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MST ImPact NS5004, ImPact NS5002, ImPact NS5003, ImPact NS5001 User Manual

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Page 1
NS50 Wireless Network Switch
User Guide
Revision C
NS50_UG_EN_C
Page 2
Page 3

Contents

Revision History............................................................................................................................................7
Contact Information.......................................................................................................................................9
About this Manual.......................................................................................................................................11
Chapter 1: Understanding the NS50 Wireless Network Switch...........13
Chapter 2: Network System Design.........................................................19
1.1 Hardware Overview...................................................................................................................14
1.2 System Layout...........................................................................................................................16
1.3 Connectivity...............................................................................................................................16
2.1 Installation Types and Coverage................................................................................................20
2.2 Power Requirements..................................................................................................................20
2.3 Choosing Antennas....................................................................................................................20
2.4 Placement of NS50 Units..........................................................................................................21
2.5 Placement of Antennas..............................................................................................................21
2.6 Determining Distances between Wireless Network Switches...................................................23
Chapter 3: Installation..............................................................................25
3.1 NS50 Mounting Options............................................................................................................26
3.2 Antenna Mounting Options.......................................................................................................26
3.3 Installation Schemes..................................................................................................................27
3.4 Connecting power to the NS50..................................................................................................31
3.5 Handling Composite Cable During Installation........................................................................32
3.6 Connecting Composite Cable to the NS50................................................................................32
3.7 Standard Composite and Fibre Cable Lengths..........................................................................34
3.8 Connecting Ethernet Cable to the NS50....................................................................................35
3.9 Connecting F-LINK Terminated Composite Cable to the NS50...............................................36
3.10 Connecting Antennas to the NS50...........................................................................................38
3.11 Manual Reset and Reboot........................................................................................................40
Chapter 4: Understanding VLANs .........................................................43
4.1 Understanding Trunk and Access Ports.....................................................................................44
NS50 User Guide3Revision C
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4.1.1 Trunk Ports.................................................................................................................44
4.2 VLANs and Wireless Networks................................................................................................46
4.3 Native VLAN ...........................................................................................................................46
Chapter 5: Conguration Using the Web Interface ..............................49
5.1 Logging onto the Web Browser Interface..................................................................................50
5.2 Conguration screen..................................................................................................................50
5.3 Status Tab...................................................................................................................................51
5.3.1 Obtaining Device Information....................................................................................51
5.3.3 Viewing System Logs.................................................................................................53
5.3.4 Viewing Network Trafc Statistics............................................................................54
5.3.5 Viewing Ethernet Switch Information........................................................................56
5.3.6 Viewing Switch Trafc...............................................................................................56
5.3.7 Viewing Tracking Information...................................................................................57
5.4 Tools Tab...................................................................................................................................59
5.4.1 Conguring Administrator and User Settings............................................................59
5.4.2 Setting the Time..........................................................................................................61
5.5 Settings Tab...............................................................................................................................66
5.5.1 Managing Automatic TFTP Conguration................................................................66
5.5.2 Conguring SNMP Settings.......................................................................................66
5.5.3 Setting Up the LAN....................................................................................................67
5.5.4 Conguring Wireless Radio.......................................................................................68
5.5.5 Conguring Wireless Networks.................................................................................71
5.5.6 Conguring EAP (Extensible Authentication Protocol)............................................74
5.5.8 Conguring Asset Tracking and Location Based Services........................................76
5.5.9 Conguring Ethernet Switch Ports.............................................................................78
5.5.11 Dening VLANs......................................................................................................81
5.5.12 Conguring the VLAN Port Map.............................................................................82
Chapter 6: Centralised Conguration Management ............................85
6.1 Device Management Overview.................................................................................................86
6.1.1 Site Conguration.......................................................................................................86
6.1.2 AP Cong Templates..................................................................................................86
6.2 TFTP Server Overview..............................................................................................................90
6.3 TFTP Parameters.......................................................................................................................91
Revision C4NS50 User Guide
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Appendix A: Troubleshooting Guide.......................................................93
Appendix B: Composite Cable Testing....................................................95
B.1 Visual Inspection of the Fibre Optic Cable...............................................................................95
B.2 Measuring and Testing for Power Loss.....................................................................................95
Appendix C: Ethernet Cable Specications...........................................97
Appendix D: Device Discovery.................................................................99
Appendix E: Time Zone Indices and Offsets .......................................101
Appendix F: Connecting a PC to an ImPact Network Device............105
Appendix G: Maintenance Check-list...................................................109
Appendix H: Acronyms..........................................................................111
Appendix I: ImPact NS50 Specications..............................................113
Appendix J: Hardware Warranty.........................................................117
NS50 User Guide5Revision C
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Revision C6NS50 User Guide
Page 7

Revision History

DateChangeRevision
February 2012User Manual for NS50 hardware and rmware 2.22.16A
September 2012Updated for rmware 2.24.2B
December 2012Updated Centralised Conguration ManagementC
Copyright©2012 Mine Site Technologies Pty Ltd. All rights reserved. Mine Site Technologies Pty Ltd reserves the right to make changes to specications and information in this manual without prior notice.
Mine Site Technologies Pty Ltd accepts no responsibility for any errors or omissions contained in this manual.
NS50 User Guide7Revision C
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Contact Information

AUSTRALIA - Sydney
113 Wicks Road North Ryde NSW 2113 AUSTRALIA Tel: +61 2 9491 6500
CANADA - Sudbury
1085 Kelly Lake Road Sudbury Ontario P3E 5P5 CANADA Tel: +1 705-675 7468
CHINA - Hangzhou
4F, Building 1 1413 Moganshan Road Hangzhou CHINA 310011 Tel: +86 571 85803320x206
UNITED STATES - Denver
13301 W 43rd Drive Golden Colorado 80403 USA Tel: +1 303-951 0570
GERMANY - Berlin
Mine Site Technologies (GmbH) Uhlandstr. 20-25 10623 Berlin GERMANY Tel: +49 30 8861 4511
NS50 User Guide9Revision C
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About this Manual

This manual describes features and functions of the NS50 Wireless Network Switch. It provides information about hardware, installation, conguration and how to troubleshoot any issues. You will nd it easier to use the manual if you are familiar with networking systems and have an understanding of electronics in a network environment.
Conventions used in the manual
This publication uses the following conventions to highlight and convey information:
• Text that requires input from an operator is boldfaced.
• Operator interface screen control names are boldfaced.
• Keyboard input keys are CAPITALISED.
Icons
Icons are used in the manual to highlight specic information as shown the table below.
DescriptionIcon
Note:
Important:
Caution:
Related Publications
ImPact Wireless Network Switch User Manual
Additional Support
For additional support please visit our website http://www.minesite.com.au.
Note: The information provided in this document ("Information") is presented in good faith and believed to be correct as at the date of this document. MST makes no representations as to the accuracy or completeness of the Information. The Information is supplied on the condition that the recipient will make their own determination as to the suitability of the Information for their purposes prior to use. Under no circumstances will MST be responsible for any damages whatsoever resulting from the use of, or reliance upon, the Information.
The Note icon indicates important information or references to the user.
The Important icon contains information to prevent damage to the product and injury to the user.
The Caution icon indicates to stop and pay attention or an action not to be performed.
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Chapter
1

Understanding the NS50 Wireless Network Switch

Topics:
•
Hardware Overview
•
System Layout
•
Connectivity
This chapter presents the features and functions of the ImPact NS50 Wireless Network Switch and shows how it is integrated within a network.
Mine Site Technologies' ImPact NS50 consists of a managed bre optic Ethernet switch and two 802.11b/g wireless access points. It provides wired and wireless network access for mining environments that do not require Intrinsically Safe equipment. The NS50 forms a network infrastructure where voice, tracking, video and process control applications can be used to enhance mining safety and communications.
The NS50 has the following features:
• Up to four bre optic Gigabit Ethernet ports
• Four 10/100 Ethernet ports with Power over Ethernet (PoE) supply capability
• Up to two 802.11b/g wireless access points
• Powder-coated stainless steel enclosure, sealed to comply with an Ingress Protection standard rating of IP65
• AeroScout tag reading capability, allowing real time tracking of assets and personnel
• Composite cabling system incorporating bre optic data and DC power
• Low power design, with a wide input voltage from 10-50VDC
• Simple Network Management Protocol (SNMP) support for remote monitoring
• Wireless Distribution System (WDS) for wireless VLAN trunking with other ImPact network devices.
For detailed specications on the NS50, see ImPact NS50
Specications on page 113.
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Understanding the NS50 Wireless Network Switch

1.1 Hardware Overview

The features and functions of the NS50 are illustrated below.
Note: The NS50 has four slightly different models:
• NS5001 - 1 Radio port, 2 Fibre ports
• NS5002 - 2 Radio ports, 2 Fibre ports
• NS5003 - 1 Radio port, 4 Fibre ports
• NS5004 - 2 Radio ports, 4 Fibre ports
This manual is written for the NS5004. If you have one of the other models, there may be slight differences. Please note that these models have different internal hardware, and it is not possible to upgrade one model into another.
FunctionDescriptionKey
1
Composite bre / power cable port
Connector for data transmission and / or DC power distribution.
Labelling of the bre optic ports.Composite bre port number2
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Understanding the NS50 Wireless Network Switch
FunctionDescriptionKey
Power indicator LED3
Status indicator LED4
7
Fibre port Link / Activity status LEDs
External Ethernet ports9
• Green: when power is applied to the NS50.
• Red: when the power drops below 12V.
• Flashing Red: startup in progress.
• Flashing Green: normal operation.
• Solid Red: indicates an error.
•
Off: indicates a problem (Refer to the Troubleshooting
Guide on page 93).
RP-TNC jack for connecting an antenna to Radio 2.MAIN antenna port for Radio 25
RP-TNC jack for connecting an antenna to Radio 2.AUX antenna port for Radio 26
• The top LED (green) ashes when data is transmitted or received, and is solid when a link is established.
• The lower LED (orange) is active when the link is running at 1Gbps.
Labelling of the Ethernet ports.External Ethernet port number8
External Ethernet with IEEE 802.3af PoE supply capability for powering WAPs and other network devices.
10
15
External Ethernet port (9) Link / Activity status LEDs
Ethernet port protective cover13
Radio Link / Activity status LED14
cover
Reset button16
Default button for CPU 117
• The top LED (green) ashes when data is transmitted or received and is solid when a link is established.
• The lower LED (orange) indicates that PoE power is being supplied.
RP-TNC jack for connecting an antenna to Radio 1.MAIN antenna port for Radio 111
RP-TNC jack for connecting an antenna to Radio 1.AUX antenna port for Radio 112
A protective cover for the Ethernet port when it is not in use.
• The top LED (green) ashes when data is transmitted or received and is solid when a link is established.
• The lower LED (orange) ashes when a Wi-Fi tag is detected by the radio card.
A protective cover for the antenna port when it is not in use.RP-TNC antenna jack protective
Reset button for the unit. It will cause power to cycle without losing the device conguration.
Button to reset Radio 1's conguration back to factory defaults. Refer to Manual Reset and Reboot on page 40 for details.
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Understanding the NS50 Wireless Network Switch
FunctionDescriptionKey
Button to reset Radio 2's conguration back to factory defaults. Refer to Manual Reset and Reboot on page 40 for details.
Holes for mounting the NS50.Mounting holes19
Protective arm to lock bre port covers and cable connectors.
Thumbscrew for locking the bre port retention arm.Thumbscrew21
A protective cover for the composite bre port when it is not in use.
20
Default button for CPU 218
Composite bre port retention arm
Composite bre port cover22

