User Manual - Medical Supplies

24 Standards, Specifications, and Accessories Welch Allyn AM 282 AudiometerAccuracySignal to Noise Ratio:125 to 4000 Hz, ±3 dB6000 to 8000 Hz, ±5 dB>70 dBTone TypeRise/Fall Time:Continuous:Pulsed:FM:Capacity:20-50 msecSteady when present bar depressed2.5 pulse/sec±5%, 5 Hz, Triangular modulationMinimum of 10 hours of power for either battery type.Operating Temperature 59° F to 104° F (15° C to 40° C)Head setTelephonics External Headset Earphones with Type 51 Cushions (60 ohm impedance).HeadbandExerts a force between 4 and 5 N when the earphonesare separated by 145 mm.PowerLine Voltage:Consumption:Battery:The AC-DC adapter is a universal auto-ranging with an input voltage rangeof 90 - 264V at 47 - 63 Hz.1.5 WattsTypes: 5 each Alkaline AA 1.5V 5 each RechargeableNicad or NIMH AA 1.2VNoteThe instrument does not provide a recharging circuit for these batteries.Capacity:Minimum of 10 hours of power for either battery type.A Low Battery icon will display when there isapproximately 1 hour of power remaining.EnvironmentalOperating Temperature 59° F to 104° F (15° C to 40° C)NoteWarm-up time is required if storage temperature is different from room temperature.Ambient Pressure:Warm-up Time:98 kPa to 104 kPa10 minutes for instruments stored at room temperature