[Nut-upsdev] IVT SCD support status

Arnaud Quette aquette.dev at gmail.com
Wed Sep 23 14:20:14 UTC 2009

Hi Rainer,

2009/9/22 Rainer Fuegenstein <rfu at kaneda.iguw.tuwien.ac.at>

> AQ> is that expected? remember that I've not followed the initial thread,
> nor
> AQ> had time to do so...
> no. every time I connect the serial cable from the SCD to a serial
> port on a computer, the current drops by about 1A (meaning that
> suddenly there's a load of about 12W). this "virtual" load disappears
> as soon as the serial cable is disconnected.
> In the meantime I figured out that this can't be a ground loop. even
> if there's just battery / SCD / PC (solar panel and ethernet cable
> disconnected), the current drops on connection of the serial cable.
> I want to run some more tests with different ports / cables just to be
> sure before I contact IVT again.

ok, let us know the results...
btw, do you have an LCD display to double check the data?
also, have you seen and tried Arjen's advice on set_dtr() and set_rts()

AQ> happy to see the first NUT SCD working ;-)
> hopefully it won't stay the only one :-)

for sure ;-)

Linux / Unix Expert R&D - Eaton - http://www.eaton.com/mgeops
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://www.debian.org
Free Software Developer - http://arnaud.quette.free.fr/
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