Network measurements over a sevendecade freq and 100 db amplitude range, outputs are phase in degrees and amplitude in db or dbv, 200 micro volts to 20 v rms, input, impedance 1 mohm, protection porm 50 vdc, 25 v rms, operating power 115 or 230 v porm 10 pct, 48 to 440 hz, 40 va, o/a dim. 425 mm lg, 337 mm w, 88 mm h