# DAC datasheet term confusion: FS-1LSB

In the Digital to analog converter HP16BME, I keep stumbling into " +FS - 1LSB " and I'm not sure what it means.

I mean, I still don't know the exact scale value because I don't know what FS stands for and what they mean by 1LSB in this example

• The DAC is set up so that full scale voltage corresponds to an input of 0x10000 and not 0xFFFF. So the highest voltage it can produce is slightly less than 10 V. – tomnexus Jun 29 '15 at 8:10