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Heartbeat Cable questions

7 REPLIES 7
Anchor

Re: Heartbeat Cable questions

Thanks for all the advice everyone.

Red Carpet

Re: Heartbeat Cable questions

The cable lengths from the LNB to the decoders is supposed to work over 30 m with no major issues. Good quality cable helps. NO cables joints along the run.

The HB cable can also be 30 m. The HB cannot work over any other way other than a solid cable connection with the older decoders. A wireless extension is specifically not allowed.

The only way to avoid the HB cable is to replace all the decoders with new ones which allow for HB distribution over the LNB cabling via an SLNB Unicable LNB. Unicable connections DO NOT work with all the older decoders, however.  So you will have to be specific about which older decoders you have.

 

The HD PVR 2P (pace) definitely works on an SLNB. The HD PVR2U (UEC) is supposed to work but no one has ever confirmed that on this forum.

The 11xx DO NOT work with a Unicable port.

 

 

 

Octo LNB; 2 by 2x4 MS; 2 by ES 5-2; Dedicated PSU for LNB, ES's, MS's; HD PVR 4P x 2; Explora 1; DSD 660; FSM
Nominee

Re: Heartbeat Cable questions

Ok, this needs a bit more - re the TX / RX idea, not something we would know and therefore you would need to experiment. The frequency was around 5 or 7 MHz, perhaps Geoff recalls exactly what.

 

LNB to decoder is only sensitive under certain conditions, then it's suggested a max of 15 m (Geoff please correct me if I'm inaccurate).

You'll need to give specifics for further detail.

 

The HB is recommended at a max of 50 m by MC.

 

Some people use a second dish & LNB to help with some of these big property distance issues.

Anchor

Re: Heartbeat Cable questions

The idea was to have the second device in another part of the house, so the HB cable is a bit of a pain. Can any form of wireless TX and RX be used to wirelessly convey the HB to the second decoder?

In terms of cabling though, what is the maximum length for reliable operation (from Lnb to decoder, and HB length between decoders)?

Red Carpet

Re: Heartbeat Cable questions

The choice of RF port used depends entirely on WHAT you as the user want to do with RF distribution. 

If the only reason is for an HB connection between the two decoders, then the "better way" is, in fact, RF IN - RF IN. This frees up the RF OUT ports for signal distribution and connection to other TVs with RF inputs remotely located from the decoder location.

IF you want to be able to view content from both decoders "anywhere", then the Connections should be RF OUT -  an SLX 2 x 4 splitter from both decoders and distributed to all TVs with RF inputs. This way allows for remote control of the decoders via tvLINKs.

IF you want to simply "daisy chain" the decoders with other RF devices, then the way to go is RF OUT - RF IN, and distribute the signal from the RF OUT on the last decoder in the chain. This way only allows for remote control of the last decoder in the chain, provided there are no other devices in the chain after the last decoder.

Many other examples of how to inter-connect the decoders. What you DON'T want to do is allow HB t reach the secondary from two different sources, as this causes plenty of service problems.

The whole XV design is based on the XV decoders being in close proximity to each other, hence the HB cable. Both decoders are in fact receiving authentication info all the time via the LNB ports anyway.  The secondary will work for 30 minutes without a valid HB signal and then cut viewing.

 

 

 

Octo LNB; 2 by 2x4 MS; 2 by ES 5-2; Dedicated PSU for LNB, ES's, MS's; HD PVR 4P x 2; Explora 1; DSD 660; FSM
Anchor

Re: Heartbeat Cable questions

Thanks for the reply - right you are, security would of course be a problem.

 

Nominee

Re: Heartbeat Cable questions


@Rascal wrote:

Surely it should be RFout to RFin on the standard decoder?? (Although his setup did work and he said that way was 'better')


All decoders working with XV (XtraView) have a choice these days, either RF port can be used on any of the decoders.

Each setup has its own needs, so although it's often suggested one uses RF Out to RF Out (especially with RF distribution as well), it's not "the best" or only option.

These days a SLNB (Smart LNB) itself can also help with HB (HeartBeat) connections.

 


@Rascal wrote:

Secondly, is this pulse output just a signal to tell the second decoder that it is connected to a valid subscriber on the primary decoder?


Due to MC's security nobody knows exactly, but it's believed more complex than that. Not something you're likely to be able to be flexible with.

 


@Rascal wrote:

Why doesn't the secondary decoder just get enabled with a secondary smart card and an Lnb input?


Again, security. MC can't just trust the public, many would share their secondary decoder with another household if they could get away with it. without the HB the secondary will stop working after half an hour.

 

That's all from me.

Highlighted
Anchor

Heartbeat Cable questions

Hi all. I'm using a HDPv2 decoder as the primary and an old standard Dstv decoder for a extra view setup. A tech guy demonstrated the connections in store which worked fine.

He connected the 'heartbeat' (pulse) cable from RFout to RFout on each decoder. My questions:

Surely it should be RFout to RFin on the standard decoder?? (Although his setup did work and he said that way was 'better')

Secondly, is this pulse output just a signal to tell the second decoder that it is connected to a valid subscriber on the primary decoder? Why doesn't the secondary decoder just get enabled with a secondary smart card and an Lnb input? Just Curious