Welch Allyn AM282 Audiometer - User Manual - Manual (Page 28)

24 Standards, Specifications, and Accessories Welch Allyn AM282 Audiometer
Tone Type
Head set
Power
Environmental
Accuracy 125 to 4000 Hz, ±3 dB
6000 to 8000 Hz, ±5 dB
Signal to Noise Ratio: >70 dB
Rise/Fall Time: 20-50 msec
Continuous: Steady when present bar depressed
Pulsed: 2.5 pulse/sec
FM: ±5%, 5 Hz, Triangular modulation
Capacity: Minimum of 10 hours of power for either battery type.
DD45 External Headset Earphones with Type 51 Cushions (10 ohm impedance).
Headband Exerts a force between 4 and 5 N when the earphones
are separated by 145 mm.
Line Voltage: The AC-DC adapter is a universal auto-ranging with an input voltage range
of 90 - 264V at 47 - 63 Hz.
Consumption: 1.5 Watts
Battery: Types: 5 each Alkaline AA 1.5V 5 each Rechargeable
Nicad or NIMH AA 1.2V
Note
The 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 is
approximately 1 hour of power remaining.
Operating Temperature 59° F to 104° F (15° C to 40° C)
Note
Warm-up time is required if storage temperature is different from room temperature.
Ambient Pressure: 98 kPa to 104 kPa
Warm-up Time: 10 minutes for instruments stored at room temperature
Storage/Shipping: -30° F to 149° F (-34° C to 65° C)
Battery Storage: -4° F to 105° F (-20° C to 40° C)
Humidity: 15% to 95%