与HDM3310 总线消防电话总机配合使用的专用光纤传输设备，可将系统通讯总线上的数字信号及语音信号进行光电转换，

以便利用光纤传输。

通过HDM3280 总线电话光端机进行光电转换后，总线通信距离可延长 20 公里( 可选配 100 公里光接口) 且不影响消防

电话的任何功能。

可在互联系统中任意通讯总线位置进行光电转换，转换过程由近端光端机将通讯总线电信号转为光信号，通过光纤传输后，

再经过远端光端机将光信号还原为电信号。系统支持通讯总线上串接光纤最多4 段；由消防电话总机所并接的近端光端机

最多为8 个。

具有光纤故障巡检功能，并可声光报警通信故障、电源故障。

具有可调通讯信号增益功能，并预留以太网接口。

1U 面板上柜式安装结构，分为M01 单端和M02 双端两种分型。HDM3280M01 内置一组光端模块，HMD3280M02 由两

组独立的光端模块集成在一个机体内，应用时 HDM3280M02 可同时向两个方向输出光信号。

Designed for HWE-BUS optical-fiber transmission, it is dedicated working with HDM3310 bus-line, which is capable

for photoelectric conversion of bus signal and voice.

After the photoelectric conversion from HDM3280, bus-line is able to prolong 20KM by using optical-fiber(40.60.80.100

optical interface optional) instead of metal cable, and not affect any other function of system.

HDM3280 transmitter can be installated at any location of bus-line. When applying photoelectric conversion, busline

signal converted from electric to optical by the proximally transmitter and also, returned beck to electric by distally

transmitter. Users need to be awared of the limitation that system supports bus-line signal passing 4 sections of optical

fiber at maximum; and merge 8 proximally transmitters at maximum.

Real-time monitoring of optical fiber, and sound-light alert for power supply fault and communication failure.

With function of voice gaining adjustment, and reserved ethernet interface.

Compact design with 1U rack room, two optional types with HDM3280-M01 or -M02; HDM3280M01 embeds one

set of optical transmitter module while HDM3280M02 integrates two separate sets of optical transmitter module into

one case. In application, HDM3280M02 can output optical signals in two directions at mean time. Users can choose

different type according to the demand.