Kenwood NEXEDGE NXR-810 User manual

SERVICE MANUAL / 维修手册
This product uses Lead Free solder.
无铅焊接通信产品
保护环境建伍领先
注意∶本产品是无铅化焊接产品
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:
http://www.kenwoodhk.com.hk/
This product complies with the RoHS directive for the European market.
© 2010-5 PRINTED IN CHINA
B51-8924-00 (N)
C version / C 版本
NXR-810
UHF DIGITAL BASE-REPEATER / UHF 数字模拟双模中继台
CH/STATUS
VOLUME
BUSY
TX POWER
MIC
FUSE
N SYNC
DC 13.6V
REF IN RX IN
TX OUT CONTROL
I/O
TEST/SPKR
Front panel
前面板
(A62-1174-03)
Knob (Power)
旋钮（电源）
(K29-9106-04)
Key top / 按键
(K29-9370-02)
Knob (Volume)
旋钮（音量）
(K29-5389-03)
Modular jack
模块化插孔
(E58-0522-05)
Rear panel
后面板
(A82-0077-02)
Antenna cable (REF IN)
天线电缆(基准输入)
(E30-7690-05)
Antenna cable (RX IN)
天线电缆(接收输入)
(E30-3418-15)
Lead wire with connector
(ACC15P)
带有连接器的导线(ACC15P)
(E37-0913-05)
Lead wire with connector
(DSUB25P)
带有连接器的导线(DSUB25P)
(E37-1376-05)
Modular jack x 2
模块化插孔 x 2
(E58-0533-05)
DC cord (Ext DC in)
直流电源线(外部直流输入)
(E30-3414-05)
Blade fuse (15A/32V)
刀片式保险丝(15A/32V)
(F05-1537-05)
Antenna cable (TX OUT)
天线电缆(发射输出)
(E30-7528-15)

NXR-810
2
CONTENTS / 目录
Document Copyrights
Copyright 2010 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 other-
wise, 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 er-
rors or omissions. Neither is any liability assumed for dam-
ages 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.
文档版权信息
Kenwood Corporation 拥有版权 2010。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。
概 述 ........................................................................ 3
系统体系 ........................................................................ 4
模式组合 ........................................................................ 5
操作特性 ........................................................................ 9
安 装 ......................................................................10
改 装 ......................................................................13
维修拆卸 ......................................................................16
电路说明 ......................................................................17
元件说明 ......................................................................32
零 件 表 ......................................................................36
部件分解图 .................................................................52
包 装 ......................................................................54
故障排除 ......................................................................56
调 整 ......................................................................65
端子功能 ......................................................................93
PC 板
末级单元 (X45-3932-71) ............................ 108
控制单元 (X53-4490-10) ............................ 112
显示单元 (X54-3730-20) ............................ 116
TX-RX 单元 (X57-7952-71) ...................... 120
RX VCO/PLL 单元 (X58-5090-10) ........ 124
TX VCO/PLL 单元 (X58-5100-10) ........ 125
互 连 图 ................................................................... 126
原 理 图 ................................................................... 128
方 块 图 ................................................................... 146
可选附件
KES-5( 外部扬声器 ) ..................................... 149
规 格 ................................................................... 151
GENERAL.....................................................3
SYSTEM SET-UP.........................................4
REALIGNMENT ...........................................5
OPERATING FEATURES .............................8
INSTALLATION..........................................10
MODIFICATION .........................................13
DISASSEMBLY FOR REPAIR ....................16
CIRCUIT DESCRIPTION ............................17
COMPONENTS DESCRIPTION.................32
PARTS LIST ...............................................36
EXPLODED VIEW ......................................52
PACKING....................................................54
TROUBLE SHOOTING ..............................55
ADJUSTMENT ..........................................64
TERMINAL FUNCTION .............................92
PC BOARD
FINAL UNIT (X45-3932-71) .................108
CONTROL UNIT (X53-4490-10) ..........112
DISPLAY UNIT (X54-3730-20).............116
TX-RX UNIT (X57-7952-71).................120
RX VCO/PLL UNIT (X58-5090-10) ......124
TX VCO/PLL UNIT (X58-5100-10) ......125
INTERCONNECTION DIAGRAM ............126
SCHEMATIC DIAGRAM ..........................128
BLOCK DIAGRAM ...................................146
OPTIONAL ACCESSORIES
KES-5 (EXTERNAL SPEAKER) ............149
SPECIFICATIONS ....................................150

NXR-810
3
GENERAL / 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∶
• 如果有人在天线两英尺 (0.6 米 ) 范围之内时，不要进行发
射。
• 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。
• 为了操作的安全，在接通电源之前所有设备应该连接地线。
• 本设备只应该由有资格的技术人员进行维修。
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。
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni-
cians familiar with similar types of commercial grade com-
munications equipment. It contains all required service
information for the equipment and is current as of the pub-
lication 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 informa-
tion, the full part identification 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 sufficient description of the re-
quired component for proper identification.
PERSONAL SAFETY
The following precautions are recommended for personal
safety:
• DO NOT transmit if someone is within two feet (0.6 me-
ter) of the antenna.
• DO NOT transmit until all RF connectors are secure and
any open connectors are properly terminated.
• SHUT OFF this equipment when near electrical blasting
caps or while in an explosive atmosphere.
• All equipment should be properly grounded before pow-
erup for safe operation.
• This equipment should be serviced by only qualified tech-
nicians.
SERVICE
This transceiver is designed for easy servicing. Refer to
the schematic diagrams, printed circuit board views, and
alignment procedures contained within.

NXR-810
4
SYSTEM SET-UP / 系统体系
Merchandise received
Choose the type of transceiver
See page 5.
A personal computer, programming interface (KPG-46/46A), and
programming software (KPG-129D(C)) are required for programming.
DC power supply or
duplexer?
Repeater programming & setup
Installation in the optional space
YES
NO
Delivery
(Option)
Frequency range RF power Type
TX/RX 400~470MHz 40W C
External speaker? KES-5 installation
YES
NO (Option)
See page 10.
See page 11.
接收订单
选择 中继台 的类型
参见第5页。
需使用个人电脑，编程接口(KPG-46/46A)和编程软件(KPG-129D(C))进行编程。
DC电源或双工器?
中继台编程与设置
在可选空间内安装
是
否
交货
( 可选件 )
频率范围 射频功率 类型
TX/RX 400~470MHz 40W C
外部扬声器？KES-5的安装
是
否(
可选件 )
参见第10页。
参见第11页。

NXR-810
5
REALIGNMENT / 模式组合
1. Modes
User mode
PC mode
Firmware programming mode
PC programming mode
PC test mode PC tuning mode
Mode Function
User mode Use this mode for normal operation.
PC mode
Use this mode to make various settings by
means of the FPU through the RS-232C
port.
PC programming
mode
Use to read and write frequency data and
other features to and from the repeater.
PC test mode Use to check the repeater using the PC.
This feature is included in the FPU.
Firmware program-
ming mode
Use when changing the firmware program
of the flash memory.
2. How to Enter Each Mode
Mode Operation
User mode Power ON
PC mode Received commands from PC
Firmware programming mode [PF1] + Power ON (one second)
3. PC Mode
3-1. Preface
The NXR-810 is programmed by using a personal comput-
er, programming interface (KPG-46/46A) and programming
software (KPG-129D(C)).
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 NXR-810 to the computer using the interface
cable and USB adapter (When the interface cable is KPG-
46A, the KCT-53U can be used.).
Note:
• 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 first time,
plug the KCT-53U into a USB port on the computer with
the computer power ON.
1. 模式
用户模式
PC模式
固件编程模式
PC测试模式
PC编程模式
PC调谐模式
模 式 功 能
用户模式 用此模式进行一般操作。
PC 模式 用此模式通过 RS-232C 端口利用 FPU 进行各
种设置。
PC 编程模式 用于将频率数据及其它功能写入到中继台或
从中继台读取。
PC 测试模式 用于通过 PC 检查中继台。
该功能内置于 FPU 中。
固件编程模式 更改闪存的固件程序时使用。
2. 如何进入每一种模式
模 式 操 作
用户模式 接通电源
PC 模式 从 PC 接收指令
固件编程模式 [PF1]+ 接通电源 (1 秒钟 )
3. PC 模式
3-1. 前言
NXR-810 采用个人电脑、编程接口 (KPG-46/46A) 和编程软
件 (KPG-129D(C)) 进行编程。
编程软件可在 PC 上使用。图 1 说明了 PC 进行编程的设置。
3-2. 连接操作
1. 用接口电缆和 U S B 适配器将 N X R -810 连接到电脑 ( 接口电
缆为 KPG-46A 时，可以使用 KCT-53U)。
注意 ：
· 必须在电脑上安装 K C T -53U 驱动程序才能使用 U S B 适配器
(KCT-53U)。
· 首次使用 USB 适配器 (KCT-53U) 时，请在电脑电源打开的
情况下将 KCT-53U 插入电脑的 USB 端口。

NXR-810
6
REALIGNMENT / 模式组合
2. When power is applied, the user mode is entered im-
mediately. When the PC sends a command, the repeater
enters the PC mode and displays “PC” on the 7-segment
LED. When data is being transmitted to the PC from the
repeater, the TX LED flashes. The BUSY LED flashes
when data from the PC is being received by the repeater.
Note:
• The data stored in the personal computer must match the
model type, when it is written into the flash memory.
• Change the NXR-810 to PC mode, then attach the inter-
face cable.
3-3. KPG-46/KPG-46A Description
(PC programming interface cable: Option)
The KPG-46/46A is required to interface the NXR-810 to
the computer. It has a circuit in its D-sub connector (KPG-
46: 25-pin, KPG-46A: 9-pin) case that converts the RS-232C
logic level to the TTL level.
The KPG-46/46A connects the 8-pin microphone connec-
tor of the NXR-810 to the RS-232C serial port of the com-
puter.
3-4. KCT-53U Description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-46A 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 driver
runs under Windows 2000, XP or Vista (32-bit).
3-5. Programming Software KPG-129D(C) Description
The KPG-129D(C) is the programming software for the
transceiver supplied on a CD-ROM. This software runs un-
der Windows XP, Vista or 7 on a PC.
The data can be input to or read from the NXR-810 and
edited on the screen. The programmed or edited data can
be printed out. It is also possible to tune the NXR-810.
2. 接通电源时，即可进入用户模式。PC 发出指令时，中继
台进入 PC 模式并在 7 段 LE D 上显示“PC”。当数据从中继
台传送到 P C 时，T X L ED 闪烁。中继台接收 P C 的数据时，
BUSY LED 闪烁。
注意 ：
· 个人电脑储存的数据写入闪存时，必须与机型相符。
• 将 NXR-810 改为 PC 模式，然后连接接口电缆。
3-3. KPG-46/KPG-46A 说明
(PC 编程接口电缆 : 选购件 )
将 NXR-810 连接到电脑需要 KPG-46/46A。它的 D-sub 连接
器 (KPG-46:25 针 ,KPG-46A:9 针 ) 盒中有一个电路，可以将
RS-232C 逻辑电平转换为 TTL 电平。
KPG-46/46A 将 NXR-810 的 8 针麦克风连接器连接到电脑的
RS-232C 串行端口。
3-4. KCT-53U 说明 (USB 适配器 : 选购件 )
KCT-53U 是将 KPG-46A 连接到电脑 USB 端口的电缆。
使用 K C T -53U 时，请在电脑上安装附带的 CD-ROM( 含有
驱动程序软件）。KCT-53U 驱动程序在 Windows 2000、XP 或
Vista(32 位 ) 下运行。
3-5. 编程软件 KPG-129D(C) 说明
KPG-129D(C) 是 CD-ROM 附带的用于中继台的编程软件。该
软件在 PC 的 Windows XP、Vista 或 7 下运行。
可向 N X R -810 写入或读取数据，并可在屏幕上进行编辑。
可以打印编程或编辑的数据。此外，还可调谐 NXR-810。
Fig. 1 / 图1
KPG-129D(C)
PC
NXR-810
(KPG-46 or KPG-46A or KPG-46A + KCT-53U) + Tuning cable (E30-3383-05)
KPG-46
Transceiver
PC
D-SUB
(25-pin/25针)
PC
KPG-46A
D-SUB
(9-pin/9针)
PC
KPG-46A
KCT-53U
USB
(KPG-46或KPG-46A或KPG-46A + KCT-53U) + 调谐电缆(E30-3383-05)
中继台 中继台 中继台
Transceiver Transceiver

