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Additionally consider, just because something works
on the ground doesn;t mean that it will work up in the air, for two
reasons.
1) When operating outside of specs, it may take a
period of time before the equipment starts to fail and flaws show
up.
(heat build up, or stress on
devices)
2) Interferences stretched along the tower
structure for 250 feet, may be different than interferences that exist in a coil
at the ground.
Take note, that even though COILS can degrade
signal, I've tested 500 feet cables on the ground in coils with Trango
successfully, but up on a roof, failures at 200 feet in some
circumstances.
So...
first, do the math.
second, test on ground.
third, prey that it will works after its been
installed on the tower. :-)
The most important lesson, is to rule out unknowns
before you install on the tower.
Test IP configurations of radios from laptop. Use
patch cables that will be used when testing live. Work with a set of
knowns.
So you don't have to Climb just to rule something
out. And always test before you climb down.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless
Broadband
----- Original Message -----
Sent: Friday, September 15, 2006 12:48
PM
Subject: Re: [WISPA] MT power supplies
THE SOLUTION
I just looked at that Resources for a 532. 2
Ports are VIA Technologies. The 3rd is Integrated Device Technologies.
Scott Reed
Owner
NewWays
Wireless Networking
Network
Design, Installation and Administration
www.nwwnet.net
---------- Original Message
-----------
From: Brian Rohrbacher <[EMAIL PROTECTED]>
To:
WISPA General List <[email protected]>
Sent: Fri, 15 Sep 2006
09:20:58 -0400
Subject: Re: [WISPA] MT power supplies THE SOLUTION
> I started with.... RB 532 on tower. It
comes down 265 feet to poe
> injector to router. Major packet
loss.
> 2) switched RB 532 out. No change.
> 3)
Created test setup on ground with "bad board" and it looked fine.
> (from laptop--6ft cable----poe----265 ft---RB)
> 4) Blamed it
on the cable, and got a cable certifier from a friend.
> 5) Right
before climb, I re did the test setup on the ground. This
> time
I plugged the 265 feet into the actual router instead of my
> laptop.
The problen was back. (I was bummed)
> 6) One final
test. Get another 265 foot cable. I used 265ft for power
>
and 265ft for data to eth 2 or 3.
> Problem solved.
> I can only
speculate that the chipset on RB 532 poe port is diffrent
> from the
chipset on eth 2/3.
> And for whatever reason it was not compatable
with cable, hardware,
> ect.....setup.
> I may never know for
sure why, but I have the workaround. Good enough
> for me.
>
> FWIW I ended up pulling 2 new cables (all 3 certified
fine). I used
> the original cable for data (it has "real"
shield) I used my new 2
> (cheapo foil shield) for power and
slapped the other into eth3 for the
> heck of it.
>
>
Lessons learned for next time.
> Measure cable, crimp, and power up on
ground using the EXACT same
> everything as what the final deployment
will have. And then test.
>
> Hope that sums it all up.
>
> Ok to directly answer your question. Yes. I did
this on the ground
> test unit.
>
> Brian
>
Rohrbacher
>
> Paul Hendry wrote:
>
> >Brian,
> >
> >Just out of interest, did you try running both
power and data over the new
> >cable and did you still see the same
issue?
> >
> >P.
> >
> >-----Original
Message-----
> >From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
> >Behalf Of Brian Rohrbacher
> >Sent: 15 September 2006 02:43
> >To: WISPA General List
> >Subject: Re: [WISPA] MT power supplies THE SOLUTION
> >
> >First off. I'm back to a 48v 420mA power supply.
>
>To the solution.
> >I ran another cat5 up the tower and plugged
it into the RB 532.
> >Now I have one cable for poe and one cable
for data, and it all works fine.
> >And check this. My
headache went away as soon as the problem did. :)
> >Problem
solved. NEXT!
> >
> >Brian
> >
>
>Tom DeReggi wrote:
> >
> >
> >
> >>Amps don't mean a thing without disclosing Volts, Consider
Watts
> >>instead. 1300mA at 3V is much different than 1300mA at
18V.
> >>The mPCI slot (SR5) is 3.3V. Power to the
Motherboard is from
> >>12-48V. W=V*A
> >>
>
>>Tom DeReggi
> >>RapidDSL & Wireless, Inc
>
>>IntAirNet- Fixed Wireless Broadband
> >>
>
>>
> >>----- Original Message ----- From: "Mark McElvy"
<[EMAIL PROTECTED]>
> >>To: "WISPA General List"
<[email protected]>
> >>Sent: Wednesday, September 13,
2006 8:19 AM
> >>Subject: RE: [WISPA] MT power supplies
>
>>
> >>
> >>I am surprised no one has
mentioned this. I looked up power consumption
> >>on the SR5 and
it shows 800 to 1300 mA each. You state your power supply
> >>is
700mA. I did not look up power consumption for the RB532 but I would
>
>>think you would need at least a 3A supply.
> >>
>
>>-----Original Message-----
> >>From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>
>>Behalf Of Brian Rohrbacher
> >>Sent: Tuesday, September
12, 2006 11:51 AM
> >>To: WISPA General List
>
>>Subject: Re: [WISPA] MT power supplies
> >>
>
>>So, does anyone know if it looks like I would be fine on the power
side
> >>of things?
> >>I have tweaked the ethernet
port settings for no gain.
> >>
> >>Next step is to
get climbing 280ft to replace board, but I'd like to
> >>confirm
power first.
> >>
> >>Brian
> >>
> >>Brian Rohrbacher wrote:
> >>
> >>
> >>
> >>>I have a RB 532 on 300
foot of cat 5 with 2 sr5.
> >>>I'm using poe 48v .700a power
supply.
> >>>I'm seeing weirdness.
> >>>
> >>>Do I have enough "juice"
> >>>
>
>>>Brian
> >>>
>
>>>
> >>
> >>
> --
> WISPA Wireless List: [email protected]
>
>
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