AA38-300 Intercom System | Local ICS Loop

Features

• Intercom functions for eight users
• Selectable NAT ICS od 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:
0.55 lb (0.25 kg)

Dimensions (H x D x W):
1.31 x 4.60 x 4.50 in (33.3 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:
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:
8 mic channels
1 ICS tie channel
1 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:
8 headsets outputs

Rated Level:
headset output 7.7 VRMS or 100 mW (20 dBm) into 600Ω

Output Impedance:
30Ω ±10% (headset output)

Circuitry Type:
balanced output for high common mode noise rejection

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)