Local ICS Loop Intercom / 8 Users / DB Systems Tie Line

The AA38-380 local ICS loop provides intercom functions for eight 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. The AA38-380 model incorporates a DB Systems Tie Line.

• Intercom functions for sixteen users
• Selectable NAT, ICS, or Andrea Tie Lines
• ICS volume, AUX volume, and VOX controls
• Live and VOX Intercom modes
• VOX operation LED and 28 VDC power LED

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

Input Voltage:
27.5 VDC with reverse and over-voltage protection, 32.2 VDC max

Input  Current:
0.66 A, max @ 27.5 VDC

Input Signals:
8 mic channels
1 ICS tie channel
1 aux input channel

Input Audio Level:
250 mVRMS, mic inputs
0.34 VRMS, NAT ICS tie input
2.8 VRMSm, Andrea ICS tie input
2.5 VRMS, Aux input

Input Impedance:
150Ω ±10%, mic input
1.6kΩ ±10%, NAT ICS tie input
250Ω ±10%, Andrea tie input
940Ω ±10%, aux input

Input Circuitry Type:
all mics are single-ended inputs
tie lines are single-ended inputs
aux line is single-ended
better than -60 dB input-to-input crosstalk (mic to aux to ICS)

Output Signals:
8 headset outputs

Rated Output Levels:
headset output 7.7V rms or 100 mW (20 dBm) into 600Ω

Output Impedance:
30Ω ±10%, headset output

Output Circuitry Type:
balanced output for high common mode noise rejection

Frequency Response:
<3 dB from 350 Hz to 3,000 Hz, intercom
<3 dB from 350 Hz to 3,000 Hz, RX
<10% THD @ rated power output, audio noise level
<10% /3 dB max of rated output power at 400% and 75% of rated load, output regulation

Operating Temperature:
-30°C to 55°C

Survival Temperature:
-55°C to 85°C

Humidity:
95%

Approval:
FAA TSO-C50c, RTCA/DO-170 Class 1a)