Northern Airborne Technology AA37 - Manual (Page 8)

AA37 Series Alerting System Manual SM39 Rev. 4.00
Page 1-2 Nov 10, 2003
ENG-FORM: 800-0103.DOT
Output Signals 2 headset outputs
Output Level into 600
Ω
100%
30 mW
50% 15 mW
33% 10 mW
Output Level into 150
Ω
100%
11 mW
50% 6 mW
33% 4 mW
Output Impedance
100% output 900 Ω ±10%
50% output 1.6 k Ω ±10%
33% output 2.1 k Ω ±10%
Tone Frequency
Alert 1 & 2 Adjustable tone from 750 Hz to 2.3 kHz.
Alert 2 Adjustable rate from 1 Hz to 20 Hz.
Alert 3 (AA37-212 only) Adjustable tone and rate as above with
duration of 1 to 3 seconds.
Audio Noise Level
> 60 dB down from rated output.
Crosstalk < -60 dB output to output.
1.4.2
Physical Specifications
Height 31.7 mm (1.25 inches)
Length
111.7 mm (4.4 inches)
Width
114.3 mm (4.5 inches)
Weight
AA37-001 and -002
220 g (0.49 lb)
AA37-212 230 g (0.51 lb)
Mounting
Bulkhead mount with four 10-32 screws.