Audiometer PDD-401 PC based screening audiometer for the air conductive examination of hearing system • 645-1 standard IEC • Type 4 and Type 5 Class • ISO 7029:2000 Statistical distribution EN of hearing thresholds as a function of age • Interpretation by PTA (Pure Tone Average) • Interpretation by Grade of Hearing Impairment • System integration with Piston spirometers • System integration into information networks Health Level 7 (USA) Geräte Daten Träger (Germany) • port for PC connection USB • External power supply not required • portability with a laptop PC Full Database management system...