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Nighthawk CM1100 power consumption?

kindzmarauli
Aspirant

Nighthawk CM1100 power consumption?

Would anyone know Nighthawk CM1100 DOCSIS 3.1 Cable Modem average / peak power consumption? (Finding it neither on the product page nor in the docs.

Thanks!

Message 1 of 7
antinode
Guru

Re: Nighthawk CM1100 power consumption?

> [...] Finding it neither on the product page nor in the docs.

 

   For what, exactly, were you looking?  I'd check the ratings on the
labels for the device and its power adapter, or in its User Manual,
under "Technical Specifications", where I see:

 

      [...] Output: 12 VDC, 2.5 A

 

   12V * 2.5A = 30W

 

   That'd be maximum.  For a realistic value, you might need to measure
it:

 

      https://en.wikipedia.org/wiki/Kill_A_Watt

Message 2 of 7
kindzmarauli
Aspirant

Re: Nighthawk CM1100 power consumption?


@antinode wrote:

For what, exactly, were you looking?


You mean the reason? So I could size it up with a battery (UPS), to estimate runtimes.

 

P.S. Agreed, PSU rating is not a realistic value and thus shouldn't be used.

P.P.S. Don't have it, so can't measure - which is why I am asking.

Message 3 of 7
antinode
Guru

Re: Nighthawk CM1100 power consumption?

> You mean the reason? [...]

 

   No.  You said that you were "Finding it neither on the product page
nor in the docs."  I found _a_ power value, so I wanted to know, "For
what, exactly, were you looking?"  Hence that question.

 

> [...] So I could size it up with a battery (UPS), to estimate
> runtimes.

 

   Even the max of 30W would not be much for a typical computer-sized
UPS.  How much stuff were you planning to run on the UPS, for how long?
How precisely did you expect to gauge this stuff?

 

> P.S. Agreed, PSU rating is not a realistic value and thus shouldn't be
> used.

 

   I'd say that it's very "realistic" as an upper bound, and suitable
for that use.


> P.P.S. Don't have it, so can't measure - which is why I am asking.

 

   Is this "it" the power meter?  On the DC side, even a small ammeter
ought to be good enough.

 

   Be careful with your assumptions.  A typical UPS is rated for use
near its maximum output, and its efficiency may drop significantly under
a light load.

Message 4 of 7
kindzmarauli
Aspirant

Re: Nighthawk CM1100 power consumption?

I am guessing nobody has the answer to the question of actual power consumption. That's too bad. (But some of us are eager to engage in a Friday afternoon ego measuring contest. Mind if I bow out?)

Message 5 of 7
antinode
Guru

Re: Nighthawk CM1100 power consumption?

> I am guessing nobody has the answer [...]

 

   I can't speak for everyone; I don't have a unit to measure.  My
attempts so far to gather more useful information about the situation
have failed.

 

> [...] Mind if I bow out?

 

   Your actions are your business.  I hope that your power analysis is
better than your psychological analysis.

Message 6 of 7
FURRYe38
Guru

Re: Nighthawk CM1100 power consumption?

The consumption you seek may take more complex test equipment to help you figure out. This is a home class modem. Not much call for consomption data rates and information. Most of the time it's just connected to a power outlet and if the power goes out, then users deal with the outage for a while. For me, I have had this modem connected to a UPS and a cheap 2.4Ghz wifi router connected as well just or some simple internet services when we have had a power outage. For the model UPS we have, the UPS lasted for about 30 minutes before it stopped. The best guestimate about some modem consumption on UPS when the even happens. 

 

Other than this, if you want more detailed info, you'll probably need to do your own testing to find out. Forums are mostly for user help and user experiences to share. Not heaving on details on what happens behind the scenes and power consumption. My last job was power consumption involved and is fairly complex to test out depending on device. Many variables. 

 

Best suggestion if you really want to find out  is to get you a power anyalyzer and connect the modems power adapter to the Anyalyzer and if your on a 1Gb ISP service line, do some downloading and uploading at the same time to and see what the analyzer says. 

 

Good Luck.

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