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Coax Signal loss with H10/H15

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

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alphaiii_apc
Crewman
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Coax Signal loss with H10/H15

This was originally posted on APC forums on 1/12/2009


I was wondering if someone could give some more info on the coax protection in the H type power conditioners.

Is it really as high as 6-8db insertion loss? I had an H10, and I didn't seem to notice any visible signal degradation, but I returned it for the H15 for the additional features.

Now I'm wondering, since the H15 has a built in coax splitter, will the signal loss be higher with the H15?

Also, are these coax connections bi-directional? For instance, will a pay-per-view order info be sent back to the source across these connections, or are they only capable of receiving info. I ask because I didn't have the option to try this with the H10, but will be able to in the near future.

Final question - does anyone know the clamping voltage for the coax protection?

I wish APC would make these full specs readily available.

Thanks.


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BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 1/12/2009


ohh!

all APC devices that have surge protection work in the same manner. if the device were to be overwhelmed by a surge transient, the circuit within the device will “OPEN” sacrificing itself to save your equipment, therefore, not allowing any further surges to pass through to the protected equipment.

not sure why it doesnt mention it on the website correctly for the H type.

See Answer In Context

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BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 2/27/2009


sorry for the delay - with common sense in mind, i'd agree with you but personall i dont know off hand and i would probably ask the cable company if you could, just to be sure.

alphaiii_apc
Crewman
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Re: Coax Signal loss with H10/H15

This was originally posted on APC forums on 2/16/2009


I have another question regarding the coax splitter in the H15.

Since the splitter is NOT bidirectional, does this mean you could not connect a cable model to the coax on the H15? I'm assuming for internet purposes you would need a bidirectional splitter, correct?

BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 1/12/2009


hi, i should be able to answer these for you

Is it really as high as 6-8db insertion loss? I had an H10, and I didn't seem to notice any visible signal degradation, but I returned it for the H15 for the additional features. Now I'm wondering, since the H15 has a built in coax splitter, will the signal loss be higher with the H15?
[take a peek at this article|http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=912]. as stated, the insertion loss for any of APC's products with coax protection is 2.3dB. if i am not mistaken, that would be for each particular connection.
Also, are these coax connections bi-directional? For instance, will a pay-per-view order info be sent back to the source across these connections, or are they only capable of receiving info. I ask because I didn't have the option to try this with the H10, but will be able to in the near future.
unfortunately, all of APC's coax protection is bi-directional, BESIDES those with splitters.
Final question - does anyone know the clamping voltage for the coax protection?
[take a peek here|http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=65]. per this article, Let-Through Voltage is actually the difference between the effective clamping voltage and the peak AC voltage. For example, a UL 330V rating indicates that the let-through voltage to the protected equipment is < or = 330V minus 169 volts peak (for a standard 120 VAC power).

the let through voltage on the H15 is <40 volts. thus, you'd take 169v (the peak of the sine wave for nominal 120v) and add 40v to that. 209v would be the clamping voltage per that calculation.

let us know if you need anything else!

alphaiii_apc
Crewman
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Re: Coax Signal loss with H10/H15

This was originally posted on APC forums on 1/12/2009


So the coax connections on the H15 are NOT bi-directional, but the connections on the H10 are?

And thanks for all your help.

Message was edited by: alphaiii

BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 1/12/2009


yes you're right. since the H15 has a splitter, you will encounter an issue with those pay per view services, etc

i am assuming it is just a limitation of using a splitter like that.

alphaiii_apc
Crewman
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Re: Coax Signal loss with H10/H15

This was originally posted on APC forums on 1/12/2009


Got ya. OK. Canceled the H15 order, unfortunately.

I need the bi-directional coax to take advantage of comcast pay-per-view and on-demand. I'm stuck for comcast for at least the immediate future. Sucks though, b/c the H15 can support more equipment, and the diplay is an added bonus.

My reason for upgrading to the H15 was to allow room for expansion of my A/V system, and have the conditioner still be able to support all the equipment. I have no plans to get into power amps or hi-fi separates, so hopefully the H10 will be able to handle all I throw at it.

Right now, I have:
46" LCD
Digital AVR (XR55)
DVD player
HD cable box
10" sub with 150W amp
PS2

With this setup, I have plenty of room left with the H10. However, just switching from the XR55 to a high-current AVR will jump me from a 135W draw to 600W draw (according to the manufacturer's ratings). Throw in a new game system and now I'm worried. The PS3 alone is listed at 380W...which is ridiculous. Not to mention, if I upgrade the sub to one with a beefier amp.

alphaiii_apc
Crewman
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Re: Coax Signal loss with H10/H15

This was originally posted on APC forums on 1/12/2009


One other thing I wanted to double-check...

The website descriptions of the C5 and C10 both make mention of the fail-safe type mechanism, where if the equipment is compromised, all ac power to the connected equipment is cut off.

There is no mention of this fail safe in the descriptions of the H10 and H15. Do they also have this feature?

BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 1/12/2009


where are you seeing that? i cant find it. 😞

alphaiii_apc
Crewman
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Re: Coax Signal loss with H10/H15

This was originally posted on APC forums on 1/12/2009


http://apc.com/resource/include/techspec_index.cfm?base_sku=C5BLK&tab=features

"Fail Safe Mode Most other surge suppressors continue to let power through even after their circuits have been damaged, leaving your equipment exposed to future surges. APC’s SurgeArrest fail safe, which means that once the circuit of an APC SurgeArrest has been compromised the unit disconnects equipment from the power supply ensuring that no damaging surges reach your equipment."

This is listed in the product overview for the C5 and C10...however not for the C3, H10, or H15.

There is also this:
"Catastrophic Event Protection SurgeArrest components such as MOVs and Thermal fuse ensure instantaneous reaction to lightning strikes and wiring faults. If the surge components are damaged due to power spike or over voltage, excess power cannot reach your equipment. Unlike the APC SurgeArrest products, most surge suppressors continue to let power through even after circuits have been damaged, leaving your equipment exposed to other damaging surges"

...which is listed for the C3, C5, and C10...but not the H type conditioners.

BillP
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Re: Coax Signal loss with H10/H15

This reply was originally posted by Angela on APC forums on 1/12/2009


ohh!

all APC devices that have surge protection work in the same manner. if the device were to be overwhelmed by a surge transient, the circuit within the device will “OPEN” sacrificing itself to save your equipment, therefore, not allowing any further surges to pass through to the protected equipment.

not sure why it doesnt mention it on the website correctly for the H type.