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4RF Aprisa SR+ User Manual

Download
July 2016
Version 1.6.0
| 1
Copyright
Copyright © 2016 4RF Limited. All rights reserved.
This document is protected by copyright belonging to 4RF Limited and may not be reproduced or republished in whole or part in any form without the prior written permission of 4RF Limited.
Trademarks
Aprisa and the 4RF logo are trademarks of 4RF Limited.
Windows is a registered trademark of Microsoft Corporation in the United States and other countries. Java and all Java-related trademarks are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries. All other marks are the property of their respective owners.
Disclaimer
Although every precaution has been taken preparing this information, 4RF Limited assumes no liability for errors and omissions, or any damages resulting from use of this information. This document or the equipment may change, without notice, in the interests of improving the product.
RoHS and WEEE Compliance
The Aprisa SR+ is fully compliant with the European Commission’s RoHS (Restriction of Certain Hazardous Substances in Electrical and Electronic Equipment) and WEEE (Waste Electrical and Electronic Equipment) environmental directives.
Restriction of hazardous substances (RoHS)
The RoHS Directive prohibits the sale in the European Union of electronic equipment containing these hazardous substances: lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs).
4RF has worked with its component suppliers to ensure compliance with the RoHS Directive which came into effect on the 1st July 2006.
End-of-life recycling programme (WEEE)
The WEEE Directive concerns the recovery, reuse, and recycling of electronic and electrical equipment. Under the Directive, used equipment must be marked, collected separately, and disposed of properly.
4RF has instigated a programme to manage the reuse, recycling, and recovery of waste in an environmentally safe manner using processes that comply with the WEEE Directive (EU Waste Electrical and Electronic Equipment 2002/96/EC).
4RF invites questions from customers and partners on its environmental programmes and compliance with the European Commission’s Directives (sales@4RF.com).
2 |
12.5 kHz and 25 kHz Channel
50 kHz Channel Radio performance
EN 300 113-2
EN 302 561 (pending)
EMC
EN 301 489-1 and 5
Environmental
EN 300 019, Class 3.4 Ingress Protection IP51
Safety
EN 60950-1:2006 Class 1 division 2 for hazardous locations
Frequency band
Channel size
Power input
Notified body
135-175 MHz
12.5 kHz, 25 kHz
13.8 VDC
215-240 MHz
12.5 kHz, 20 kHz, 25 kHz, 50 kHz
13.8 VDC
320-400 MHz
12.5 kHz, 20 kHz, 25 kHz, 50 kHz
13.8 VDC
400-470 MHz
12.5 kHz, 20 kHz, 25 kHz, 50 kHz
13.8 VDC 450-520 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
Compliance General
The Aprisa SR+ radio predominantly operates within frequency bands that require a site license be issued by the radio regulatory authority with jurisdiction over the territory in which the equipment is being operated.
It is the responsibility of the user, before operating the equipment, to ensure that where required the appropriate license has been granted and all conditions attendant to that license have been met.
Changes or modifications not approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Equipment authorizations sought by 4RF are based on the Aprisa SR+ radio equipment being installed at a fixed restricted access location and operated in point-to-multipoint or point-to-point mode within the environmental profile defined by EN 300 019, Class 3.4. Operation outside these criteria may invalidate the authorizations and / or license conditions.
The term ‘Radio’ with reference to the Aprisa SR+ User Manual, is a generic term for one end station of a point-to-multipoint Aprisa SR+ network and does not confer any rights to connect to any public network or to operate the equipment within any territory.
Compliance European Telecommunications Standards Institute
The Aprisa SR+ radio is designed to comply with the European Telecommunications Standards Institute (ETSI) specifications as follows:
| 3
Radio
47CFR part 24, part 27, part 90 and part 101 Private Land Mobile Radio Services
EMC
47CFR part 15 Radio Frequency Devices, EN 301 489-1 and 5
Environmental
EN 300 019, Class 3.4 Ingress Protection IP51
Safety
EN 60950-1:2006 Class 1 division 2 for hazardous locations
Frequency Band *
Channel size
Power input
Authorization
FCC ID
135-175 MHz
15 kHz, 30 kHz
13.8 VDC
Part 90
UIPSQ135M150
215-240 MHz
12.5 kHz, 15 kHz, 25 kHz, 50 kHz
13.8 VDC
Part 90
UIPSQ215M141
400-470 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
Part 90
UIPSQ400M1311 450-520 MHz
12.5 kHz, 25 kHz
13.8 VDC
Part 90
Pending
896-902 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
Part 24 / Part 90 / Part 101
UIPSQ896M141
928-960 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
Part 24 / Part 90 / Part 101
UIPSQ928M141
787-788 MHz
kHz
757-758 MHz and
5 kHz, 25 kHz,
13.8 VDC
Part 27
Pending
Compliance Federal Communications Commission
The Aprisa SR+ radio is designed to comply with the Federal Communications Commission (FCC) specifications as follows:
12.
50
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
* The Frequency Band is not an indication of the exact frequencies approved by FCC.
4 |
Radio
RSS-119 / RSS-134
EMC
This Class A digital apparatus complies with Canadian standard ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Environmental
EN 300 019, Class 3.4 Ingress Protection IP51
Safety
EN 60950-1:2006 Class 1 division 2 for hazardous locations
Frequency Band *
Channel size
Power input
Authorization
IC
135-175 MHz
15 kHz, 30 kHz
13.8 VDC
RSS-119
6772A-SQ135M150
215-240 MHz
12.5 kHz, 15 kHz, 25 kHz, 50 kHz
13.8 VDC
RSS-119
Pending
400-470 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
RSS-119
6772A-SQ400M1311
896-902 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
RSS-119 and RSS-134
Pending
928-960 MHz
12.5 kHz, 25 kHz, 50 kHz
13.8 VDC
RSS-119 and RSS-134
Pending
Compliance Industry Canada
The Aprisa SR+ radio is designed to comply with Industry Canada (IC) specifications as follows:
* The Frequency Band is not an indication of the exact frequencies approved by IC.
Compliance Brazil
Este produto será comercializado no Brasil com as configurações abaixo:
Faixa de frequência: 406,10 a 413,05, 423,05 a 430 MHz, 451,00625 a 452,0065 MHz, 459 a 460 MHz, 461,0025 a 462,00625 MHz e 469 a 470 MHz.
Modulações: QPSK, 16QAM e 64QAM
BW: 12,5 e 25 KHz.
| 5
Compliance Hazardous Locations Notice
This product is suitable for use in Class 1, Division 2, Groups A - D hazardous locations or non-hazardous locations.
The following text is printed on the Aprisa SR+ fascia:
WARNING: EXPLOSION HAZARD - Do not connect or disconnect while circuits are live unless area is known to be non-hazardous.
The following text is printed on the Aprisa SR+ where the end user is in Canada:
AVERTISSEMENT: RISQUE D'EXPLOSION - Ne pas brancher ou débrancher tant que le circuit est sous tension, à moins qu'il ne s'agisse d'un emplacement non dangereux.
The USB service ports are not to be used unless the area is known to be non-hazardous.
Compliance IEEE 1613 class 2
Users requiring compliance to IEEE 1613 class 2 should use screened cables and connectors to connect to the serial ports.
6 |
WARNING:
The installer and / or user of Aprisa SR+ radios shall ensure that a separation distance as given in the following table is maintained between the main axis of the terminal’s antenna and the body of the user or nearby persons.
Minimum separation distances given are based on the maximum values of the following methodologies:
1. Maximum Permissible Exposure non-occupational limit (B or general public) of 47 CFR 1.1310 and the methodology of FCC’s OST/OET Bulletin number 65.
2. Reference levels as given in Annex III, European Directive on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz) (1999/519/EC). These distances will ensure indirect compliance with the requirements of EN 50385:2002.
Frequency (MHz)
Maximum Power
(dBm)
Note 1
Maximum Antenna
Gain (dBi)
Minimum Separation
Distance
(m)
135
+ 37
15
3.5
175
+ 37
15
3.5
215
+ 37
15
3.5
240
+ 37
15
3.5
320
+ 37
15
3.5
400
+ 37
15
3.0
450
+ 37
15
3.0
470
+ 37
15
3.0
520
+ 37
15
3.0
757
+ 37
18
3.5
788
+ 37
18
3.5
896
+ 37
28
10.0
902
+ 37
28
10.0
928
+ 37
28
9.5
960
+ 37
28
9.5
RF Exposure Warning
Note 1: The Peak Envelope Power (PEP) at maximum set power level is +41 dBm.
Contents | 7
Contents
1. Getting Started ........................................................................ 13
2. Introduction ............................................................................ 15
About This Manual ............................................................................... 15
What It Covers ............................................................................ 15
Who Should Read It ...................................................................... 15
Contact Us ................................................................................. 15
What’s in the Box ............................................................................... 15
Aprisa SR+ Accessory Kit ................................................................ 16
Aprisa SR+ CD Contents .................................................................. 16
Software ............................................................................ 16
Documentation .................................................................... 16
3. About the Radio ....................................................................... 17
The 4RF Aprisa SR+ Radio ...................................................................... 17
Product Overview ............................................................................... 18
Network Coverage and Capacity ....................................................... 18
Automatic Registration .................................................................. 18
Remote Messaging ........................................................................ 18
Store and Forward Repeater ............................................................ 19
Repeater Packet Forwarding..................................................... 19
Repeater Messaging ............................................................... 22
Peer To Peer Communication Between Remote Radios ...................... 23
Product Features ................................................................................ 24
Functions .................................................................................. 24
Security .................................................................................... 25
Performance .............................................................................. 26
Usability ................................................................................... 26
System Gain vs FEC Coding ............................................................. 27
Architecture ...................................................................................... 28
Product Operation ........................................................................ 28
Physical Layer ............................................................................. 28
Data Link Layer / MAC layer ............................................................ 29
Channel Access .................................................................... 29
Hop by Hop Transmission ......................................................... 30
Adaptive Coding and Modulation ................................................ 30
Network Layer ............................................................................ 31
Packet Routing ..................................................................... 31
Static IP Router .................................................................... 32
Bridge Mode with VLAN Aware .................................................. 35
VLAN Bridge Mode Description .................................................. 36
Avoiding Narrow Band Radio Traffic Overloading .................................... 38
Interfaces ......................................................................................... 40
Antenna Interface ........................................................................ 40
Ethernet Interface ....................................................................... 40
RS-232 / RS-485 Interface ............................................................... 40
USB Interfaces ............................................................................ 40
Protect Interface ......................................................................... 40
Alarms Interface .......................................................................... 40
8 | Contents
Front Panel Connections ....................................................................... 41
LED Display Panel ............................................................................... 42
Normal Operation ........................................................................ 42
Single Radio Software Upgrade ......................................................... 43
Network Software Upgrade ............................................................. 43
Test Mode ................................................................................. 44
Network Management .......................................................................... 45
Hardware Alarm Inputs / Outputs ............................................................ 46
Alarm Input to SNMP Trap ............................................................... 46
Alarm Input to Alarm Output ........................................................... 46
Aprisa SR Alarm Input to Aprisa SR+ Alarm Output .................................. 46
4. Implementing the Network.......................................................... 47
Network Topologies ............................................................................. 47
Point-To-Point Network .......................................................... 47
Point-to-Multipoint Network ..................................................... 47
Point-to-Multipoint with Repeater 1 ............................................ 47
Point-to-Multipoint with Repeater 2 ............................................ 47
Initial Network Deployment ................................................................... 48
Install the Base Station .................................................................. 48
Installing the Remote Stations ......................................................... 48
Install a Repeater Station ............................................................... 48
Network Changes ................................................................................ 49
Adding a Repeater Station .............................................................. 49
Adding a Remote Station ................................................................ 49
5. Preparation ............................................................................ 51
Bench Setup ...................................................................................... 51
Path Planning .................................................................................... 52
Antenna Selection and Siting ........................................................... 52
Base or Repeater Station ......................................................... 52
Remote station .................................................................... 53
Antenna Siting ..................................................................... 54
Coaxial Feeder Cables ................................................................... 55
Linking System Plan ...................................................................... 55
Site Requirements ............................................................................... 56
Power Supply .............................................................................. 56
Equipment Cooling ....................................................................... 56
Earthing and Lightning Protection ..................................................... 57
Feeder Earthing .................................................................... 57
Radio Earthing ..................................................................... 57
6. Installing the Radio ................................................................... 58
Mounting .......................................................................................... 58
Required Tools ............................................................................ 58
DIN Rail Mounting ........................................................................ 59
Rack Shelf Mounting ..................................................................... 60
Wall Mounting ............................................................................. 61
Installing the Antenna and Feeder Cable .................................................... 62
Connecting the Power Supply ................................................................. 63
External Power Supplies ................................................................. 63
Spare Fuses ................................................................................ 64
Additional Spare Fuses ............................................................ 65
Contents | 9
7. Managing the Radio ................................................................... 67
SuperVisor ........................................................................................ 67
PC Requirements for SuperVisor ....................................................... 68
Connecting to SuperVisor ............................................................... 69
Management PC Connection ..................................................... 70
PC Settings for SuperVisor ....................................................... 71
Login to SuperVisor................................................................ 75
Logout of SuperVisor .............................................................. 76
SuperVisor Page Layout ........................................................... 77
SuperVisor Menu ................................................................... 79
SuperVisor Menu Access .......................................................... 80
SuperVisor Menu Items ........................................................... 82
Standard Radio............................................................................ 83
Terminal ............................................................................ 83
Radio .............................................................................. 101
Serial .............................................................................. 122
Ethernet .......................................................................... 137
IP................................................................................... 147
QoS ................................................................................ 160
Security ........................................................................... 182
Maintenance ..................................................................... 204
Events ............................................................................. 222
Software .......................................................................... 234
Monitoring ........................................................................ 253
Network Status .................................................................. 271
Protected Station ...................................................................... 278
Terminal .......................................................................... 279
Radio .............................................................................. 285
Ethernet .......................................................................... 287
IP................................................................................... 288
Security ........................................................................... 292
Maintenance ..................................................................... 294
Events ............................................................................. 302
Software .......................................................................... 305
Command Line Interface ..................................................................... 322
Connecting to the Management Port ................................................ 322
CLI Commands .......................................................................... 325
Viewing the CLI Terminal Summary ........................................... 326
Changing the Radio IP Address with the CLI ................................. 326
8. In-Service Commissioning .......................................................... 327
Before You Start ............................................................................... 327
What You Will Need .................................................................... 327
Antenna Alignment ............................................................................ 328
Aligning the Antennas ................................................................. 328
10 | Contents
9. Product Options ...................................................................... 329
Data Interface Ports .......................................................................... 329
Full Duplex Base Station ..................................................................... 329
Protected Station ............................................................................. 330
Protected Ports ......................................................................... 331
Operation ................................................................................ 331
Switch Over ...................................................................... 331
Switching Criteria ............................................................... 332
Monitored Alarms ................................................................ 333
Configuration Management .................................................... 334
Hardware Manual Lock ......................................................... 335
Remote Control .................................................................. 335
L2 / L3 Protection Operation .................................................. 336
Hot-Swappable ................................................................... 336
Antenna and Duplexer Options ................................................ 337
Installation .............................................................................. 339
Mounting .......................................................................... 339
Cabling ............................................................................ 340
Power ............................................................................. 342
Alarms ............................................................................. 342
Maintenance ............................................................................ 343
Changing the Protected Station IP Addresses ............................... 343
Creating a Protected Station .................................................. 344
Replacing a Protected Station Faulty Radio ................................. 344
Replacing a Faulty Power Supply .............................................. 345
Replacing a Faulty Protection Switch ........................................ 345
Spares .................................................................................... 345
Data Driven Protected Station............................................................... 346
Operation ................................................................................ 346
Over The Air Compatibility .................................................... 346
Switch Over ...................................................................... 347
Configuration Management .................................................... 347
Power ............................................................................. 347
Installation .............................................................................. 348
Mounting .......................................................................... 348
Cabling ............................................................................ 348
Duplexer Kits ................................................................................... 349
Radio Duplexer Kits .................................................................... 349
Protected Station Duplexer Kits ...................................................... 351
USB RS-232 / RS-485 Serial Port ............................................................. 353
USB RS-232 / RS-485 operation ....................................................... 353
USB RS-232 Cabling Options ........................................................... 354
USB RS-485 Cabling Options ........................................................... 354
USB Retention Clip .............................................................. 355
Contents | 11
10. Maintenance .......................................................................... 357
No User-Serviceable Components ........................................................... 357
Software Upgrade ............................................................................. 358
Network Software Upgrade ........................................................... 358
Non-Protected Network Upgrade Process .................................... 358
Protected Network Upgrade Process ......................................... 360
Single Radio Software Upgrade ....................................................... 362
File Transfer Method ............................................................ 362
USB Boot Upgrade Method ..................................................... 363
Software Downgrade ............................................................ 363
Protected Station Software Upgrade ................................................ 364
11. Interface Connections ............................................................... 365
RJ45 Connector Pin Assignments ............................................................ 365
Ethernet Interface Connections ............................................................. 365
RS-232 Serial Interface Connections ........................................................ 366
RS-232 Pinout .................................................................... 366
RS-232 Customer Cable Wiring ................................................ 366
RS-232 RJ45 LED Indicators .................................................... 366
Alarm Interface Connections ................................................................ 367
Protection Switch Remote Control Connections .......................................... 367
12. Alarm Types and Sources ........................................................... 368
Alarm Types .................................................................................... 368
Alarm Events ............................................................................ 369
Informational Events ................................................................... 374
13. Specifications ......................................................................... 375
RF Specifications .............................................................................. 375
Frequency Bands ....................................................................... 375
Channel Sizes ........................................................................... 376
Receiver ................................................................................. 389
Transmitter ............................................................................. 392
Modem ................................................................................... 393
Data Payload Security ................................................................. 393
Interface Specifications ...................................................................... 394
Ethernet Interface ..................................................................... 394
RS-232 Asynchronous Interface ....................................................... 395
Hardware Alarms Interface ........................................................... 396
Protection Switch Specifications ..................................................... 396
Power Specifications .......................................................................... 397
Power Supply ............................................................................ 397
Power Consumption .................................................................... 398
Power Dissipation ...................................................................... 398
General Specifications ........................................................................ 399
Environmental .......................................................................... 399
Mechanical .............................................................................. 399
Compliance .............................................................................. 400
12 | Contents
14. Product End Of Life .................................................................. 401
End-of-Life Recycling Programme (WEEE) ................................................. 401
The WEEE Symbol Explained .......................................................... 401
WEEE Must Be Collected Separately ................................................. 401
YOUR ROLE in the Recovery of WEEE ................................................ 401
EEE Waste Impacts the Environment and Health .................................. 401
15. Copyrights ............................................................................. 402
16. Abbreviations ......................................................................... 403
Getting Started | 13
Phase 1:
Pre-installation
1.
Confirm path planning.
Page 52
2.
Ensure that the site preparation is complete:
Power requirements Tower requirements Environmental considerations, for example, temperature control Mounting space
Page 55
Phase 2:
Installing the radios
1.
Mount the radio.
Page 58
2.
Connect earthing to the radio.
Page 57
3.
Confirm that the:
Antenna is mounted and visually aligned Feeder cable is connected to the antenna Feeder connections are tightened to recommended level Tower earthing is complete
4.
Install lightning protection.
Page 57
5.
Connect the coaxial jumper cable between the lightning protection and the radio antenna port.
Page 62
6.
Connect the power to the radio.
Page 63
1. Getting Started
This section is an overview of the steps required to commission an Aprisa SR+ radio network in the field:
14 | Getting Started
Phase 3:
Establishing the link
1.
If radio’s IP address is not the default IP address (169.254.50.10 with a subnet mask of 255.255.0.0) and you don’t know the radio’s IP address see ‘Command Line Interface’ on page 322.
Page 322
2.
Connect the Ethernet cable between the radio’s Ethernet port and the PC.
3.
Confirm that the PC IP settings are correct for the Ethernet connection:
IP address Subnet mask Gateway IP address
Page 71
4.
Open a web browser and login to the radio.
Page 75
5.
Set or confirm the RF characteristics:
TX and RX frequencies TX output power
Page 103
6.
Compare the actual RSSI to the expected RSSI value (from your path planning).
Page 44
7.
