Difference between revisions of "Teletext adaptor"

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[[Teletext]] offers one-directional data transmission, broadcast via an television signal (it is a ViewData like system). (Generally it is transmitted in an analogue television signal. Digital television uses a different system).
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[[Teletext]] offers one-directional data transmission, broadcast via an television signal (it is a ViewData like system).  
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More commonly it contains pages of text (including news) and crude graphics.
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Commonly it is found in analogue television signals and contains data for text and crude graphics. Digital televisions have text services which use a different method (almost HTML based).
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Teletext is also "Mode 7" on the BBC Micro.
  
 
== Required UHF/VHF Decoder (Tuner) ==
 
== Required UHF/VHF Decoder (Tuner) ==

Revision as of 04:02, 29 October 2012

Teletext Adaptor and Tuner from Microtext Ltd.


Teletext offers one-directional data transmission, broadcast via an television signal (it is a ViewData like system). Commonly it is found in analogue television signals and contains data for text and crude graphics. Digital televisions have text services which use a different method (almost HTML based). Teletext is also "Mode 7" on the BBC Micro.

Required UHF/VHF Decoder (Tuner)

The Microtext adaptor does not include a UHF/VHF decoder. Instead, it requires a composite video signal - which can be obtained from following sources:

  • From the Video Out socket of a Video Recorder (if one does own a VCR)
  • From the Microtext's Tuner (which was sold separately, for users who don't own VCRs)
    • The Microtext Tuner was intended to supply a Composite signal for Teletext adaptor.
    • Ie. unlike other CPC Tuners (like the MP-3) which were intended to supply a RGB signal to the CTM644 monitor.

Telesoftware

Unknown if the software included support for downloading Telesoftware? (hardware-wise it should be no problem since Telesoftware is transmitted as normal Teletext pages).

Pictures

  • Teletext adaptor pics

  • Front view

  • back view

  • PCB view

  • PCB back

  • side view


  • Teletext tuner pics

  • Front view

  • back view

  • side view

  • PCB view

  • PCB back

  • PSU view

  • PSU side view

pictures provided by Terje Grind

Reviews & Advertisement

Manual

Download manual as a pdf file: media:Microtext Teletext Adaptor Manual.pdf

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