This.
josh reynolds :: chief information officer
spitwspots :: www.spitwspots.com
On 01/12/2015 11:00 AM, Mike Hammett wrote:
Matt, that doesn't really help.
In many areas, my noise/interference/whatever is -75. If I knew how much margin
was required per modulation, I could figure out how much signal I need for that
speed.
I can't do that with your published numbers.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
----- Original Message -----
From: Matt Hardy <[email protected]>
To: [email protected]
Sent: Mon, 12 Jan 2015 12:42:52 -0600 (CST)
Subject: Re: [AFMUG] Af5
Hi Mike,
The numbers in our datasheet do convey the SNR (which assumes AWGN for
noise value); this is pretty standard among all our datasheets.
The noise floor value varies based on channel BW, so a rough estimate for
noise floor would be (50MHz=-97dBm, 40=-98dBm, 30=-99dBm, 20=-101dBm,
10=-104dBm).
As far as transmit power / modulation, all modulations up to 64QAM can run
at full transmit power. 256QAM is ~2dB lower, and 1024QAM is something like
4dB lower (it depends on other external factors).
All of this and more is already provided with the integrated link
configuration tool, including channel bandwidth, duplex frequency spacing,
TX power and a bunch of other stuff. It's recommended to use this tool to
configure links because of all of the additional factors.
But if you need to run a simple link calc to estimate a link's performance
at certain distance, you should have enough info.
Hope that helps...
-Matt
On Sat, Jan 10, 2015 at 10:06 AM, Mike Hammett <[email protected]> wrote:
Not at all, Matt. Those are receive sensitivities.
The left side of this picture is needed for the airFibers. You publish the
right side only.
This information is also not available for the airFibers.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
------------------------------
*From: *"Matt Hardy" <[email protected]>
*To: *[email protected]
*Sent: *Friday, January 9, 2015 5:34:43 PM
*Subject: *Re: [AFMUG] Af5
This?
[image: Inline image 1]
On Thu, Jan 8, 2015 at 5:18 PM, Mike Hammett <[email protected]> wrote:
Hard to tell because they won't publish their Tx and SNR requirements.
I'd just make educated guesses and plug it into a path calc.
BTW: Ben, Matt... where are those numbers?
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
------------------------------
*From: *"Craig House" <[email protected]>
*To: *[email protected]
*Sent: *Thursday, January 8, 2015 3:24:58 PM
*Subject: *[AFMUG] Af5
I have used some AF 24 hours but no AF5 for backhaul yet what is the max
distance people are seeing for the AF 5 at full modulation
Sent from my iPhone
