[Soekris] Max distance for PoE
chuck+soekris at 2003.snew.com
Mon Dec 1 17:19:47 UTC 2003
Quoting Christian van den Bosch (cbosch at 4c.ucc.ie):
> On Sat, 29 Nov 2003, Chuck Yerkes wrote:
> > At 15VDC, your Soekris won't come up.
> I beg to differ. I have several running on a 15V supply on around 30
> metres of cable :) Rumour has it they'll run on anything down to 11V.
| Voltage drops over distance using wires. My Pocket Ref isn't handy
| and I never remember the numbers, but at 200M, you lose maybe 4 or
| 6 volts? (don't hold me to those numbers). At 48VDC, that leaves you
| with 42 volts. Not a problem. At 15VDC, your Soekris won't come up.
And I wasn't totally clear. At 48VDC with a 6V drop, you're ok.
At 15VDC [before your 6V drop], you're not ok. You have 9VDC which
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