Geokon GeoNet 8900 Series User manual

©2021, GEOKON. All rights reserved.
Document Revision: D| Release date: 04/16/21
Model 8900 Series
GeoNet Wireless
Data Hosting System
Instruction Manual

WARRANTY STATEMENT
GEOKON warrants its products to be free of defects in materials and workmanship,
under normal use and service for a period of 13 months from date of purchase. If the
unit should malfunction, it must be returned to the factory for evaluation, freight
prepaid. Upon examination by GEOKON, if the unit is found to be defective, it will be
repaired or replaced at no charge. However, the WARRANTY IS VOID if the unit shows
evidence of having been tampered with or shows evidence of being damaged as a
result of excessive corrosion or current, heat, moisture or vibration, improper specifi-
cation, misapplication, misuse or other operating conditions outside of GEOKON's
control. Components that wear or are damaged by misuse are not warranted. This
includes fuses and batteries.
GEOKON manufactures scientific instruments whose misuse is potentially dangerous.
The instruments are intended to be installed and used only by qualified personnel.
There are no warranties except as stated herein. There are no other warranties,
expressed or implied, including but not limited to the implied warranties of merchant-
ability and of fitness for a particular purpose. GEOKON is not responsible for any
damages or losses caused to other equipment, whether direct, indirect, incidental,
special or consequential which the purchaser may experience as a result of the instal-
lation or use of the product. The buyer's sole remedy for any breach of this agreement
by GEOKON or any breach of any warranty by GEOKON shall not exceed the purchase
price paid by the purchaser to GEOKON for the unit or units, or equipment directly
affected by such breach. Under no circumstances will GEOKON reimburse the
claimant for loss incurred in removing and/or reinstalling equipment.
Every precaution for accuracy has been taken in the preparation of manuals and/or
software, however, GEOKON neither assumes responsibility for any omissions or
errors that may appear nor assumes liability for any damages or losses that result
from the use of the products in accordance with the information contained in the
manual or software.
No part of this instruction manual may be reproduced, by any means, without the written consent of GEOKON. The
information contained herein is believed to be accurate and reliable. However, GEOKON assumes no responsibility
for errors, omissions or misinterpretation. The information herein is subject to change without notification.
The GEOKON® wordmark and logo are registered trademarks with the United States Patent and Trademark Office.

I
TABLE OF CONTENTS
1. INTRODUCTION............................................................................................................................................1
1.1 MODEL IDENTIFICATION .............................................................................................................1
1.2 MODEL LIST .............................................................................................................................................2
2. NETWORK COMPONENTS..............................................................................................................3
2.1 CELLULAR GATEWAY + MESH SUPERVISOR...........................................................3
2.2 MESH SUPERVISOR..........................................................................................................................3
2.2.1 RS-232 (890X-XX-SUP-232)...........................................................................................................3
2.2.2 USB (890X-XX-SUP-USB) ...............................................................................................................3
2.3 SINGLE-CHANNEL NODE..............................................................................................................4
2.3.1 10-PIN CONNECTOR (890X-XX-01C-10P)................................................................................4
2.3.2 GLAND SEAL (890X-XX-01C-CBL)..............................................................................................4
2.4 ADDRESSABLE SENSOR NODES..........................................................................................4
2.4.1 SINGLE CHANNEL GLAND SEAL (8900-XX-ADR-CBL)......................................................5
2.4.2 FOUR-CHANNEL GLAND SEAL (890X-XX-04C-CBL) ..........................................................5
2.4.3 EIGHT-CHANNEL GLAND SEAL (890X-XX-08C-CBL) .........................................................6
2.4.4 ADDITIONAL INFORMATION .......................................................................................................6
2.5 TILTMETER NODES............................................................................................................................6
2.5.1 BIAXIAL TILTMETER (890X-XX-TLT-NAP) ...............................................................................7
2.6 ACCESSORIES ........................................................................................................................................7
2.7 NETWORKS...............................................................................................................................................7
3. NETWORK INSTALLATION......................................................................................................... 10
3.1 PREPARE THE SUPERVISOR AND NODES............................................................... 10
3.1.1 INSTALL THE ANTENNAS ON ALL DEVICES .................................................................... 10
3.1.2 REMOVE THE COVERS FROM ALL DEVICES .................................................................... 10
3.1.3 CONFIGURE THE CHANNEL ON ALL DEVICES ................................................................ 10
3.2 CONFIGURE THE SUPERVISOR .......................................................................................... 11
3.2.1 POWER CONCERNS..................................................................................................................... 11
3.2.2 POWER THE SUPERVISOR........................................................................................................ 11
3.2.3 SEAL THE SUPERVISOR ............................................................................................................. 12
3.2.4 SET THE NETWORK TIME.......................................................................................................... 13
3.2.5 VERIFY THE NETWORK TIME .................................................................................................. 13
3.2.6 RECORD THE SUPERVISOR SERIAL NUMBER................................................................. 13
3.3 ACTIVATE THE NETWORK ...................................................................................................... 13
3.3.1 POWER THE NODES .................................................................................................................... 13

