If you have a tuning adapter (it resembles a cable box) then you have SDV, 
otherwise you would be missing a large number of channels. 


Glen

On Sep 5, 2010, at 10:15 AM, "s.l-c.o" <[email protected]> wrote:

> So if I have Charter and HD I have this on my Tivo? Maybe that is why I 
> always have new channels added to my lineup.
> 
> Sandra
> 
> 
> 
> The short version is SDV is a way for cable operators to squeeze more
> channels, especially HD channels, into the finite bandwidth they have on the
> cable.  Especially areas that are still operating at lower total frequencies
> - such as maxing out at 650MHz or 750MHz.  Areas where the system is newer
> and operates at 860MHz or 1GHz have more 'raw' channels to use and so don't
> have as much pressure to use SDV.  But there are other factors in play - how
> many analog channels are still carried (each analog channel displaces
> roughly 2 digital HD channels or 6-12 digital SD channels), the total number
> of channels offered, etc.  As more channels go HD, and more channels are
> offered in general, we're seeing more SDV deployed.
> 
> Deploying SDV can be more cost effective (aka cheaper) than upgrading an
> entire system's infrastructure to support 1GHz of bandwidth, which is what
> many older 650/750/860MHz systems would require.  It can mean upgrading the
> head end, replacing any repeaters, switches, signal boosters, etc in the
> system.  Possibly replacing any cable boxes in the field that don't have
> 1GHz tuners.  And even replacing old cables.  It all adds up.  In the long
> run it isn't a bad thing, as the newer infrastructure is also better for
> high speed data services, and can support more VOD services, etc, but it
> costs a lot and takes time.  So many operators will roll out SDV now, and
> upgrade the network over years as natural service windows come up (HW gets
> replaced anyway, so replace it with more capable gear over time).
> 
>> As for the remote, it can be programmed to control power, volume, mute,
>> input on your TV and audio receiver. This is true back to even the old S1
>> boxes. Use the menu on your TiVo to see the instructions regarding the
>> remote.
>> 
> Yep.  All TiVo remotes can control a TV and/or an AV receiver.  They all
> have pre-programmed code sets that can be used.  Some TiVo remotes are also
> learning remotes and can 'learn' IR codes not already in their pre-loaded
> memory.  The S3, Glo, HD XL, Premier XL, and Slide remotes are learning
> remotes.  All S1/S2 and not XL S3/S4 remotes are not learning remotes.  (I
> believe the backlight is another distinction - if the remote has a
> backlight, it is a learning remote - if it doesn't have a backlight, it
> isn't.)
> 
> The learning feature is restricted to the non-TiVo specific buttons - TV
> power, volume, input, mute.
> 
> -- 
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