Sorry, missed the 'Function Only' comment.
Ian

In message <BAY134-F225BB6A87DE1CDFEB1099891DD0@...>, Luke Stevens
<luke_rail@...> writes
>
>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
>> >
>> >
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>> >13/08/2007 10:15
>>
>>--
>>Ian Birchenough
>
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--
Ian Birchenough