Northern Airborne Technology AA38-5xx - Manual (Page 5)

AA38-5xx, -6xx, -7xx and -8xx Series Local ICS Loop Manual
SM54 Installation and Operation Manual
Section 1 Rev: 1.01 Issue 4 Page 1-2
ENG-FORM: 800-0116.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply
Type DC
Linear
Input Voltage
Typically +24.8 to +30.3 Vdc
Nominal +27.5 Vdc (with reverse & over voltage protection)
Emergency +20.0 Vdc
Input Current 0.45 A Max. @ +27.5 Vdc (AA38-501, -503, -504, -505)
0.80 A Max. @ +27.5 Vdc (AA38-502, -602)
0.41 A Max. @ +27.5 Vdc (AA38-601, -603)
0.35 A Max. @ +27.5 Vdc (AA38-703)
0.90 A Max. @ +27.5 Vdc (AA38-802)
Input Signals
Quantity
8 MIC channels
(AA38-502, -602 and -802) 2 ICS tie channels, one for each group of 4 users
2 AUX RX channels, each driving 4 users
Quantity
4 MIC channels
(except AA38-502, 1 ICS tie channel
-602 or -802) 1 AUX RX channel
Audio Level
250 µVrms for MIC inputs (AA38-5xx except -505, -7xx models)
1.1 mVrms for MIC inputs (AA38-505 model only)
250 mVrms for MIC inputs (AA38-6xx models only)
340 mVrms for NAT ICS tie input(s)
2.8 Vrms for Andrea ICS tie input(s) (AA38-5xx and -6xx models)
2.5 Vrms for AUX RX input
1.2 Vrms (typical) for SuperNAT ICS (AA38-7xx and -8xx)
Circuitry Type
Tie lines are single ended inputs
All AA38-5xx model MICs are differential inputs
All AA38-6xx model MICs are single ended inputs
All AA38-7xx model MICs are differential inputs
All AA38-8xx model MICs are balanced inputs
All AUX RX inputs are balanced
Keylines
4 ICS PTT active low (AA38-501, -504, -505, -601)
8 ICS PTT active low (AA38-502, -602, -802)
4 ICS PTT active low (AA38-503, -603, -703)
4 TX PTT active low