NXR-810
7
REALIGNMENT / 模式组合
4. Firmware Programming Mode
4-1. Preface
The NXR-810 uses flash memory to allow it to be easily
upgraded when new features are released in the future.
4-2. Connection Procedure
Connect the NXR-810 to the personal computer using the
interface cable (KPG-46/46A) and USB adapter (KCT-53U:
when the interface cable is KPG-46A, the KCT-53U can be
used.). (Connection is the same as in the PC Mode.)
Note:
You can only program firmware from the 8-pin micro-
phone connector on the front panel. Using the 25-pin logic
interface on the rear panel will not work.
4-3. Programming
1. Start up the firmware programming software (Fpro.exe
(ver. 4.1 or later)). The Fpro.exe exists in the KPG-129D(C)
installed folder.
2. Set the communications speed (normally, 115200 bps)
and communications port in the configuration item.
3. Set the firmware to be updated by File name item.
4. Turn the NXR-810 power ON with the [PF1] key held
down. Then, “P.G.” is displayed.
5. Check the connection between the NXR-810 and the per-
sonal computer, and make sure that the NXR-810 is in the
Program mode.
6. Press “write” button in the window. When the NXR-810
starts to receive data.
7. If writing ends successfully, the TX LED on the NXR-810
lights.
8. If you want to continue programming other NXR-810s,
repeat steps 4 to 7.
Note:
This mode cannot be entered if the Firmware Program-
ming mode is set to Disable in the Programming soft-
ware.
4-4. Function
If you press the [PF6] key while “P.G.” is displayed, the
display changes to “P G” to indicate that the write speed
is low speed (38400 bps). If you press the [PF6] key again
while “P G” is displayed, the display changes to “P G.” to
indicate that the write speed is medium speed (57600 bps).
If you press the [PF6] key again while “P G.” is displayed,
the display changes to “P.G.” to indicate that the write
speed is high speed (115200 bps).
Note:
Normally, write in the high-speed mode.
4. 固件编程模式
4-1. 前言
NXR-810 使用闪存，以便于在将来发布新功能时进行升级。
4-2. 连接操作
用接口电缆 (KPG-46/46A) 和 USB 适配器 (KCT-53U: 接口电
缆为 KPG-46A 时，可以使用 KCT-53U。) 将 NXR-810 连接到个
人电脑。( 连接方式与 PC 模式下相同。)
注意 ：
您只能通过前面板的 8 针麦克风连接器对固件进行编程。
使用后面板的 25 针逻辑接口进行编程时不起作用。
4-3. 编程
1. 启动固件编程软件 (Fpro.exe(ver.4.1 或更高版本 ) )。
Fpro.exe 存在于 KPG-129D(C) 安装文件夹内。
2. 在配置项中设置通信速度 ( 通常为 115200 bps) 和通信端
口。
3. 通过文件名项设置要更新的固件。
4. 按住 [PF1] 键打开 NXR-810 的电源。此时 , 显示“P.G.”。
5. 检查 N X R-810 与个人电脑之间的连接，确认 N XR-810 处于
编程模式。
6. 按窗口中的写入按钮。NXR-810 开始接收数据。
7. 如果成功完成写入，NXR-810 上的 TX LED 亮起。
8. 若要继续为其他 NXR-810 编程，请重复步骤4到7。
注意 :
如果编程软件的固件编程模式设为禁用，则无法进入此模
式。
4-4. 功能
如果在显示“P.G.”时按 [PF6] 键，则显示变为“P G”以
表示写入速度为低速 (38400 bps)。如果在显示“P G”时再次
按 [PF6] 键，则显示变为“P G.”以表示写入速度为中速 (57600
bps)。如果在显示“P G.”时再次按 [PF6] 键，则显示变为“P.G.”
以表示写入速度为高速 (115200 bps)。
注意 ：
通常以高速模式写入。

NXR-810
8
OPERATING FEATURES
1. Two 7-segment LED Displays
• Channel display (1~30): While operating normally in user
mode.
• When the displayed channel is contained in scan se-
quence, the right side decimal point is displayed.
• When the displayed channel is the priority channel, the
left side decimal point is displayed.
• “PC” is displayed while in PC mode.
• “PG” is displayed while in firmware programming mode.
2 decimal points displayed = 115,200 bps
1 decimal point displayed = 57,600 bps
No decimal = 38,400 bps
• “E1” is displayed when FPU data is not written.
• “E2” is displayed when the channel data is not written.
• “E3” is displayed when PLL is unlocked.
Receiver PLL unlocked = BUSY LED blinks.
Transmitter PLL unlocked = TX LED blinks.
• “E4” is displayed when PTT is attempted on a channel
number that has no TX frequency data programmed.
• “SC” is displayed while in scan mode.
• “E5” is ESN blank error.
• “E.6.” is MCU internal RAM error.
• “E6.” is DSP RAM error.
• “E6” is MCU External RAM error.

NXR-810
9
操作特性
1. 两个 7 段 LED 显示
• 信道显示 (1 ～ 30): 以用户模式正常操作时。
• 显示的信道包含在扫描序列中时，显示右侧的小数点。
• 显示的信道为优先信道时，显示左侧的小数点。
• 处于 PC 模式时，显示“PC”。
• 处于固件编程模式时，显示“PG”。
显示 2 个小数点 = 115,200bps
显示 1 个小数点 = 57,600bps
无小数点 = 38,400bps
• 未写入 FPU 数据时，显示“E1”。
• 未写入信道数据时，显示“E2”。
• PLL 失锁时，显示“E3”。
接收机 PLL 失锁 = BUSY LED 闪烁。
发射机 PLL 失锁 = TX LED 闪烁。
• 在未编写 TX 频率数据的信道上尝试 PTT 时，显示“E4”。
• 处于扫描模式时，显示“SC”。
• “E5”表示 ESN 空白错误。
• “E.6.”表示 MCU 内部 RAM 错误。
• “E6.”表示 DSP RAM 错误。
• “E6”表示 MCU 外部 RAM 错误。

NXR-810
10
1. External Speaker (KES-5)
The NXR-810 has a built-in speaker (5W/8Ω), and the ex-
ternal speaker output from the TEST/SPKR connector (15-
pin) on the rear of the radio is 4W/4Ω. Use external speaker
KES-5.
1-1. Connection for the KES-5 with the NXR-810
■When taking the AF output from the TEST/SPKR
connector (15-pin) on the rear of the radio
The following tools are required for changing the connector.
• Extracting tool
The following extracting tool is recommended:
Molex Inc. Order No.: 11-03-0002 (W05-0878-00)
1. Remove the connector with jumper from the external
speaker connector on the rear panel of the radio. (Fig.1-1)
Note: Save the jumper, which is required when the radio
is used without the external speaker.
2. Remove the terminals with the jumper from the connec-
tor housing holes number 9 and 12 using the extracting
tool.
Removing the jumper lead (Fig. 1-2)
1) Insert the extracting tool (11-03-0002) into the connec-
tor while pushing the jumper lead in the direction of (a).
2) Push the extracting tool in to collapse the barbs of the
crimp terminal.
3) Pull out the lead while continuing to push the extract-
ing tool in the direction (b).
3. Reinsert the terminal with the black and white stripe lead
into hole number 12, and the terminal with the black lead
into hole number 6. (Fig. 1-3)
4. Attach the connector to the external speaker connector
on the radio.
Note:
Relationship between the TEST/SPKR connector (15-pin)
connection and speaker output:
• When pins 9 and 12 are shorted: The built-in speaker is
used.
• When pins 9 and 12 are open and output is from pins 6
and 12: KES-5 is used.
INSTALLATION / 安装
1. 外部扬声器 (KES-5)
N X R -810 有一个内置扬声器 (5W/8Ω)，从中继台后面的
TEST/SPKR 连接器 (15 针 ) 输出的外部扬声器为 4W/4Ω。可
使用外部扬声器 KES-5。
1-1. KES-5 与 NXR-810 的连接
■ 采用从中继台后面的 TEST/SPKR 连接器 (15针)输
出的 AF 时
改变连接器时，须使用以下工具。
• 拔除工具
推荐使用以下拔除工具 :
Molex Inc.，订购号 ：11-03-0002(W05-0878-00)
1. 从中继台后面板的外部扬声器连接器上拆下带跳线的连接
器。( 图 1-1)
注意 ： 请保留跳线，在没有外部扬声器的情况下使用中继
台时需使用该跳线。
2. 用拔除工具从连接器壳的第9和12孔中拆下带跳线的端子。
拆下跨接线 ( 图 1-2)
1) 沿 (a) 的方向推动拔除工具的同时，将拔除工具 (11-
03-0002) 插入连接器。
2) 推入拔除工具，折起压接式端子的倒钩。
3) 继续沿 (b) 的方向推动拔除工具的同时，拔出导线。
3. 将带黑白条纹导线的端子插入第 12 孔，将带黑导线的端子
插入第 6 孔。( 图 1-3)
4. 将连接器安装到中继台上的外部扬声器连接器。
注意 :
TEST/SPKR 连接器 (15 针 ) 连接与扬声器输出之间的关系。
• 第9和12针短路时 ：使用内置扬声器。
• 第9和12针开路并从第6和12针输出时 ：使用 KES-5。
Square-type plug / 方形插头
(E31-3228-05)
Accessory / 附件
Jumper lead
Crimp termial
Crimp termial
Barbs / 倒钩
Extracting tool
(11-03-0002)
(a)
(b)
压接式端子
压接式端子
跨接线
拔除工具
Crimp terminal / 压接式端子
(E23-0613-05)
12
15
13
1
3
6
Black/White lead / 黑白条纹导线
Black lead / 黑导线
Fig. 1-2 / 图 1-2
Fig. 1-3 / 图 1-3
Fig. 1-1 / 图 1-1

