Hi mosajii,
The problem was that the scratchpad would not keep the control bits, which had been set, once the conversions were been made. On the DS2438 you must clear bit.3 of the scratchpad to enable the Vad. This bit should stay clear until the user sets it to enable Vss as A/D. Instead the scratchpad would reset to $0F after all conversions and read back of the scratchpad. This means I must set the control bit on each loop rather than only once as it should be. The devise is collecting data as it should. It is just irritating to have to reset the scratchpad on each loop. Maxim never responded to my inquire about this behavior.
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