Intercom System Lesson 4 PDF

Layout and install intercommunication system Intercom system  An intercom system is an electronic communication device intended for limited private dialogue, directions, collaborations or...

Layout and install intercommunication system Intercom system  An intercom system is an electronic communication device intended for limited private dialogue, directions, collaborations or announcement.  Intercom can be portable or permanently mounted in buildings. Intercom can incorporate with telephones, walkie talkies and other mechanical such as signal lights and door latches. Intercom system  Intercom system in large building usually functions as public address system. Intercom system  Intercom facilities can be available in audio only and audio video facilities. The audio and video systems allow you to see and listen who is calling at your front door, offices or gate before you allow or deny access. An intercom system can be connected to electric door, gates or electric locking devices. Common Devices used in the Intercom System 1. Speaker 2. Microphones 3. Pushbutton 4. Alarm Clock 5. Bell 6. Buzzer 7. Chimes Door & Camera Intercoms  Feel safe and secure in answering your front door or gate without physically having to open them.  For added safety, you can disable front door answering from certain room stations e.g. children’s bedrooms, preventing them from opening the door to strangers. Door & Camera Intercoms  A different door bell or chime sound may be used for different doors e.g. front, back, gate etc. to help you identify where the visitor is located. Bedroom Intercoms  Ensure your peace of mind by being able to monitor your children when they are sleeping or playing. With the ‘automate’ function, you won’t be disturbed until the noise level from the monitored room station reaches a level that deserves your attention e.g. a crying baby. When your children are playing, the hands-free reply feature means you can communicate freely with them — they can answer you when you call without having to press any buttons. Bedroom Intercoms With ‘sleep mode’, you can program your room station to play music when you’re ready for bed and automatically switch off after a certain time elapses. Master Kitchen Intercoms  By using the ‘selective room calling’ feature, people in other rooms will not be disturbed.  Using the Master Station, you are able to set the alarm clock, and choose which room stations will hear it.  The Master Station has a digitally tuned AM/ FM radio. Press one button to listen to your favorite radio station from any room within your home. Each room station retains individual control of volume. Video / Lounge Intercoms  Not only you can hear your children when they are inside —the ‘monitor / camera’ unit shows you what they are doing, whether they are inside or outside.  Wherever your cameras are placed, the signal comes back to the monitor on this station for you to view. You can also switch between camera locations and monitor doors and gates, using them in conjunction with the front door answering units to see who is at your door. Wiring Intercom  A wiring intercom is a communication system that allows to talk to each other over wires, typically within a building or between nearby locations. It consists of:  1. Master Station (Main unit)  2. Sub-stations (Secondary units)  3. Wiring (connecting the stations) Two-wire intercom  Intercom systems are widely used in TV stations and outside broadcast vehicles.  These systems were very robust and simple to design, maintain and operate but had limited capacity and flexibility as they were usually hardwired.  A typical user of the system could not choose who to talk to. He/She would communicate with the same person or group of people until the system was manually reconfigured to allow communication with a different group of people. Four-wire intercom  Intercom systems are widely used in TV stations and outside broadcast vehicles.  This reconfiguration was usually handled at a central location, but because voltage is used on the circuit to power the external user stations as  All well as communicate, there would signal and alarm usually be a pop when the channels system have their own were switched. specific function and  So while one could change the system uses which the purpose on-the-fly, it was usually not desirable and need of its user. to do so in the middle of a production, as the popping noise would distract to the rest of the production crew. Wireless intercom  There are two major benefits of a wireless intercom system over the traditional wired intercom.  The first is that installation is much easier since no wires have to be run between intercom units.  The second is that you can easily move the units at any time. Wireless intercom  Other wireless devices such as cordless telephones, wireless data networks, and remote audio speakers can interfere if they are near the intercom. What is the purpose of the alarm in an intercom system? For private dialogues, directions, collaborations, or announcement PLAY