NXR-810
11
2. Accessory Cabinet
You can install optional accessories, such as a DC power
supply or duplexers, in the accessory cabinet.
1. Place the optional accessory in the cabinet as shown be-
low.
2. If necessary, attach cushions (G13-1801-04 and/or G13-
1802-04) to the top plate (J21-8559-04) in order to adjust
the space between the cabinet and the top plate. Then,
insert the 3 tabs of the plate into the slots in the side of
the cabinet. High, middle, or low positions are available.
To affix the plate, inset and tighten the 2 screws on the
other side of the plate.
You can also flip the top plate upside-down to adjust the
height of the cabinet space.
INSTALLATION / 安装
2. 附件柜
可以在附件柜中安装 DC 电源或双工器等选购附件。
1. 如下图所示，将选购附件安置在附件柜中。
2. 如有必要，可将缓冲垫 (G13-1801-04和/或G13-1802-
04) 安装到顶板 (J21-8559-04) 上，以调整附件柜和顶板
之间的空间。然后，将顶板的 3 个卡舌插入附件柜侧的插槽。
具有高、中、低三种位置。要固定顶板，请在顶板的另一
侧插入并拧紧 2 颗螺丝。
也可以翻转顶板，以调整附件柜空间的高度。
Fig. 2 / 图2
or/或
Top plate / 顶板
(J21-8559-04)
The top plate can be inverted to adjust the height of the cabinet space.
可以翻转顶板来调整附件柜空间的高度。
Cushions / 缓冲垫
(G13-1801-04 or G13-1802-04)
(G13-1801-04或G13-1802-04)
Tighten screws
拧紧螺丝
Insert the plate tabs to set the height
position (high, middle, or low).
插入顶板卡舌以设定高度(高、中或低)。

NXR-810
12
3. Key Cover
To avoid accidentally pressing the keys, you can install
the key cover.
1. Install and fix the key protector using the 5 supplied
screws (N35-3006-43).
INSTALLATION / 安装
3. 按键盖板
为避免不慎按下按键，可安装按键盖板。
1. 用附带的 5 颗螺丝 ( N35-3006-43) 安装并固定按键保护装
置。
Screws / 螺丝
(N35-3006-43) x 5
4. Desktop Repeater
When you use the repeater on a desktop, attach the 4
spacers to the base of the repeater as shown in the figure.
With these spacers attached, the front panel will not touch
the desk surface.
Fig. 3 / 图3
Fig. 4 / 图4
4. 桌面中继台
在桌面上使用中继台时，可以如图所示在中继台的底部安
装 4 个垫圈。安装这些垫圈之后，前面板就不会接触桌面。
Pegs
Firmly press these pegs (J59-0302-05)
through the spacers to affix them to
the repeater.
Peel off the backing paper to attach
these spacers (J02-0492-04).
Spacers / 垫圈
(J02-0475-05)
拴钉
用力按这些拴钉(J59-0302-05)，
使其穿过垫圈，把它们固定到中继台上。
剥下衬纸来安装这些垫圈(J02-0492-04)。

NXR-810
13
5. Installing Name Plates
Punch out the name plate card. Then insert the plates
onto the relative function keys.
You can reconfigure the name plates at any time.
INSTALLATION / 安装
MODIFICATION / 改装
1. DC Source Switch
To prevent the power supply from turning off due to
misoperation of the DC source switch on the front panel or
accidents (tampering) after installation, the main unit can be
kept on regardless of the on/off setting of the DC source
switch on the front panel.
Using solder, short the PSW land near the CN40 connec-
tor.
CN40
PSW
Control unit / 控制单元
Component side / 元件面
5. 安装按键功能表示贴片
取出按键功能表示贴片。然后将贴片插到相关的功能键上。
可随时重新装配按键功能表示贴片。
Side view of the key
Squeeze and
insert the plates.
Name plates for
the function keys
Name plates
Punch out the
name plate cards
按键侧视图
挤压并插入贴片。
功能键的表示贴片
取出贴片
贴片
Fig. 5 / 图5
1. DC 电源开关
为防止因前面板上的 D C 电源开关的误操作或安装后的意外
( 窜改 ) 而关闭电源，可以使主机不论前面板上的 DC 电源开
关的开 / 关设定如何，均保持在开启状态。
用焊料将 PSW 焊盘短接到 CN40 连接器附近。

NXR-810
14
2. Single Antenna
The NXR-810 can be used as a base station by sharing an
external antenna connector for both transmitting and receiv-
ing data.
2-1. Modification
1. Using a soldering iron, delete C76 and add C73 and C78
(100pF; C93-0572-05) on the Final unit (A/3).
2. 单天线
使发射和接收信号共用一个外部天线连接器，可以将 NXR-
810 用作基站。
2-1. 更改
1. 在末级单元 (A/3) 上，用烙铁除去 C76 并增加 C73 和 C78
(100pF;C93-0572-05)。
CN204
ANT SW GND CN2
RX
C76
C78
C73
Final unit (A/3) / 末级单元(A/3)
Component side / 元件面
2. Short-circuit the printed pattern of ANT SW near the
CN204 connector by soldering.
3. Disconnect the pin connector from CN101 of the TX-RX
unit.
Remove the two screws used for securing the BNC con-
nector on the back panel of the unit. Detach the antenna
cable assy. (E30-3418-15)
4. Cut off the coaxial cable of the removed antenna cable
assy on the BNC connector side.
Strip off the insulation of the cut-off coaxial cable to pre-
pare it to be soldered.
2. 以焊接方式将 ANT SW 的印刷图案短接到 CN204 连接器附近。
3. 从 TX-RX 单元的 CN101 断开针脚连接器。
拆下用于将 BNC 连接器固定在单元背板上的两颗螺丝。拆
下天线电缆组件。(E30-3418-15)
4. 切断已拆下的天线电缆组件的 BNC 连接器侧的同轴电缆。
剥下所切同轴电缆的绝缘材料，做好焊接准备。
Strip off the insulation so that
the cable can be soldered.
Cut off the coaxial cable at this point.
About / 约
20mm
About / 约
8~10mm
在此处切断同轴电缆。
剥下绝缘材料以便焊接。
MODIFICATION / 改装

