This standard defines specifications and describes test methods for measuring the performance of electronic digitizing waveform recorders@ waveform analyzers@ and digitizing oscilloscopes with digital outputs. The standard is directed toward@ but not restricted to@ general-purpose waveform recorders and analyzers. Special applications can require additional manufacturer information and verification tests not covered in this standard. IEEE Std 1057? has many similarities to IEEE Std 1241?-2010 [B24]@ which applies to analog-to-digital converters (ADCs).1 However@ IEEE Std 1057 shall be used for waveform recorders@ and IEEE Std 1241-2010 shall be used for ADCs.