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Kenwood Manuals
Transceiver
NEXEDGE NX-720
Service manual
Kenwood NX-720 Service Manual page 95
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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管脚
输入 /
信号
名称
号码
输出
类型
DETO
输出
4
模拟
AFO
输出
DATAI
输入
5
模拟
MI2
输入
输入 /
FNC1/TXD
数字
输出
6
TXD (RS-
输出
数字
232C)
输入 /
FNC2/RXD
数字
输出
7
RXD (RS-
输入
数字
232C)
输入 /
FNC3
数字
输出
8
RTS (RS-
输出
数字
232C)
输入 /
FNC4
数字
输出
9
CTS (RS
输入
数字
232C)
输入 /
10
FNC5
数字
输出
端子功能
说
明
输出电平
FM 检测输出
耦合电容
容许负载
输出电平
RX 音频输出
耦合电容
容许负载
输入电压范围
外部调制输入
输入阻抗
输入电压范围
外部 MIC AF 输入
容许频率
输入阻抗
VIH
VIL
可编程输入 / 输出
VOH (Io=-1.5mA)
VOL (Io=1.5mA)
电压振幅
RS-232C 串行端口 (TXD)
波特率
CL
VIH
VIL
可编程输入 / 输出
VOH (Io=-1.5mA)
VOL (Io=1.5mA)
输入电压范围
阈值低
RS-232C 串行端口 (RXD)
阈值高
波特率
VIH
VIL
可编程输入 / 输出
VOH (Io=-1.5mA)
VOL (Io=1.5mA)
RS-232C 串行端口 (RTS)
电压振幅
VIH
VIL
可编程输入 / 输出
VOH (Io=-1.5mA)
VOL (Io=1.5mA)
输入电压范围
RS-232C 串行端口 (CTS)
阈值低
阈值高
VIH
VIL
可编程输入 / 输出
VOH (Io=-1.5mA)
VOL (Io=1.5mA)
项目和条件
最小
标准
-
0.28
-
4.7
600
-
0.24
-
4.7
600
-
0.5
-
100
-
300
-
600
4.0
-0.5
4.0
-
±5
±9
1200
100
4.0
-0.5
4.0
-
-30
0.5
1.3
-
1.75
1200
4.0
-0.5
4.0
-
±5
±9
4.0
-0.5
4.0
-
-30
0.5
1.3
-
1.75
4.0
-0.5
4.0
-
NX-720
最大
单位
注 意
-
Vp-p
-
uF
-
-
-
Vp-p
-
uF
-
-
1.98
Vp-p
标准频偏
-
k
5
-
mVrms
-
3000
Hz
-
-
5.2
V
-
1.0
V
-
5.2
V
-
1.1
V
-
V
3k 负载
-
19200
bps
pF
-
5.2
V
-
1.0
V
-
5.2
V
-
1.1
V
-
30
V
-
V
2.6
V
-
19200
bps
-
5.2
V
-
1.0
V
-
5.2
V
-
1.1
V
-
V
3k 负载
-
5.2
V
-
1.0
V
-
5.2
V
-
1.1
V
-
30
V
-
V
2.6
V
-
5.2
V
-
1.0
V
-
5.2
V
-
1.1
V
95
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Table of Contents
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