Philips 14AA3322/40B Guía de instalación descargar pdf (Pagina 124)

Generation of a transport stream for DVB and realisation of a HF-modulated DVB-signal

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Exercise5

Play a little introducing different values of lost packets. What’s happening?

Doesn’t seem to be any changes at the constellation diagram, but there are some problems in the image.

There are some parts of the image missing. That’s due to these lost packets, there is some information

lost in them, so we can not see some frames of the sequence.

Exercise6

What does the bit error cause? Where is possible to see it?

We can see the errors in the constellation diagram and also in the video loop.

This kind of error affects the transmission by introducing channel noise, distortion, bit synchronization…

Exercise7

What does the byte error cause? Where is it possible to see it?

We also can see it in the constellation diagram and the video loop.

We will see the same kind of errors than in the previous exercise, but in this case instead of introducing

the error bite by bite (the smaller unit information) it affects by bytes (groups of 8 bits), so the error will

seem bigger introducing the same probability number in both options.

Go to the settings tab and click at the “RF Output Control”.

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Philips 14AA3322/40B Guía de instalación Pagina 124