Appendix A. Specifications; Supervisor Specifications; Node Specifications; Network Specifications - Geokon GeoNet 8800 Series Instruction Manual

APPENDIX A. SPECIFICATIONS

A.1 SUPERVISOR SPECIFICATIONS
Data Memory 9: 32 MB
Storage Capacity > 1.04 M Arrays
Communication Type USB, RS-232
Communication Speed 115.2 kBits/second
Communication Parameters 8,N,1 (data bits, parity, stop bits)
Communication Protocol Modbus RTU
Scan Interval 10-1440 Minutes
USB Driver FTDI
Power Supply D Cell, Alkaline or Lithium (2x)
Operating Time Please contact GEOKON
Operating Temperature −40 °C to +85 °C
(L×W×H) 120 × 122 × 91 mm

TABLE 9: Supervisor Specifications

A.2 NODE SPECIFICATIONS
Data Memory 10: 32 MB
Storage Capacity > 1.04 M Arrays
Trueness 0.082 Hz
Frequency Precision ±0.146Hz (99% CI)
Frequency Resolution ±0.002 Hz
Thermistor Accuracy 1% (0.5 °C thermistor point match)
Thermistor Resolution 0.032 °C
Scan Interval 10-1440 Minutes
Power Supply 2× D cell, Alkaline or Lithium, 12V Auxiliary
Operating Temperature −40 °C to +85 °C
Quiescent Current (Typical) < 50 μA
VW Excitation Peak Current 25 mA (max)
VW Frequency Range 400 Hz - 5000 Hz
Sweep/Read Duration/Channel < 500 mS
Battery Life Refer to Section 4.2
120 × 122 × 91 mm (single channel)
Dimensions (L×W×H) 160 × 260 × 91 mm (four channel)
180 × 280 × 101 mm (eight channel)

TABLE 10: Node Specifications

A.3 NETWORK SPECIFICATIONS
Network 11: Value
Topology Star/Mesh/Cluster Tree (Automatic)
Radio Technology IEEE 802.15.4 FHSS
Radio Frequency, ISM Band 902-928 MHz
Channels 12
Range (Indoor, Urban) 1.22 km (305 m x 4 hops)
Range (Outdoor) 26 km (6.5 km x 4 hops)
Transmit Power 250 mW
Receiver Sensitivity −101 dBm
Antenna (Half‑Wave Dipole) 2.1 dBi

TABLE 11: Network Specifications

MODEL 8800 SERIES GEONET WIRELESS DATA ACQUISITION NETWORK | SPECIFICATIONS | 25