1.2 System Layout

NS50 units are installed in a mine to form a wired and wireless network. This section describes a simple NS50 system layout in a mine.
The rst NS50 in a network is connected to an Ethernet switch and power supply via a JB11 junction box. (See Connecting power to the NS50 on page 31).
Units are typically connected in series down the mine tunnel by composite cable. When the mine tunnel splits into different sections, an additional NS50 is branched from the network. NS50 or Wireless Access Point (WAP) devices can also be positioned in Wi-Fi ‘hot spots’ such as crib areas and refuge bays.
A PC or mobile device can connect to the network when in proximity of an NS50 or WAP.

1.3 Connectivity

The NS50 has three types of network connections:
• Composite Fibre Ports
• Ethernet Ports
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Understanding the NS50 Wireless Network Switch
• Wireless

1.3.1 Composite Fibre Ports

Each side of an NS50 unit has two composite bre port connectors with a crush protection cover. Each connector consists of two electrical contacts and a duplex LC single mode optic bre (SMOF) receptacle.
Note: A protective cover or a mating cable connector must be attached to unused ports to maintain the IP65 (Ingress Protection) rating of the unit.
Each port can be connected in one of the following ways:
DescriptionPort connection
DC power only connection
Fibre only connection
Fibre and DC power connection
Fibre optic cabling provides numerous benets over Ethernet cabling, with superior signal integrity and no signal interference from high powered electronics. It also enables units to be spaced over longer distances without the distance limitation of Ethernet cabling.
By default, port 1 is congured as the upstream port and ports 2, 3 and 4 as the downstream ports. The difference between upstream and downstream ports is the orientation of the bre that is used for transmitting data and the bre used for receiving data.
A DC power cable to connect the PSU to the electrical contacts on an NS50. By convention, this cable is connected to port 4.
A bre optic cable terminated to the bre contacts of the NS50 composite connector.
A composite cable providing bre optic connectivity and power to the NS50.
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Understanding the NS50 Wireless Network Switch
Due to the difference in the bre orientation, MST composite cable and bre optic cable can only be connected between ports on NS50 devices marked with a tick in the matrix below.
Port 4Port 3Port 2Port 1
Port 1
Port 2
Port 3
Port 4
Single- and Multi-Mode Cables
The NS50 is supplied from the factory with 1000BASE-LX single-mode SFP modules. Customers wishing to interface to other cable standards, e.g. 100BASE-FX single or multi-mode, should contact MST to arrange replacement of the appropriate SFP modules.
DescriptionSFP Part Number (MST Order Number)
Single-mode 100BASE-FX SFP moduleW-SFP-LS38-A3S
Multi-mode 100BASE-FX SFP moduleW-SFP-LM38-A3S
Note:
• If replacing the single-mode SFP modules with multi-mode modules, the single-mode patch lead between the SFP module and the MST Composite Cable connector on the inside of the housing needs to be replaced with a multi-mode patch lead.
• JB11 junction boxes can be connected inline between any two units in the chain to supply power. There is no need to isolate NS50 units to a single power source.
Important: If an SFP is changed, the device must be rebooted or reset to detect the change.

1.3.2 Ethernet Ports

The NS50 has four external Ethernet ports, that enable connection to other networking devices.
The four Ethernet ports also provide IEEE 802.3af PoE (Power over Ethernet) injector functionality, allowing a single cable to be used for data and power to network devices. Each Ethernet port's functionality can be congured by the web browser interface, or by centralised conguration management. For more information on conguring Ethernet ports, see Conguring the VLAN Port Map on page 82.

1.3.3 Wireless Access

Wireless connectivity in each NS50 is implemented using a WAC (Wireless Access Card), consisting of a wireless network processor and an integrated mini PCI 802.11b/g adapter.
A NS50 can contain up to two WACs. The WAC contained in the rst radio card slot (on the left side) also acts as the management CPU for the switch processor. As such, it is mandatory that this WAC is tted to each unit. The WAC operational parameters can be congured through the web browser interface or by centralised conguration management. For more information, see Conguring Wireless Radio on page 68.
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Chapter
2

Network System Design

Topics:
•
Installation Types and Coverage
•
Power Requirements
•
Choosing Antennas
•
Placement of NS50 Units
•
Placement of Antennas
•
Determining Distances between Wireless Network Switches
This chapter describes network system design for underground mines.
An MST System Engineer will usually design and precongure a network based on the requirements and layout of each mine site. This will involve a visual inspection of the mine site to identify user areas, and determine access point locations. An RF (Radio Frequency) site survey is also conducted to understand the behaviour of radio waves in the mine. The following factors help determine network design:
• Wireless coverage requirements of the mine
• Quantity and type of wireless client devices connected to the network
• Wired client devices connected to the network and their location
• Interconnection to the mine's existing corporate network
• Policies for network protocol between networks
• Cabling requirements
• Antenna types to use with each unit and mounting method for each antenna
• Mounting location and installation method for each network device.
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Network System Design

2.1 Installation Types and Coverage

Wireless network coverage can be described as:
• Wi-Fi hotspot — Network coverage is provided in key areas, such as crib areas and refuge bays.
• Full coverage — Seamless wireless coverage by strategically placing NS50 units so their radio elds overlap.
A NS50 can communicate at wireless distances of 150-300 metres, depending on the geometry and geology of the mine.

2.2 Power Requirements

The power requirements for a network are unique to each site installation. Determining power requirements can be complex and is dependent on various factors such as the number of NS50 units, PoE devices, branches in the network and composite cable lengths.
Note: A site inspection conducted by a MST System Engineer will help determine the power requirements for your network.
The NS50 is designed to operate at a wide voltage range, from a minimum of 8VDC up to 54VDC. Each NS50 in a network can internally step up the incoming voltage to 48VDC in order to supply power to its connected PoE devices. The NS50 needs to receive a minimum input of 15VDC to power PoE devices.
48VDC power supplies are used for large networks to maximise the distance between power supplies. For smaller networks of 1-2 nodes, it is recommended that a lower voltage 24VDC power supply is used.

2.3 Choosing Antennas

Antennas are connected to each NS50 to provide wireless network coverage. The type of wireless coverage, surrounding geology, tunnel topology and stratum type are factors that will determine the choice of antenna. A minimum of one antenna is required per WAC in a NS50.
Antennas consist of two directional patterns:
• Omnidirectional antennas — radiate equally in all directions for a short range, providing immediate coverage in an open area.
• Directional antennas — radiate in a specic direction over a longer range. A higher gain antenna will have a longer range and is more directional. It is important that directional antennas are aligned properly between NS50 units to ensure continuous coverage between units.
The antenna radiation pattern and polarisation need to be considered to provide suitable wireless coverage in an area.
Antennas commonly used with the NS50 are shown below.
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Network System Design
DescriptionIllustrationAntenna Type
Omnidirectional
5.5 dBi rubber whips
Panel antenna
Diversity panel antenna
Yagi directional antenna
A lower gain antenna that radiates equally in all directions. It provides direct coverage in an open area.
A panel antenna is a directional antenna, with a wide horizontal beamwidth and narrower vertical beamwidth. They are suited for covering an open area in one direction.
A diversity panel antenna contains two panel antennas in one housing with a 90° rotation between them. It is used for providing better signal reception in difcult areas, and more accurate AeroScout tag location when Wi-Fi tracking is implemented. Diversity antennas use both antenna connections on a WAC.
A Yagi antenna is high gain directional antenna. They are ideally suited for line of sight tunnel communications. Yagi antennas need to be aimed accurately and avoid obstacles in their RF beam path.

2.4 Placement of NS50 Units

A site inspection will determine the best positioning of cables, NS50 units and antennas prior to installation. NS50 units with antennas directly attached should be mounted in an elevated position, within line-of-sight of mobile devices. Ideally this would be situated high up on a tunnel ceiling or on the rock wall face. The mounting location should be free from debris, and avoid obstruction to vehicles, equipment/machinery, vent tubing and cables.
NS50 units should not be installed in cut-out areas such as safety bays and remuck bays, due to signal connement. In such instances, a WAP is more suitable, connected to the nearest NS50. For details on common NS50 mounting scenarios, see NS50 Mounting Options on page 26.

