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M-949-11 参数 Datasheet PDF下载

M-949-11图片预览
型号: M-949-11
PDF下载: 下载PDF文件 查看货源
内容描述: 行检测继电器 [Line Sense Relay]
分类和应用: 继电器
文件页数/大小: 3 页 / 89 K
品牌: CLARE [ CLARE, INC. ]
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M-949-11
Line Sense Relay
Features
Meets UL and British Standard specifications
Designed for use with FCC Part 68 certified
equipment
Temperature ranges from -25º to 70ºC
Senses telephone line current from 15 to 200 mA
Includes a 1-Form-A relay contact
Achieves excellent longitudinal balance
Meets high-voltage isolation requirements up to
4,000 volts
Filters common-mode noise through dual coils
Applications
Telephone Exchange Products
PBX and Key Systems
Station Message Detail Reporting (SMDR)
Systems
Figure 1. Electrical Configuration
Description
The M-949-11 Line Sense Relay is a small, PCB-
mounted loop current detector with the safety and
reliability features required for UL and British Standard
(BSI) regulated telephone applications.
The M-949-11 is designed for both North American
and international use, and offers superior protection
against voltage surges such as lightning strikes.
When connected to the voice pair (tip and ring) of an
ordinary telephone line, the M-949-11 provides a
1-Form-A relay closure in response to current flowing
through the wires. This closure can be used with
control circuitry for on-hook/off-hook monitoring, switch
hook flash detection, and rotary dial pulse counting.
The M-949-11 is ideally suited for use with the Teltone
M-959 Dial Pulse Counter and other loop-current
applications, including microprocessor-based designs.
Ordering Information
Part #
M-949-11
Description
Loop Current Sensing Relay
Figure 2. Typical Application: Dialed Digit Monitor
DS-M-949-11-R02
www.clare.com
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