2 input channels, input impedance 1 megohm in parallel with 50 pf, input range 50 mv to 50 v full scale in 1, 2, 5 sequence; power 115 or 230 vac porm 10 pct., 50 to 400 hz, 50 w; size 5.14 in. H, 16.75 in. W, 15.00 d; maintenance kit includes extender card, fuses, allen wrench; dual output; 10 bit amplitude resolution