IPTV hardware comm layer

[Mosaic]

Hi All:
Just installed an IPTV domestic service BUT it ONLY transmits on electrical outlets (120V) which are on the same 120V leg. My home is supplied with two 120V phases to produce 240V for heavy appliances as required. The house wiring has no apparent pattern of which 120V 'hot' is used in the 120V outlets.

My question: is there a device that allows me to bridge the IPTV signal into the second 120V leg. Perhaps via a 240VAC outlet? If not, can I make such a filter that permits IPTV but not the line voltage?

My IPTV providers solution, is to use a 120V extension cord routed to a 120V outlet that is on the IPTV 'hot' to supply the presently disconnected TV. That sucks.

 

[KeepItSimpleStupid]

I can't quite seem to find one, nut apparently they do exist.

With this http://www.dslreports.com/forum/r27399954-Ethernet-over-Powerline as basis, i would use a 0.1 uf X capacitor across some 240 VAC device.


http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=0CC0QFjAF&url=http://www.kemet.com/Lists/Filestore/EvoxRifaRFIandSMD.pdf&ei=mkriU4foNI6SyATEuYGIDA&usg=AFQjCNHXrto9Fbpiur1Qh89TPf_5RfOpSQ&sig2=JvhtBqXx0Q3bUMdp9kYMJg&bvm=bv.72197243,d.aWw&cad=rja

I searched for "Ethernet over powerline phase coupler"

I found 0.01 uf caps. X1Y1 . You could always try them and parallel if necessary.

Here http://kbase.x10.com/wiki/Phase_Coupling#Passive_Couplers is an article for X10 which doesn;t like the 0.1 uf solution. An X-10 passive coupler MAY work.

Also see: **broken link removed**

Here **broken link removed** is a real one.

 

[Mosaic]

This is the info on the 120VAC plug in 'Pluglink' comm devices
https://www.o2.cz/_pub/5e/1d/21/298878_730893_PL9661_I3_Manual.pdf

The X10 comms are . at a different frequency. The Pluglink Freq spec says 2 Mhz to 30Mhz.

 

[Mosaic]

Ok, I did some digging about for X2/Y2 caps I might have.

All of them are 250VAC rated, so I plan to place a pair in series for voltage spike buffering.

I have a couple 2200pf Y2 caps that are new, leftover from a Tek scope' PSU recap exercise. At 2-30Mhz the series pair yields 1.1nf and about: 72 to 5 Ohms reactance across the phases. At 120Hz it's 1.2Mohms to 18Mohms.
Worst case 120Hz current flow across the phases = 0.2mA. A power dissipation of .05W.

I guess I can wire them up across the phases using some #28 hookup wire with heatshrink for proper insulation which would act as fusible wires in case of an 'incident'.

 

[KeepItSimpleStupid]

Capacitors in series follow the resistors in parallel rule.

Rememeber, they can't be placed in the breaker panel.

Even so with X-10, the spikes (Data) occur at the zero crossings. The other adapter, is rated for 200 bps links.

X caps are DESIGNED to be placed across the line. They will fail in a "nice way". You could also have caps rated X1Y1 etc.

 

[Mosaic]

Well I tried to do it in a 240VAC A/C outlet... But no luck. I even tried a pair 0f .1uf X2 in series ...no luck either.

Could be the additional 70' of round trip cabling exceed the range.

I'll have to tap a 240 VAC off a Panel breaker and make up a receptacle it seems as modifying inside the panel isn't advisable.

 

[KeepItSimpleStupid]

For a quick test pick a double breaker and do it there.

 

[Mosaic]

It started to detect but still got problems. I traced the breaker to the TV supply and switched it to the other phase. That got it going!

 

[KeepItSimpleStupid]

That's another way to skin a cat.