2. Specifications
Temperature range:
–40 to 80 °C
Power supply:
9 to 17 VDC, reverse polarity protected
Current drain at 12 VDC: 96 mA (normal operation, no external connections)
~1 mA (each serial port)
~25 mA (Ethernet port)
~20 mA (GPS on)
144 mA (all serial ports, USB console, Ethernet connected, GPS on)
RX radio voltage
(data out level):
300 to 1200 mV peak-to-peak
TX radio voltage
(data in level):
100 to 1200 mV peak-to-peak,
configurable in 0.5 dB steps
Clock Synchronization:
GPS or NTP
Clock drift:
2 ppm (0 to 40 °C); 3.5 ppm (-40 to +80 °C)
ALERT2:
Compatible with NHWC ALERT2 AirLink v1.1, MANT v1.1, API v1.0
Supports ALERT2 API input, and ALERT2 API and ASCII output
Implements proposed protocol extension for
Configurable
Forward Error Correction
,
Encryption and Authorization
,
and
End-to-End Reliable Datagram Service
Complete address list support: maintain pass or reject lists,
based on source or destination address
Interfaces
Power:
2 pin, screw terminal, polarity protected
RS-232:
3 ports, line-level, custom 3-pin cable, 1200 to 115200 bps
Ethernet:
10/100 MB (fixed or dynamic (DHCP) addresses)
Storage:
microSD expandable storage that records all ALERT2 traffic in
ASCII format (N, P, S, C messages); ships with at least 8 GB USD card
LEDs:
Power, Bit Sync, Frame Sync, GPS On, Clock Sync, Tx Radio Power,
Transmit, Serial 1, Serial 2, Serial 3
AL205R / AL205B ALERT2 Repeater / Base
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