If the photograph is clicked, it grows.

AA501 Audio Analyzer Frequency:10Hz-100KHz LevelMeter/Distortion resDist<0.0018%(-95dB) Noise<3uV RMS 3-1/2digits Filter:400Hz,30KHz,80KHz,Acurve Level 200uV-200V 10range Unit:Volt,dBm,ratio,Ref AutoRange Input:100Kohms Monitor-out Function-out AUX-filter input Distortion Type 0.0014% (1KHz 0dBm 20KFilter ON ) SG505 Ultra Low Distortion Generator Frequency:10Hz-100KHz Sin Distortion 0.0003%(type) Output max 6Vrms(open) -60-+10dBm(600ohms) 10dBstep+Vernier Syncout200mV Dist<0.0005% Measure 0.00070% at 0dBm (VP7723A 20K filter ) TM503 3 slot plug-in Unit Power Switch clack

TM503