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Kenwood Manuals
Transceiver
NEXEDGE NX-720
Service manual
规 格 - Kenwood NX-720 Service Manual
Vhf digital transceiver
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Also See for NX-720
:
Service manual
(90 pages)
,
Instruction manual
(24 pages)
,
Technical details
(2 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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8 针模块化连接器规格
管脚
输入 /
信号
名称
号码
输出
类型
1
MBL
输出
数字
2
SB
输出
电源
3
GND
-
接地
PTT
输入
数字
4
TXD
输出
数字
5
ME
-
接地
6
MIC
输入
模拟
7
HOOK/RXD
输入
数字
输入
数字
8
DM
输出
数字
15 针 D-sub 针连接器规格
管脚
输入 /
信号
名称
号码
输出
类型
1
SB
-
电源
2
IGN
输入
数字
3
SP2/PA
输出
模拟
端子功能
说
明
VOH
CMOS 输出
VOL
输出电压
开关 B 输出
输出电流
接地
容许电流值
VIH
CMOS 输入
( 上拉 : 5.0V/10k)
VIL
VOH
CMOS 3 态缓冲器输出
VOL
( 上拉 : 5.0V/10k)
波特率
MIC 接地
MIC 接地
输出振幅 (1kHz,60% 频
偏 )
耦合电容
音频输入
输入阻抗
容许频率
VIH
DTC144EE 输入
VIL
( 上拉 : 5.0V/4.7k)
波特率
VIH
CMOS 输入 / 输出
VIL
( 上拉 : 5.0V/47k)
VOL
说
明
电压
开关 B 输出
提供电流
(KCT-60 时 )
点火感应输入
输入电压
音频输出
耦合电容
扬声器输出
RL
容许频率
项目和条件
最小
标准
4.2
-
这个参数源于电池电压。
4.2
0
4.2
-
-
这是为了麦克风的接地端口。
-
-
10
-
600
300
4.2
0
-
4.2
0
-
项目和条件
最小
标准
这个参数源于电池电压。
-
-
10.8
3
-
330
4
300
NX-720
最大
单位
注 意
5.2
V
0.8
V
200
mA
200
mA
5.0
V
0.8
V
5.2
V
0.8
V
19200
bps
5
-
mVrms
-
uF
-
3000
Hz
5.0
V
0.8
V
115200
bps
5.0
V
0.8
V
0.8
V
最大
单位
注 意
-
2
A
-
0.5
A
-
16
V
4
-
W
4Ω,10% 失真时
-
uF
-
-
-
3000
Hz
93
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