Specifications : 1381 General Radio reNEWed by Leasametric Random-Noise Generator : Random-Noise Generator, Generates truly random noise from a semiconductor source, Flat down to 2 Hz and is intended for random-vibration tests and for general-purpose use in the audio and sub-audio range, The upper frequency limit (@3 dB) can be switched to 2,5 or 50 kHz, Output level is adjustable from below 3 mV to 3 V rms (600 Ω impedance).
