ARA-1 Operations Manual
1-10
INTEROPERABILITY NOW
1.9
Specifications
Table 1-1
Specifications
Radio RX Audio Input
Input Impedance
Balanced 47k ohms, transformer coupled
Input Level
Incoming signals adjustable from –30 to +11 dBm to set 0 dBm nominal input;
+15 dBm clipping; +20 dB boost configurable
Frequency Response
10 Hz to 3600 Hz +/- 2dB
Radio TX Audio Output
Output Impedance
Unbalanced 600 ohms, AC Coupled
Output Level
Adjustable from –30 to +11 dBm, 0 dBm nominal factory default; +9 dBm
clipping into a 600 ohm load
Frequency Response
10 Hz to 3350 Hz +/- 2dBm
Distortion
0.5% or less (excepting Vocoder)
Radio COR and AUX Inputs
Input Impedance
47k ohm pull-up to +5V
Polarity
COR: Selectable active low or active high; AUX Inputs: Active low
Threshold
+2.5V nominal
Protection
Up to + 100 VDC
Radio PTT and AUX Outputs
Output Type
Open drain, 47k ohm pull-up to +5V
Maximum Sink Current
100 mA
Max Open Circuit Voltage
+60 VDC
Network Interface
Interface Type
10/100BASE-T Ethernet, 10 or 100 Mbps; RJ-45 Connector
Protocols
SIP, SDP, RTP, STUN
Audio Vocoder
Selectable, 13 or 64 Kbps data rate
General/Environmental
Programming/Configuration
Web, Telnet, or RS-232 Interface
Front Panel
Power, Link Active, Channel Active, and Audio Level LEDs
Rear Panel
Audio/Data, Serial, Network, and Power Connectors
Audio/Data Connector
DB-15 Female
Input Power (12 VDC Nom)
+11 to +15 VDC at 0.5A max. 12VDC (wall-cube supplied)
Power Connector
Coaxial Jack, 2.5 mm ID, 5 to 5.5 mm OD; Center Pin Positive; Reverse
Polarity Protected
Size and Weight
1.3”H x 8.3”W x 6.7”D (3.3 x 21.1 x 17.0 cm); 1.1 lbs. (0.5kg)
Temperature
Operating: -20 to +60 degrees C; Storage: -40 to +85 degrees C
Humidity
Up to 95% at 55 degrees C
Regulatory Compliance
FCC part 15
RFI Emissions for USA