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Digital SWM theory and speculation


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240 replies to this topic

#226 OFFLINE   P Smith

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Posted 12 April 2014 - 06:58 PM

oops ! some engineer of the DSWM apparatus is hiding over there?


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#227 OFFLINE   Stuart Sweet

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Posted 12 April 2014 - 07:24 PM

You're trusting someone with the name "mr. E LNB?"

There isn't any question of the viability of the technology. There are literally thousands of viable technologies that are never implemented.
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#228 ONLINE   AntAltMike

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Posted 12 April 2014 - 07:26 PM

I have to question the credibility of a first time poster who claims their location is in Asia, and uses an Egyptian IP address.


Maybe he's one of those ethnicities that, like, knows technical stuff.

#229 OFFLINE   P Smith

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Posted 12 April 2014 - 07:28 PM

perhaps he is on vacation over there ?

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#230 OFFLINE   veryoldschool

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Posted 12 April 2014 - 07:58 PM

You're trusting someone with the name "mr. E LNB?"

There isn't any question of the viability of the technology. There are literally thousands of viable technologies that are never implemented.

"We" know of two products implementing this.

"Mr E LNB" could be on a stopover at the airport in Egypt, but "one post" doesn't make an expert reference.

 

For that matter why not be "Mr D LNB" as echostar isn't a user of this technology?

 

Without any more information or posts, "it's meaningless" at this time. .


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#231 OFFLINE   slice1900

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Posted 15 April 2014 - 12:45 PM

Saw this in a summary of breakout sessions for Directv's Revolution 2014 dealer conference http://www.engagengo...media/ALL1.pdf:

 

MDU 103
Product Road Map
Have you heard about the MDU product map? If you would like to learn more about DRE in MDU, Broadband, plans for SWIM 16, Technical Specifications, Genie, and upcoming products launches, then this is for you!

 

I wonder what "plans for SWIM 16" refers to? I think we all agree that a DSWM makes more sense for a MDU than for residential at this point, maybe they're going to announce the timeline for the introduction of a DSWM23 to the dealers this week? That's not the only possibility for what that means, but the most interesting as far as this thread is concerned...

 

Too bad no one who is in on that session would be able to talk about it, I'm sure there would be some interesting discussion about a lot of topics!

 

There was another breakout that mentioned a DSWM13 LNB for loop through DRE, which Stuart had already confirmed existed.


SL5, PI-6S, SA-6AL, 3xSWM16; 23 H20-100, 7 H24-700/AM21


#232 OFFLINE   Stuart Sweet

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Posted 15 April 2014 - 05:31 PM

I will actually be at those breakouts and I'll let you know if there is anything I can report.
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#233 OFFLINE   Stuart Sweet

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Posted 16 April 2014 - 09:52 AM

DSWM does not seem to be on the MDU roadmap.
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#234 OFFLINE   slice1900

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Posted 16 April 2014 - 12:42 PM

Thanks, Stuart. What are the "plans for SWM16", if you're allowed to say?

 

Unrelated to DSWM, but I'm curious - was there any mention of new RDBS/BSS bands with the upcoming satellites? Perhaps given that D14 wouldn't be fully operational before the end of the year (and even that's optimistic considering the continued schedule creep) that might be more of a topic for next year's conference... If you can't give details, I understand, but even knowing that it was mentioned would be very interesting information!


SL5, PI-6S, SA-6AL, 3xSWM16; 23 H20-100, 7 H24-700/AM21


#235 OFFLINE   Stuart Sweet

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Posted 16 April 2014 - 08:21 PM

No changes to SWM16. It continues to play a strong part in DIRECTV's D2lite program.
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#236 OFFLINE   captkillao

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Posted 16 April 2014 - 11:47 PM

DSWM does not seem to be on the MDU roadmap.

 

It is so far only for the DRE hospitality market. Will need an AIM meter to program the switchs to the receivers in a loop through system with approved SWM taps. Already got my cert to install them. There is also the SWM5 but I think it will be for the residential side.