II
3.3.2 VERIFY THE NETWORK CONNECTION OF THE NODES ............................................... 13
3.4 MOUNTING THE DEVICES ....................................................................................................... 13
3.4.1 MOUNTING LOCATION CONSIDERATIONS....................................................................... 14
3.4.2 GROUND THE SUPERVISOR AND NODES.......................................................................... 15
3.5 CONNECT THE SENSORS TO NODES ........................................................................... 15
3.5.1 MAKING CABLE GLAND CONNECTIONS ............................................................................ 15
3.5.2 MAKING 10-PIN CABLE CONNECTIONS ............................................................................. 16
3.5.3 NOTES CONCERNING MULTI-CHANNEL AND ADDRESSABLE NODES................ 16
3.5.4 SEAL THE NODES.......................................................................................................................... 16
3.5.5 RECORD NODE AND SENSOR SERIAL NUMBERS ......................................................... 17
3.6 CELLULAR GATEWAY COMMISSIONING.................................................................. 17
3.7 DEPLOYMENT MODE.................................................................................................................... 20
3.7.1 PLACING THE SUPERVISOR AND ADDING NODES ....................................................... 20
3.8 STATUS BUTTON FUNCTIONALITY ................................................................................ 21
4. MAINTENANCE ......................................................................................................................................... 23
4.1 PREVENTING WATER FROM ENTERING THE ENCLOSURES .................. 23
4.2 BATTERY LIFE ..................................................................................................................................... 23
4.3 REPLACING BATTERIES ............................................................................................................ 23
4.4 LIGHTNING PROTECTION ........................................................................................................ 24
5. MODEL 8800-2-4B ADD-ON MODULE........................................................................... 25
5.1 INTRODUCTION................................................................................................................................. 25
5.2 INSTALLATION OVERVIEW..................................................................................................... 25
5.3 IP ADDRESS CONFIGURATION........................................................................................... 25
APPENDIX A. SPECIFICATIONS................................................................................................... 27
A.1 SUPERVISOR SPECIFICATIONS......................................................................................... 27
A.2 NODE SPECIFICATIONS ............................................................................................................ 27
A.3 NETWORK SPECIFICATIONS................................................................................................ 27
A.4 BIAXIAL TILTMETER SPECIFICATIONS ...................................................................... 28
APPENDIX B. CONNECTOR PINOUTS .................................................................................. 29
B.1 GAUGE CABLE .................................................................................................................................... 29
B.1.1 VW NODES (890X-XX-01C-CBL).............................................................................................. 29
B.1.2 ADDRESSABLE NODES (890X-XX-ADR-CBL).................................................................... 29
B.1.3 10-PIN BULKHEAD (890X-XX-01C-10P) ............................................................................... 29
B.2 COMMUNICATION CONNECTIONS ................................................................................ 29
B.2.1 RS-232 (890X-XX-SUP-232)....................................................................................................... 29

III
B.2.2 USB (890X-XX-SUP-USB)........................................................................................................... 29
APPENDIX C. THERMISTOR TEMPERATURE DERIVATION....................... 30
C.1 3KΩ THERMISTOR RESISTANCE ..................................................................................... 30
C.2 10KΩ THERMISTOR RESISTANCE.................................................................................. 31
APPENDIX D. TROUBLESHOOTING......................................................................................... 32
APPENDIX E. FIRMWARE UPDATE ......................................................................................... 34
E.1 PROCEDURE ......................................................................................................................................... 34
E.2 FIRMWARE TROUBLESHOOTING ..................................................................................... 37
APPENDIX F. SOLAR PANEL KIT ............................................................................................... 38
F.1 SELECT A LOCATION.................................................................................................................... 39
F.2 ASSEMBLE THE MOUNTING BRACKET...................................................................... 39
F.3 INSTALL THE MOUNTING BRACKET............................................................................. 39
F.4 SECURE THE SOLAR PANEL TO THE MOUNTING BRACKET.................. 39
F.5 CONNECT THE POWER CABLE ........................................................................................... 40
F.5.1 BATTERY SWITCH......................................................................................................................... 40
F.5.2 MAKING THE CONNECTION..................................................................................................... 40
APPENDIX G. CERTIFICATIONS .................................................................................................. 41

IV
FIGURES
FIGURE 1: CELLULAR GATEWAY + MESH SUPERVISOR ...............................................3
FIGURE 2: NETWORK SUPERVISOR (-SUP-232) .............................................................3
FIGURE 3: NETWORK SUPERVISOR (-SUP-USB) ............................................................4
FIGURE 4: SINGLE CHANNEL NODE (-01C-10P) ............................................................4
FIGURE 5: SINGLE CHANNEL NODE (-01C-CBL) ............................................................5
FIGURE 6: ADDRESSABLE NODE (-ADR) ........................................................................5
FIGURE 7: FOUR CHANNEL NODE (-04C) .......................................................................6
FIGURE 8: EIGHT CHANNEL NODE (-08C) ......................................................................6
FIGURE 9: BIAXIAL TILTMETER NODE (-TLT-NAP) ..........................................................7
FIGURE 10: STAR NETWORK TOPOLOGY .......................................................................9
FIGURE 11: MESH NETWORK TOPOLOGY ......................................................................9
FIGURE 12: WORKING AROUND OBSTRUCTIONS VIA HOPS .....................................10
FIGURE 13: FRESNEL ZONE ...........................................................................................11
FIGURE 14: CHANNEL SELECT SWITCHES ...................................................................13
FIGURE 15: CELLULAR GATEWAY SUPERVISOR BATTERY SWITCH ..........................14
FIGURE 16: NON-CELLULAR SUPERVISOR BATTERY SWITCH ...................................14
FIGURE 17: BATTERY DETAIL .........................................................................................14
FIGURE 18: INSTALLING NEAR A LARGE OBJECT .......................................................16
FIGURE 19: INSTALLING CLOSE TO BUILDINGS OR FENCES/WALLS .......................16
FIGURE 20: MOUNTING ONTO A METAL PLATE / INSIDE AN ENCLOSURE .............17
FIGURE 21: BATTERY BOARD CONNECTIONS .............................................................18
FIGURE 22: ACCESSING THE CLOUD ............................................................................19
FIGURE 23: CREATE A USER ..........................................................................................20
FIGURE 24: ADD AN ACCOUNT .....................................................................................20
FIGURE 25: API ACCOUNTS ...........................................................................................20
FIGURE 26: ENTER YOUR CREDENTIALS ......................................................................21
FIGURE 27: ENTER THE SERIAL NUMBER ....................................................................21
FIGURE 28: ACTIVATE CELLULAR SERVICE ..................................................................21
FIGURE 29: CREATE THE TOKEN ...................................................................................22
FIGURE 30: COPY THE TOKEN .......................................................................................22
FIGURE 31: INSTALLATION ORDER ...............................................................................23
FIGURE 32: NPORT CONFIGURATION ...........................................................................27
FIGURE 33: UPDATE FIELDS ..........................................................................................28
FIGURE 34: IP ADDRESS WITH :4001 SUFFIX ..............................................................28
FIGURE 35: RS-232 CABLE CONNECTION ....................................................................42
FIGURE 36: USB CABLE CONNECTION .........................................................................42
FIGURE 37: CHOOSE THE ’EXTRACT ALL’ MENU OPTION ..........................................43
FIGURE 38: CLICK THE ’EXTRACT ALL’ BUTTON ..........................................................43