Align the antennas.
Page 328
8.
Confirm that the radio is operating correctly; the OK, MODE and AUX LEDs are green.
Introduction | 15
4RF Limited
26 Glover Street, Ngauranga
PO Box 13-506
Wellington 6032
New Zealand
E-mail
support@4rf.com
Web site
www.4rf.com
Telephone
+64 4 499 6000
Facsimile
+64 4 473 4447
Attention
Customer Services
2. Introduction
About This Manual
What It Covers
This user manual describes how to install and configure an Aprisa SR+ point-to-multipoint digital radio network.
It specifically documents an Aprisa SR+ radio running system software version 1.6.0 .
It is recommended that you read the relevant sections of this manual before installing or operating the radios.
Who Should Read It
This manual has been written for professional field technicians and engineers who have an appropriate level of training and experience.
Contact Us
If you experience any difficulty installing or using Aprisa SR+ after reading this manual, please contact Customer Support or your local 4RF representative.
Our area representative contact details are available from our website:
What’s in the Box
Inside the box you will find:
One Aprisa SR+ radio fitted with a power connector. One Aprisa SR+ Accessory kit containing the following:
Aprisa SR+ CD Aprisa SR+ Quick Start Guide Management Cable
16 | Introduction
Aprisa SR+ Quick Start Guide
Aprisa SR+ CD
Management Cable USB Cable USB A to USB micro B, 1m
Aprisa SR+ Accessory Kit
The accessory kit contains the following items:
Aprisa SR+ CD Contents
The Aprisa SR+ CD contains the following:
Software
The latest version of the radio software (see ‘Software Upgrade’ on page 358) USB Serial Driver Web browsers - Mozilla Firefox and Internet Explorer are included for your convenience Adobe™ Acrobat® Reader® which you need to view the PDF files on the Aprisa SR+ CD
Documentation
User manual - an electronic (PDF) version for you to view online or print Product collateral - application overviews, product description, quick start guide, case studies,
software release notes and technical papers
About the Radio | 17
3. About the Radio
The 4RF Aprisa SR+ Radio
The 4RF Aprisa SR+ is a Point-To-Multipoint (PMP) and Point-To-Point (PTP) digital radio providing secure narrowband wireless data connectivity for SCADA, infrastructure and telemetry applications.
The radios carry a combination of serial data and Ethernet data between the base station, repeater stations and remote stations.
A single Aprisa SR+ is configurable as a:
Point-To-Multipoint base station, remote station, repeater station or a base-repeater station Point-To-Point local or remote radio
18 | About the Radio
Product Overview
Network Coverage and Capacity
The Aprisa SR+ has a typical link range of up to 120 km, however, geographic features, such as hills, mountains, trees and foliage, or other path obstructions, such as buildings, will limit radio coverage. Additionally, geography may reduce network capacity at the edge of the network where errors may occur and require retransmission. However, the Aprisa SR+ uses 10W output power and Forward Error Correction (FEC) which greatly improves the sensitivity and system gain performance of the radio resulting in less retries and minimal reduction in capacity.
Ultimately, the overall performance of any specific network will be defined by a range of factors including the RF output power, the modulation used and its related receiver sensitivity, the geographic location, the number of remote stations in the base station coverage area and the traffic profile across the network. Effective network design will distribute the total number of remote stations across the available base stations to ensure optimal geographic coverage and network capacity.
One base station can register and operate with up to 500 remote / repeater stations.
The practical limit of remote / repeater stations that can operate with one base station is determined by a range of factors including the number of services, the packet sizes, the protocols used, the message types and network timeouts.
Automatic Registration
On start-up, the remote station transmits a registration message to the base station which responds with a registration response. This allows the base station to record the details of all the remote stations active in the network.
If a remote station cannot register with the base station after multiple attempts within 10 minutes, it will
automatically reboot. If remote is not able to register with base station in 5 attempts, then a ‘Network
Configuration Warning’ alarm event will be raised indicating that a remote is not registered with the base station.
If a remote station has registered with the base station but then loses communication, it will automatically reboot within 2 minutes.
Remote Messaging
There are two message types in the Aprisa SR+ network, broadcast messages and unicast messages. Broadcast messages are transmitted by the base station to the remote stations and unicast messages are transmitted by the remote station to the base station. These messages are commonly referred to as uplink (unicast remote to base) and downlink (broadcast base to remote).
All remotes within the coverage area will receive broadcast messages and pass them on to either the Ethernet or serial interface. The RTU determines if the message is intended for it and will accept it or discard it.
About the Radio | 19
Store and Forward Repeater
The Aprisa SR+ in Repeater mode is used to link remote stations to the base station when direct communication is not possible due to terrain, distance, fade margin or other obstructions in the network. The following example depicts a repeater on the hill top to allow communication between the base station and the remote stations on the other side of hilly terrain.
Repeater Packet Forwarding
The Aprisa SR+ works in packet Store and Forward (S&F) for simple and low cost repeater network.
Repeater mode is available in both Access Request (AR) and Listen Before Send (LBS/CSMA) MAC operating modes. It allows a radio in Repeater mode to store a received packet and retransmit it.
Single Repeater Single Hop
The following example depicts an Aprisa SR+ single repeater single hop Store and Forward network.
20 | About the Radio
Multiple Repeater Single Hop
The following example depicts an Aprisa SR+ multiple repeater single hop store and forward network supporting both overlapping and non-overlapping coverage repeater networks. An overlapped RF coverage area creates radio interference and might affect network performance and reduce throughput, as show in figure (a), where Remote 1 is in overlapped RF coverage with Repeater 1 and Repeater 2.
The Aprisa SR+ functionality allows repeaters in Bridge mode to forward Ethernet packets based on Repeater Network Segment ID. The base station translates the destination address (DA) to the Repeater Network Segment ID. This improves repeater performance by forwarding the packet if the Repeater Network Segment ID belongs to the repeater branch and discards the packet if it doesn’t.
Router mode supports repeater packet forwarding based on IP destination address. This improves repeater performance by forwarding the packet if the IP destination address belongs to the repeater branch and discards the packet if it doesn’t
About the Radio | 21
Multiple Repeater Multiple Hop
The following example depicts an Aprisa SR+ daisy chain multiple repeater multiple hop store and forward network i.e. multiple hops and multiple repeaters in non-overlapping RF coverage. The Aprisa SR+ daisy chain store and forward repeaters are currently supported in LBS MAC mode only.
In any type of store and forward repeater network base, repeater and remote radios must have their Tx/Rx frequencies sets to match to their appropriate linking devices as shown in the figures.
Note: Frequencies shown in the figures relates to the device on the left where {Tx, Rx} = {fx, fy}. In this example, the Base Station, Repeater 2 and remotes are deployed with Tx=f1 and Rx=f2. On the other hand Repeater 1 and Repeater 3 are deployed with Tx=f2 and Rx=f1, creating the required linking for daisy chain operation.
22 | About the Radio
Repeater Messaging
The Aprisa SR+ uses a routed protocol throughout the network whereby messages contain source and destination addresses. The remote and repeater stations will register with a base station. In networks with a repeater, the repeater must register with the base station before the remotes can register with the base station.
Additionally, based on destination address, messages are designated as either a ‘broadcast’ message, (mostly originating from a base station) or a ‘unicast’ message (mostly originating from a remote station).
In a network with a repeater, or multiple repeaters, the base station broadcasts a message which contains a source address and a destination address. The repeater receives the message and recognizes it as a broadcast message, from the destination address and re-broadcasts the message across the network. In IP routing mode all remote stations in the coverage area will receive the message but only the radio with the destination address will act upon the message.
Similarly, the remote station will send a unicast message which contains a unicast destination address (the base station). The repeater will receive this message; recognize the destination address and forward it to the appropriate destination address.
In order to prevent repeater-repeater loops, a detection mechanism of ‘duplicate message’ and use of unicast messaging in remote to base/repeater direction is used.
For example, in the Multiple Repeater Single Hop figure above, the topology is of Base, Repeater 1, Repeater 2 and Remote 1 connected to Repeater 1 in overlapping coverage, where Remote 1 can also hear Repeater 2. When the Base station broadcasts a message, Remote1 will receive this message from both Repeater 1 and Repeater 2 but will drop one of them as ‘duplicate message’. It is possible that Repeater 1, for example, can also hear the broadcast sent out by Repeater 2. In this case, Repeater 1 will drop this broadcast as a ‘duplicate message’.
These phenomena will not happen in the upstream direction as all messages are sent ‘unicast’. Remote 1 will send a packet to Base station, setting the destination address in packet to Base station and ‘next hop’ address in packet to Repeater 1. Thus, only Repeater 1 will forward the packet to Base station and Repeater 2 will drop the packet as the ‘next hop’ address is not Repeater 2.
About the Radio | 23
Peer To Peer Communication Between Remote Radios
The Aprisa SR+ peer to peer communication between remote radios is used to enable communication between remote radios via the repeater or base-repeater. It is useful if the SCADA server or base station fails or when in some industries like the water industry, where a reservoir remote station might send a direct message to a valve remote station to close or open the valve without the intervention of the SCADA server.
The Aprisa SR+ has a special operating mode for peer to peer communication between remote radios and requires the following settings:
1. If peer to peer communication between remote radios is required to operate via the base station, then the SuperVisor > Terminal > Operating Mode > Terminal operating mode must be set to ‘Base­Repeater’. Base-Repeater operating mode doesn’t change the Network Radius parameter as the base-repeater is considered to be like a regular base station.
2. The remote radios participating in peer to peer communication must set the SuperVisor > Radio > Channel Setup > Packet Filtering to Disable to allow a repeated packet received from peer to peer remote radios by the repeater or base-repeater to forward the packet to the relevant interface and not to discard it.
3. IP Header Compression must be disabled on all radios (base, repeater, remotes) for this feature to operate correctly (See ‘IP Header Compression Ratio’ on page 119).
4. The Network Repeaters Proximity must be set to ‘Base Repeater’ on all remote radios for this feature to operate correctly (See ‘Network Repeaters Proximity’ on page 89’).
