TheAA38-300local 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.
规格：
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)
特征：
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
