CONSTELLATION QAM POUR PROLINK-4

1 Novembre 2002.

The QAM constellation diagram is now available as an option for the most advanced TV & Satellite Analyser in today’s market, the PROLINK-4 Premium.

OP-004-K: QAM constellation for PROLINK-4

The constellation diagram is the result of combining I and Q signals resulting from the QAM digital demodulation. It is very useful to identify some type of problems present in the digital signal which are otherwise difficult to observe.

OP-004-K: QAM constellation for PROLINK-4OP-004-K: QAM constellation for PROLINK-4OP-004-K: QAM constellation for PROLINK-4

Some of those problems include noise, phase jitter, compression, IQ level unbalance, presence of interfering signals, etc... Various signal impairments can be seen only on a zoomed constellation display. PROLINK-4 Premium offers that function too.

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PROMAX est une entreprise leader dans la fabrication de systèmes de test et mesure et d’équipements pour broadcast et distribution de signaux TV. Notre gamme de produits inclut des appareils de mesure pour réseaux câblés TV, télévision par satellite, broadcast, wireless et fibre optique. Des analyseurs FTTH et GPON, modulateurs DVB-T, streamers IP et convertisseurs IP (ASI, DVB-T) se trouvent parmi nos derniers développements.