Electronics Lab Philippines

MATV System

Offline Systems_007

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MATV System
« on: July 29, 2010, 07:08:09 AM »
Meron na po bang naka-pagdesign ng MATV dito? pede makihingi ng inputs/ overview. kung may block diagram mas okey. thanks. ;D

Bakit kelangan pa mag-abroad kung may asenso naman sa AVON....kaboooog

Offline Mr. D

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Re: MATV System
« Reply #1 on: July 29, 2010, 08:12:50 PM »
antenna -> modulator -> multiplexer -> amplifier
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Offline Systems_007

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Re: MATV System
« Reply #2 on: July 31, 2010, 08:51:29 AM »
antenna -> modulator -> multiplexer -> amplifier

Ano po function ng multiplexer sir sa layout(block diagram)?
Bakit kelangan pa mag-abroad kung may asenso naman sa AVON....kaboooog

Offline Mr. D

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Re: MATV System
« Reply #3 on: July 31, 2010, 05:30:17 PM »
Antenna / Disc - Receiver
Modulator - Assigned ng Channel
MUX - dito pinagsasama sama yung mga channels
Amplifier / Trunk Amplifier - Boost up.

*meron pang ibang mga ikinakabit dyan, pero ito ang Basic. MATV / CATV.
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Offline h5n1

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Re: MATV System
« Reply #4 on: March 27, 2012, 06:09:13 PM »
Antenna / Disc - Receiver
Modulator - Assigned ng Channel
MUX - dito pinagsasama sama yung mga channels
Amplifier / Trunk Amplifier - Boost up.

*meron pang ibang mga ikinakabit dyan, pero ito ang Basic. MATV / CATV.

of course some spliter and coupler para sa distribution sa building,,,i can give you design pagdating sa distribution..



Offline eirol_99

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Re: MATV System
« Reply #5 on: March 27, 2012, 07:18:52 PM »

terrestial antenna=splitter--channel processor(for each local broadcast channels) abs-cbn------C
                                  ------------- gma--------------------------------------------------O
                                                                                                                                 M
                                                                                                                                 B------- Launch amp---- trunk
sattelite dish--receiver-- modulator----------------------------------------------------------I
                                                                                                                                 N
                                                                                                                                 E
                                                                                                                                 R

kung malakas ang local broadcast gumagamit ng channel processor, boost nya signal at bandpass filter para wala makapasok na interference sa system, if nasa channel 7 yung gma, ch 7 din ang channel processor, then sa sattelite programs/channels, kailangan ng modulator para yung AV signal ay modulated into rf signal, u can also use the modulator on video playback systems and even live camera feeds. output ng channel processor at modulators ay pupunta sa combiner, parang splitter lang pero baliktad, then yung output nya is papasok na sa launching amp, then for distribution na.
kailangan na naka flat yung output mo sa combiner, ie dapat for ech channel eh pare pareho ng signal strength bago i feed sa amp, then adjust na slope sa amp para mas malakas ng kunti ang higher bands dahil sa attenuation ng higher freq sa cable.