5. Note: In ‘Router Mode’ setup a static route for any required peer to peer path.
The following example depicts peer to peer communication between remote radios via a base-repeater and via a repeater station where remote-1 and remote-2 communicate with each other via the base­repeater station and remote-3 and remote-4 communicate with each other via the repeater station. All the remote radios are configured with packet filtering disabled and all radios in the network are configured with IP header compression ratio disabled.
Note: The Aprisa SR+ network is transparent to the protocol being transmitted; therefore the Packet Filtering parameter is based on the Aprisa SR+ addressing and network protocols, not the user (SCADA, etc.) traffic protocols.
24 | About the Radio
Product Features
Functions
Point-to-Point (PTP) or Point-to-Multipoint (PMP) operation Licensed frequency bands:
VHF 135 135-175 MHz VHF 220 215-240 MHz UHF 320 320-400 MHz UHF 400 400-470 MHz UHF 450 450-520 MHz UHF 700 757-758 MHz and 787-788 MHz UHF 896 896-902 MHz UHF 928 928-960 MHz
Channel sizes – software selectable:
12.5 kHz 20 kHz 25 kHz 50 kHz 75 kHz
Adaptive Coding and Modulation (ACM): QPSK to 64 QAM Half duplex or full duplex RF Point-To-Multipoint operation Full duplex RF Point-To-Point operation Ethernet data interface and RS-232 / RS-485 asynchronous multiple port options Software selectable dual / single antenna port options (dual antenna port for external duplexers or
filters)
Data encryption and authentication using 128,192 and 256 bit AES and CCM security standards Terminal server operation for transporting RS-232 / RS-485 traffic over IP or Ethernet and
converting IP packets to a local physical serial port
Mirrored Bits ® and SLIP support for RS-232 IEEE 802.1Q VLAN support with single and double VLAN tagged and add/remove VLAN manipulation
to adapt to the appropriate RTU / PLCs
QoS supports using IEEE 802.1p VLAN priority bits to prioritize and handle the VLAN / traffic types QoS per port (Ethernet, serial, management) L2 / L3 / L4 filtering for security and avoiding narrow band radio network overload L3 Gateway Router mode with standard static IP route for simple routing network integration L3 Router mode with per Ethernet interface IP address and subnet L2 Bridge mode with VLAN aware for standard Industrial LAN integration Ethernet header and IP/TCP / UDP ROHC header compression to increase the narrow band radio
capacity
Ethernet and serial payload compression to increase the narrow band radio capacity Pseudo peer to peer communication between remote stations through base-repeater or repeater
stations
SuperVisor web management support for element and sub-network (base-repeater-remotes)
management
SNMPv1/2/3 & encryption MIB supports for 4RF SNMP manager or third party SNMP agent network
management
About the Radio | 25
SNMP context addressing for compressed SNMP access to remote stations SNTP for accurate wide radio network time and date RADIUS security for remote user authorization, authentication and accounting Build-configuration / flexibility of serial and Ethernet interface ports (3+1, 2+2, 4+0) Radio and user interface redundancy (provided with Aprisa SR+ Protected Station) Protected Station fully hot swappable and monitored hot standby Power optimized with sleep modes Transparent to all common SCADA protocols; e.g. Modbus, IEC 60870-5-101/104, DNP3 or similar Complies with international standards, including ETSI, FCC, IC, ACMA, EMC, safety and
environmental standards
Security
The Aprisa SR+ provides security features to implement the key recommendations for industrial control systems. The security provided builds upon the best in class from multiple standards bodies, including:
IEC/TR 62443 (TC65) ‘Industrial Communications Networks – Network and System Security’ IEC/TS 62351 (TC57) ‘Power System Control and Associated Communications – Data and
Communication Security’
FIPS PUB 197, NIST SP 800-38C, IETF RFC3394, RFC3610 and IEEE P1711/P1689/P1685 FIPS 140-2: Security Requirements for Cryptographic Modules
The security features implemented are:
Data encryption
Counter Mode Encryption (CTR) using Advanced Encryption Standard (AES) 128, 192, 256 bit, based on FIPS PUB 197 AES encryption (using Rijndael version 3.0)
Data authentication
NIST SP 800-38C Cipher Block Chaining Message Authentication Code (CBC-MAC) based on RFC 3610 using Advanced Encryption Standard (AES)
Data payload security
CCM Counter with CBC-MAC integrity (NIST special publication 800-38C)
Secured management interface protects configuration L2 / L3 / L4 Address filtering enables traffic source authorization Proprietary physical layer protocol and modified MAC layer protocol based on standardized IEEE
802.15.4
Licensed radio spectrum provides recourse against interference SNMPv3 with Encryption for NMS secure access Secure USB software upgrade Key Encryption Key (KEK) based on RFC 3394, for secure Over The Air Re-keying (OTAR) of
encryption keys
User privilege allows the accessibility control of the different radio network users and the user
permissions
26 | About the Radio
Performance
Typical deployment of 30 remote stations from one base station with a practical limit of a few
hundred remote stations
Long distance operation High transmit power Low noise receiver Forward Error Correction Electronic tuning over the frequency band Thermal management for high power over a wide temperature range
Usability
Configuration / diagnostics via front panel Management Port USB interface, Ethernet interface Built-in webserver SuperVisor with full configuration, diagnostics and monitoring functionality,
including remote station configuration / diagnostics over the radio link
LED display for on-site diagnostics Dedicated alarm port Software upgrade and diagnostic reporting via the host port USB flash drive Over-the-air software distribution and upgrades Simple installation with integrated mounting holes for wall, DIN rail and rack shelf mounting
About the Radio | 27
Modulation
FEC Coding
Capacity
QPSK (High Gain)
Max Coded FEC
Minimum
QPSK (Low Gain)
Min Coded FEC
16QAM (High Gain)
Max Coded FEC
QPSK
No FEC
16QAM (Low Gain)
Min Coded FEC
16QAM
No FEC
64QAM (High Gain)
Max Coded FEC
64QAM (Low Gain)
Min Coded FEC
Maximum
Modulation
FEC Coding
Coverage
QPSK (High Gain)
Max Coded FEC
Maximum
QPSK (Low Gain)
Min Coded FEC
16QAM (High Gain)
Max Coded FEC
QPSK
No FEC
16QAM (Low Gain)
Min Coded FEC
64QAM (High Gain)
Max Coded FEC
16QAM
No FEC
64QAM (Low Gain)
Min Coded FEC
Minimum
System Gain vs FEC Coding
This table shows the relationship between modulation, FEC coding, system gain, capacity and coverage.
Maximum FEC coding results in the highest system gain, the best coverage but the least capacity Minimum FEC coding results in lower system gain, lower coverage but higher capacity No FEC coding results in the lowest system gain, the lowest coverage but the highest capacity
This table defines the modulation order based on gross capacity:
This table defines the modulation order based on receiver sensitivity:
28 | About the Radio
Architecture
The Aprisa SR+ Architecture is based around a layered TCP/IP protocol stack:
Physical
Proprietary wireless RS-232 and Ethernet interfaces
Link
Proprietary wireless (channel access, ARQ, segmentation) VLAN aware Ethernet bridge
Network
Standard IP Proprietary automatic radio routing table population algorithm
Transport
TCP, UDP
Application
HTTPS web management access through base station with proprietary management application software including management of remote stations over the radio link
SNMPv1/2/3 for network management application software
Product Operation
There are three components to the wireless interface: the Physical Layer (PHY), the Data Link Layer (DLL) and the Network Layer. These three layers are required to transport data across the wireless channel in the Point-to-Multipoint (PMP) configuration. The Aprisa SR+ DLL is largely based on the 802.15.4 Media Access Control (MAC) layer using a proprietary implementation.
Physical Layer
The Aprisa SR+ PHY uses a one or two frequency half duplex transmission mode which eliminates the need for a duplexer. However, a Dual Antenna port option is available for separate transmit and receive antenna connection to support external duplexers or filters (half duplex operation).
Remote nodes are predominantly in receive mode with only sporadic bursts of transmit data. This reduces power consumption.
The Aprisa SR+ is a packet based radio. Data is sent over the wireless channel in discrete packets / frames, separated in time. The PHY demodulates data within these packets with coherent detection.
The Aprisa SR+ PHY provides carrier, symbol and frame synchronization predominantly through the use of preambles. This preamble prefixes all packets sent over the wireless channel which enables fast Synchronization.
About the Radio | 29
Option
Function
Access Request
Channel access scheme where the base stations controls the communication on the channel. Remotes ask for access to the channel, and the base station grants access if the channel is not occupied.
Listen Before Send
Channel access scheme where network elements listen to ensure the channel is clear, before trying to access the channel.
Data Link Layer / MAC layer
The Aprisa SR+ PHY enables multiple users to be able to share a single wireless channel; however a DLL is required to manage data transport. The two key components to the DLL are channel access and hop by hop transmission.
Channel Access
The Aprisa SR+ radio has two modes of channel access, Access Request and Listen Before Send.
Access Request
This scheme is particularly suited to digital SCADA systems where all data flows through the base station. In this case it is important that the base station has contention-free access as it is involved in every transaction. The channel access scheme assigns the base station as the channel access arbitrator and therefore inherently it has contention-free access to the channel. This means that there is no possibility of contention on data originating from the base station. As all data flows to or from the base station, this significantly improves the robustness of the system.
All data messages are controlled via the AG (access grant) control message and therefore there is no possibility of contention on the actual end user data. If a remote station accesses the channel, the only contention risk is on the AR (access request) control message. These control messages are designed to be as short as possible and therefore the risk of collision of these control messages is significantly reduced. Should collisions occur these are resolved using a random back off and retry mechanism.
As the base station controls all data transactions multiple applications can be effectively handled, including a mixture of polling and report by exception.
Access Request – Full Duplex
This scheme is used in a network with a full duplex base / master station and half duplex repeater / remote stations. Full duplex Access Request utilizes the existing (half duplex) Access Request scheme as described in the section above.
The base / master station can transmit while simultaneously receiving from the remote / repeaters. This increases Access Request efficiency, especially in the report by exception scheme (spontaneous messages).
This feature can be operated on full duplex hardware only (see ‘Product Options’ section on page 329).
If the Access Scheme is set to full duplex on a repeater, packets start to egress a repeater before the entire packet has been received by the repeater. This scheme reduces latency on long packets through a repeater and improves performance in Overlapping Coverage mode.
