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Community Member

## 1140 and WCS Antenna Angle Property

Does the angle of the antenna only come into question with models that have external antennas?  One of my colleagues says that the 1140 has two different angle indicators for placement on a map in WCS:

If the unit is on a table facing 'up' that this orientation is 0 degrees

If the unit is on a ceiling facing 'down' that this orientation is 180 degrees

My rebuttal is that both are 0 degrees due to the fact that it's omni directional antennas and that facing 'up/down' is irrelevant.  Can anyone give me any supporting documentation that would clear this up for us?

Regards,
Scott

12 REPLIES
Hall of Fame Super Blue

## Re: 1140 and WCS Antenna Angle Property

Would the vertical and horizontal radiation footprint help?

Cisco Aironet Antennas and Accessories Reference Guide

http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/product_data_sheet09186a008008883b.html

Community Member

## Re: 1140 and WCS Antenna Angle Property

Leo -

Not really.  It's more of a question like 'Which end is up?'.  If the AP is sitting on a desk, is the antenna position/orientation 0 degrees, and when on the ceiling 180 degrees?  Is it the reverse (180 and 0)?  Again, this has to do with the antenna angle in WCS, and I don't think it matters which way the AP is installed since it's omni directional and built in antennas.  Perhaps if you mounted it on a wall you could specify 90 degrees?  So essentially I'm looking for someone to tell me it's zero degrees or 180 degrees, and a link to the document that shows that.

Regards,
Scott

Hall of Fame Super Blue

## Re: 1140 and WCS Antenna Angle Property

I'm no expert in radios so here's my point of view ...

One thing I like about the 1130 and 1140 is the way the signals propagate.  If I look at the fancy azimuth (horizontal) and elevation (vertical) radiation pattern, it shows that if mounted on the ceiling with the logo facing downwards, the footprint goes AROUND the AP (horizontal).  From top to bottom, the radio signals look like an upside-down musroom.  Good signals below the AP and slight signal on the back of the AP.

That's how I look at things.  If anyone thinks I'm wrong, feel free to correct me.  (Get a score too!)

Community Member

## Re: 1140 and WCS Antenna Angle Property

Just curious if you have found the answer to this yet? I've been trying to find some clarification for this, but have been unsuccessful.

Brock

Community Member

## Re: 1140 and WCS Antenna Angle Property

I believe 1140 APs radiate in the direction that the "cisco" logo is facing.

The 1140 internal antennas are omnidirectional in the (horizontal) Azimuth Plane, but not in the (verticle) Elevation Plane.

The WCS seems to account only for elevation in the horizontal plane so this setting wouldn't matter for an onmidirectional antenna on an 1140.

As leolaohoo said earlier, you should check the radiation pattern: http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/product_data_sheet09186a008008883b.html#wp9002320

The confusing thing about the radiation pattern diagram is that it doesn't tell you if the AP is facing upwards or downwards to produce the elevation plane radiation pattern.  I think it faces downwards to produce the pattern found in that reference guide, as if the AP were mounted on a drop-ceiling t-grid.

Jonathan

Hall of Fame Super Blue

## Re: 1140 and WCS Antenna Angle Property

One of the Cisco Wireless experts (I think it was Dan) confirms my suspicion that the 1130/1140 (and maybe the 3500i) models can be mounted either hanging from the roof (with the Cisco logo pointed downwards ideally but can be upwards too) and wall mounted because the signals emanating from the internal antennae is formed like a round ball all around.

Community Member

## Re: 1140 and WCS Antenna Angle Property

I asked Lee Johnson during the 'ASK THE EXPERTS' on the WLCs.  He confirmed my suspicion that it all doesn't mean anything when it comes to APs with omni antennas built in like the 1131 and 1142.  His response was this:

Scott,

This I know We actually get that question a lot.  You are correct.  The APs with  the internal antennas like the 1130, 1140, and the 3500 the elevation  will be zero.  Up and down are irrelevant as well as the Azimuth since  the radiation pattern is 360 degrees.

Thanks,

Lee

https://supportforums.cisco.com/message/3155877#3155877

Regards,
Scott

Hall of Fame Super Blue

## Re: 1140 and WCS Antenna Angle Property

Yes.  This is the one.  Thanks Scott (+5).

Community Member

## 1140 and WCS Antenna Angle Property

Does the 360 degree pattern look more like a pancake or a sphere? I have mounted an AP on the wall, so the Cisco logo is facing the room.

Hall of Fame Super Silver

## Re: 1140 and WCS Antenna Angle Property

So your RF will look like an oval and you would use with 90 or 360 in WCS.

Sent from Cisco Technical Support iPhone App

-Scott

## Re: 1140 and WCS Antenna Angle Property

Hello Scott,

As per your query i can suggest you the following steps-

The Cisco Aironet 1140 series access point caters to indoor environments that demand outstanding wireless performance while blending in seamlessly with the aesthetics of the enterprise environment. In order to meet these set of requirements, the Aironet 1140 was designed with integrated antenna elements similar to its predecessor, the Cisco 1130AG. This access point includes six integrated Omni-directional antenna elements segmented into three discrete elements for each frequency band. Ideal for indoor environments, this access point has a low-profile design that blends into enterprise, health care or educational environments seamlessly. Featuring two integrated 802.11n Draft 2.0 radios, the AP can simultaneously serve 802.11b/g/n and 802.11a/n clients in the 2.4GHz and 5GHz bands, respectively. In addition to a Gigabit Ethernet uplink, the 1140 also supports full functionality while being powered by 802.3af Power Over Ethernet.

http://www.cisco.com/en/US/docs/wireless/technology/1140/deployment/guide/1140dep.html

Hall of Fame Super Blue

## 1140 and WCS Antenna Angle Property

`The Cisco Aironet 1140 series access point caters to indoor environments that demand outstanding wireless performance while blending in seamlessly with the aesthetics of the enterprise environment. In order to meet these set of requirements, the Aironet 1140 was designed with integrated antenna elements similar to its predecessor, the Cisco 1130AG. This access point includes six integrated Omni-directional antenna elements segmented into three discrete elements for each frequency band. Ideal for indoor environments, this access point has a low-profile design that blends into enterprise, health care or educational environments seamlessly. Featuring two integrated 802.11n Draft 2.0 radios, the AP can simultaneously serve 802.11b/g/n and 802.11a/n clients in the 2.4GHz and 5GHz bands, respectively. In addition to a Gigabit Ethernet uplink, the 1140 also supports full functionality while being powered by 802.3af Power Over Ethernet.`

Hi Abhishek,

Your response was taken from the Data Sheet of the 1140.  Unfortunately I do not see how your response is valid.  Could you please point out where is the relevant statement about the 1140's antenna radiating patterns and how you map them to WCS?

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