NXR-810
15
2-2. Connection
1. Solder the prepared coaxial cable to the Final unit (A/3).
2. Connect the pin connector of the coaxial cable to CN101
of the TX-RX unit.
2-2. 连接
1. 将准备好的同轴电缆焊接到末级单元 (A/3)。
2. 将同轴电缆的针脚连接器连接到 TX-RX 单元的 CN101。
Final unit (A/3)
Component side
末级单元(A/3)
元件面
CN801
CN101
Solder the coaxial
cable.
CN204 GND
RX
焊接同轴电缆。
TX-RX unit / TX-RX单元
Component side / 元件面
Route the coaxial cable
under the lead wire extend-
ing from CN204 and CN801.
将同轴电缆布置在从CN204和
CN801伸出的导线下面。
Style the coaxial cable as illustrated in the figure.
使同轴电缆的样式如图中所示。
2-3. Setting the FPU
Set the channel to be used as “Simplex” using the FPU.
Check and readjust the transmit power if needed.
3-3. 设置 FPU
使用 FPU，将信道设置为用作“单工”。
如有必要，请检查或重新调整发射功率。
MODIFICATION / 改装

NXR-810
16
1. How to Remove the Panel Assy (ABS)
Note: You can remove the panel assembly (ABS) without
removing the top panel (A62-1148-03).
1. To remove the panel (TX-RX, w), loosen the 6 screws (
q).
2. To remove the panel assembly (Front, r), loosen the 6
screws (
e).
3. The panel assembly (ABS) is securely fastened by 4 tabs
(
t) on the top and bottom. You can remove the panel as-
sembly by pulling to the front while you are pulling up the
tabs.
:
@
:
.
.
;
=
=
=
=
DISASSEMBLY FOR REPAIR / 维修拆卸
1. 如何拆下面板组件 (ABS)
注意:您可以拆下面板组件 (ABS) 而不拆下顶板 (A62-1148-
03)。
1. 要拆下面板 (TX-RX, ② )，请松开 6 颗螺丝(①)。
2. 要拆下面板组件（前部，④ )，请松开 6 颗螺丝(③)。
3. 面板组件 (ABS) 由上下 4 个卡舌(⑤)牢牢固定。在向上
拔卡舌的同时向前拉面板组件，便可将其拆下。

NXR-810
17
CIRCUIT DESCRIPTION / 电路说明
1. Outline
The NXR-810 is a UHF repeater operating in the 400~
470MHz frequency range.
2. TX-RX unit
TX-RX unit (X57-795) consists of the following circuit.
(1) Internal/external reference circuit
(2) Transmitter reference 16.8MHz PLL circuit
(3) Transmitter main PLL circuit
(4) Modulation level adjustment circuit
(5) Front-end circuit
(6) 1st-Mixer circuit
(7) IF circuit
(8) Receiver PLL circuits
(9) AVR circuits
(10) Other circuits
2-1. Internal/External reference circuit
The internal reference circuit consists of X500, Q502,
Q504 and D505. The output of 19.2MHz VCTCXO (X500) is
fed to buffer amplifier Q502. The higher harmonic wave is
attenuated by the LPF. This reference signal is fed to IF IC
(IC304) as the 2nd Local signal through the Tripler.
The internal reference signal is amplified by Q504 to
achieve the needed level for PLL ICs. That signal is divided
by a Wilkinson divider. The divided signal is fed to the PLL
IC for the receiver. Another signal is fed to the transmitter
reference 16.8MHz PLL IC through PIN diode switch (D505)
which switches the Internal or external reference.
The external reference circuit consists of CN500, Q501,
Q503, IC500, IC501, D503 and D504. The external refer-
ence signal (10MHz/0dBm) input from CN500 is fed to buf-
fer amplifier Q501 and is amplified by Q503. Q503 is a dual
gate MOS-FET. The output of amplifier (Q503) is detected
by D503 and that DC voltage is amplified by IC500 (B/2).
The amplified DC voltage is compared to the reference volt-
age by IC500 (A/2). The difference of voltages is amplified
by IC500 (A/2) and is fed to the gate-2 terminal of Q503. The
voltage of the Q503 gate-2 terminal is controlled automati-
cally to constantly maintain the power output of amplifier
(Q503). The output of amplifier (Q503) is fed to the transmit-
ter reference 16.8MHz PLL IC through the PIN diode switch
(D504) which switches the Internal or External reference.
The PIN diode switches (D504, D505) are controlled by
the I/O expander IC (IC805 Pin15). The I/O expander IC is
controlled by the MCU which is in the Control unit (X53-449).
If internal reference is selected by FPU, the I/O expander IC
outputs an “H” status. This signal sets power switch Q506
to ON. Then D505 is activated.
If external reference is selected, the I/O expander IC out-
puts an “L” status. This signal sets power switch Q500 to
ON. Then D504 is activated.
1. 概述
NXR-810 是在 400 ～ 470MHz 频率范围内工作的 VHF 中继台。
2. TX-RX 单元
TX-RX 单元 (X57-795) 由以下电路组成。
(1) 内部 / 外部基准电路
(2) 发射机基准 16.8MHz PLL 电路
(3) 发射机主 PLL 电路
(4) 调制电平调整电路
(5) 前端电路
(6) 第 1 混频器电路
(7) IF 电路
(8) 接收机 PLL 电路
(9) AVR 电路
(10) 其他电路
2-1. 内部 / 外部基准电路
内部基准电路由 X500、Q502、Q504 和 D505 组成。19.2MHz
VCTCXO(X500) 的输出被送入缓冲放大器 Q502。较高的谐波由
LPF 衰减。该基准信号作为第 2 本地信号通过三倍频器送到
IF IC(IC304)。
内部基准信号由 Q504 放大，以获得 PLL IC 的所需电平。
该信号由 Wilkinson 分配器进行分割。分割的信号被送入接
收机的 PLL IC。另一信号通过可进行内部基准或外部基准信
号切换的 PIN 二极管开关 (D505) 送入 16.8MHz PLL IC。
外部基准电路由 CN500、Q501、Q503、IC500、IC501、D503
和 D504 组成。从 C N500 输入的外部基准信号 (10MHz/0dBm)
被送到缓冲放大器 Q501，由 Q503 放大。Q503 为双栅 MOS-
FET。放大器 (Q503) 的输出由 D503 进行检测，DC 电压由
IC500(B/2) 放大。放大的 DC 电压由 IC500(A/2) 与基准电压
进行比较。电压差由 IC500( A /2) 放大，并被送入 Q503 的栅
2 端子。Q503 栅 -2 端子的电压为自动控制，以稳定地保持放
大器 ( Q503) 的功率输出。放大器 (Q503) 的输出通过可进行
内部基准或外部基准信号切换的 PIN 二极管开关 (D504) 送入
16.8MHz PLL IC。
PIN 二极管开关 (D504, D505) 由 I/O 扩展器 IC(IC805 针
脚 15) 控制。I / O 扩展器 IC 由控制单元 ( X53-449) 内的 M CU
控制。
如果 FPU 选择了内部基准，则 I/O 扩展器 IC 输出“H”状态。
该信号开启 Q506 电源开关。然后 D505 被激活。
如果选择了外部基准，则 I/O 扩展器 IC 输出“L”状态。
该信号开启 Q500 电源开关。然后 D504 被激活。

