Hi Ian/Paul,

A function only decoder need to have a resistor (47k?) connected between one
output of the sprog and the programming track, otherwise it can't recognise
the decoder is there. It should be able to programme it though...

If you've aready tried that then you may have an un-happy decoder.

Luke


>From: Ian Birchenough <ian.birchenough@...>
>Reply-To: sprog-dcc@...
>To: sprog-dcc@...
>Subject: Re: [sprog-dcc] SPROGII - DecoderPro, and TF-4 (digitrax),,,, how
>done it??
>Date: Tue, 14 Aug 2007 21:40:53 +0100
>
>Phil,
>some motors don't draw enough current for the ACK to be detected by
>SPROG/Decoder Pro. You may need to hold the wheels or some such to
>increase the current draw.
>Ian
>
>
>
>In message <f9skl0+kst9@eGroups.com>, Phil Dunlop
><pndunlop@...> writes
> >
> >Good Day all;
> >
> >I have the above set up, and just recently, like yesterday, tried for
> >the first time to program a digitrax TF-4 function only decoder.
> >What a dismal failure, sigh.
> >
> >I've never had a problem with this set up before, done Tsunami,
> >Loksound, Soundtraxx, and Digitrax motor control decoders, all with
> >no problem.
> >
> >Don't know if it's a sprog or decoderpro problem. I tried direct to
> >decoder connections, and various resistor ideas trying to simulate a
> >motor load, etc. Decoderpro reports an error "stopping due to no
> >locomotive detected". It's pretty adamant about it. It's not the
> >decoder, I was able to program one on a digitrax programming track.
> >Did Digitrax design a decoder that only works on their system in
> >spite of what the instructions say? Am I doing something stupid??
> >Any ideas would be appreciated.
> >
> >Cheers
> >phil d
> >
> >
> >No virus found in this incoming message.
> >Checked by AVG Free Edition.
> >Version: 7.5.476 / Virus Database: 269.11.17/951 - Release Date:
> >13/08/2007 10:15
>
>--
>Ian Birchenough

_________________________________________________________________
Booking a flight? Know when to buy with airfare predictions on MSN Travel.
http://travel.msn.com/Articles/aboutfarecast.aspx&ocid=T001MSN25A07001