Appendix A
35
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S
PECIFICATIONS
A.1. HPT404BT UHF Modem Specifications
The following sections provide specifications for the modem and its internal components.
A.1.1. General Radio Specifications
Table A-1. General Radio Specifications
Parameter
Specification
Operating Frequency Range
406 - 470 MHz (EU)
406.1 - 470 MHz (USA)
406.1 - 430;450-470 MHz (Canada)
Channel Spacing
25/12.5/6.25 kHz (USA, Canada)
25/20/12.5 kHz (EU)
Data Rate (25/20/12.5/6.25 kHz
Channel Spacing)
9600/7500/4800/2400 bps – DBPSK/GMSK
19200/15000/9600/4800 bps – DQPSK/4FSK
28800/22500/14400/7200 bps – D8PSK
38400/30000/19200/9600 bps – D16QAM
System Gain for DBPSK
modulation (Antenna gain is not
included)
161 dB (for 25 kHz Channel Spacing)
163 dB (for 12.5 kHz Channel Spacing)
164 dB (for 6.25 kHz Channel Spacing)
Roaming Speed for DBPSK modulation 75 mph / 120 km/h
Modulation
GMSK/4FSK/DBPSK/DQPSK/D8PSK/D16QAM
Nominal Impedance
50 Ohms
End to End delay
60 ms
Communication Mode
Time Division Duplex (TDD)
Time Division Multiple Access (TDMA)
Maximum Distance Range
16 miles / 26 km
Serial port
Serial (RS-232) up to 115200 bps.
Serial port configurable as RS-232 and
RS-422, or RS-485
USB
USB 2.0 device port (12 Mbps)
Bluetooth
Bluetooth V2.0 Class 2 supporting SPP Slave and
Master Profiles
Bluetooth Antenna
External
Содержание AW400
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