To allow this new MAC scheme to operate, two new RF Network Detail parameters have been added; Base Station ID and Repeater Network Segment ID (see ‘Base Station ID’ on page 89 and ‘Repeater Network Segment ID’ on page 90).
30 | About the Radio
Listen Before Send
The Listen Before Send channel access scheme is realized using Carrier Sense Multiple Access (CSMA). In this mode, a pending transmission requires the channel to be clear. This is determined by monitoring the channel for other signals for a set time prior to transmission. This results in reduced collisions and improved channel capacity.
There are still possibilities for collisions with this technique e.g. if two radios simultaneously determine the channel is clear and transmit at the same time. In this case an acknowledged transaction may be used. The transmitter requests an ACK to ensure that the transmission has been successful. If the transmitter does not receive an ACK, then random backoffs are used to reschedule the next transmission.
Hop by Hop Transmission
Hop by Hop Transmission is realized in the Aprisa SR+ by adding a MAC address header to the packet. For
802.15.4, there are 2 addresses, the source and destination addresses.
Adaptive Coding and Modulation
The Aprisa SR+ provides Adaptive Coding and Modulation (ACM) which maximizes the use of the RF path to provide the highest radio capacity available.
ACM automatically adjusts the modulation coding and FEC code rate in the remote to base direction of transmission based on the signal quality for each individual remote radio.
When the RF path is healthy (no fading), modulation coding is increased and the FEC code rate is decreased to maximize the data capacity.
If the RF path quality degrades, modulation coding is decreased and the FEC code rate is increased for maximum robustness to maintain path connectivity.
About the Radio | 31
Network Layer
Packet Routing
Aprisa SR+ is a standard static IP router which routes and forwards IP packet based on standard IP address and routing table decisions.
Aprisa SR+ router mode (see figure below), enables the routing of IP packets within the Aprisa SR+ wireless network and in and out to the external router / IP RTUs devices connected to the Aprisa SR+ wired Ethernet ports.
Within the Aprisa SR+ Router mode, each incoming Ethernet packet on the Ethernet port is stripped from its Ethernet header to reveal the IP packet and to route the IP packet based on its routing table. If the destination IP address is one of the RTUs, the packet is then forwarded to the wireless ports and broadcasted as a PMP wireless packet to all the repeater / remotes stations. The appropriate remote then routes the IP packet and forwards it based on its routing table to the appropriate Ethernet port, encapsulating the appropriate next hop MAC header and forwarding it to the RTU. The RTU can then interpret and process the IP data and communication is established between the RTU and the initiating communication device.
32 | About the Radio
Static IP Router
The Aprisa SR+ works in the point-to-multipoint (PMP) network as a standard static IP router with the Ethernet and wireless / radio as interfaces and serial ports using terminal server as a virtual interface.
The Aprisa SR+ static router is semi-automated operation, where the routing table is automatically created in the base station and populated with routes to all remotes and repeater stations in the network during the registration process and vice versa, where the routing table is automatically created in remote and repeater stations and populated with routes to base station during the registration process. Updates occur when remote is disconnected from network for any reason, with the routing table updated in a controlled fashion.
Also, in decommission operation, the base station routing tables are completely flushed allowing an automatic rebuild. This avoids the user manually inserting / removing of multiple static routes to build / change the routes in the network which might be tedious and introduce significant human error. The Aprisa SR+ works as a static IP router without using any routing protocol and therefore does not have the overhead of a routing protocol for better utilization of the narrow bandwidth network.
In addition to the semi-automated routes, the user can manually add / remove routes in the routing table for the radio interface, Ethernet Interface and for routers which are connected to the radio network.
The Aprisa SR+ base station is used as a gateway to other networks. Thus, a configurable IP address default gateway can be set using a static route in the routing table with a destination IP address of the destination network address. It is recommended to use a real network IP address (actual device IP) for the gateway and not 0.0.0.0.
The Aprisa SR+ sub-netting rules distinguish between the wireless interface and the remote Ethernet interface where RTUs are connected. The entire wireless network is set on a single IP subnet, while each Aprisa SR+ remote’s Ethernet interface is set to a different subnet network. In this way, the user can easily distinguish between the remotes subnet IP addresses.
About the Radio | 33
Destination Address
Destination Mask
Gateway Address
Static Route Setting at ?
192.168.3.0
255.255.255.0
192.168.2.1
Base station
192.168.3.0
255.255.255.0
192.168.2.2
Remote station
The Radio Network as a Gateway Router
The Aprisa SR+ point-to-multipoint radio network can be considered as a gateway router where the ‘network Ethernet interface’ on each radio in the network is the ‘router port’.
The routing table for all directly attached devices to the Aprisa SR+ network, at the Base or the Remote stations is automatically built and no static routes are required to be entered for those device routes.
The ‘Radio interface IP address’ is used internally for the radio network and automatic routes. It is not
used when setting static routes or default gateways.
Static route IP addresses or the default gateway should use the ‘network Ethernet interface’ IP address.
External network routers should be set with a high metric for the SR+ path, to prevent route updates being sent over the radio network.
The Radio Network as a Router – Example
The purpose of this example is to determine the static route setting for router R2 in the base station and remote station in the following network.
Since the Aprisa SR+ network should be considered as a router where the network Ethernet interface is the ‘router port’, the network configuration for setting the static routes or the default gateway IP addresses is described in the follow figure:
Thus, the static route setting for router R2 at the Aprisa SR+ base station and remote station will be:
Note: The radio network (base station and remote stations) will automatically build routes to the attached device e.g. SCADA Master station or attached router e.g. router R1 so static routes are not required for these devices.
34 | About the Radio
Static IP Router – Human Error Free
To ensure correct operation, the Aprisa SR+ router base station alerts when one (or more) of the devices is not configured for router mode or a duplicated IP is detected when manually added.
When the user changes the base station IP address / subnet, the base station sends an ARP unsolicited announcement message and the remotes / repeaters auto-update their routing table accordingly. This also allows the router that is connected to the base station to update its next hop IP address and its routing table.
When the user changes the remote / repeater station IP address / subnet, a re-registration process in the base station then auto-updates its routing table accordingly.
Terminal Server - Transition to Converged Ethernet / IP Network
Customers that are transitioning their SCADA network to an Ethernet / IP SCADA network, can simultaneously operate their legacy serial RTUs, not as a separate serial network to the new Ethernet / IP network, but as part of the Ethernet / IP network, by using the terminal server feature.
The Aprisa SR+ terminal server is an application running in the radio that encapsulates serial traffic into Ethernet / IP traffic. For SCADA networks, this enables the use of both serial and Ethernet / IP RTUs within an Ethernet / IP based SCADA network.
About the Radio | 35
Bridge Mode with VLAN Aware
Ethernet VLAN Bridge / Switch Overview
The Aprisa SR+ in Bridge mode of operation is a standard Ethernet Bridge based on IEEE 802.1d or VLAN Bridge based on IEEE 802.1q/p which forward / switch Ethernet packet based on standard MAC addresses and VLANs using FDB (forwarding database) table decisions. VLAN is short for Virtual LAN and is a virtual separate network, within its own broadcast domain, but across the same physical network.
VLANs offer several important benefits such as improved network performance, increased security and simplified network management.
The Aprisa SR+ Bridge mode (see figure below), is the default mode of operation and it enables the switching / bridging of Ethernet VLAN tagged or untagged packets within the Aprisa SR+ wireless network and in and out to the external Industrial LAN network and RTUs devices connected to the Aprisa SR+ wired Ethernet ports or serial ports through the terminal server function.
Within the Aprisa SR+ Bridge mode, each incoming Ethernet packet is inspected for the destination MAC address (and VLAN) and looks up its FDB table for information on where to send the specific Ethernet frame. If the FDB table doesn’t contain the specific MAC address, it will flood the Ethernet frame out to all ports in the broadcast domain and when using VLAN, the broadcast domain is narrowed to the specific VLAN used in the packet (i.e. broadcast will be done only to the ports which configured with that specific VLAN).
The FDB table is used to store the MAC addresses that have been learnt and the ports associated with that MAC address. If the destination MAC address is one of the RTUs, the packet is then forwarded to the wireless ports and broadcast as a PMP wireless packet to all the repeater / remote stations. The appropriate remote then switches the Ethernet packet and forwards it based on its FDB table (based on the MAC or VLAN & MAC) to the appropriate Ethernet port to the RTU. The RTU can then interpret and process the Ethernet / IP data and communication is established between the RTU and the initiating communication device.
36 | About the Radio
VLAN Bridge Mode Description
General – Aprisa SR+ VLAN Bridge
The Aprisa SR+ works in a point-to-multipoint (PMP) network as a standard VLAN bridge with the Ethernet and wireless / radio as interfaces and serial ports using terminal server as a virtual interface.
The Aprisa SR+ is a standard IEEE 802.1q VLAN bridge, where the FDB table is created by the bridge learning / aging process. New MACs are learnt and the FDB table updated. Unused MACs are aged out and flushed automatically after aging period.
VLANs are statically configured by the user on the ports where a Virtual LAN is required across the radio network. An example of VLAN isolation of traffic type is shown in the figure below, where RTUs #1, 4 and 6 together with SCADA meter master form a Virtual LAN which is isolated from the other devices, even though they are on the same physical network. VLAN management can be used to manage with external NMS all the Aprisa SR+ devices on the radio network and is automatically created with a VLAN ID = 1 default value. The VLAN ID can be changed by the user later on.
Each device in the Aprisa SR+ bridge is identified by its own IP address, as shown in the figure.
About the Radio | 37
VLANs – Single, Double and Trunk VLAN ports
The Aprisa SR+ supports single VLAN (CVLAN), double VLAN (SVLAN) and trunk VLAN.
A single VLAN can be used to segregate traffic type.
A double VLAN can be used to distinguish between Aprisa SR+ sub-networks (base-repeater-remote), where the outer SVLAN is used to identify the sub-network and the CVLAN is used to identify the traffic type. In this case, a double tagged VLAN will be forwarded across the Industrial LAN network and switched based on the SVLAN to the appropriate Aprisa SR+ sub-network. When packet enters the Aprisa SR+ network, the SVLAN will be stripped off (removed) and the forwarding will be done based on the CVLAN, so only a single VLAN will pass through over the radio network and double VLAN will be valid on the borders of the radio network.
