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At 05.11 06/03/00 , you wrote:
>Roberto:
>
>The resistor that needs to be replaced on the DM-3500V is actually
>labeled R4.
>(R4 is 24K) The voltage reference high (pin 36) is calibrated by
>R4/VR1.  The trim pot VR1
>is calibrated in comparison with the input voltage thru R2.
>
>brad

Actually I have R1/R4 (24K / trimpot 1K) in series connected to pin 35 REF LO
at one end, to +9V and Pin 1 at the other side.
pin 36 is connected to the variable end of the trimpot R4.

At what I understand I have change R1 (24K) whith a pot of about 250k
according to
roger@ph*.mc*.ca* web site, or 50K acordind to the book, wich are
your expirience?.

Thanks Roberto
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