Kenwood NX-720 Service Manual page 12

Vhf digital transceiver
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NX-720
2. Horn Alert Function
The Horn alert function (max. 2A drive) is enabled by in-
stalling the KCT-60 in the transceiver.
2-1. Installation Procedure
1. Remove the ACC. cap on the rear of the transceiver.
2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
3. Insert the two crimp terminals of the Horn alert cable to
pins 13 and 14 of the square plug.
4. Connect the square plug to the 15-pin connector of the
KCT-60.
5. Connect the remaining two Horn alert cables to your car
Horn alert signal control. The internal FET switch can be
controlled by turning the HA function on/off and by using
a signaling decode output. The maximum current of HA
is 2A. This switch is the FET switch of P-channel type.
Therefore, a DC power supply is necessary to use the
HR1. The voltage range is from 5V to 16V.
Note: You must setup using the KPG-141D(C).
3. Ignition Sense Cable (KCT-18: Option)
The KCT-18 is an optional cable for enabling the ignition
function. The ignition function lets you turn the transceiver
power on and off with the car ignition key.
3-1. Installing the KCT-18 (Ignition sense cable) in
the transceiver
12
INSTALLATION / 安装
13. HR1
14. HR2
3. GND
1
13
10
7
4
14
11
8
5
2
15
12
9
6
3
KCT-18
2
Square plug
/ 汽车点火线
Ignition line of the car
2. 喇叭提示功能
在车载对讲机上安装 K C T -60,可使用喇叭提示功能 ( 最
大 2A 驱动 )。
2-1. 安装步骤
1. 拆下车载对讲机后部的 ACC. 盖。
2. 将 KCT-60 的 D-sub 连接器连接到车载对讲机的 D-sub 15
针端子。
3. 将喇叭提示电缆的两个压接式端子插入方形插头的针脚 13
和 14。
4. 将方形插头连接到 KCT-60 的 15 针连接器。
5. 将剩下的两条喇叭提示电缆连接到汽车的喇叭提示信号控
制。
内部 FET 开关可通过打开 / 关闭 HA 功能和使用信令解码
输出进行控制。H A 的最大电流为 2A。这个开关是 P 通道
类型的 FET 开关。因此,需 DC 电源方可使用 HR1。电压范
围为 5V 至 16V。
注意 : 必须使用 KPG-141D(C) 进行设置。
13
10
7
4
1
14
11
8
5
2
15
12
9
6
3
KCT-60
13
Square plug
/ 方形插头
14
/ 压接式端子
Crimp terminal
/ 喇叭提示电缆
Horn alert cable
3. 点火感应电缆 (KCT-18: 选购件)
KCT-18 为用于启用点火功能的选购电缆。点火功能让您能
够通过汽车点火钥匙打开和关闭车载对讲机的电源。
3-1. 在车载对讲机上安装 KCT-18 ( 点火感应电缆 )
KCT-60
/ 方形插头

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