User's Manual

MHX-900 Operating Manual: Appendix E Technical Specifications 27
E. Technical Specifications
Electrical/Physical
Data Interface Asynchronous Serial Port, TTL Levels
RS-232 Signals Sig. Gnd, TX, RX, DCD, DSR, DTR, RTS, CTS
Other Signals Reset, RxMode, TxMode, RSSI1, RSSI2, RSSI3
(All except Reset are status signals)
User Interface AT Command line interface
Bandwidth / Data Rate 2,400 - 115,200 bps, uncompressed half-duplex,
Approx. 100 kbps sustained in intelligent asymmetrical full-duplex
transmission mode
Communications Range Up to 30 kilometres (19 miles) line of sight
Power Requirements 4.75 to 5.5 VDC
Power Consumption 5500 mA at 1 W transmit, 220 mA receive
Operating Frequency 902 - 928 MHz
System Gain 135 dB
Sensitivity -105 dBm
Output Power 1mW, 10mW, 100mW, 1W (user-selectable)
Spreading Code Frequency Hopping
Hopping Patterns 20 pseudo-random, user-selectable
Error Detection CRC-16 with auto re-transmit
Dimensions (WxDxH)
Encl: 2.1” x 3.5” x 0.75” (53 mm x 89 mm x 19 mm)
Weight 75 grams
Operating Environment Temperature: -40 to +65°C
Humidity: 5 to 95%, non-condensing