[Soekris] What voltage can a 4501 take?

[Cain Hopwood]

Andy,

I had a very similar issue with one of my installations with a 4521. I was
using a 500ma plugpack  running at 12 volts, which worked fine on the bench.


But running it over 20 odd metres of CAT5 caused a couple of volts drop,
which was within limits, but it meant that the 4521 had to draw more
current, which pushed it beyond the plugpack's limits.

A 2A PSU solved my problems.

The funny thing is that it would run for 3 or 4 hours and then suddenly drop
out.

L&K Cain

-----Original Message-----
From: soekris-tech-bounces+cain=epage.com.au at lists.soekris.com
[mailto:soekris-tech-bounces+cain=epage.com.au at lists.soekris.com] On Behalf
Of Andy Holyer
Sent: Wednesday, 29 September 2004 7:57 PM
To: wim at kd85.com
Cc: Soekris-tech list
Subject: Re: [Soekris] What voltage can a 4501 take?


On 28 Sep 2004, at 19:52, Wim Vandeputte wrote:

>
> Dear Andy,
>
> On Tue, Sep 28, 2004 at 09:11:52AM +0100, Andy Holyer wrote:
>> We have a customer whose box is roof-mounted (to minimize antenna 
>> cable
>> length), and it's powered using POE. He's experiencing connection
>> losses which we diagnose is because his current PSU is not supplying a
>> good 12v over the ethernet run.
>
> How is this POE working? Are you using a seperate splitter at both ends
> so that the power is then beeing piped into the power connector?
>
Until I go on site, I have no way of knowing. I've seen some boxes 
using "true" POE, some using 2 splitters

> You do realise the 4501 does not support POE, only the 4511, 4521 and 
> 4526 do.
>
It's probably one of those, then, again i can't confirm model until I 
see the box on site.

>> Can I put in a higher voltage PSU without a risk of blowing something?
>> I'm expectin to lose a few volts over the length of the cable run, but
>> better safe than sorry. What voltage range can a Soekris board take
>> safely?
>
> You need to check the web page for each board individualy:
>
> 4501:  6-20V DC, max 10 Watt (no POE)
> 4511: 11-56V DC, max 10 Watt
> 4521: 11-56V DC, max 14 Watt
> 4526: 11-56V DC, max 10 Watt
> 4801:  6-20V DC, max 15 Watt (no POE)
>
A good bit more than 12, then. I'm tempted to try 24v
---
Andy Holyer, Systems Administrator
Hedgehog Broadband, 11 Marlborough Place Brighton BN1 1UB
08451 260895 x 241

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