2.5 Placement of Antennas

Antennas are usually mounted separately from each NS50 to optimise transmission and avoid any obstructions in a tunnel. They are connected by coaxial cable. The coaxial connection should be kept as short as possible to minimise signal attenuation. Larger antennas / longer cable feeds can require line ampliers, and possibly bi-directional splitter / combiners for dual antenna systems.
Antenna placement is dependent on the surrounding geology, tunnel topology and stratum type. The recommended placement of antennas is as follows:
Tip 1: Directionality
Antennas should be mounted and angled to give optimum transmission along curves and dips.
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Network System Design
Tip 2: Obstructions
Antennas should be mounted to avoid signal obstruction from rock, vehicles, equipment and machinery.
Tip 3: RF Field Overlap
Multiple antennas should be mounted to avoid crossing signal paths.
The positioning of the antennas is crucial when AeroScout tags are used for asset tracking and location services. AeroScout tags will not be read when there are antenna standing wave nulls. Antennas need to be positioned to have best reception of tag messages.
For Antenna mounting options, see Antenna Mounting Options on page 26.
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Network System Design

2.6 Determining Distances between Wireless Network Switches

Line of Sight Distances
In line of sight, each NS50 has a maximum wireless range of 300 metres (984 feet) using high gain directional antennas. NS50 units are generally installed with a 100 metre (328 feet) overlap of the radio eld. This ensures sufcient coverage between NS50 units.
NS50 units within range of each other must be congured with different Wi-Fi channels. By default every fth channel is used (channels 1, 6 and 11) to prevent signal overlap, minimising the possibility of inter-modulation or interference.
Distances Around Curves
The wireless range of a NS50 decreases when going around curves. In this case, NS50 units need to be installed closer together to provide sufcient coverage. Distances between NS50 units will vary depending on the drift and tightness of the curve. They are installed closer together on a tight curve.
Use the following steps to estimate the distance between NS50 units:
1.
Install one NS50 unit at the beginning of the curve.
2.
Install the second NS50 unit between 20 metres (65 feet) to 40 metres (130 feet) from the end of the curve.
3.
Install and align antennas.
4.
Perform an RF signal strength test by walking from the rst NS50 to the second NS50.
5.
If the strength test records levels of:
• -80dBm to -65dBm, the NS50 units are spaced for optimal coverage.
• -81dBm to -100dBm, move the second NS50 closer (at 10m intervals), and conduct another RF signal strength test.
• -64dBm to -10dBm, move the second NS50 further away, and conduct another RF signal strength test.
NS50 User Guide23Revision C
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Page 25
Chapter
3

Installation

Topics:
•
NS50 Mounting Options
•
Antenna Mounting Options
•
Installation Schemes
•
Connecting power to the NS50
•
Handling Composite Cable During Installation
•
Connecting Composite Cable to the NS50
•
Standard Composite and Fibre Cable Lengths
•
Connecting Ethernet Cable to the NS50
•
Connecting F-LINK Terminated Composite Cable to the NS50
•
Connecting Antennas to the NS50
•
Manual Reset and Reboot
This chapter describes mounting options, installation schemes, and antenna and cable connections. Fibre connector assembly and cable termination are beyond the scope of this manual.
Important: The electronic components in each NS50 have been designed to be isolated from the enclosure and local electrical earth. This ensures there is no current passing between grounds of different potentials (known as galvanic isolation). Galvanic isolation must always be maintained, with the NS50 ground terminals isolated from electrical earth, and all antenna and antenna cable connections properly insulated.
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Installation

3.1 NS50 Mounting Options

Standard mounting options for the NS50 are described in the table below.
InstallationApplication
Mounting the NS50 to a rock bolt
Mounting the NS50 to the mesh
The NS50 has two 25mm holes to mount to a rock bolt in the mine's rock face. It is secured to the rock bolt with a 25mm nut.
The four corner mounting points on a mounting plate can be cable-tied to the mesh in a mine tunnel.

3.2 Antenna Mounting Options

Antenna mounting is dependent on the location and coverage required. Examples of antenna installation options are described and illustrated in the table below.
PictureDescriptionMounting Option
Mounting a Yagi antenna or panel antenna to the mine tunnel roof.
1.
The Yagi antenna is attached to the mounting pole using U-clamps and nuts.
2.
A threaded metal bar is screwed into the mounting pole.
3.
A hole is drilled into the tunnel roof and the mounting pole is secured using chemset adhesive.
Mounting a Yagi antenna or panel antenna in a stope or tunnel entrance.
1.
The Yagi antenna or panel antenna is attached to the mounting pole using U-clamps and nuts.
2.
The mounting pole is bolted to a metal bracket.
3.
The metal bracket is bolted to a mine tunnel entrance or roof using three M12 Dynabolts. This mounting method enables angling of the antenna into a mine tunnel or stope.
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Installation
PictureDescriptionMounting Option
Mounting a panel antenna on the rockface.
The panel antenna is cable tied the mesh.

3.3 Installation Schemes

The installation and placement of antennas and NS50 units will depend on the wireless coverage type, rock type and tunnel topology. A few examples of installation schemes in a mine are described and illustrated in the following sections.

3.3.1 Installation in a Straight Drive

• Two Yagi antennas are clamped to a mounting pole, which is chemically adhered into the mine roof.
• The antennas are positioned in opposite directions to provide long range wireless coverage.
• Each antenna is connected to a separate WAC in the NS50, or a Wi-Fi signal splitter can be used to split the signal from one WAC in two directions.
• The network switch is cable tied to the rock mesh and connected to the composite cable that provides power and network connectivity.
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Installation

3.3.2 Installation in a Curved Decline / Incline

• A Yagi antenna is positioned at the end of the curve for directional wireless coverage.
• The Yagi antenna is clamped to a mounting pole, and is chemically adhered into the mine roof.
• A panel antenna is roof mounted in the middle of the curve providing wide wireless coverage.
• Each antenna is connected to a WAC in the NS50.
• The network switch is cable tied to the rock mesh, connected to the composite cable that provides power and network connectivity.
• The network switch is also a link for power and network connectivity to devices in the next location.
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Installation

3.3.3 Installation in a Stope

• A panel antenna is clamped to a mounting pole, and is chemically adhered into the mine roof.
• The panel antenna is angled down into the stope to provide wide wireless coverage.
• A Yagi antenna is installed in the roof providing directional coverage down a straight drive.
• Each antenna is connected to a WAC in the NS50. The network switch on a mounting plate is attached to a rock bolt.
• The composite cable supplies power and network connectivity to the switch.
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Installation

3.3.4 Installation at an Intersection

• A panel antenna is clamped to a mounting pole, and is chemically adhered into the mine roof.
• The panel antenna is angled to provide wide wireless coverage at an intersection.
• A Yagi antenna is installed in the roof providing directional coverage down a straight drive. Each antenna is connected to a WAC in the NS50.
• The network switch is cable tied to the rock mesh, connected to the composite cable that provides power and network connectivity.
• The network switch also acts as a link for power and network connectivity to devices in the next location.
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Installation

3.4 Connecting power to the NS50

A pre-deployment power-up test of NS50 units is recommended. To conduct a power-up test:
1.
Connect the composite bre/power cable to a DC power source with correct termination. Note that the DC supply must be between 10 and 50VDC.
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Installation
2.
Turn on the DC power supply and verify that the green power light is on. If there is no green light, refer to Troubleshooting Guide on page 93.
Power can be applied to cabling whilst additional NS50 units are being installed. Power usage levels should be evaluated prior to adding more units downstream to ensure that the voltage rail does not drop too low. A minimum of 15VDC is required for a NS50 to supply PoE to other devices. If the voltage drops below 15V, additional power is required.

3.5 Handling Composite Cable During Installation

The composite cable is ruggedly built for the mining environment. However the following precautionary measures should be noted during installation:
• Never pull or create tension on the cable. Unreel the cable from the cable reel, or allow the weight of the cable to unreel as the vehicle is moving.
• Do not bend the cable at sharp angles; excessive bending can fracture or break the bre optic cable.
• Do not step on the cable.

3.6 Connecting Composite Cable to the NS50

A composite cable is connected to the bre port of an NS50. Once connected, it will auto detect devices and their settings.
The following procedure illustrates composite cable connection when there is power being supplied downstream in the network.
Important: Protect all connectors and sockets from dust and grit, with minimal exposure during installation. Any unused sockets must be covered by the supplied dust caps at all times.
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IllustrationProcedureStep
1
2
Loosen the thumbscrew on the retention arm.
Slide out the retention arm from the NS50.
3
4
Push down on the locking catch for the port and remove the cover.
Align the pins on the connector to the composite bre port.
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IllustrationProcedureStep
5
6
7
Insert the cable into the composite bre port, and push the locking catch to the connector. The power LED will turn on, and corresponding bre port link LED will light up green. The port activity LED will ash with network activity.
Repeat steps 3 to 5 for connecting downstream cables from this unit.
Note: If a NS50 is installed at the other end of the downstream cable, the bre link LED will light up green. The bre activity LED will ash with network activity.
Slide the retention arm back into the unit and screw the locking nut tight.
Connecting a NS50 to a branch NS50 requires simply connecting composite cables to the additional bre ports. The connected bre ports will cause the corresponding bre port LEDs to become active. If you are adding NS50 units to an existing system, please consult your MST System Engineer to ensure power requirements are being met.

3.7 Standard Composite and Fibre Cable Lengths

While custom cable runs can be made where necessary, it is faster and cheaper to use the following standard cable lengths supplied by MST:
Table 1: Composite Cable
Composite Cable LengthPart Number
80mW-CFC-006-T80
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Table 2: Fibre-Only Cable
Installation
Composite Cable LengthPart Number
125mW-CFC-006-T125
175mW-CFC-006-T175
250mW-CFC-006-T250
325mW-CFC-006-T325
Fibre Cable LengthPart Number
100mW-CFC-007-T100
175mW-CFC-007-T175
325mW-CFC-007-T325
650mW-CFC-007-T650

3.8 Connecting Ethernet Cable to the NS50

The external Ethernet ports are located on the underside of the NS50, and are used to connect to Ethernet devices (such as computers, Ethernet controlled PLCs, hard-wired Ethernet Phones and IP video devices). An Ethernet cable with a RJ45 connector is used to connect PoE devices. Ethernet cables are required to meet specications for use in a mining environment in Ethernet Cable Specications on page 97.
The following procedure demonstrates how to connect an Ethernet cable to the NS50.
IllustrationProcedureStep
1
Unscrew the protective cover on the Ethernet port.
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IllustrationProcedureStep
2
3
Insert the Ethernet cable (with a bayonet back-shell) into the Ethernet port.
Align the protective cover on the cable to the notch in the mating jack on the NS50, and twist to lock the connector.
Important: Check that all unused Ethernet ports remain protected with the supplied covers.
4
Securely fasten the cable lead against the wall/ceiling.

