CLEAR-COM对讲系统MS-704

Clear-Com 是一家 HME 公司，自 1968 年以来一直是实时通信解决方案和服务的供应商。

CLEAR-COM对讲系统MS-704技术参数

CLEAR-COM对讲系统介绍
Encore™ is a 2-wire analog partyline system with intuitive plug-and-play design and superior “Clear-Com Sound”audio quality.

Description
The MS-704 is a 2RU four-channel main station with programmable front panel buttons, individual channel short-circuit protection, individual channel volume control, and a regulated fail-safe power supply. The MS-704 supports up to 55 beltpacks or 10 speaker stations, or 12 headset stations.

Audio Sources and Monitoring
The MS-704 accepts five separate program audio sources: four line-level balances inputs and one assignable line-level input. The assignable program input accepts a balanced signal and is designed for monitoring external audio. The four balanced program inputs can be used to create individual program feeds on the intercom channels. The MS-704 can monitor intercom activity on one or all four channels with individual volume level controls. Monitoring intercom activity is possible through a headset or the internal high-sensitivity loudspeaker.

Talk Selection
The MS-704 has mic pre-amps with limiters and speech-shaping circuits. An individual electronic momentary/latching Talk button is available for each channel. Illuminated dual-action Talk buttons light an LED dimly when latched: blue-color while in standby, amber-color when latched. The latching feature can be disabled. The channels can be accessed separately or simultaneously without tying them together. A selector switch toggles between the headset or microphone. The Talk buttons can also be controlled with a footswitch.

Announce Output 
For paging, the MS-704 provides a balanced, line-level output signal to a ¼-inch TRS connector on the rear panel. The front panel Announce button activates the output and th Announce relay. The relay circuit, on a separate ¼-inch TRS connector, is typically used to mute monitors.

Call Signaling
The MS-704 has individual Call buttons with visual call signaling for each channel on the partyline. The visual signal will flash brightly and will emit an audible signal if the remote station operator holds the Call button for more than 2 seconds. The call signaling feature can be programmed to the Talk buttons.

描述
MS-704是一个2RU四通道主站，具有可编程前面板按钮、独立通道短路保护、独立通道音量控制和稳压故障安全电源。 MS-704支持多达55个腰包或10个扬声器站，或12个耳机站。

音频源和监控
MS-704 接受五个独立的节目音频源：四个线路电平平衡输入和一个可分配的线路电平输入。可分配的程序输入接受平衡信号，专为监控外部音频而设计。四个平衡的节目输入可用于在对讲频道上创建单独的节目馈送。 MS-704 可以通过单独的音量控制监控一个或所有四个通道上的对讲活动。可以通过耳机或内部高灵敏度扬声器监控对讲活动。

谈话选择
MS-704 具有带限制器和语音整形电路的麦克风前置放大器。每个通道都有一个单独的电子瞬时/锁定通话按钮。带灯的双动通话按钮在锁定时会发出微弱的 LED 灯：待机时为蓝色，锁定时为琥珀色。可以禁用锁定功能。这些通道可以单独或同时访问，而无需将它们捆绑在一起。选择器开关在耳机或麦克风之间切换。通话按钮也可以通过脚踏开关进行控制。

宣布输出
对于寻呼，MS-704为后面板上的1/4英寸TRS连接器提供平衡的线路电平输出信号。前面板Announce按钮激活输出和Announce继电器。继电器电路位于单独的¼英寸TRS连接器上，通常用于使监视器静音。

呼叫信令
MS-704有单独的呼叫按钮，partyline上的每个通道提供可视呼叫信号。如果远程站操作员按住呼叫按钮超过2秒，视觉信号将明亮闪烁并发出声音信号。呼叫信号功能可以编程到通话按钮。

CLEAR-COM对讲系统其他常用型号：
CLEAR-COM MS-702
CLEAR-COM MS-704
CLEAR-COM SB-704
CLEAR-COM CS-702

CLEAR-COM Walkie talkie NEW + ORIGINAL+ ONE YEAR WARRANTY

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CLEAR-COM对讲系统MS-704产品介绍