The Hioka 8802 Memory Hi Corder is a waveform and phenomena recorder having unique features and functions not offered on other portable instruments. The 8802 is a multichannel recorder capable of measuring and recording digital signal input through a logic Probe in additon to regular analog phenomena 8802 01 features 8 logic channels and 3 analog channels, and 8802 02 has 16 logic channels and 2 analog channels.