3.9 Connecting F-LINK Terminated Composite Cable to the NS50

Connecting NS50 units to networks with existing WNS units requires a JB14 Junction Box, supplied by MST, to act as an adaptor between the existing F-LINK terminated cable and the revised MST Composite connector. The JB14 has four 10mm mounting holes and can be bolted to a at surface or cable-tied to the mesh in a tunnel.
Note: The composite cable must be connected and locked into place before the JB14 is attached to a surface.
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IllustrationProcedureStep
1
2
Release the catch on the composite bre/power cable port and remove the cover.
Align the pins on the connector to the composite port.
3
4
Insert the cable into the composite port, and push the locking catch to the connector.
Remove the protective cover from the F-LINK cable port.
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IllustrationProcedureStep
5
6
Align the F-LINK connector with the port.
Insert the connector and spin the connector cover clockwise to secure the cable to the port.
7
Attach the JB14 to a at surface or tunnel mesh using the mounting holes.

3.10 Connecting Antennas to the NS50

Antennas can be connected directly to the coaxial (RP-TNC) jacks on the unit or mounted remotely by using coaxial cables. Coaxial cable length should be kept as short as possible (ideally less than 10m) to minimise signal loss.
Important: All cable and antenna connections must be electrically insulated using self-amalgamating rubber tape.
The following procedure describes how to connect a coaxial cable to the NS50 and electrically insulate the connection.
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IllustrationProcedureStep
1
2
Remove the dust cap from the antenna port.
Connect the coaxial cable plug to the RP-TNC jack on the NS50 and tighten the outer sleeve.
3
4
Insulate the connection using self-amalgamating rubber tape. Start at the base of the connection and pull back the rubber tape backing.
Pull the tape tightly, and tape around the connector at an angle until it is 25mm past the end of the connection.
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IllustrationProcedureStep
5
6
Wind the rubber tape at an angle back down towards the base of the connection and cut the tape.
Cable tie and mount the coaxial cable(s) so it is free from obstructions.
Important: Check that all unused antenna ports remain covered with the supplied dust caps. Check there are no obstructions near the antennas that could hinder the radiation pattern.

3.11 Manual Reset and Reboot

The NS50 can be manually power cycled or reset to factory default settings as described below.
PictureDescriptionStep
1
Locate and identify the Reset button and the Factory Default buttons for CPU 1 and CPU 2.
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PictureDescriptionStep
2
3
To reset the NS50 (i.e. power cycle), press and release the Reset button whilst the unit is powered up.
To reset to factory default settings whilst the unit is powered up, press and hold both the Reset and CPU Default button. Release the Reset button while continuing to hold the CPU Default button for another 5 seconds.
Note: This procedure must be performed on each CPU to reset it to factory default settings.
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Chapter
4

Understanding VLANs

Topics:
•
Understanding Trunk and Access Ports
•
VLANs and Wireless Networks
•
Native VLAN
This chapter explains the principles behind a Virtual Local Area Network (VLAN). It is important to understand VLANs to properly congure the wireless network switch.
A VLAN is a collection of nodes grouped according to their function or application, rather than their physical location. They are grouped in order to separate and prioritise data within a network.. VLANs are created when multiple applications, such as voice, telemetry, data and video, are required in a mining network.
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4.1 Understanding Trunk and Access Ports

VLANs can be assigned to trunk ports and access ports on a network. These two types of allocation determine how data is transmitted and relayed.

4.1.1 Trunk Ports

Trunk ports typically provide a connection between network switches, and can carry data for multiple VLANs. They will only transmit frames (packets of data) that belong to the port's assigned VLANs. To identify the VLAN of each frame, a network switch adds a tag to the frame (known as 802.1Q trunking). The tag contains the following information:
• VLAN ID — allows the network switch receiving a frame to identify the VLAN it belongs to.
• Priority ID — allows the network switch to prioritise distribution when multiple frames are being transmitted. Priority ID ranges from 0-7, where 7 is the highest priority.
When a network switch receives a tagged frame, the tag is read to determine the VLAN it belongs to. The tag is removed and distributed to devices connected on the same VLAN.
When the network switch receives multiple frames, it will prioritise the distribution of frames based on the Priority ID in the VLAN ID tag. For more information on conguring VLANs, see Dening VLANs on page 81.

4.1.2 Access Ports

Access ports connect client devices such as PCs and laptops to the network switch, and can only be assigned to a single VLAN. Access ports can only send and receive untagged frames, with those frames allocated to the relevant VLAN inside the switch. Any tagged frames sent to an access port will be dropped.
An example of VLAN trafc ow through trunk and access ports is shown below.
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1.
A PC sends an untagged frame into access port 6 (Control VLAN) on wireless network switch 1. The frame is sent to other access ports on the Control VLAN (access port 5).
2.
Wireless network switch 1 tags the frame with VLAN ID = 4 and Priority = 5 and sends it through the trunk ports to Wireless network switch 2.
3.
Wireless network switch 2 receives the tagged frame, and identies the frame belonging to the Control VLAN.
4.
Wireless network switch 2 removes the tag and sends the frame to all ports on the Control VLAN (access ports 5 and 7).
5.
If Wireless network switch 1 receives multiple frames, they are tagged and sent via trunk ports to Wireless network switch 2.
6.
Wireless network switch 2 receives the frames and prioritises distribution.

4.1.3 Port Allocation

Physical ports on the NS50 can be congured to be either a trunk port or access port using the web browser interface or editing site conguration les when Trivial File Transfer Protocol (TFTP) is used. The NS50 default conguration has ports 1-8 allocated as trunk ports. Ports 1-4 are usually connected to other NS50 units, and ports 5-8 are connected to WAPs or other PoE devices. For more information on conguring ports and VLAN membership, see Conguring the VLAN Port Map on page 82.
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4.2 VLANs and Wireless Networks

The wireless network switch can have up to four wireless Service Set Identiers (SSIDs) per WAC. Each SSID is associated with a single VLAN and functions as an access port on that VLAN.
1.
An untagged frame is sent from a Laptop 1 through a wireless network (SSID = Data) on the network switch.
2.
The frame is tagged by the network switch and is sent through the trunk port to the WAP.
3.
The WAP identies the tagged frame as belonging to the Data VLAN and removes the tag.
4.
The untagged frame is sent via the wireless network (SSID = Data) to Laptop 2.

4.3 Native VLAN

Trunk ports on the wireless network switch also support a Native VLAN. The Native VLAN is where untagged frames will be allocated. On the network switch, the native VLAN is always the Infrastructure VLAN. This allows client devices such as PCs or laptops to access and manage the network switch when they are connected via a trunk port.
The Infrastructure VLAN is mandatory in the network switch and cannot be deleted.
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1.
The PC sends an untagged frame to Trunk port 3 on wireless network switch 1.
2.
The frame is allocated to the Infrastructure VLAN.
3.
The management CPU of wireless network switch 1 is always an Access port on the Infrastructure VLAN and will receive the frame.
4.
The untagged frame would also go to wireless network switch 2 via the Trunk ports between the network switch units.
5.
Wireless network switch 2 allocates the untagged frame to the Infrastructure VLAN.
6.
The management CPU of wireless network switch 2 is always an Access port on the Infrastructure VLAN and will receive the frame.
7.
Any frame leaving the Management CPU is placed on the Infrastructure VLAN.
8.
All frames on the Infrastructure VLAN are sent out untagged on Trunk ports.
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Chapter
5

Configuration Using the Web Interface

Topics:
•
Logging onto the Web Browser Interface
•
Configuration screen
•
Status Tab
•
Tools Tab
•
Settings Tab
This chapter describes how to congure an ImPact network device using a web browser. Please note that screenshots may vary slightly from those shown, depending on your current rmware version.
The ImPact NS50 and WAP have a built-in web-server that is accessible by a PC to congure settings. A PC can access the web browser interface by making a TCP/IP connection to the device. For more information, see Connecting a PC to an ImPact Network Device on page 105.
The IP address of the network device can be located and congured using the MST Device Scanner tool. For more information on how to use the Device Scanner, see Device Discovery on page 99.
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5.1 Logging onto the Web Browser Interface

The web browser interface has a login front screen with access at two levels:
• ADMIN — Allows settings to be viewed and modied. The default password is ‘admin’.
• USER — Allows settings to be viewed but not modied. By default there is no password.
Note:
• Login and conguration needs to be carried out for each WAC tted to the wireless network device. Each WAC has a unique MAC address and should be congured with a unique IP address.
• By default, the NS50 is congured to use DHCP. To nd the IP address of a newly connected device, use the MST Device Scanner.
• Devices running rmware 2.24.0 or earlier may default to 192.168.1.90.
To log in to the web browser interface:
1.
Launch your web browser and enter http://<WAC IP address> in the address eld.
2.
The login screen is displayed.
3.
In the LOGIN dialog box, select Admin from the User Name drop-down box, and type the password in the Password eld. The factory default password is admin.
4.
Click Log In. The Wireless Radio Settings screen will be displayed.

5.2 Configuration screen

After logging on, the SETTINGS > WIRELESS RADIO screen is displayed by default. This screen will be covered later in the chapter.
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The conguration screens are divided into three section tabs across the top:
• STATUS — Displays device information, wireless clients, system logs, network trafc statistics and the most AeroScout Engine data and tag reads.
• TOOLS — Web screens to congure password access, time settings, restoring factory defaults, and rmware upgrades.
• SETTINGS — Screens to manage device conguration, SNMP, networking and tracking settings.

5.3 Status Tab

5.3.1 Obtaining Device Information

The Device Info status screen displays system time, rmware version, LAN and wireless LAN summary information.
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Note: Changes in status display are dependent on the web browser. Some web browsers may report an error when obtaining WLAN status, or require to refresh the web browser screen.

5.3.2 Wireless Client Information

The Wireless status screen displays current information about wireless clients connected to the access point.
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• MAC Address: The address of the client device.
• Mode: Indicates if the client device is in 802.11b or 802.11g mode.
• Rate: The data rate for the connection in Mbps.
• Signal: The percentage signal strength of the client device, as received by the access point.
Note: The Wireless Client Device List groups the devices by the wireless SSID with which they are associated.