Trunk VLAN is also supported by the Aprisa SR+ where the user can configure multiple VLANs on a specific Ethernet port, creating a trunk VLAN port. For example, in the above figure, a single trunk VLAN port is created between the switch and the Aprisa SR+ base station, carrying VLAN ID #1, 20, 30 and 40.
VLAN Manipulation – Add / Remove VLAN Tags
In order to support double VLAN and different device types connected to the Aprisa SR+ e.g. switches, RTUs, etc, which can be VLAN tagged or untagged / plain Ethernet devices, add / remove VLAN manipulation is required.
In an Aprisa SR+ VLAN tagged network, a remote Aprisa SR+ connected to a plain RTU without VLAN support, will remove (strip-off) the VLAN tag from the packet before sending it to the RTU. On the other direction, when the RTU is sending an untagged packet, the Aprisa SR+ will add (append) an appropriate user pre-configure VLAN tag before sending it over the air to the base station. This is shown in the above figure on untagged RTU #5 and 7.
QoS using VLAN
VLANs carry 3 priority bits (PCP field) in the VLAN tag allowing prioritization of VLAN tagged traffic types with 8 levels of priority (where 7 is the highest priority and 0 is the lowest priority). The Aprisa SR+ supports QoS (Quality of Service) where the priority bits in the VLAN tagged frame are evaluated and mapped to four priority levels and four queues supported by the Aprisa SR+ radio. Packets in the queues are then scheduled out in a strict priority fashion for transmission over-the-air as per the priority level from high to low.
38 | About the Radio
Avoiding Narrow Band Radio Traffic Overloading
The Aprisa SR+ supports mechanisms to prevent narrowband radio network overload:
1. L3/L4 Filtering
The L3 filtering can be used to block undesired traffic from being transferred on the narrow band channel, occupying the channel and risking the SCADA critical traffic. L3/4 filtering has the ability to block a known IP address and applications using TCP/IP or UDP/IP protocols with multiple filtering rules. The L3 (/L4) filter can block/forward (discard/process) a specific IP address and a range of IP addresses. Each IP addressing filtering rule set can also be set to filter a L4 TCP or UDP port/s which in most cases relates to specific applications as per IANA official and unofficial well-known ports. For example, filter and block E­mail SMTP or TFTP protocol as undesired traffic over the SCADA network. The user can block a specific or range of IP port addresses, examples SMTP (Simple Mail Transfer Protocol) TCP port 25 or TFTP (Simple Trivial File Transfer Protocol) UDP port 69.
2. L2 Address Filtering
L2 Filtering (Bridge Mode) provides the ability to filter radio link traffic based on specified Layer 2 MAC addresses. Destination MAC (DA) addresses and a Source MAC (SA) addresses and protocol type (ARP, VLAN, IPv4, IPv6 or Any type) that meet the filtering criteria will be transmitted over the radio link. Traffic that does not meet the filtering criteria will not be transmitted over the radio link.
3. L2 Port VLANs Ingress Filtering and QoS
Double VLAN (Bridge Mode)
Double VLAN is used to distinguish/segregate between different radio sub-networks (Base-repeaters­remotes). Traffic with double VLANs which are not destined to a specific sub-network will be discarded on the ingress of the radio sub-network, avoiding the overload of the radio sub-network.
Single VLAN (Bridge Mode)
Single VLAN is used to distinguish/segregate between different traffic types assigned by the user in its industrial corporate LAN. In order to avoid the overload of the radio network, traffic with single VLANs which are not destined to a specific radio network will be discarded on the Ethernet ingress port of the radio network. All single VLANs which set and are eligible will be transmitted over the radio link.
QoS using 802.1p priority bits (Bridge Mode)
The priority bits can be used in the VLAN tagged frames to prioritized critical mission SCADA traffic and ensure SCADA traffic transmission relative to any other unimportant traffic. In this case, traffic based on VLAN priority (priority 0 to 7) enters one of the four priority queues of the Aprisa SR+ (Very High, High, Medium and Low). Traffic leaves the queues (to the radio network) from highest priority to lowest in a strict priority fashion.
4. Ethernet port QoS
The Aprisa SR+ supports ‘Ethernet Per Port Prioritization’. Each Ethernet port can be assigned a priority and traffic shall be prioritized accordingly. This is quite useful in networks where customers do not use VLANs or cannot use 802.1p prioritization.
About the Radio | 39
5. Ethernet Data and Management Priority and Background Bulk Data Transfer Rate
Alternatively to VLAN priority, users can control the Ethernet traffic priority (vs serial), management priority and rate in order to control the traffic load of the radio network, where important and high priority data (SCADA) will pass-through first assuring SCADA network operation. The user can set the use of the Ethernet Data Priority, which controls the priority of the Ethernet customer traffic relative to the serial customer traffic and can be set to one of the four queues. The Ethernet Management Priority controls the priority of the Ethernet management traffic relative to Ethernet customer traffic and can be set to one of the four queues. The Background Bulk Data Transfer Rate sets the data transfer rate (high, medium, low) for large amounts of management data.
6. Ethernet Packet Time to Live
Another aspect of avoiding overload radio network is the Ethernet packet TTL, which is used to prevent old, redundant packets being transmitted through the radio network. This sets the time an Ethernet packet is allowed to live in the system before being dropped if it cannot be transmitted over the air.
7. Robust Header Compression (ROHC) and Payload Compression
Aprisa SR+ supports ROHC (Robust Header Compression RFC3095). ROHC is a standard way to compress IP, UDP and TCP headers and this significantly increases IP traffic throughput especially in narrow band network.
Aprisa SR+ supports payload compression. A Lempel–Ziv (LZ) algorithm is used to efficiently compress up to 50% traffic with high percentage of repetitive strings. Both serial and Ethernet / IP payload traffic are compressed.
40 | About the Radio
Interfaces
Antenna Interface
2 x TNC, 50 ohm, female connectors
Single or dual antenna ports (with or without the use of external duplexer / filter)
Ethernet Interface
2, 3 or 4 ports 10/100 base-T Ethernet layer 2 switch using RJ45
Used for Ethernet user traffic and radio sub-network management.
RS-232 / RS-485 Interface
2, 1 or 0 RS-232 asynchronous ports using RJ45 connector Optional 1x RS-232 or RS-485 asynchronous port using USB host port with USB to RS-232 or USB to
RS-485 converters
USB Interfaces
1 x Management port using USB micro type B connector
Used for product configuration with the Command Line Interface (CLI).
1 x Host port using USB standard type A connector
Used for software upgrade, diagnostic reporting and configuration save / restore.
Protect Interface
1x Protect interface port
Used for the Protected Station operation.
Alarms Interface
1x Alarm port using RJ45 connector
Used to provide 2 x hardware alarm inputs and 2 x hardware alarm outputs
About the Radio | 41
Interface Port Option
Part Number
2 Ethernet ports and 2 RS-232 serial ports
APSQ-N400-SSC-HD-22-ENAA
Designator
Description
10 - 30 VDC; 3A
+10 to +30 VDC (negative ground) DC power input using Molex 2 pin male screw fitting connector.
AC/DC and DC/DC power supplies are available as accessories. See ‘External Power Supplies’ on page 63.
ETHERNET 1 & 2
Integrated 10Base-T/100Base-TX layer-3 Ethernet switch using RJ45 connectors. Used for Ethernet user traffic and product management. See ‘Ethernet > Port Setup’ on page 138.
SERIAL 1 & 2
Two ports of RS-232 serial using RJ45 connectors. Used for RS-232 asynchronous user traffic. See ‘Serial > Port Setup’ on page 124.
Host Port using a USB standard type A connector. Used for software upgrade and diagnostic reporting and optional: 1x RS-232
asynchronous port with USB to RS-232 converter. See ‘Software Upgrade’ on page 358 and ‘Maintenance > General’ on page 208.
ALARM
Alarm Port using a RJ45 connector. Used for two alarm inputs and two alarm outputs. See ‘Hardware Alarms Interface’ on page 396.
MGMT
Management Port using a USB micro type B connector. Used for product configuration with the Command Line Interface. See ‘Connecting to the Management Port’ on page 322.
PROTECT
Protect port. Used for Protected Station operation.
TX / ANT
TNC, 50 ohm, female connector for connection of antenna feeder cable for half duplex RF operation or the Transmit connection to an external duplexer for full duplex RF operation or to an external filter.
See ‘Coaxial Feeder Cables’ on page 55.
RX
TNC, 50 ohm, female connector for the Receive connection to an external duplexer for full duplex RF operation or to an external filter.
Front Panel Connections
Example; 2 Ethernet ports and 2 RS-232 serial ports - see ‘Data Interface Ports’ on page 329 for the other interface port options.
All connections to the radio are made on the front panel. The functions of the connectors are (from left to right):
42 | About the Radio
OK
MODE
AUX
TX
RX
Flashing
Red
Radio has not
registered
Solid
Red
Alarm present
with severity
Critical, Major
and Minor
TX path fail
RX path fail
Flashing
Orange
Diagnostics
Function
Active
OTA software
distribution
Management
traffic on the
USB MGMT
port
Solid
Orange
Alarm present
with Warning
Severity
Device detect
on the USB
host port
(momentary)
Flashing
Green
Software
Upgrade
Successful
Stand-by radio
in protected
station
Tx / Rx Data
on the USB
host port
RF path TX is
active
RF path RX is
active
Solid
Green
Power on and
functions OK
and no alarms
Processor
Block is OK
or active radio
in protected
station
USB interface
OK
Tx path OK
Rx path OK
LED Colour
Severity
Green
No alarm – information only
Orange
Warning alarm
Red
Critical, major or minor alarm
LED Display Panel
The Aprisa SR+ has an LED Display panel which provides on-site alarms / diagnostics without the need for PC.
Normal Operation
In normal radio operation, the LEDs indicate the following conditions:
About the Radio | 43
Single Radio Software Upgrade
During a radio software upgrade, the LEDs indicate the following conditions:
Software upgrade started - the OK LED flashes orange Software upgrade progress indicated by running AUX to MODE LEDs Software upgrade completed successfully - the OK LED flashes green Software upgrade failed - any LED flashing red during the upgrade
Network Software Upgrade
During a network software upgrade, the MODE LED flashes orange on the base station and all remote stations.