V
FIGURE 39: SELECT THE DESTINATION ........................................................................43
FIGURE 40: OPEN THE GEOKON UPDATE UTILITY ......................................................43
FIGURE 41: CLICK ’SELECT FILE’ ...................................................................................43
FIGURE 42: SELECT THE FIRMWARE TEXT FILE ..........................................................44
FIGURE 43: SELECT THE COM PORT .............................................................................44
FIGURE 44: CLICK ’PROGRAM’ ......................................................................................44
FIGURE 45: SOLAR PANEL 8900-SOL-10W-BRJ ..........................................................46
FIGURE 46: SOLAR PANEL KIT BOX CONTENTS ..........................................................46
FIGURE 47: MOUNTING OPTIONS .................................................................................47
FIGURE 48: CENTRALLY-LOCATED MOUNTING HOLES ..............................................47
FIGURE 49: MOUNTING BRACKET FASTENED CENTRALLY ........................................48
FIGURE 50: SOLAR PANEL WITH EXTERNAL BATTERY ...............................................48

VI
TABLES
TABLE 1: GEONET MODEL IDENTIFICATION ..................................................................1
TABLE 2: GEONET 8901 SERIES MODEL LIST ................................................................2
TABLE 3: FOUR-CHANNEL NODE GAUGE/LOAD LIMITS ..............................................5
TABLE 4: EIGHT-CHANNEL NODE GAUGE/LOAD LIMITS .............................................6
TABLE 5: CHANNEL SELECTION .....................................................................................11
TABLE 6: CELLULAR GATEWAY SUPERVISOR BATTERY SWITCH OPTIONS............12
TABLE 7: NODE WIRING ..................................................................................................16
TABLE 8: LED INDICATOR MEANING ............................................................................21
TABLE 9: STATUS BUTTON FUNCTIONS........................................................................22
TABLE 10: BATTERY LIFE ESTIMATES............................................................................23
TABLE 11: SUPERVISOR SPECIFICATIONS....................................................................27
TABLE 12: NODE SPECIFICATIONS ................................................................................27
TABLE 13: NETWORK SPECIFICATIONS ........................................................................27
TABLE 14: BIAXIAL TILTMETER SPECIFICATIONS........................................................28
TABLE 15: TRANSDUCER CABLE CONNECTIONS (GLAND SEAL) .............................29
TABLE 16: ADDRESSABLE NODES.................................................................................29
TABLE 17: TRANSDUCER CABLE CONNECTIONS (10-PIN BULKHEAD) ...................29
TABLE 18: COMMUNICATION CONNECTIONS (RS-232).............................................29
TABLE 19: COMMUNICATIONS CONNECTIONS (USB)................................................29
TABLE 20: 3KΩ THERMISTOR RESISTANCE..................................................................30
TABLE 21: 10KΩ THERMISTOR RESISTANCE ...............................................................31

VII
EQUATIONS
EQUATION 1: 3KΩ THERMISTOR RESISTANCE............................................................. 32
EQUATION 2: 10KΩ THERMISTOR RESISTANCE........................................................... 35

VIII

MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | INTRODUCTION | 1
1. INTRODUCTION
GeoNet is a low-power wireless data hosting system, designed to efficiently
collect data from many points. GeoNet is especially helpful in geographically-
complex locations where a wired infrastructure would be expensive or even
impossible. Available network components include a cellular gateway/mesh
supervisor, mesh supervisor, single- and/or multi-channel node units,
addressable nodes, and Agent software.
Model 8900 Series Nodes collect data from GEOKON's vibrating wire (VW)
gauges and sensors.
The tiltmeter contains an integrated GEOKON biaxial tiltmeter, and functions in
the same manner as other nodes.
The Cellular Gateway + Mesh Supervisor contains a cellular module in addition
to the mesh supervisor functionality. The device stores battery and temperature
data sent from the nodes, and data from the sensors, but it does not possess
sensor-reading functionality on its own. Data can be retrieved using the GEOKON
cloud, or manually using a cable.
The mesh supervisor unit is the same as the cellular gateway except it lacks a
cellular module. Data must be retrieved manually via a direct cable connection.
FEATURES:
■Automated cellular data connection to servers
■Automated calculation of engineering units via Web API integration with the
GEOKON database
■Improved radio range
Up to 60 km (15 km x 4 hops) range, line-of-sight (North America)
Up to 22 km (5.5 km x 4 hops) range, line-of-sight (Europe)
■Up to 12 networks per area (using unique channels)
■USB connector for firmware updates, diagnostics, and more
GEOKON recommends that you configure your network with the devices at the
same location, in close proximity to each other, before you deploy them to their
respective on-site positions.
An installation tutorial on the GEOKON website, https://www.geokon.com/
tutorial-videos, can help with this.
1.1 MODEL IDENTIFICATION
The 8900 series model numbers are composed of codes that together indicate
the following information about each unit:
TABLE 1: GeoNet Model Identification
CAUTION! To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance
of 20 cm or more should be maintained between the antenna of this device and persons during device
operation. To ensure compliance, operations at closer than this distance is not recommended. The antenna
used for this transmitter must not be co-located in conjunction with any other antenna or transmitter.
Series Region 1: Model Type Supervisor PC Connection Node Sensor Connection
8901 NA: North America LTM: Gateway & Supervisor LTM: LTE-M Networks CBL: Cable Gland
8903 BZ: Brazil 03G: Gateway & Supervisor 03G: 3G Networks 10P: 10 Pin
EU: Europe SUP: Supervisor 232: RS-232 Com NAP: No Access Point
01C: Single Channel Node USB: USB Com
04C: Four Channel Node
08C: Eight Channel Node
ADR: Addressable Node
TLT: Tiltmeter Node

2| INTRODUCTION | GEOKON
Note: 8900 series models made for North America, Brazil, and Europe are
designed to operate in an identical manner.
1.2 MODEL LIST
The list of 8900 series models is as follows:
TABLE 2: GeoNet 8900 Series Model List
8901-NA-LTM-USB 2: LTE‑M Cellular Gateway & Mesh Supervisor, Cable Gland, North America
8901-NA-03G-USB 3G Cellular Gateway & Mesh Supervisor, Cable Gland, North America
8901-NA-SUP-232 RS-232 Supervisor, North America
8901‑NA‑SUP‑USB USB Supervisor, North America
8901-NA-01C-10P Single Channel VW Node, 10‑Pin Bulkhead, North America
8901-NA-01C-CBL Single Channel VW Node, Cable Gland, North America
8901-NA-ADR-CBL Single Channel Addressable Node, Cable Gland, North America
8901-NA-04C-CBL Four Channel Addressable Node, Cable Gland, North America
8901-NA-08C-CBL Eight Channel Addressable Node, Cable Gland, North America
8901-NA-TLT-NAP Biaxial Tiltmeter Node, No Access Point, North America
8901-BZ-SUP-232 RS-232 Supervisor, Brazil
8901‑BZ‑SUP‑USB USB Supervisor, Brazil
8901-BZ-01C-10P Single Channel VW Node, 10‑Pin Bulkhead, Brazil
8901-BZ-01C-CBL Single Channel VW Node, Cable Gland, Brazil
8901-BZ-ADR-CBL Single Channel Addressable Node, Cable Gland, Brazil
8901-BZ-04C-CBL Four Channel Addressable Node, Cable Gland, Brazil
8901-BZ-08C-CBL Eight Channel Addressable Node, Cable Gland, Brazil
8903-EU-LTM-USB LTE‑M Cellular Gateway & Mesh Supervisor, Europe
8903-EU-03G-USB 3G Cellular Gateway & Mesh Supervisor, Cable Gland, Europe
8903‑EU‑SUP‑232 RS-232 Supervisor, Europe
8903‑EU‑SUP‑USB USB Supervisor, Europe
8903-EU-01C-10P Single Channel VW Node, 10‑Pin Bulkhead, Europe
8903-EU-01C-CBL Single Channel VW Node, Cable Gland, Europe
8903-EU-ADR-CBL Single Channel Addressable Node, Cable Gland, Europe
8903-EU-04C-CBL Four Channel Addressable Node, Cable Gland, Europe
8903-EU-08C-CBL Eight Channel Addressable Node, Cable Gland, Europe
8903-EU-TLT-NAP Biaxial Tiltmeter Node, No Access Point, Europe

MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | NETWORK COMPONENTS | 3
2. NETWORK COMPONENTS
2.1 CELLULAR GATEWAY + MESH SUPERVISOR
Cellular Gateway + Mesh Supervisor models send their data to GEOKON’s safe
and secure Cloud via a cellular data connection, and are available with LTM or
3G connections.
The cellular connectivity is included in the data plan and no user configuration is
necessary. Users can commission or decommission their own systems via
GEOKON’s online portal.
In its mesh supervisor role, the unit stores battery and temperature data sent
from the nodes, and data from the sensors, but it does not possess sensor-
reading functionality on its own.
1:
FIGURE 1: 890X-XX-XXX-USB
2.2 MESH SUPERVISOR
Mesh supervisor models lack an integrated cellular gateway, but they are
otherwise functionally the same as Cellular Gateway + Mesh Supervisor models.
2.2.1 RS-232 (890X-XX-SUP-232)
This model features an RS-232 connector, for transferring data using an RS-232
cable to a PC running Agent software.
2.2.2 USB (890X-XX-SUP-USB)
This model features a USB connector, for transferring data using a USB cable to
a PC running Agent software.
2:
FIGURE 2: RS-232 Mesh Supervisor (left) and USB Mesh Supervisor (right)

4| NETWORK COMPONENTS | GEOKON
2.3 SINGLE-CHANNEL NODE
A single-channel node will read one GEOKON vibrating wire gauge, either via 10-
pin cable or via a cable with stripped conductor wires, depending on model.
Though designed to send data wirelessly to a mesh supervisor, this model also
features a USB connector, for transferring data using a USB cable to a PC
running Agent software.
2.3.1 10-PIN CONNECTOR (890X-XX-01C-10P)
For use with gauges with 10-pin cable connectors.
2.3.2 GLAND SEAL (890X-XX-01C-CBL)
For use with gauge cables that have stripped conductor wires. The gauge cable
passes through an external cable gland and is wired into the terminal block.
3:
FIGURE 3: 10-Pin Single-Channel Node (left) and Gland-Seal Single-Channel Node
(right)
2.4 ADDRESSABLE SENSOR NODES
Addressable sensor nodes will read up to eight GEOKON vibrating wire gauges,
depending on model, via cables with stripped conductor wires. The cables pass
through external cable glands and are wired into the terminal blocks.
Addressable sensor nodes function in the same manner as other nodes.
Though designed to send data wirelessly to a supervisor, these models also
feature a USB connector for transferring data using a USB cable to a PC running
Agent software, just as with single-channel nodes.

MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | NETWORK COMPONENTS | 5
2.4.1 SINGLE CHANNEL GLAND SEAL (8900-XX-ADR-CBL)
For use with sensor cables with stripped and tinned ends. The sensor cable
passes through an external cable gland and is wired into the terminal block.
4:
FIGURE 4: Addressable Node (8900-XX-ADR-CBL)
2.4.2 FOUR-CHANNEL GLAND SEAL (890X-XX-04C-CBL)
5:
FIGURE 5: Four-Channel Node (890X-XX-04C-CBL)
Note: When inserting stripped conductor wires into the terminal blocks, be sure
to connect them to the VW terminal blocks.
A four-channel node can be configured as follows: 3:
TABLE 3: Four-Channel Node Gauge/Load Limits
Model Maximum Number of Gauges Maximum Number of Load Cells
890X‑XX‑04C‑CBL Four One 3‑gauge or one 4‑gauge load cell

6| NETWORK COMPONENTS | GEOKON
2.4.3 EIGHT-CHANNEL GLAND SEAL (890X-XX-08C-CBL)
6:
FIGURE 6: Eight-Channel Node (890X-XX-08C-CBL)
Note: When inserting stripped conductor wires into the terminal blocks, be sure
to connect them to the VW terminal blocks.
An eight-channel node can be configured as follows: 4:
TABLE 4: Eight-Channel Node Gauge/Load Limits
2.4.4 ADDITIONAL INFORMATION
ADRs are protected from environmental contaminants by a rugged IP66 die cast
aluminum enclosure. An earth ground terminal is provided on the exterior of the
enclosure to protect against lightning and other large, transient voltages.
2.5 TILTMETER NODES
Tiltmeters are designed for permanent long-term monitoring of changes in tilt
of structures such as dams, embankments, foundation walls, retaining walls,
buildings, and the like.
GEOKON biaxial tiltmeter nodes contain an integratedtiltmeter sensor, and
communicate with the supervisor in the same manner as other nodes.
The two axes of the tiltmeter have a rangeof ±90°, based on a starting position
of 0°. To achieve the best linearity, mount the tiltmeter so the back of the
enclosure is as close as possible to vertical, and the bottom of the enclosure is
as close as possible to horizontal.
Though designed to send data wirelessly to a mesh supervisor, this model also
features a USB connector for transferring data using a USB cable to a PC
running Agent software, the same as with the single channel nodes.
Model Maximum Number of Gauges Maximum Number of Load Cells
890X‑XX‑08C‑CBL Eight One 3‑gauge and one 4‑gauge load cell
Two 3‑gauge or two 4‑gauge load cells
One 6‑gauge load cell

MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | NETWORK COMPONENTS | 7
2.5.1 BIAXIAL TILTMETER (890X-XX-TLT-NAP)
7:
FIGURE 7: Tiltmeter Node (890X-XX-TLT-NAP)
2.6 ACCESSORIES
Supervisors and nodes are shipped with the following accessories:
■One omni-directional antenna (2.1 dBi). For other antenna options, please
contact GEOKON technical support.
■Two D cell alkaline batteries
■Four desiccant packs
Supervisors are shipped with the following additional accessories:
■Set of two screwdrivers, one Phillips head and one flat-head
■One RS-232 or USB cable (depending on the model purchased)
■USB to RS-232 adapter cable (RS-232 models only)
2.7 NETWORKS
Many networks use a star topology, where all nodes can send data directly to
the supervisor. Other networks use a mesh topology, in which nodes will relay
data from any node that might be blocked, or out of range from the supervisor.
GeoNet networks are self-healing. This means that GeoNet will switch to a
mesh topology so that nodes will automatically relay data from troubled nodes
to the supervisor, if needed.l
GeoNet networks are self-configuring, meaning that the switch from a star
topology to a mesh topology is automatic, and the nodes will determine for
themselves which will relay data to the supervisor.

8| NETWORK COMPONENTS | GEOKON
8:
FIGURE 8: Star Network Topology
9:
FIGURE 9: Mesh Network Topology
Each transmission from node to supervisor or node to node is considered one
"hop". Examples of hops are shown in figures above and below. Up to four hops
can be made between a node and the supervisor. With the ability to hop comes
the ability for the supervisor to communicate with nodes that have not
established direct radio contact. GeoNet devices can operate around buildings
or other barriers using hops.
10:
FIGURE 10: Working Around Obstructions via Hops
1 Hop
S = Supervisor
N = Node (1, 4, 8, ADR)
= Data Path
Cell
Ethernet
USB/RS-232
1 Hop
S = Supervisor
N = Node (1, 4, 8, ADR)
= Data Path
1 Hop
Cell
Ethernet
USB/RS-232
1 Hop
Obstruction
1 Hop
1 Hop
1 Hop
1 Hop
1 Hop
1 Hop