What is the average kwh for a fiber optic to coax box

Toggle sidebar Toggle sidebar
K

kjmitchell3

Reputable
Jul 10, 2015
2
0
4,510
How much electricity does a fiber optic system use in a building with say 200 apartments? THe power to run the system has to come from somewhere. Especially the panels that convert the fiber signal to coax. Any ideas
 
Solution
Someone Somewhere


We're not talking about CPE here. Or an FTTH (usually GPON) network.

The OP specifically states "for a fiber optic to coax box", and expands it to be serving 200 apartments. I'm assuming that to be an optical node in an HFC network, and that the OP is asking because...
Sort by date Sort by votes
Someone Somewhere

Someone Somewhere

Titan
Sep 23, 2012
22,291
8
84,965

Not really. This is due to the fact that there's less signal loss in the fibre, but the electronics at either end draw a similar (or even larger) amount of power. Fibre amplifiers in particular have ridiculously powerful lasers that put off a lot of heat.

For an optical node, I wouldn't expect it to be much less than 1kW. Likely more.

That box, if it needs power, should have power requirements stated on a label, eg 5Vdc/0.5A. You can also check what adapter goes with it, but in any case it will be like 10W max.
Click to expand...
You're thinking of a modem or ONT. This is talking about the ISP's gear that goes between the fibre and coax sections of an HFC network. Usually serves a few hundred or maybe a thousand homes.

My guess is the ISP wants to split a node to deliver better performance, and put the new node in the building's basement, dedicated to them.
 
Upvote 0 Downvote
K

Kewlx25

Distinguished
Oct 23, 2009
2,275
0
20,160
Case studies of last mile networks typically had fiber pegged around 1/10th the power consumption in the datacenter. GPON is pretty decent. If you're just talking about normal point-to-point fiber Ethernet, that is not very power efficient.

My fiber ONT is 2.5Gb/s down, 1.25Gb/s up, 4 1Gb Ethernet ports and 2 POTS ports with a nominal consumption of 5 watts.

The SURFboard SB6141 172Mb down, 131Mb up with one 1Gb port has a nominal power consumption of 9 watts.
 
Upvote 0 Downvote
Someone Somewhere

Someone Somewhere

Titan
Sep 23, 2012
22,291
8
84,965


We're not talking about CPE here. Or an FTTH (usually GPON) network.

The OP specifically states "for a fiber optic to coax box", and expands it to be serving 200 apartments. I'm assuming that to be an optical node in an HFC network, and that the OP is asking because they're involved in maintaining a building and a cable company wants to put in a node in their comms room. The HFC equivalent of a fibre-backhauled DSLAM.
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom