Appendix A. Specifications; Supervisor Specifications; Node Specifications; Network Specifications - Geokon GeoNet 8900 Series Instruction Manual

APPENDIX A. SPECIFICATIONS

A.1 SUPERVISOR SPECIFICATIONS
Data Memory
Storage Capacity
Communication Type
Communication Speed
Communication Parameters
Communication Protocol
Scan Interval
USB Driver (not applicable to RS-232 version)
Power Supply
Operating Time
Operating Temperature
(L×W×H)

TABLE 10: Supervisor Specifications

A.2 NODE SPECIFICATIONS
Data Memory
Storage Capacity
Trueness
Frequency Precision
Frequency Resolution
Thermistor Accuracy
Thermistor Resolution
Scan Interval
Power Supply
Operating Temperature
VW Excitation Peak Current
VW Frequency Range
Sweep/Read Duration per Channel
Battery Life
Dimensions (L×W×H)
Vibrating wire (VW) channel
lightning protection
Thermistor (TH) channel

TABLE 11: Node Specifications

A.3 NETWORK SPECIFICATIONS
Network
Topology
Radio Technology
Radio Frequency, ISM Band
Channels
Range (Line of Sight)
Transmit Power
Receiver Sensitivity
Antenna (Half‑Wave Dipole)

TABLE 12: Network Specifications

MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | SPECIFICATIONS | 27
32 MB
> 1.04 M arrays
USB, RS-232
115.2 kBits/second
8,N,1 (data bits, parity, stop bits)
Modbus RTU
10-1440 minutes
FTDI
Battery pack, or 9‑24V DC external (Cellular Gateway Supervisor)
D cell, alkaline or lithium (2x), or 12V external (non‑cellular Supervisor)
Please contact GEOKON
−40 °C to +85 °C
160 × 260 × 91 mm (Cellular Gateway + Mesh Supervisor)
120 × 122 × 91 mm (Mesh Supervisor)
32 MB
Varies by model
0.082 Hz
±0.146 Hz (99% CI)
±0.002 Hz
External thermistor: ±0.5 °C
On-board sensor: ±0.4 °C
External thermistor: 0.032 °C
On-board sensor: 0.1 °C
10-1440 minutes
D cell, alkaline or lithium (2x), or 12V external
−40 °C to +85 °C
25 mA (max)
400 Hz - 5000 Hz
< 500 mS
Refer to Section 4.2
120 × 122 × 91 mm (single-channel node)
160 × 260 × 91 mm (four-channel node)
180 × 280 × 101 mm (eight-channel node)
Gas discharge tube
High-speed surge protector
Transient voltage suppression diode
Gas discharge tube
Inductor (lower resistance than high-speed surge protectors)
Transient voltage suppression diode
Value
Star/Mesh/Cluster Tree (Automatic)
FHSS
902-928 MHz
12
Up to 60 km (15 km x 4 hops)
1 W
−106 dBm
2.1 dBi
10:
11:
12: