NXU-2B Operations Manual
1-3
Interoperability Now!
1.4
Specifications
Table 1-1
Specifications
RX Audio Input
Input impedance
Balanced 47k ohms, transformer coupled, 600 ohm selectable
Input Level
Incoming signals adjustable from -26 to +10 dBm to set 0 dBm nominal input;
+15 dBm clipping. +20 dB boost configurable
Frequency Response
10 Hz to 3600 Hz +/- 2dB.
TX Audio Output
Output Impedance
Balanced 600 ohms, Transformer Coupled.
Output Level
Adjustable from –26 to +10 dBm, 0 dBm nominal factory default; +15 dBm
clipping into a 600-ohm load.
Frequency Response
10 Hz to 3350 Hz +/- 2dBm.
Distortion
0.5% or less (excepting Vocoder).
COR & AUX Input
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.
PTT and AUX Output
Output Type
Open drain, 47k ohm pull-up to +5V, PTT relay output selectable
Maximum Sink Current
100 mA for open drain, 300 mA for PTT relay
Max Open Circuit Voltage
+60 VDC for open drain, +100 VDC for PTT relay
Serial Interface
Interface Type
RS-232, Asynchronous, Full Duplex.
Baud Rates
300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps.
Connector
DB-9 Male, Standard PC/AT DCE Pinout.
Network Interface
Interface Type
10/100BASE-T Ethernet, 10 or 100 Mbps; RJ-45 Connector.
Protocols
Audio and status-UDP, RS-232- TCP.
Audio Vocoder
Selectable, 13, 16, 24, 32, 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 (DB15 Female), Serial, Network, and Power Connectors.
Input Power (12 VDC Nom)
+11 to +15 VDC @ 0.5A max. Wall cube supplied operates on 100-240 VAC.
Power Connector
Coaxial Jack, 2.5 mm ID, 5 to 5.5 mm OD; Center Pin Positive; Reverse
Polarity Protected.
Size and Weight
1.36”H x 6.50”W x 6.50”L (3.45 x 16.5 x 16.5 cm). 1.2 lbs. (0.5kg).
Temperature
Operating: -20 to +60 degrees C. Storage: -40 to +85 degrees C.
Humidity
Up to 95% @ 55 degrees C.
Summary of Contents for NXU-2B
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