AA38 Aircraft Intercom System 16 User Local ICS Loop

Product Description

The AA38-301 local ICS loop provides intercom functions for sixteen users in HOT MIC or VOX mode operation. A switch-selectable NAT or Andrea tie line allows connection to multi-unit systems. An AUX input allows for a radio or music to be connected.

Specifications

• Weight:
  1.01 lb (0.45 kg)
• Dimensions (H x D x W):
  2.31 x 4.60 x 4.50 in (58.7 x 116.8 x 114.3 mm)
• Mounting:
  bulkhead mount with four 10-32 screws
• Material/Finish:
  5052/H32 brushed aluminum with chromate conversation finish
• Connectors:
  Two filtered male 37-pin D-subminiature, connector with jack posts
• Operating Temperature:
  -30°C to 55°C
• Survival Temperature:
  -55°C to 85°C
• Altitude:
  25,000 ft max.
• Humidity:
  95%
• Input Voltage:
  27.5 VDC with reverse and over-voltage protection (32.2 VDC max.)
• Input current:
  0.66 Amps max @ 27.5
• Number of Input Channels:
  16 mic channels 2 ICS tie channel 2 AUX input channel
• Input Audio Level:
  250 mVRMS for mic inputs 0.34 VRMS for NAT ICS tie input 2.8 VRMS for Andrea ICS tie input 2.5 VRMS for AUX input
• Input Impedance:
  150Ω ±10% for mic inputs 1.6kΩ ±10% for NAT ICS input 250Ω ±10% for Andrea tie input 940Ω ±10% for AUX input
• Circuitry Type:
  all mics are single-ended inputs tie lines are single-ended inputs aux line is single-ended input better than -60 dB input-to-input crosstalk (MIC to AUX to ICS)
• Number of Output Channels:
  16 headsets outputs
• Rated Level:
  headset output 7.7 VRMS or 100 mW (20 dBm) into 600Ω
• Output Impedance:
  30Ω ±10% (headset output)
• Intercom Frequency Response:
  <3 dB from 350 Hz to 3,000 Hz
• Receive Frequency Response:
  < dB from 350 Hz to 6,000 Hz
• Distortion:
  <10% THD @ rated power output
• Audio Noise Level:
  >60 dB down from rated output (without signal)
• Output Regulation:
  <10% distortion / ∆3 dB max. of rated output power at 400% and 75% of rated load
• Approvals:
  TSO-C50c (RTCA/DO-170 Class 1a)

Product Codes

• Mfr Part No
  AA38-301
• ECCN
  7A994
• SCHEDULE B CODE
  8536.69.4040
• TSO
  C50c