5.3.3 Viewing System Logs

The Logs screen displays the device logs. It is possible to lter by the type of logged events and the event level.
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To dene LOG OPTIONS:
1.
In the What to View elds, select the System check box.
2.
In the View Levels eld, select the check boxes on the reporting levels required.
3.
Click Apply Log Settings Now.
To view LOG DETAILS:
1.
Click Refresh to update the list.
2.
Click Clear to clear the list. A conrmation message box is displayed.
3.
Click OK to continue.
4.
Click Save Log to save the log as a text le. A log of the clear action is recorded. Any changes made to the log characteristics are also recorded in the log.

5.3.4 Viewing Network Traffic Statistics

The Statistics status screen provides network trafc statistics for the WAC's LAN interface and each of the wireless SSIDs.
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To view statistics:
1.
Click Refresh Statistics to update the statistics.
2.
Click Clear Statistics to clear displayed statistics. A reset conrmation dialog box is displayed.
3.
Click OK.
The following parameters are displayed:
• LAN STATISTICS
• Sent: The number of frames sent out from NS50 via all physical network interfaces (Ethernet and
Fibre).
• Received: The number of frames received by the NS50 via all physical network interfaces.
• TX Packets Dropped: The number of frames dropped while being sent to the switch processor,
due to errors, collisions, or network switch resource limitation.
• RX Packets Dropped: The number of frames dropped while being received from the switch
processor, due to errors, collisions, or network switch resource limitation.
• Collisions: The number of frames dropped due to Ethernet collisions.
• Errors: The number of transmission failures that caused the loss of a packet.
• WLAN STATISTICS
• SSID: The ID of the wireless network.
• Sent: The number of frames sent out from the SSID.
• Received: The number of frames received by the SSID.
• Rx Errors: The number of frames dropped while being received.
• Tx Dropped: The number of frames dropped while being sent.
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5.3.5 Viewing Ethernet Switch Information

The Switch status screen displays general switch information. Switch information can only be accessed for the WAC in slot 1 of the Network Switch. It displays the following parameters:
• The temperature inside the switch processor
• The voltage of the supply rail
• The voltage of the PoE rail (This will read as 0 (volts DC) if PoE is disabled)
• The vendor and part number for each of the SFP modules
• The link, speed, duplex and PoE power status for each switch port.

5.3.6 Viewing Switch Traffic

The Switch Trafc screen shows current trafc statistics for each network port.
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5.3.7 Viewing Tracking Information

The Tracking status screen displays the status of the tracking servers that are registered to the network device.
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5.3.8 Viewing Recent Tag Reports

The Tags status screen displays the last ten AeroScout tag reads when asset tracking and location services are enabled.
The following information is displayed:
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• MAC Address: MAC address of the tag being read.
• RSSI: Received Signal Strength Indicator (RSSI) is a measurement of the quality of the received radio signal.
• Sequence: The sequence number of the tag transmission.
This screen assists to verify the following:
• The device is detecting AeroScout tags.
• Tag reports are generated for a particular tag by viewing sequence number.
• Received RF signal strength.

5.4 Tools Tab

5.4.1 Configuring Administrator and User Settings

The administrator and user login can be congured on the Admin conguration screen. The device conguration can also be saved to or restored from a conguration le.
Passwords
The administrator and user password are used to restrict access to the web browser management tool. It is recommended to create new password for both administrator and user.
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1.
Under ADMIN PASSWORD, enter the administrator password in the Password and the Verify Password elds. Administrators have full access to the web browser interface.
2.
Under USER PASSWORD, enter the user password in the Password and the Verify Password elds. Users have read-only access to the web browser interface.
3.
Click Save Settings.
Saving and Restoring Configuration Settings
The Admin conguration screen allows network switch settings to be saved as a .gws le. Saved conguration les can be used to restore settings to the device.
To save network switch settings as a conguration le:
1.
Click Save Conguration. A File Download dialog box is displayed.
2.
Click on Save. Select a folder to save the conguration le and click Save.
To restore the conguration of a device:
1.
Click Choose File and locate the previously saved .gws conguration le. The Choose File to Upload window will open.
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2.
Select the le and click Open.
Conguration Using the Web Interface
3.
Click Restore Conguration from File. The device will upload the conguration le. The SUCCESS screen is displayed.
4.
Click Reboot the Device and then OK to reboot or click Continue to return to the previous conguration screen. Rebooting the device will end the current conguration session.

5.4.2 Setting the Time

The Time conguration screen is used to dene regional time settings on the device.
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To set the time conguration settings:
1.
Select the appropriate time zone from the Time Zone drop-down box.
2.
Click Enable Daylight Saving check box if the selected region has daylight saving. Daylight saving options will be displayed.
3.
Select the Daylight Saving Offset in the drop-down box.
4.
Select the region's DST Start date and DST End date.
5.
Click Save Settings.
To enable Automatic Time Conguration, tick the Enable NTP server checkbox, and enter an NTP server address or select one from the dropdown menu.
Note: If an NTP server is enabled, any manual changes to the time will be overridden the next time the device synchronises with the server. To keep a manually set time, Enable NTP Server should be unchecked.
To Set the Date and Time Manually, select the appropriate date and time settings from the dropdown boxes, or click Copy Your Computer's Time Settings.
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5.4.3 Rebooting or Restoring the Network Device

The System conguration screen enables the device to be rebooted or restored to the factory default settings.
Click Reboot the Device to reboot the device. Any unsaved settings on the device will be lost and the connection will terminate.
Click Restore all Settings to the Factory Defaults to restore the device to default settings. All current settings will be erased.

5.4.4 Upgrading Firmware

Device Firmware can be upgraded from the Firmware upgrade screen as shown below. The rmware is a binary (.bin) le format.
Note:
• WAC 1 must be upgraded before WAC 2. Complete steps 1-4 for for every WAC on the network that you are upgrading, then move onto step 5.
• Firmware upgrades may reset the network device to default factory settings (please refer to the rmware release notes to determine if this will occur).
• It is STRONGLY recommended to install ICA 1.4.1 (or greater) at the site and use the central conguration management capability to re-apply device settings. See Device Management
Overview on page 86 for more detailed instructions.
• For devices that are not managed by the ICA, conguration settings can be saved before updating rmware and restored after the update from the TOOLS > ADMIN screen. For more information, see Saving and Restoring Conguration Settings on page 60.
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Note: Before starting this procedure, note the following
• The device's MAC address (visible in STATUS > DEVICE INFO)
• Settings on the device that differ from the Site Defaults
Centralised configuration checklist
• Conrm all required template settings in the Conguration > AP Cong Templates editor.
• In Devices > Access Points , select the device, tick the Manage Conguration checkbox and select the correct template.
• If required, click Edit Overridden Parameters and edit any required parameters for the specic device.
• Save the new settings.
• Wait for the device's Managed status to change from PENDING to CURRENT.
Note: As a template can be applied to multiple devices, it is xed to DHCP for networking to avoid address conicts. If static IP addresses are required, these must be set in the individual devices' overridden parameters.
It is recommended that a client device (PC or laptop) has a wired connection to the network device to upgrade the rmware. Please contact your MST System Engineer for rmware les.
To upgrade the rmware:
1.
Click Choose File. A dialog box will open.
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Select the binary (.bin) rmware le and click Open.
Conguration Using the Web Interface
3.
Click Upload, then OK on subsequent dialogue boxes to conrm. The rmware will upload to the device.
4.
When the rmware has been successfully uploaded, the UPLOAD SUCCEEDED screen will appear. The network switch will reboot after 60 seconds.
5.
Check the device's IP address in the Device Scanner to ensure that it has been correctly updated. (See
Device Discovery on page 99). This address must match the IP address entered in the AeroScout
System Manager for tracking to work.
6.
Log back on to the device's web interface, and check the STATUS > LOGS screen for any errors that may need to be addressed.
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5.5 Settings Tab

5.5.1 Managing Automatic TFTP Configuration

The Cong Management screen is used to congure how the device retrieves its conguration from a TFTP server on the network. For more information on TFTP, see Centralised Conguration Management on page 85.
Note: These settings only affect TFTP conguration from a ICA v1.3.1 or earlier, and 3rd party TFTP servers. If using AP Cong Templates from ICA 1.4.0 or later, leave Self check disabled (See Device Management Overview on page 86).
Self Check Settings
To enable automatic conguration from a TFTP server, tick the Self check enabled checkbox, enter the desired Self check interval and TFTP Server Address, then click the Save Settings button.
Change Numbers
The two change numbers shown here are timestamps (formatted as YYYYMMDDhhmmss) showing the last time the device's settings were updated via TFTP. The Site Change Number refers to general site settings applied to all devices, whereas the Device Change Number refers to specic settings applied to this device.

5.5.2 Configuring SNMP Settings

The SNMP screen contains Simple Network Management Protocol settings. SNMP is a protocol used by the ICA and 3rd party SNMP browsers to monitor the status of compatible devices on the network. At present, the ICA only uses this protocol to monitor for Port Up/Port Down errors on the NS50, and is not affected by the settings below.
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The following settings are available, which may affect 3rd party SNMP tools:
• Name: The name or ID of the device
• Contact: The name of the person to be notied of any alarms
• Location: The location of the device
• Community String: The group to which the device belongs. Unless otherwise necessary, this is usually left as public.

5.5.3 Setting Up the LAN

The LAN conguration screen is used to congure Local Area Network settings.
To edit LAN settings, click in the selected eld in the dialog box. LAN settings are described in the table below.
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Recommended SettingsDescriptionField
DHCP (Dynamic) or Static IP (Manual)Get LAN IP from
The IP address of the WAC.IP Address
Subnet Mask
belongs to for the WAC.
Gateway
Primary DNS
Secondary DNS
Name
If the device is left on DHCP, only the following elds are shown. These values will function as above, only if they are not dened by the DHCP server.
The IP address of the default gateway to be used by the WAC.
The DNS server used by the WAC when looking up host names.
The backup DNS server used by the WAC when looking up host names.
Local domain name for the network.Local Domain
Default is DHCP. If Static IP is selected, the following elds must be lled in.
A different IP address is required for each WAC in a network.
The default subnet mask is 255.255.255.0.Identies the subnet the IP address
Settings are dependent on the site's network design.
Settings are dependent on the site's DNS design.
Settings are dependent on the site's DNS design.
Leave the eld blank if you do not wish to add a domain name.

5.5.4 Configuring Wireless Radio

The Wireless Radio conguration screen congures wireless radio settings.
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To congure the wireless radio:
1.
Select the Enable Wireless Radio check box to enable wireless.
2.
To change wireless radio settings, edit the required elds. A description and recommended settings are shown below.
3.
Click Save Settings.
Recommended SettingsDescriptionField
Used to enable or disable the WAC's radio.Enable Wireless
Radio
Region
Limits available channels to those allowed by local regulations
Select the correct region for the site location.
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Recommended SettingsDescriptionField
Rate
802.11 Mode
Transmit Power
Transmit Antenna
Settings to congure how fast data is transmitted.Transmission
A drop-down box to select the 802.11 mode from mixed 802.11g and 802.11b to 802.11g.
Used to control the power delivered via the wireless transmitter.
of wireless frames. The options are:
• Main: The MAIN antenna will always be used for transmission.
• Aux: The AUX antenna will always be used for transmission.
• Diversity: The radio will determine the best antenna to use for transmission based on the signal strength of recently received frames from both antennas.
Leave the default setting as Best (automatic) for data transmission at the best possible speed.
If there are 802.11b wireless client devices, leave the setting at Mixed. Select 802.11g for improved performance if all wireless client devices are 802.11g capable.
See section below.See section below.Super AG Mode
High - Only drop to Medium or Low if the signal is interfering with other devices.
MainDenes the antenna to be used for transmission
Receive Antenna
Important: Ensure that the physical connection of antennas is consistent with the transmit and
receive antenna settings. Failure to do so will give poor Wi-Fi performance and reduced tracking accuracy.
Super AG Mode
Super AG is Atheros' proprietary frame-bursting, compression, and channel bonding technology to improve Wi-Fi wireless LAN performance. This can dramatically improve the throughput of wireless trafc.
• Disabled – Standard 802.11g support, no enhanced capabilities.
• Super AG without Turbo – Default - Capable of Packet Bursting, FastFrames, Compression, and no Turbo mode.
• Super AG with Dynamic Turbo – Channel 6 ONLY - Capable of Packet Bursting, FastFrames, Compression, and Dynamic Turbo. This setting is backwards compatible with non-Turbo (legacy) devices. Dynamic Turbo mode is only enabled when all devices on the wireless network are Super
Denes the antenna to be used for the reception of wireless frames. The options are:
• Main: The MAIN antenna will always be used for reception.
• Aux: The AUX antenna will always be used for reception.
• Diversity: Both antennas will always be used for reception and the received frame with the best signal strength will be used.
Main: if a single antenna is tted.
Diversity: if antennas are tted
to both of the radio's ports.
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AG with Dynamic Turbo enabled. In Turbo mode, the access point doubles the channel bandwidth to increase the throughput.
• Super AG with Static Turbo – Channel 6 ONLY - Capable of Packet Bursting, FastFrames, Compression, and Static Turbo. This setting is not backwards compatible with non-Turbo (legacy) devices. Static turbo mode is always on and is only enabled when all devices on the wireless network are Super AG with Static Turbo enabled.
Channels
It is recommended that WACs in proximity of each other have different wireless channels (for example, channels 1, 6 and 11). This minimises signal overlap and the possibility of interference.
Advanced Wireless Settings
Recommended SettingsDescriptionField
Fragmentation Threshold
RTS threshold
DTIM interval
Burst Time
802.11d enable
Maximum frame size that can be sent without fragmentation.
protocol issues to an RTS packet.
A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages. Wireless clients detect the beacons and awaken on the DTIM interval to receive the broadcast and multicast messages. Valid settings are between 1 and 255.
data without stopping. Note that other wireless cards in that network will not be able to transmit data for this period.
Wireless specication where conguration occurs at a MAC layer level to comply with country or district rules.
Default setting is at the maximum size of 2346 and is recommended for most environments.
Default setting is 2346.Determines what size data packet the low level RF
Default setting is 100ms.The amount of time between beacon transmissions.Beacon Period
The recommended DTIM interval is 1.
Default 3000μs (0.3s)The time in microseconds which will be used to send
802.11d is not enabled by default.

5.5.5 Configuring Wireless Networks

A WAC can have up to four wireless SSIDs with different performance and security settings. Each can be mapped to different VLANs.
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A description of the wireless network parameters are described in the table below.
Recommended SettingsDescriptionField
Click on the Enable check box to enable the wireless network.
Click on the Visible option button to enable wireless network visibility.
Keep Enabled unless multicast trafc is adversely affecting network performance.
Visibility Status
Retransmit Multicast
Enables or disables the wireless network.Enable
Enables or disables visibility of the wireless network to client devices within range.
• Enabled - The access point will retransmit any multicast received from a wireless client back out to all wireless clients.
• Disabled - The access point will only forward wirelessly received multicast packets out the wired interface. This can signicantly improve the throughput in networks with a high volume of multicast trafc that does not need to be sent to
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clients sharing this access point (e.g. Pronet/Minegem), but it will prevent Minephones from making Push–To–Talk calls to other Minephones currently on the same access point..
Recommended SettingsDescriptionField
Multicast Tx Rate
Station Idle Timeout
Wireless Network Name
The rate at which to transmit multicast trafc out over the wireless link in Mbits/s (turbo rate). Higher data rates will increase transmission speed but decrease the range at which the transmissions can be received.
The number of seconds before a wireless device (e.g. a MinePhone or Data Logger) will time out from the Access Point.
The SSID of the wireless network that is used by client devices.
Four security modes exist:Security Mode
• None: No wireless authentication is required and trafc is not encrypted.
• WEP: is the original wireless encryption standard. This is rarely used.
• WPA Personal: provides a higher level of security and does not use a centralised authentication server.
• WPA Enterprise: as per WPA Personal but a RADIUS authentication server is used.
1 Mbit/s - Only raise this if there are issues with multicast trafc throughput.
Default 300s. Lower times may improve roaming performance, but will generate more network trafc.
Enter a network name that relates closely to its function. For example, "MST-VOICE".
WPA-Personal is recommended. Selecting the wireless security mode will display conguration options.
Note: After a unit is reset to factory defaults, it will have a single wireless network on channel 6 with the name "AP------" (the last six digits of the unit's MAC address), WPA2-AES security enabled and the password "minesite".
Configuring WPA Settings
WPA provides a higher level of security. WPA-Personal and WPA-Enterprise are variants of Wi-Fi Protected Access (WPA). WPA-Enterprise requires an external RADIUS server.
To congure WPA settings:
1.
Select the WPA mode from the drop-down box.
2.
Select the Cipher Type from the drop-down box. By default it is set at AES.
3.
Enter Group Key Update Interval in the supplied eld. By default it is 3600 seconds. This is the amount of time before the group key (used for broadcast and multicast data encryption) is changed.
4.
Enter the Pre-Shared Key in the supplied eld (applicable to WPA Personal security mode). The key must be at least 8 alphanumeric characters in length.
5.
Click Save Settings.
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Configuring WEP Security Settings
To congure WEP security settings:
1.
Click on the WEP option button.
2.
In the WEP Key Length drop-down box, select 64bit or 128bit. 128bit is a more secure encryption type.
3.
Enter the password for the WEP Key number that will be used.
4.
Select the Default WEP Key from the drop-down box.
5.
Select Authentication from the drop-down box. By default it is set to Open, which is more secure than Shared.

5.5.6 Configuring EAP (Extensible Authentication Protocol)

The Wireless EAP conguration screen is used to congure wireless authentication by a RADIUS server (as used by WPA Enterprise).
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To congure wireless EAP, click on the drop-down boxes in the supplied elds. Click Save Settings to save settings. A description of the elds and settings are described in the table below.
Recommended SettingsDescriptionField
Authentication Timeout
RADIUS server IP Address
RADIUS server Port
RADIUS server Shared Secret
MAC Address Authentication
A second RADIUS server can be congured if the primary server is not available or not responding. This can be congured by clicking on the Advanced button.
Amount of time in minutes before a client device is required to re-authenticate.
server.
Port number used by the access point to connect to the authentication server.
Password used by the access point to access the RADIUS server.
Access to the RADIUS server by conrmation of the client device's MAC address.
Setting is at 120 minutes by default.
This is specic to each site.IP address of the authentication
By default the port number is
1812.
Password that matches with the authentication server.
If selected, the user must always use the same device when connecting to the wireless network.
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5.5.7 WDS (Wireless Distribution System) settings

The Wireless Distribution System (WDS) feature allows ImPact network devices to connect wirelessly where a bre or ethernet connection is not practical. Up to six devices can be congured.
To congure WDS settings:
1.
Click in the WDS Enable check box.
2.
Under WDS Security section, enter the wireless network name (SSID).
3.
Select the Security Mode and enter the authentication details.
4.
Under WDS Ports, enable the required number of ports and the MAC address of each network device that the device will use WDS to connect to the network.
5.
Click Save Settings.
Note: WDS links always operate as trunk ports with all VLANs passing across the trunk.

5.5.8 Configuring Asset Tracking and Location Based Services

The Tracking conguration screen establishes where AeroScout tag reports are sent as shown below. An ImPact network device can communicate with an AeroScout Positioning Engine and / or a MST Tracker Engine. Conguration of the Access Point is not required when communicating with an AeroScout Positioning Engine as the device conguration is performed via AeroScout server tools.
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If the Access Point is sending tag reports to an MST Tracker Engine, the Tracker Engine's IP address must be entered into each Access Point.
There are four sections on the Tracking conguration screen:
Enable
Check Enable Wi-Fi Tracking to view other settings.
RSSI Lower Thresholds
These settings are used to control what location reports are sent to the Positioning Engine. If a Wi-Fi tag or mobile unit report is received with an RSSI below the relevant threshold, it is not sent to the Positioning Engine (whether it is an AeroScout Positioning Engine or MST Tracker Engine). The default threshold is -95 dBm, but this can be raised or lowered according to specic site conditions and requirements.
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Tracker Engine List
This section is used to congure the MST Tracker Engine(s) that the access point will send information to. The available settings are listed below. Note that data can be passed to up to 2 MST Tracker Engine instances.
Recommended SettingsDescriptionField
Enable
Engine will be sent data.
IP Address
Engine.
Port
Engine listens for messages on.
Status Update Interval
be sent from the Access Point to the Tracker Engine. These status reports are used by the Tracker Engine to determine if the Access Point is up or down.
AeroScout Tags Enabled MST Wi-Fi Tags Enabled Mobile Units Enabled
Advanced Settings
Drop non-exciter tag reports - If enabled, the Access Point will only send tag reports when the tag is in an AeroScout Exciter eld.
Indicates which devices will be tracked by this Access Point.
On or Off.Indicates whether the Tracker
Specic to each site.The IP address of the MST Tracker
Default is 1142.The UDP port that the Tracker
Default is 15 seconds.The period that status reports will
These options are enabled by default.
This setting applies to tag reports that are sent to AeroScout Positioning Engines and MST Tracker Engines.

5.5.9 Configuring Ethernet Switch Ports

The WAC in slot 1 (located on the left side of the NS50) is used for conguration and management of the switch processors in the network switch. It enables the ports on the switch and the 48V rail for the Power over Ethernet (PoE) supply to be congured.
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The Switch ports have the following conguration options:
Recommended SettingsDescriptionField
Name
It is often used to name the device connected to it. For example, "Level 68 camera".
Speed & Duplex
Enabling 48v Power Over Ethernet
48VDC PoE supply for ports 5-8 can be enabled by selecting the PoE Power Rail Enable check box. If this setting has been changed but not saved, the Reset PoE button will change it back to its saved setting.
If the voltage to the NS50 is too low to enable PoE on startup, the following message will be displayed:
Ports 5 thru 8 allow the speed and duplex to be controlled.
Naming is specic to each device.Used to provide a convenient name for the port.
On or Off.Enables or disables the port.Enabled
Auto is usually the best setting. However some devices require Speed & Duplex to be hard coded due to poor Auto-negotiation implementations.
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5.5.10 Enabling the MAC Address Filter

The MAC Address Filter conguration screen species MAC addresses to be allowed or denied access to the network.
To enable MAC address ltering:
1.
Click on the Enable MAC Address Filter check box to view settings.
2.
Under Filter Settings, select the Mode from the drop-down box to only allow or only deny listed machines.
3.
Click on check boxes to enable Filter Wireless Clients and/or Filter Wired Clients.
4.
Under Add MAC Address, click on the Enable check box.
5.
Enter the MAC address of client device in the MAC Address eld. Click Copy Your PC's MAC Address to add your own computer to the list.
6.
Enter Computer Name in the supplied eld and click Save. The MAC address will appear in the MAC Address List.
7.
To delete the device from the list, click on the icon.
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8.
To edit a device in the list, click on the icon.
9.
Click Save Settings.

5.5.11 Defining VLANs

The VLAN LIST screen displays VLANs and the priority that will be assigned to trafc on each VLAN. For more information, see Understanding VLANs on page 43.
Up to 8 VLANs can be dened with the following parameters:
• Enable: Check box to enable the VLAN.
• ID: VLAN ID number that is tagged in frames sent through trunk ports.
• Name: VLAN name. It should be named to simplify administration.
• Priority: Priority ranges from 0-7 (7 being the highest priority) that is assigned to frames on this VLAN.
Note: The rst VLAN (Infrastructure) cannot be disabled, because the management CPU is always on this VLAN.
By default, VLANs are pre-dened with recommended IDs and priorities. This is based on commonly used applications in mines. Once the VLANs are dened, they can be saved by clicking on the Save Settings button.
After the VLANs have been dened, they can be assigned to the wireless networks and switch ports (Network Switch only) on the VLAN PORT MAP screen.
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5.5.12 Configuring the VLAN Port Map

The VLAN Port Map screen assigns the VLAN(s) to each physical switch port, and each wireless network.
Physical switch ports can be assigned as Trunk or Access ports. Wireless networks always act as Access ports on the selected VLAN.
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All ports pass through a single switch processor, but VLAN membership for some ports is congured on WAC 1 and others on WAC 2. All physical ports can be assigned to be either a trunk port or access port.
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To congure a port:
1.
Set the Mode to be either Trunk or Access (for physical ports).
2.
Select the VLAN Membership(s). For an Access port only one VLAN can be selected. For a trunk port multiple VLANS can be selected.
3.
Click Save Settings to save VLAN port map settings.
Note: To congure the VLAN port map properly, it is recommended to understand the principles
of VLANs. For more details on VLANs, see Understanding VLANs on page 43.
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Chapter
6

Centralised Configuration Management

Topics:
•
Device Management Overview
•
TFTP Server Overview
•
TFTP Parameters
Centralised conguration management is an alternative conguration method to the web interface. It uses Trivial File Transfer Protocol (TFTP) to enable devices to read and apply conguration les from a TFTP server. It is a fast and consistent way to congure a large number of devices, reducing the potential for human error.
There are two ways to take advantage of TFTP conguration:
ICA v1.4.0 or later - Device Management via the ICA Administration Console (RECOMMENDED)
For networks with an ICA v1.4.0 or higher, AP settings can be managed from the ICA Administration console. A customisable Site Default template is included at installation, and further templates can be copied from it and modied separately. Additionally, individual APs can have specic settings overridden via the Administration Console.
In this case, the ICA will push conguration changes to the APs, and no local setup is required.
ICA v1.3.1 or earlier, and 3rd party TFTP servers - Manually editing configuration files
For older ICA systems and other TFTP servers, conguration les are edited and uploaded manually, and APs must be congured to periodically self-check and fetch new conguration les from the server when available.
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6.1 Device Management Overview

The ICA Administration Console (v1.4.0 and later) supports the creation of Access Point conguration templates. A Site Default template is created at installation and applied to all managed devices. New templates can be copied from the Site Default and applied to selected devices, and further overrides can also be applied to individual devices.
Some familiarity with the ICA Administration Console is assumed here. For more information, see the ICA Administration Console User Manual available from MST.
There are three editors in the ICA Administration Console with relevant settings:
• Conguration > Site Conguration
• Conguration > AP Cong Templates
• Devices > Access Points

6.1.1 Site Configuration

This editor contains the option to Set new Access Points as Managed - If checked, all newly discovered Access Points will be congured according to the Site Default template by the ICA. If disabled, new APs must either have their management settings congured in the Devices > Access Points editor, or be congured manually.

6.1.2 AP Config Templates

The ICA is installed with one AP Template: Site Defaults. This is a special AP Template which denes the settings that new APs will automatically pick up if Set new Access Points as Managed is ticked in
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the Site Conguration editor. This template cannot be deleted, but new templates can be copied from it and modied separately.
Note: Once a template is applied to an AP, any manual changes made to settings listed in the template will be reverted automatically to the template default. Settings that are not dened by the template can be changed freely.
New templates are created by copying an existing template (initially the only one to copy is Site Defaults). A copied template will start with the same parameters as the original, but they are not linked, so further changes to one will not affect the other. To create a new template, select another template from the list and click the Copy button. To delete a template, click the Remove button.
AP Config Template Details
This section contains the details for each template:
• System ID is an automatically assigned identier used by the ICA.
• Name - A name or description for the template.
• Edit Parameters - Individual parameters can be selected and modied, or ignored, for each template by clicking this link to open the Parameters dialogue box (See Edit Parameters section below).
Editing Parameters
In the Parameters dialog box, search for the desired parameter by typing all or part of any of the displayed column values:
• Managed: To manage a parameter, tick the checkbox in this column. Fixed entries cannot be disabled or changed, while required entries can be edited but not disabled. Unmarked entries can be disabled by unticking the checkbox.
• Parameter Name: For more information on parameters that affect a specic AP model on the network, see the TFTP Parameters section of the user manual for that model.
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• Parameter Value: To edit a parameter, click on the parameter value and either enter a new value (e.g. names and IP addresses) or select a new value from the dropdown menu (e.g. ENABLED / DISABLED).
When all required changes have been made, click OK to close the dialog box. The Managed status of all available parameters can be changed at once using the Manage All and Manage None checkboxes below the list.

6.1.3 Access Point

Access Points (APs) become visible to the ICA after the map containing them is rst synchronised from AeroScout. Once visible, APs are automatically added to the List of Access Points
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List of Access Points
The Managed column shows CURRENT for managed devices with up-to-date settings, or PENDING for devices awaiting newly updated settings.
To edit an existing entry: Click on that entry, ll in the relevant elds on the right, then click the Save button or press Ctrl+S:
Manage Configuration
To have an AP's conguration managed by the ICA, tick the Manage Conguration checkbox, and select the correct template from the dropdown menu.
Last Change shows the time of the last change to the AP's conguration management settings if known, and PENDING if new settings are waiting to be sent.
Important: If any changes are made to a managed AP's settings via the web interface that conict with the selected template or overridden parameters (see below), those changes will be automatically reverted by the ICA. Settings that are not dened in the template will be ignored.
Editing Overridden Parameters
Individual parameters specied in a template can be modied for the selected AP. To modify any parameters, click Edit Overridden Parameters.
In the Parameters dialog box, search for the desired parameter by typing all or part of any of the displayed column values:
• Overridden: To override a parameter, tick the checkbox in this column. Fixed entries are enabled by default and cannot be disabled or changed. Required entries are not enabled by default; once ticked, they can be edited but not disabled. Unmarked entries can be disabled by unticking the checkbox.
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• Parameter Name: For more information on parameters, see the TFTP Parameters section of the user manual for the selected access point.
• Parameter Value: To edit a parameter, click on the parameter value and either enter a new value (e.g. names and IP addresses) or select a new value from the dropdown menu (e.g. ENABLED / DISABLED).
When all required changes have been made, click OK to close the dialog box. The override status of all available parameters can be changed at once using the Override All and Override None checkboxes below the list.

6.2 TFTP Server Overview

Note: This conguration method is not commonly used. For more information on TFTP server and conguration le requirements for ImPact access points, please contact MST.
Centralised conguration management using ICA v1.3.1 or earlier, or a 3rd party TFTP server, involves the following steps:
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1.
Conguring a TFTP server on the network. The ICA is precongured for this purpose. For a 3rd party server, please consult the vendor for instructions.
2.
Dening a site conguration le which contain global settings to all network devices on the site.
3.
Dening device conguration les which contain specic settings for each device, which override global settings.
4.
Applying the conguration les to each device and rebooting.