NXR-810
18
10MHz or
19.2MHz
Detector
RX VCO
/PLL
3dB
ATT
3dB
ATT
X58-5090-10
2nd Lo
REF
AMP
Q504
AMP
Q502
AGC AMP
Q503
Buffer
Q501
SW
X3
Q202LPF
LPF
CN500
LPF
D503
AMP
IC500(B/2)
AMP
IC500(A/2)
X500
OSC
19.2MHz
D504,D505 EXT_IN
10MHz
Fig. 1 Internal/external reference circuit / 图 1 内部 / 外部基准电路
2-2. Transmitter reference 16.8MHz PLL circuit
The transmitter reference 16.8MHz PLL circuit produces
the reference frequency signal for the Transmitter Main PLL
circuit and modulates the low-frequency components.
The circuit consists of IC600, IC601, IC602, IC603, IC604,
Q601, Q602, Q603, and X600.
The VCXO (X600) signal enters the buffer amplifier Q603
and is amplified by Q602. The higher harmonic wave is at-
tenuated by the LPF and returns to IC602. Its phase is com-
pared with that of the reference frequency 5kHz.
The phase difference signal produced by the comparing
phase is converted to a DC voltage by a lag-lead type loop
filter. This DC voltage is input to the IC604 invert amplifier
and is synthesized with the modulating signal. This DC volt-
age is input to the X600 control voltage terminal for control-
ling the VCXO oscillating frequency 16.8MHz.
The 16.8MHz oscillating signal is fed to the Q603 buffer
amplifier. The output signal of the buffer amplifier is used as
the reference frequency signal of the transmitter main PLL
circuit.
TX VCO
/PLL
MOD
PLL IC
X58-5100-10
Ref
10MHz
or 19.2MHz
LDT
IC602
SPSCLK0
SPSD0
/16_8PCS AMP
Q602
Buffer
Q603
AMP
IC604
AMP
IC603
16.8MHz
LPF
Loop filter
X600
MB
OSC
16.8MHz
Fig. 2 Transmitter reference 16.8MHz PLL circuit / 图 2 发射机基准 16.8MHz PLL 电路
CIRCUIT DESCRIPTION / 电路说明
2-2. 发射机基准 16.8MHz PLL 电路
发射机基准 16.8MHz PLL 电路产生发射机主 PLL 电路的基
准频率信号，并调制低频分量。
该电路由IC600、I C601、I C602、I C603、I C604、Q601、
Q602、Q603 和 X600 组成。
VCXO(X600) 信号进入缓冲放大器 Q603，由 Q602 放大。较
高的谐波由 LP F 衰减并返回 I C602。其相位与基准频率 5k Hz
的相位进行对比。
通过相位对比产生的相位差信号由一个滞后超前式环路滤
波器转换为 DC 电压。该 DC 电压被输入 IC604 反相放大器并
与调制信号合成。该 DC 电压被输入用于控制 VCXO 振荡频率
16.8MHz. 的 X600 控制电压端子。
16.8M H z 震荡信号被送入 Q603 缓冲放大器。缓冲放大器的
输出信号用作发射机主 PLL 电路的基准频率信号。