44 | About the Radio
Test Mode
Remote station and repeater station radios have a Test Mode which presents a real time visual display of the RSSI on the LED Display panel. This can be used to adjust the antenna for optimum signal strength (see ‘Maintenance > Test Mode’ on page 210 for Test Mode options).
To enter Test Mode, press and hold the TEST button on the radio LED panel until all the LEDs flash green (about 3 - 5 seconds). The response time is variable and can be up to 5 seconds.
To exit Test Mode, press and hold the TEST button until all the LEDs flash red (about 3 – 5 seconds).
Note: Test Mode traffic has a low priority but could affect customer traffic depending on the relative priorities setup.
The RSSI result is displayed on the LED Display panel as a combination of LED states:
About the Radio | 45
Network Management
The Aprisa SR+ contains an embedded web server application (SuperVisor) to enable element management with any major web browser (such as Mozilla Firefox or Microsoft® Internet Explorer).
SuperVisor enables operators to configure and manage the Aprisa SR+ base station radio and repeater / remote station radios over the radio link.
The key features of SuperVisor are:
Full element management, configuration and diagnostics Manage the entire network from the Base Station (remote management of elements) Managed network software distribution and upgrades Performance and alarm monitoring of the entire network, including RSSI, alarm states, time-
stamped events, etc.
View and set standard radio configuration parameters including frequencies, transmit power,
channel access, serial, Ethernet port settings
Set and view security parameters User management Operates over a secure HTTPS session on the access connection to the base station
SuperVisor, when connected to the base station radio allows management of all radios in the network. The Network Table displays a list of all the registered remote stations for the base station and provides management access to each of the remote stations (see ‘Network Status > Network Table’ on page 271).
46 | About the Radio
Hardware Alarm Inputs / Outputs
The Aprisa SR+ provides two hardware alarm inputs to generate alarm events in the network and two hardware alarm outputs to receive alarm events from the network.
The hardware alarm inputs and outputs are part of the event system. All alarm events can be viewed in SuperVisor event history log (see ‘Events > Event History’ on page 223). These include the alarm events generated by the hardware alarm inputs.
Alarm Input to SNMP Trap
An alarm event from an Aprisa SR+ hardware alarm input can be sent over the air to any SNMP Manager using SNMP traps.
Alarm Input to Alarm Output
An alarm event from an Aprisa SR+ hardware alarm input can be mapped to an hardware alarm output of another SR+ using an event action setup (see ‘Events > Event Action Setup’ on page 231).
Aprisa SR Alarm Input to Aprisa SR+ Alarm Output
The Aprisa SR+ event action setup feature is compatible with the Aprisa SR.
Since, the Aprisa SR only supports hardware alarm inputs, the Aprisa SR+ can be used as an option to provide a hardware alarm output. As shown in the figure below, an Aprisa SR+ connected on the same IP network of the Aprisa SR, alarm events from the SR hardware alarm input can be mapped to the hardware alarm output of the SR+ using an event action setup.
Implementing the Network | 47
4. Implementing the Network
Network Topologies
The following are examples of typical network topologies:
Point-To-Point Network
Point-to-Multipoint Network
Point-to-Multipoint with Repeater 1
Point-to-Multipoint with Repeater 2
48 | Implementing the Network
Initial Network Deployment
Install the Base Station
To install the base station in your network:
1. Install the base station radio (see ‘Installing the Radio’ on page 58).
2. Set the radio Network ID to a unique ID in your entire network (see ‘Terminal > Device’ on page 88).
3. Set the radio operating mode to ‘base station’ (see ‘Terminal > Operating Mode’ on page 94).
4. Set the radio IP address (see ‘IP > IP Setup > Bridge / Gateway Router Modes’ on page 150).
5. Set the radio frequencies to the frequencies you wish to operate from (see ‘Radio > Radio Setup’ on page 103).
6. Set the radio security settings (see ‘Security > Setup’ on page 183).
Installing the Remote Stations
To install the remote stations in your network:
1. Install the remote station radio (see ‘Installing the Radio’ on page 58).
2. Set the radio Network ID to the same ID as the other stations in the network (see ‘Terminal > Device’ on page 88).
3. If repeater used in radius 1, set the network radius=2 on all network stations (see ‘Terminal > Device’ on page 88).
4. Set the radio operating mode to ‘remote station’ (see ‘Terminal > Operating Mode’ on page 94).
5. Set the radio IP address (see ‘IP > IP Setup > Bridge / Gateway Router Modes’ on page 150).
6. Set the radio frequencies to the base station / repeater station frequencies you wish to operate from (see ‘Radio > Radio Setup’ on page 103).
7. Set the radio security settings to the same as the base station (see ‘Security > Setup’ on page 183).
The base station will automatically allocate a node address to the new remote station.
Install a Repeater Station
To install a repeater station in your network:
1. Install the repeater station radio (see ‘Installing the Radio’ on page 58).
2. Set the radio Network ID to the same ID as the other stations in the network (see ‘Terminal > Device’ on page 88).
3. Increase the radio network radius by one on all stations in the network (see ‘Terminal > Device’ on page 88).
4. Set the radio operating mode to ‘repeater station’ (see ‘Terminal > Operating Mode’ on page 94).
5. Set the radio IP address (see ‘IP > IP Setup > Bridge / Gateway Router Modes’ on page 150).
6. Set the radio frequencies to base station frequencies you wish to operate from (see ‘Radio > Radio Setup’ on page 103).
7. Set the radio security settings to the same as the base station (see ‘Security > Setup’ on page 183).
The base station will automatically allocate a node address to the new repeater station.
Implementing the Network | 49
Network Changes
Adding a Repeater Station
To add a repeater station to your network:
1. Install the repeater station radio (see ‘Installing the Radio’ on page 58).
2. Set the radio Network ID to the same ID as the other stations in the network (see ‘Terminal > Device’ on page 88).
3. Set the radio IP address (see ‘IP > IP Setup > Bridge / Gateway Router Modes’ on page 150).
4. Set the radio frequencies to the base station frequencies you wish to operate from (see ‘Radio > Radio Setup’ on page 103).
5. Set the radio operating mode to ‘repeater station’ (see ‘Terminal > Operating Mode’ on page 94).
6. Increase the radio network radius by one on all stations in the network (see ‘Terminal > Device’ on page 88).
The base station will automatically allocate a node address to the new repeater station.
To remove a repeater station from your network:
1. Turn the power off on the remote station radios operating from the repeater station radio you wish to remove.
2. Turn the power off on the repeater station radio you wish to remove.
3. Decrease the network radius by one on all stations in the network (see ‘Terminal > Device’ on page
88).
Adding a Remote Station
To add a remote station to your network:
1. Install the remote station radio (see ‘Installing the Radio’ on page 58).
2. Set the radio Network ID to the same ID as the other stations in the network (see ‘Terminal > Device’ on page 88).
3. If repeater used in radius 1, set the network radius=2 on all network stations (see ‘Terminal > Device’ on page 88).
4. Set the radio IP address (see ‘IP > IP Setup > Bridge / Gateway Router Modes’ on page 150).
5. Set the radio frequencies to the base station / repeater station frequencies you wish to operate from (see ‘Radio > Radio Setup’ on page 103).
6. Set the radio operating mode to ‘remote station’ (see ‘Terminal > Operating Mode’ on page 94).
The base station will automatically allocate a node address to the new remote station.
To remove a remote station from your network:
1. Turn the power off on the remote station radio you wish to remove. This is the only action that is required.
Note: The remote station will continue to show in the Network Table list.
Preparation | 51
5. Preparation
Bench Setup
Before installing the links in the field, it is recommended that you bench-test the links. A suggested setup for basic bench testing is shown below:
When setting up the equipment for bench testing, note the following:
Earthing
Each radio should be earthed at all times. The radio earth point should be connected to a protection earth.
Attenuators
In a bench setup, there should be 60 - 80 dB at up to 1 GHz of 50 ohm coaxial attenuation, capable of handling the transmit power of +37 dBm (5 W) between the radios’ antenna connectors.
Splitter
If more than two radios are required in your bench setup, a multi-way splitter is required. The diagram shows a two way splitter. This splitter should be 50 ohm coaxial up to 1 GHz and capable of handling the transmit power of +37 dBm (5 W).
Cables
Use double-screened coaxial cable that is suitable for use up to 1 GHz at ≈ 1 metre.
CAUTION: Do not apply signals greater than +10 dBm to the antenna connection as they can damage the receiver.
52 | Preparation
Factor
Explanation
Frequency
Often used in 380-530 MHz bands
Gain
Varies with size (5 dBi to 8 dBi typical)
Wind loading
Minimal
Tower aperture required
Minimal
Size
Range from 2 m to 3 m length
Polarization
Vertical
Path Planning
The following factors should be considered to achieve optimum path planning:
Antenna Selection and Siting Coaxial Cable Selection Linking System Plan
Antenna Selection and Siting
Selecting and siting antennas are important considerations in your system design. The antenna choice for the site is determined primarily by the frequency of operation and the gain required to establish reliable links.
Base or Repeater Station
The predominant antenna for a base station or a repeater station is an omni-directional collinear gain antenna.
Omni Directional Collinear Antennas
Preparation | 53
Factor
Explanation
Frequency
Often used in 350-600 MHz bands
Gain
Varies with size (typically 11 dBi to 16 dBi)
Stackable gain increase
2 Yagi antennas (+ 2.8 dB) 4 Yagi antennas (+ 5.6 dB)
Size
Range from 0.6 m to 3 m in length
Front to back ratio
Low (typically 18 to 20 dB)
Remote station
There are two main types of directional antenna that are commonly used for remote stations, Yagi and corner reflector antennas.
Yagi Antennas
It is possible to increase the gain of a Yagi antenna installation by placing two or more of them in a stack. The relative position of the antennas is critical.
Example of stacked antennas
54 | Preparation
Factor
Explanation
Frequency
Often used in 330-960 MHz bands
Gain
Typically 12 dBi
Size
Range from 0.36 m to 0.75 m in length
Front to back ratio
High (typically 30 dB)
Beamwidth
Broad (up to 60°)
Corner Reflector Antennas
Antenna Siting
When siting antennas, consider the following points:
A site with a clear line of sight to the remote radio is recommended. Pay particular attention to trees, buildings, and other obstructions close to the antenna site.
