A Appendixes
558 Keysight U8903B User’s Guide
Units for digital audio measurements
Table A-44 Units for digital audio measurements
Unit Description
FFS Fractional of Full Scale
%FS Percent of Full Scale
dBFS Decibels relative to Full Scale
LSB Least Significant Bit
FS/Vrms Ratio between cross-domain input and output levels measurements (analog input and digital output)
Vrms/FS Ratio between cross-domain input and output levels measurements (digital input and analog output)