Hi  Geoffrey,

The input range is +10 to -10VDC. This corresponds to 0 to +32767 and 0 to -32768 A/D 
counts. So you can think of the output as 15 bits + one sign bit.

Regards,
Larry Cochrane
Redwood City, PSN

On 5/4/2011 1:17 PM, Geoffrey wrote:
> Hello PSN,
>
> Can anyone tell me if Larry's 16 bit boards
> go 16 bits plus or minus or if they go
> 15 bits plus or minus ?
>
> It will make a difference in calculating volts per count ?
>
> 2^16 = 0 to 65535 with the circuitry somehow giving a full 16 bits both plus or minus
> 2^16 = 0 to 32767 with the msb as a sign bit for negative voltages
>
> I could test but know someone else already knows.
>
>
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