SatSig topic:

hughes has developed ACM on return link ??

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Jul 19^th, 2011 at 6:43am

hughes Hub System has developed ACM on return link ?? can any one tell me is this correct ??

Jul 19^th, 2011 at 8:53am

ACM refers to the dynamic modification to the DVB-S2 outlink carrier to suit the link towards each VSAT remote.

The return links have dynamic FEC coding. The hub receiver (at a particular TDMA frequency and symbol rate) can deal with bursts of several different FEC rates, without knowing in advance what to expect.

Overview: https://www.hughes.com/ProductsAndTechnology/BroadbandSatelliteSystems/TheHughes...

HN system: https://www.hughes.com/HNS%20Library%20For%20Products%20%20Technology/HN-System_...

HX system: https://www.hughes.com/HNS%20Library%20For%20Products%20%20Technology/HX%20Syste...

Bentley Walker have at least 5 HX hubs and Avanti-Hylas have a HN hub. I suggest you call them if you want a customer's perspective on the possible purchase of a HN or HX hub, otherwise discuss with Hughes direct to clarify the exact technical features.

Best regards, Eric.

Jul 19^th, 2011 at 1:24pm

Thanks Eric