NXR-810
19
2-3. Transmitter Main PLL circuit (SUB unit)
■VCO
The TX VCO circuit consists of two VCOs (VCO A X58-
510: Q352, VCO B X58-510: Q353). Those VCOs generates
a transmit carrier. VCO A Q352 produces a transmitter fre-
quency from 400.000MHz to 434.995MHz. VCO B Q353
produces a transmitter frequency from 435.000MHz to
470.000MHz.
Those VCO oscillation frequencies are determined by two
systems of voltage control terminals: “CV” and “TXASSIST”.
The voltage control terminals, “CV” and “TXASSIST”, are
controlled by the PLL IC (X58-510: IC300) and MCU (X53-
449: IC20) and the output frequency changes continuously
according to the applied voltage. For the modulation input
terminal, “MO”, the output frequency changes according to
the applied voltage.
Fig. 3 Transmitter VCO circuit / 图 3 发射机 VCO 电路
D355
D352
D358D359
SW Q350
TXVCOA
TX_CV
TXASSIST
TXVCOB
MO
80C
80C
VO
VCO_A
Q352
Buffer
Q354
SW Q351
D357
D353
D360D361
VCO_B
Q353
■PLL IC (X58-510: IC300)
The PLL IC compares the differences in phases of the
VCO oscillation frequency and the transmitter PLL reference
signal (16.8MHz), returns the difference to the VCO CV ter-
minal and realizes the “Phase Locked Loop” for the return
control. This allows the VCO oscillation frequency to accu-
rately match (lock) the desired frequency.
When the frequency is controlled by the PLL, the fre-
quency convergence time increases as the frequency dif-
ference increases when the set frequency is changed. To
supplement this, the MCU is used before control by the
PLL IC to bring the VCO oscillation frequency close to the
desired frequency. As a result, the VCO CV voltage does not
change and is always stable at approx. 3.0V.
CIRCUIT DESCRIPTION / 电路说明
2-3. 发射机主 PLL 电路 (SUB 单元 )
■ VCO
TX VCO 电路由两个 VCO(VCO A X58-510:Q352,VCO B X58-
510:Q353) 组成。这些 VCO 生成发射载波。VCO A Q352 产生
从 400.000MHz 到 434.995MHz 的发射机频率。VCO B Q353 产
生从 435.000MHz 到 470.000MHz 的发射机频率。
这些 VCO 振荡频率由电压控制端子的两个系统 :“CV”和
“TXASSIST”决定。
电压控制端子“CV”和“TXASSIST”由 PLL IC(X58-
510:IC300) 和 MCU(X53-449:IC20) 控制，并根据施加的电压
连续输出频率变化。对于调制输入端子“MO”，输出频率根据
施加的电压改变。
■ PLL IC(X58-510: IC300)
PLL IC 对比 VCO 振荡频率和发射机 PLL 基准信号 (16.8MHz)
的相位差，将相位差返回 VCO CV 端子，实现返回控制的“锁
相环路”。这可以使 V C O 震荡频率与所需的频率精确匹配 ( 锁
定)。
频率由 PLL 控制时，频率锁定时间将随着设定频率改变时
频率差的增大而增加。为对此进行补充，在由 PLL IC 控制之
前使用 MCU 以使 VCO 振荡频率接近所需的频率。因此，VCO
CV 的电压不变，始终稳定在约 3.0V。

NXR-810
20
The desired frequency is set for the PLL IC by the MCU
(X53-449: IC20) through the 3-line “SPSD0”, “SPSCLK0”,
“/TXPCS” serial bus. Whether the PLL IC is locked or not is
monitored by the MCU through the “LDT” signal line. If the
VCO is not the desired frequency (unlock), the “LDT” logic
is low.
Fig. 4 Transmitter Main PLL circuit / 图 4 发射机主 PLL 电路
Ref 16.8MHz
LDT
SPSCLK0
SPSD0
/TXPCS
Buffer
Q300
TX VCO/PLL
IC300
LPF
TX_CV
BPF
FIN
Loop filter
2-4. Modulation level adjustment circuit
The Modulation level adjustment circuit adjusts the mod-
ulation waveform balance. This circuit consists of IC804,
IC603, IC604, IC605 and IC606.
The modulating signal comes from the Control unit (X53-
449) through the interface connector (CN800 Pin14). The
modulating signal is produced by the modulation low-
pitched tone to the transmitter modulation 16.8MHz PLL cir-
cuit and adds the high-pitched modulation to the transmitter
main PLL.
IC804 is an electronic volume control IC. It has 8 elec-
tronic volume control circuits. The modulation level adjust-
ment circuit uses 2 electronic volume control circuits in
IC804. The 1st electronic volume control circuit adjusts the
modulating signal and is fed to IC603 and the 2nd electronic
volume control circuit. The 2nd electronic volume control
circuit adjusts the modulating signal and is fed to IC606.
IC603 is an inverting amplifier for inverting the amplifi-
cation of the modulating signal. The output of IC603 and
the charge pump output of IC602 (Transmitter modulation
16.8MHz PLL IC) are synthesized by IC604 and is fed to
VCXO (X600).
IC606 is a non-inverting amplifier. The output of the 2nd
electronic volume control circuit is amplified by IC606 and is
fed to the transmitter main PLL circuit.
Fig. 5 Modulation level adjustment circuit / 图 5 调制电平调整电路
AMP
IC604
AMP
IC606
AMP
IC603
VREF
IC605
EVOL
IC804
X58-5100-10
X600
MB
MOD
CN800
MO
OSC
16.8MHz
TX VCO
/PLL
CIRCUIT DESCRIPTION / 电路说明
PLL IC 的所需频率由 MCU(X53-449: I C20) 通过 3 线 路
“SPSD0”、“SPSCLK0”、“/TXPCS”串行总线进行设定。PLL IC
锁定与否由 MCU 通过“LDT”信号线路进行监测。如果 VCO 不
是所需的频率 ( 失锁 )，则“LDT”逻辑较低。
2-4. 调制电平调整电路
调制电平调整电路用于调整调制波形平衡。该电路由
IC804、IC603、IC604、IC605 和 IC606 组成。
调制信号通过接口连接器 (CN800 针脚 14) 来自控制单元
(X53-449)。调制信号由到发射机调制 16.8MHz PLL 电路的调
制低调音产生，并把高调调制加到发射机主 PLL。
I C804 是一个电子音量控制 IC。它有 8 个电子音量控制电
路。调制电平调整电路使用 IC804 中的 2 个电子音量控制电路。
第 1 电子音量控制电路调制调制信号，并送入 IC603 和第 2
电子音量控制电路。第 2 电子音量控制电路调整调制信号并
送入 IC606。
I C603 是一个反相放大器，用于变换调制信号的放大。
IC603 的输出和 IC602( 发射机调制 16.8MHz PLL IC) 的电荷
泵输出由 IC604 合成并送入 VCXO(X600)。
I C606 是一个非反相放大器。第 2 电子音量控制电路的输
出由 IC606 放大并送入发射机主 PLL 电路。