#237 OFFLINE   slice1900

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Posted 27 April 2014 - 03:03 AM

Entropic announced the follow on to the EN5400 (used in the DSWM13) that they mentioned in the last earnings call. The EN5500/5510/5520 support six, seven and four 250-2350 MHz inputs, respectively, and one, three and two 24 channel outputs. Since Maxlinear and Broadcom's dCSS chips also support 24 channels (as well as the DSWM ASIC) it seems as though that's the new standard and Directv's OEMs will have a choice of at least three chip suppliers which should help keep costs down.

 

http://online.wsj.co...421-901274.html


SL5, PI-6S, SA-6AL, 3xSWM16; 23 H20-100, 7 H24-700/AM21


#238 OFFLINE   P Smith

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Posted 23 December 2015 - 05:27 AM

Slice1900 is very accurate on a lot in what he says. Re-visit this tread in 12 months time and read again... :-)

Well, it was a stake on  Entropic, but new DLNB [3D2 model] came with MaxLinear chip [MxL865] , he-he.


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#239 OFFLINE   slice1900

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Posted 23 December 2015 - 02:23 PM

Maxlinear actually bought Entropic earlier this year. Entropic never actually did any of their own designs anyway - the analog SWM's RF5201, the DSWM13's EN5400 that supported 20 channels, and the EN5500 that supported 24 channels were designed by three different companies that Entropic acquired. That creates potential difficulty for follow on products as engineers become likely to leave after multiple acquisitions, so it makes sense to go with Maxlinear's in-house designed MxL865. Broadcom also offers dCSS chips that support SWM, which allows more flexibility than the situation with analog SWM, since those chips were made by only one company. Though I'm not really sure how this works, if Directv specified use of the MxL865 or they just gave requirements to WNC/PBI/Eagle who were free to choose whatever chip they want that met Directv's requirements.

 

From what I understand the MxL865 is now capable of at least 32 channels through utilizing the range below 950 MHz. Newer STBs like the HR54 (as well as the short lived H23/HR23) have tuners able to tune down to 250 MHz and could access those extra SWM channels with a firmware upgrade. So you never know, maybe today's 3D2 or reverse band LNB could support even more than 21 or 22 channels down the road, though perhaps not anytime soon or with any of today's equipment.


SL5, PI-6S, SA-6AL, 3xSWM16; 23 H20-100, 7 H24-700/AM21


#240 OFFLINE   Tom Robertson

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Posted 23 December 2015 - 02:42 PM

Maxlinear actually bought Entropic earlier this year. Entropic never actually did any of their own designs anyway - the analog SWM's RF5201, the DSWM13's EN5400 that supported 20 channels, and the EN5500 that supported 24 channels were designed by three different companies that Entropic acquired. That creates potential difficulty for follow on products as engineers become likely to leave after multiple acquisitions, so it makes sense to go with Maxlinear's in-house designed MxL865. Broadcom also offers dCSS chips that support SWM, which allows more flexibility than the situation with analog SWM, since those chips were made by only one company. Though I'm not really sure how this works, if Directv specified use of the MxL865 or they just gave requirements to WNC/PBI/Eagle who were free to choose whatever chip they want that met Directv's requirements.

 

From what I understand the MxL865 is now capable of at least 32 channels through utilizing the range below 950 MHz. Newer STBs like the HR54 (as well as the short lived H23/HR23) have tuners able to tune down to 250 MHz and could access those extra SWM channels with a firmware upgrade. So you never know, maybe today's 3D2 or reverse band LNB could support even more than 21 or 22 channels down the road, though perhaps not anytime soon or with any of today's equipment.

Knowing how DIRECTV operates (and likely to carry over to AT&T if it doesn't already) they won't spend more on LNBs that can do more than current LNBs. 

My guess is the only reason they went with more than 14 channels is this set of chips is cheaper than the last set. Otherwise they wouldn't go beyond 13. :)

 

Thanks for the updates, by the way.

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#241 OFFLINE   slice1900

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Posted 23 December 2015 - 05:47 PM

They won't spend more on LNBs just for greater functionality (i.e. they don't have a reason to care about LNBs that do 32 channels instead of 22) but they would be willing to spend more for greater integration, and there are opportunities for that with the changes they'd have to make the LNB front end to support reverse band. Have to wait and see what the front end of the reverse band LNB looks like, and if it is the same front end they use for the legacy reverse band LNB, when that's introduced.


SL5, PI-6S, SA-6AL, 3xSWM16; 23 H20-100, 7 H24-700/AM21





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