6.3 TFTP Parameters

Below is a brief description of the types of congurable parameters for the NS50. For information on specic parameters, please contact MST.
Network
• network.1.* - Common LAN settings for all devices on the network.
Configuration Management
• tftp.* - Only required for 3rd party TFTP servers or ICA v1.3.1 and earlier.
System
• system.* - Network names, contact details and passwords.
NTP (Network Time Protocol)
• time.ntp.* - NTP server settings for the network switch.
Logging
• syslog.* - System message logging settings.
SNMP (Simple Network Management Protocol)
• snmp.* - At present, the ICA only uses this protocol to monitor for Port Up/Port Down errors on the NS50, and is not affected by these settings. adjust only if required for 3rd party monitoring software.
Asset Tracking and Location Servers
• tracking.* - Positioning/Tracker engines settings. This is where AeroScout tag and Wi-Fi client device information is sent. Conguration is not required when communicating with an AeroScout positioning engine.
• tracking.tracker.x.* - These settings congure up to two MST Tracker Engines that the access point will send information to. The "x" in each parameter is replaced by the tracking engine number.
VLAN Configuration
• vlan.* - VLANs are used to separate different types of network trafc to and from the ICA.
• vlan.entry.x.* - Up to 8 VLANs can be dened, the "x" in each address is replaced by the VLAN number 1-8. By default, the site conguration le has some VLANs predened based on commonly used applications.
Note: The Infrastructure VLAN cannot be edited or disabled because the management CPU is on this VLAN.
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Wireless Radio and Networking
• wireless.radio.1.* - General wireless radio settings.
• wireless.radio.1.ap.x.* - Each WAC in a device can have up to four wireless SSIDs (where "x" is replaced with 1-4), each with different security settings and different VLAN mapping.
• wireless.radio.1.ap.x.wep.* OR wireless.radio.1.ap.x.wpa.* - WEP/WPA security; only the options specic to the enabled security mode need be congured.
Wireless EAP Configuration
• wireless.eap.* - RADIUS server settings. This is applicable only to wireless networks congured with WPA Enterprise security mode.
• wireless.eap.x.* - A primary and secondary (backup) RADIUS server can be set up and congured. The "x" in each parameter should be replaced with "primary" or "secondary".
WDS (Wireless Distribution System)
• wireless.radio.1.wds.* - Allows ImPact network devices to connect wirelessly where a bre or ethernet connection is not practical.
• wireless.radio.1.wds.peer.x.* - Up to six peered devices can be congured; "x" is replaced with 1-6.
Switch Configuration
• switch.port.x.* - Controls switch ports 1-8 and assigns VLANs; "x" is replaced by the relevant port number.
PoE (Power Over Ethernet)
• switch.poe.enabled - Controls the 48VDC PoE supply feature, and is enabled by default.
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Appendix
A

Troubleshooting Guide

This chapter assists in the diagnosis and resolution of problems with NS50 installation and operation.
SolutionPossible CausesProblem
The power light on the NS50 blinks on and off, and is dimly lit.
PoE devices are not operational.
wireless network switch are not on.
The bre activity light is not on.
network cannot be congured from the web browser interface.
Insufcient power supplied to the NS50.
Insufcient power supplied to the NS50 to power PoE devices.
The NS50 has no power.LEDs on the
connected.
There is a network access issue.The wireless
An additional DC power supply is required to boost the power of the network switch. It is highly recommended that a site survey is conducted to determine power requirements during system design or modications.
Measure voltage to the NS50. If the voltage measures less than 15VDC, a JB11 junction box is required.
Enable the PoE feature in the web browser interface.The PoE rail is not enabled.
• Check that power is connected from either the composite cable or the test / conguration jig to the NS50.
• Verify the network switch is connected to an operational power supply.
• Test the power supply is supplying the correct voltage/current for the NS50.
• Check there is sufcient power available if extending the NS50 infrastructure.
Verify the bre link is connected and active.The NS50 bre connector is not
• Check that the NS50 is properly installed, LAN connections are connected properly and the unit is powered on. If the PC uses a xed (static) IP address, check that it is using an IP address within the IP range of the network switch.
• Check that the VLAN settings on the devices upstream on the network are not restricting access.
instability.
establish.
Incorrect earthing scheme.Power supply
There are too many network devices on the one power supply.
Incorrect MAC address.WDS link fails to
• Check antennas are insulated from ground.
• Check PCB in the network switch has a oating earth (not grounded).
• Add additional power supplies.
• Isolate network segments so that in event of power supply failure, an overload condition is avoided.
Check MAC addresses congured on the NS50 using the web browser interface.
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Troubleshooting Guide
SolutionPossible CausesProblem
Disable security on WDS link using the web interface.Security settings do not match on each
side of the WDS link.
Signal loss in the bre optic cable.
The Internet or the LAN cannot be accessed with a wireless-capable PC.
Composite connector or bre port is dirty.
There is a conguration problem with the PC.
The port on the NS50 is disabled.
VLAN(s) on the port are not properly congured.
Check the connectors and bre ports are clean. Clean using alcohol wipes or bre optic cleaning kits. NB: Do not use air spray as the compressor oil can leave residue. Refer to Composite Cable Testing on page 95 for testing.
• Re-boot the computer with the wireless adapter that has had TCP/IP changes applied to it. The computer with the wireless adapter may not have the correct TCP/IP settings to communicate with the network.
• Restart the computer and check the network settings. Refer to Connecting a PC to an ImPact Network
Device on page 105. If this is not resolved, try changing
the DHCP setting to Obtain an IP address automatically.
• Check the NS50 default conguration against the conguration of other devices on the network.
Check the port activity light is on. If the light is not on, connect a PC to the network switch to access the web browser interface. Go to the Basic > Switch screen and check the port is enabled.
Connect a PC to another port on the network switch to access the network. In the web browser interface, check that VLAN membership is assigned to the port for Internet / LAN access.
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Appendix
B

Composite Cable Testing

This appendix describes bre optic cable continuity and testing. Fibre optic cable testing includes visual inspection and power loss testing.

B.1 Visual Inspection of the Fibre Optic Cable

Fibre optic cable can be inspected by visually tracing and inspecting the connector.
Visual Tracing
Checking for continuity diagnoses whether the bre optic cable is damaged or broken. A visible light "bre optic tracer" or "pocket visual fault locator" connected to a bre optic connector.
1.
Attach a bre optic cable to the visual tracer and look at the other end to see if light is transmitting through the bre.
2.
If there is no light, there is a damaged or broken section of the bre in the composite cable.
Visual Connector Inspection
A visual inspection of the bre optic termination is usually carried out using a bre optic microscope. It is important the bre termination has a clean, smooth, polished, and scratch free nish. Any signs of cracks, chips or dirt will affect connectivity.

B.2 Measuring and Testing for Power Loss

Measuring power and loss requires a Optical Time-Domain Reectometer (OTDR) with a suitable adapter matching the bre optic connector being tested.
To measure power in bre optic cable:
1.
Set the OTDR to ‘dBm’ and set the wavelengths according to the bre optic cable being tested.
2.
Attach the OTDR to the bre optic cable at the receiving end to measure the output.
3.
Compare the output with a reference test cable.
To measure power loss in bre optic cable:
1.
Set the power meter to ‘dB’ for a relative power range and select the wavelength required for the test.
2.
Perform a single-ended loss test by connecting the cable to be tested to the reference cable and measuring power loss at the receiving end.
3.
Perform a double-ended loss test by attaching the cable between two reference cables that are attached to the source and to the OTDR. If high losses are measured, reverse the cable and test in the opposite direction using the single ended test.
A guideline on power losses are shown in the table below.
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Composite Cable Testing
Power lossComponent
0.5 dBiConnector
1 dBi / km @ 1300nmMulti-mode bre
Single-mode bre
0.5 dBi / km @ 1300nm
0.4 dBi / km @ 1550nm
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Appendix
C

Ethernet Cable Specifications

Ethernet cable must conform to the following specications when connecting to ImPact network devices:
• Polyethylene jacket
• 5.0-6.5mm outer diameter
• Stranded cable for lengths less than 30m
• Solid core cable for lengths greater than 30m
Cable and Parts Description
Order CodeDescription
W-NS50-RJ45-PLUGBayonet back-shell for RJ45 connector
The choice of RJ45 crimp will depend on the type of wire used (stranded or solid core). Generic brand crimps may be used.
Note: Both solid and stranded core RJ45 connectors at the network switch end require a bayonet back-shell.
RJ45 to M12 Ethernet Cable Wiring Diagram
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Page 99
Appendix
D

Device Discovery

The MST Device Scanner can be used to discover and change the IP address of ImPact devices from any PC connected to the same network. Upon opening, the Device Scanner will automatically scan for devices.
To use the Device Scanner, navigate to the folder where the program is stored, and double click devicescanner.exe.
The Device Scanner shows the columns of information for discovered devices:
• Name - The hostname of the device. For the NS50, the default name is MST Wireless Switch.
• IP Address - This can be set remotely on the NS50, in Settings > LAN > LAN Settings , or from the Device Scanner (see below).
• Type - The device type or model. NS50 units will show an entry for each WAC, e.g. NS50 2F R1 and NS50 2F R2.
• MAC Address - The MAC address of the device.
• Interface - The network interface via which the Device Scanner is communicating with the device.
• ID - The serial number on the device casing.
• Firmware - The version number of the rmware running on the device.
• Status - The uptime of the device. This can be used to easily determine which devices have recently been connected to the network.
• Revision - The hardware revision of the device.
To manually discover new devices after the program has been opened, click the Scan button. To allow the Device Scanner to continually check for new devices, tick the Continuous checkbox.
To change the IP address or settings of a device, click the Congure IP button. This will open a dialogue box allowing you to set the device to Obtain an IP address automatically using DHCP, or to manually set an IP address, Subnet Mask and Default Gateway with the Use the following IP address option.
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Device Discovery
Revision C100NS50 User Guide
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