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Class A and class B plasmas

Discussion in 'Plasma TVs' started by LeonidS, Feb 4, 2003.

  1. LeonidS

    LeonidS
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    Could anybody comment on the following :

    Plasma screens come in two types. Class A and Class B. These are electromagnetic wave radiation standards. Class A radiation screens are for standard commercial use. Class B radiation screens are for home use. You will have to by a Class B screen becuase of the extra radiation shielding built in.
     
  2. YYZ

    YYZ
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    Using a class A screen in your house is not going to make you grow a third head. It could interfere with other equipment but the experience of most people on this forum, including me, I would suspect is that there is no problem with a Class A screen domestically. The commercial screens are cheaper and arguably offer better pictures as a result of not having another layer of shielding
     
  3. LeonidS

    LeonidS
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    I was told it is illegal to sell class A screens for Home use in Germany.

    Insteresting but how Panasonic and others sells these screens there?
     
  4. MarkTaylor

    MarkTaylor
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    Pioneer has both their domestic and commercial screens rated as Class B so they neatly avoid the issue all together.

    Mark
     
  5. StooMonster

    StooMonster
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    Is part of the price difference between commercial (Class A) and the domestic (Class B) different glass used to reduce the electromagnetic wave radiation?

    StooMonster
     
  6. Joe Fernand

    Joe Fernand
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    StooMonster

    From discussions with Panasonic Business Systems UK I am led to believe that whilst in the early days they (and other manufacturers) used differing front screen filter techniques on the differing models they dont do this now and that all of there screens meet with all standards.

    You need to pay a fee to have a screen licensed as A or B and the licence fee is very different - how this affects the retail price I'm not sure.

    As Mark says Pioneer also now cover both standards with every screen type they sell.

    There was a good post early last year on AVS Forums from a guy who works at Fujitsu which explained in detail what they do as far as different filtration on differing screens - of course if there are different filters you then get in to subjective viewing differences between the filters :)

    LeonidS - you'll have to guide your supplier as to what's legal or not in Germany; strangely enough we have a video production company customer in Germany who have purchased plasma displays and those boys sit in front of the displays on a daily basis far longer than anyone would at home.

    Possibly part of the issue may be a bigger take up of wireless technologies in Germany and the worry about cross interference with telecom and security systems! though this is not something we have had any issues with so far on installs in the UK.

    Best regards

    Joe
     

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