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New Contributor
Posts: 3
Registered: ‎08-03-2011

ap 224 antenna gain

Hi.

 

I'm setting up a camus network and or AP of choice is AP224 and 225.

My question is, what values is recommended dBi for antenna gain when provisioning?

 

The only documentation I could find was the maximum dBi for the 225.

 

Antennas
• AP-225: Six integrated down-tilt omni-directional antennas for
3x3 MIMO with maximum antenna gain of 3.5 dBi in
2.4 GHz and 4.5 dBi in 5 GHz. Built-in antennas are optimized
for horizontal ceiling mounted orientation of AP-225.

 

 

Erik Hammervold

MVP
Posts: 707
Registered: ‎12-01-2010

Re: ap 224 antenna gain

The 225 has integrated antennas, and the provisioning will already know that and account for it.

The 224 has external antennas, and you'll provision whatever you attach to them.

 

--Matthew

if I've helped, please give kudos
if I've provided a solution, please mark the solution so others can find it
New Contributor
Posts: 3
Registered: ‎08-03-2011

Re: ap 224 antenna gain

Hi.

 

I don't think you really understood what I was asking for.

In principle, if I connect a banana, there is no decimal option for a banana in the controller, is there?

 

SO a numerical value is needed. Hence the quote i provided, witch is the only documentation i could find on the subject.

 

Wireless > AP Installation > Provision

External Antenna Parameters

 

5 GHz Antenna Gain (dBi)

2.4 GHz Antenna Gain (dBi)

 

Failure to provide a value gives "Please enter valid xx GHz antenna gain value"

 

 

So any clues?

 

Ps. forcing a value i an open text field, without any check against a valid range is quite frankly a bit sloppy programming? I mean.. I tested with a AP134 and set the values really-rally high, and the thing never came back up... Had do take a console cable and manually configure.... Not good at all. I have around 150 Aruba AP now, and typos can uccur. "3.5" vs "35" is a big issue....

 

 

-erik-

MVP
Posts: 707
Registered: ‎12-01-2010

Re: ap 224 antenna gain

I have 4dB antennas with .5dB loss due to cable/connector so I enter 3.5 on my AP60

 

I suppose Aruba engineers could put some sort of bound checking in, and maybe they have. I couldn't say.

Just put the gain of the antenna you have into the box.

 

I suppose I'm still missing your point, since that sounds too simple.

 

If so, can you make the question more specific?  What antennas are you using, and what number are you trying to enter?

--Matthew

if I've helped, please give kudos
if I've provided a solution, please mark the solution so others can find it
Aruba
Posts: 183
Registered: ‎04-27-2009

Re: ap 224 antenna gain

Antenna gain entered on the AP provisioning page can be any value between 0 and 63.5 (dBi) on a 0.5dBi grid. Admittedly a somewhat unrealistic range, that could have been limited to 20 or so.

 

Entering a different value should result in an error message and not cause any problems. If it dis, please report this as a bug.

 

Thanks,

/Onno Harms, Aruba

/Onno
New Contributor
Posts: 3
Registered: ‎08-03-2011

Re: ap 224 antenna gain

This was what I needed + google for antenneas etc. Plus oharms reply.

I needed to understand the link between the antenna and the controller regarding the antenna gain settings. Got it now.

Regular Contributor I
Posts: 236
Registered: ‎04-03-2007

Re: ap 224 antenna gain


oharms wrote:

Antenna gain entered on the AP provisioning page can be any value between 0 and 63.5 (dBi) on a 0.5dBi grid. Admittedly a somewhat unrealistic range, that could have been limited to 20 or so.

 

Entering a different value should result in an error message and not cause any problems. If it dis, please report this as a bug.

 

Thanks,

/Onno Harms, Aruba


I have an AP-ANT-1W paired with AP-224 and AP-114. Antenna specs say the gain is 5.8dBi (5GHz) and 3.8dBi (2.4GHz). Since the provisioning page won't allow me to enter values in non .5 increments what should I use? Does it make sense to use 6dBi and 4dBi?

 

Mike

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