User's Manual

FreeWave Technologies Spread Spectrum Transceiver User Manual
900 MHz and 2.4 GHz
V5.0S
59
Technical Specifications
Specification
Frequency: 902 to 928 MHz
Transmitter:
Output Power
1 mW to 1 W (+30 dDm)
Range* 60 miles
Modulation
Spread Spectrum GFSK, 120 kBs – 170 kBs
Spreading method
Frequency hopping
Occupied Bandwidth
230 kHz
Receiver:
Sensitivity
-108 dBm for 10
-6
BER standard speed
-111 dBm for 10
-6
BER low speed
-110 dBm for 10
-4
BER standard speed
-113 dBm for 10
-4
BER low speed
Selectivity
20 dB at fc ± 115 kHz
60 dB at fc ±145 kHz
System gain
140 dB
Data Transmission:
Error Detection 32 Bit CRC, resend on error
Forward error correction
(low speed)
(24,12) Golay, retransmit on uncorrectable error
Data Encryption
Substitution, dynamic key
Max Link Throughput
115 Kbaud standard speed, 38.4 Kbaud low speed
Data Interface
RS-232/RS485 1200 Baud to 230.4 KBaud, asynch, full duplex
TTL (RF board level only)
Ethernet 10BaseT
Power Requirements:
Supply voltage 6 to 30 Vdc, 10 to 60 Vdc with HV option
Max Transmit current,
for 1 W transmit power,
low MCU speed
6 Vdc: 1 A
12 Vdc: 500 mA
30 Vdc 200 mA
Max Receive current, low
MCU speed
6 Vdc: 110 mA
12 Vdc: 60 mA
30 Vdc 40 mA
Max Idle current, low
MCU speed
6 Vdc: 30 mA
12 Vdc: 16 mA
30 Vdc 9 mA
Max Sleep current, low
MCU speed
6 Vdc: 8 mA
12 Vdc: 5 mA
30 Vdc 2 mA
Operating Modes:
Point-to Point
Point-to-Multipoint
Peer-to-Peer
Store and Forward Repeater
Operating Environment
-40°C - +75°C, 0 to 95% humidity non-condensing
* Line of sight distance with unity gain antenna
** Throughput measured assuming 75% frequency availability.