the MCU: 5M is always output while the power is on. 5C is a common 5V and is output when SAVE is not set
to ON.
5R is 5V for reception and output during reception. 5T is 5V for transmission and output during transmission. 5MS is 5V for the SP/MIC connector and the DAC IC
(IC300).

7. 电源

微处理器有5个5V电源。
电源打开时,5M 总是输出。
5C 是普通的 5V 电源,它在 SAVE 没有设为 ON 时输出。
5R 是接收用 5V 电源,它在接收期间输出。
5T 是为发射用的 5V 电源,它在发射期间保持输出。
5MS 是 SP/MIC 和 DAC IC(IC300) 的 5V 电源。
15
TK-3000
SEMICONDUCTOR DATA /
MCU: F2136ACNKDRB (TX-RX unit IC400)
Pin No. Signal Name I/O Function
1NC ONC 2 VREF - Reference voltage input 3 MODE I Mode select for MCU
4, 5 NC O NC
6 RESET I Reset signal input 7 XOUT O Oscillation circuit 8 Vss - GND
9 XIN I Oscillation circuit 10 Vcc - Power supply 11 BSFT O Beat shift for MCU clock
12~14 NC O NC
15 E2WP O Write protect for EEPROM 16 E2DAT I/O Data input/output from EEPROM 17 E2CLK O Clock for EEPROM 18 CLOCK O Clock for PLL/DAC IC 19 DATA O Data for PLL/DAC IC 20 PLDL O Load enable for PLL IC 21 PLPS O Power saving for PLL IC 22 PLUL I Lock detect signal from PLL IC 23 NC O NC 24 EN4 I Encoder input 4 25 EN3 I Encoder input 3 26 EN2 I Encoder input 2 27 EN1 I Encoder input 1 28 NC O NC 29 OPTDET I 2pin option detection 30 LEDR O LED (red) control 31 LEDG O LED (green) control 32 SPMUT O Power switch for AF amp 33 NC O NC 34 5TC O 5T control 35 5CC O 5C control (SAVE) 36 5MSC O 5MS control 37 DACLD O Load enable for DAC IC 38 PTT I PTT key input 39 PFKEY I PF key input 40 INT I INT signal input 41 VDCSW O Voltage discharge switch 42 WID/NAR O Wide/Narrow control 43 RXD I Serial data input (FPU) 44 TXD O Serial data output (FPU)
45, 46 NC O NC
47 VOXIN I VOX level input 48 CVDET I VCO voltage detection

半导体数据

微处理器 : F2136ACNKDRB ( 收发单元 IC400)

管脚号 端口名称
1NC
2 VREF - 基准电压
3 MODE
4,5 NC
6 RESET
7 XOUT
8 Vss - 接地
9 XIN
10 Vcc - 5.0V
11 BSFT
12~14 NC
15 E2WP
16 E2DAT
17 E2CLK
18 CLOCK
19 DATA
20 PLDL
21 PLPS
22 PLUL
23 NC
24 EN4
25 EN3
26 EN2
27 EN1
28 NC
29 OPTDET
30 LEDR
31 LEDG
32 SPMUT
33 NC
34 5TC
35 5CC
36 5MSC
37 DACLD
38 PTT
39 PFKEY
40 INT
41 VDCSW
42 WID/NAR
43 RXD
44 TXD
45,46 NC
47 VOXIN
48 CVDET
输入/输出
输出
输入
输出
输入
输出
输入
输出
输出
输出
输入/输出
输出
输出
输出
输出
输出
输入
输出
输入
输入
输入
输入
输出
输入
输出
输出
输出
输出
输出
输出
输出
输出
输入
输入
输入
输出
输出
输入
输出
输出
输入
输入
功 能
未连接
选择模式 (MCU)
未连接
MCU 复位
MCU 时钟输出
11.0592MHz 时钟输入
拍频偏移
未连接
EEPROM 写入控制
EEPROM 数据输入 / 输出
EEPROM 时钟
PLL/DAC 时钟
PLL/DAC 数据
PLL 启用
PLL 省电状态控制
PLL 失锁检测
未连接
编码器输入 4
编码器输入 3
编码器输入 2
编码器输入 1
未连接
耳机检测
红色 LED 控制
绿色 LED 控制
AF IC 开关
未连接
5T 控制
5C 控制
5MS 控制
DAC 启用
PTT 键输入
侧面键输入
MCU 停止
电压放电开关
宽 / 窄切换
串行数据输出 (FPU)
串行数据输入 (FPU)
未连接
VOX 水平输入
VCO 电压电平
16
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