Javad HPT901BT, Руководство пользователя

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Appendix A
37 www.javad.com
S
PECIFICATIONS
The Spread Spectrum module provides half-duplex communication with transmitter output power of 1 W
(+30 dBm) in the frequency band 902-928 MHz z. In 868-870 MHz band module provides half-duplex
communication with transmitter output power up to 0.5W (+27 dBm) with channel spacing 25.0/12.5
kHz. It supports GMSK modulation method.
Features
• DSP-Modem
• Zero-IF Technologies
• 902-928 MHz (USA), 915-928 MHz (Australia), 868-870 MHz (EU) Frequency Bands
• Up to 115200 bps Serial and USB Interface Data Rate
• Compact Design
1. Technical Specifications
1.1. Radio Receiver
Table 1. Radio Transceiver Specifications
Parameter Details
Frequency Range 902-928 MHz (USA)
915-928 MHz (Australia)
868-870 MHz (EU) with 25/12.5 kHz CS
Link Rate, symbols/second 8000, 16000, 32000, 64000 (USA/Australia)
4800, 9600 (EU)
Carrier Frequency Stability ±1 ppm
Modulation GMSK
Communication Mode Half duplex, simplex
Receiver Sensitivity for GMSK (BER 1x 10
-4
) -104 dBm for 64 kHz (USA, AUS)
-110 dBm for 25 kHz CS (EUR)
-112 dBm for 12.5 kHz CS (EUR)
Receiver Dynamic Range -119 to -10 dBm