Example of a clear line-of-sight path
Any large flat areas that reflect RF energy along the link path, for instance, water, could cause multipath fading. If the link path crosses a feature that is likely to cause RF reflections, shield the antenna from the reflected signals by positioning it on the far side of the roof of the equipment shelter or other structure.
Example of a mid-path reflection path
The antenna site should be as far as possible from other potential sources of RF interference such as electrical equipment, power lines and roads. The antenna site should be as close as possible to the equipment shelter.
Wide angle and zoom photographs taken at the proposed antenna location (looking down the proposed path), can be useful when considering the best mounting positions.
Preparation | 55
Factor
Effect
Attenuation
Short cables and larger diameter cables have less attenuation
Cost
Smaller diameter cables are cheaper
Ease of installation
Easier with smaller diameter cables or short cables
Part Number
Part Description
Specification
RFI AVA5 50
Feeder Cable, 7/8", HELIAX, Low loss
7/8" foam dielectric. Standard Jacket Outer conductor corrugated copper, inner
conductor copper-clad aluminum Bending radius of 250 mm min Attenuation of 2.65 dB / 100m @ 520 MHz
RFI LDF4 50A
Feeder cable, 1/2", HELIAX, Loss Loss
1/2" foam dielectric. Standard Jacket Outer conductor corrugated copper, inner
conductor copper-clad aluminum Bending radius of 125 mm min Attenuation of 5.1 dB / 100m @ 520 MHz
RFI CNT 400
Feeder, CNT-400, 10.8mm, Double Shielded Solid Polyethylene
Low loss 0.4’ (10.8 mm) feeder cable UV protected black Polyethylene, bonded
AL tape outer conductor Bending radius of 30 mm min Attenuation of 8.8 dB / 100m @ 450 MHz
Part Number
Part Description
Specification
RFI 8223
Feeder, RG 223 5.4mm d, Double Shielded Solid Polyethylene
Bending radius of 20 mm min Attenuation of 30.5 dB / 100m @ 450 MHz
Coaxial Feeder Cables
To ensure maximum performance, it is recommended that you use good quality low-loss coaxial cable for all feeder runs. When selecting a coaxial cable consider the following:
For installations requiring long feeder cable runs, use the RFI AVA5 50, RFI LDF4 50A or RFI CNT-400 feeder cable or equivalent:
For installations requiring short feeder cable runs, use the RFI 8223 feeder cable or equivalent:
When running cables:
Run coaxial feeder cable from the installation to the antenna, ensuring you leave enough extra cable at each end to allow drip loops to be formed.
Terminate and ground the feeder cables in accordance with the manufacturers’ instructions. Bond the outer conductor of the coaxial feeder cables to the base of the tower mast.
Linking System Plan
All of the above factors combine in any proposed installation to create a Linking System Plan. The Linking System Plan predicts how well the radios will perform after it is installed.
Use the outputs of the Linking System Plan during commissioning to confirm the radios have been installed correctly and that it will provide reliable service.
56 | Preparation
WARNING:
Before connecting power to the radio, ensure that the radio is grounded via the negative terminal of the DC power connection.
Operating temperature
-40 to +70˚ C
Storage temperature
-40 to +80˚ C
Humidity
Maximum 95% non-condensing
WARNING:
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds 50°C, the Aprisa SR+ must be installed within a restricted access location to prevent human contact with the enclosure heat sink.
WARNING:
The Aprisa SR+ can be operated in an environment where the ambient temperature exceeds 50°C. The heat sink will be a hot surface - do not touch.
Site Requirements
Power Supply
Ensure a suitable power supply is available for powering the radio.
The nominal input voltage for a radio is +13.8 VDC (negative earth) with an input voltage range of +10 to +30 VDC. The maximum power input is 35 W.
Equipment Cooling
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds 50°C, the Aprisa SR+ convection air flow over the heat sinks must be considered.
The environmental operating conditions are as follows:
Preparation | 57
WARNING:
Lightning can easily damage electronic equipment. To avoid this risk, install primary lightning protection devices on any interfaces that
are reticulated in the local cable network. You should also install a coaxial surge suppressor on the radio antenna port.
Earthing and Lightning Protection
Feeder Earthing
Earth the antenna tower, feeders and lightning protection devices in accordance with the appropriate local and national standards. The diagram below shows the minimum requirements.
Use grounding kits as specified or supplied by the coaxial cable manufacturer to properly ground or bond the cable outer.
Radio Earthing
The Aprisa SR+ has an earth connection point on the top left and the top right of the enclosure. M4 8mm pan pozi machine screws and M4 lock washers are supplied fitted to the radio. These screws can be used to earth the enclosure to a protection earth.
58 | Installing the Radio
CAUTION:
You must comply with the safety precautions in this manual or on the product itself.
4RF does not assume any liability for failure to comply with these precautions.
WARNING:
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds 50°C, the Aprisa SR+ must be installed within a restricted access location to prevent human contact with the enclosure heatsink.
6. Installing the Radio
Mounting
The Aprisa SR+ has four threaded holes (M4) in the enclosure base and two holes (5.2 mm) through the enclosure for mounting.
Mounting options include:
DIN rail mounting with the Aprisa SR+ DIN Rail Mounting Bracket Rack shelf mounting Wall mounting Outdoor enclosure mounting
Required Tools
No special tools are needed to install the radio.
Installing the Radio | 59
Part Number
Part Description
APSB-MBRK-DIN
4RF SR+ Acc, Mounting, Bracket, DIN Rail
DIN Rail Mounting
The Aprisa SR+ has an optional accessory part to enable the mounting on a standard DIN rail:
The Aprisa SR+ is mounted into the DIN rail mounting bracket using the four M4 threaded holes in the Aprisa SR+ enclosure base. Four 8 mm M4 pan pozi machine screws are supplied with the bracket.
The Aprisa SR+ DIN rail mounting bracket can be mounted in four positions on a horizontal DIN rail:
Vertical Mount (vertical enclosure perpendicular to the mount) Horizontal Mount (horizontal enclosure perpendicular to the mount) Flat Vertical Mount (vertical enclosure parallel to the mount) Flat Horizontal Mount (horizontal enclosure parallel to the mount)
60 | Installing the Radio
Part Number
Part Description
APSB-MR19-X1U
4RF SR+ Acc, Mounting, 19" Rack Mount Shelf, 1U
WARNING:
If the Aprisa SR+ is operated in an environment where the ambient temperature exceeds 50°C, the Aprisa SR+ convection air flow over the heat sinks must be considered.
Rack Shelf Mounting
The Aprisa SR+ can be mounted on a rack mount shelf using the four M4 threaded holes in the Aprisa SR+ enclosure base. The following picture shows Aprisa SR+ mounted on a 1 RU rack mounted shelf.
Installing the Radio | 61
Wall Mounting
The Aprisa SR+ can be mounted on a wall using the two holes through the enclosure (5.2 mm diameter). Typically, M5 screws longer than 35 mm would be used.
62 | Installing the Radio
WARNING:
When the link is operating, there is RF energy radiated from the antenna. Do not stand in front of the antenna while the radio is operating (see the ‘RF Exposure Warning’ on page 3).
Installing the Antenna and Feeder Cable
Carefully mount the antenna following the antenna manufacturers’ instructions. Run feeder cable from the antenna to the radio location.
Lightning protection must be incorporated into the antenna system (see ‘Earthing and Lightning Protection’ on page 57).
Fit the appropriate male or female connector (usually N-type) to the antenna feeder at the antenna end. Carefully follow the connector manufacturers’ instructions.
Securely attach the feeder cable to the mast and cable trays using cable ties or cable hangers. Follow the cable manufacturer’s recommendations about the use of feeder clips, and their recommended spacing.
Connect the antenna and feeder cable. Weatherproof the connection with a boot, tape or other approved method.
The Aprisa SR+ antenna connection is a TNC female connector so the feeder / jumper must be fitted with a TNC male connector.
If a jumper is used between the feeder and the radio, connect a coaxial surge suppressor or similar lightning protector between the feeder and jumper cables (or at the point where the cable enters the equipment shelter). Connect the feeder cable to the antenna port on the radio.
Earth the case of the lightning protector to the site Lightning Protection Earth.
The Aprisa SR+ has an earth connection point on the top left and the top right of the enclosure. M4 8mm pan pozi machine screws and M4 lock washers are supplied fitted to the radio. These screws can be used to earth the enclosure to a protection earth.
Installing the Radio | 63
Part Number
Part Description
APST-CML2-FEM-01
4RF SR+ Spare, Connector, Molex 2 pin, Female, 1 item
Part Number
Part Description
APSB-P230-030-24-TS
4RF SR+ Acc, PSU, 230 VAC, 30W, 24 VDC, -10 to +60C
APSB-P230-048-24-TE
4RF SR+ Acc, PSU, 230 VAC, 48W, 24 VDC, -20 to +75C
APSB-P230-060-24-TS
4RF SR+ Acc, PSU, 230 VAC, 60W, 24 VDC, -10 to +60C
APSB-P48D-050-24-TA
4RF SR+ Acc, PSU, 48 VDC, 50W, 24 VDC, 0 to +50C
Connecting the Power Supply
The nominal input voltage for a radio is +13.8 VDC (negative earth) with an input voltage range of +10 to +30 VDC. The maximum power input is 35 W.
The power connector required is a Molex 2 pin female screw fitting part. This connector is supplied fitted to the radio.
The negative supply of the Aprisa SR+ power connection is internally connected to the Aprisa SR+ enclosure. Power must be supplied from a Negative Earthed power supply.
Wire your power source to power connector and plug the connector into the radio. The connector screws can be fastened to secure the connector.
Spare Molex 2 pin female power connectors can be ordered from 4RF:
Turn your power source on:
All the radio LEDs will flash orange for one second and then the OK, MODE and AUX LEDs will light
green, the TX and RX LEDs will flash red.
The Aprisa SR+ radio is ready to operate The TX and RX LEDs will be green (steady or flashing) when the radio is registered with the
network.
If the LEDs fail to light, carefully check the supply polarity. If the power supply connections have been accidentally reversed, internal fuses will have blown to protect the unit.
Spare fuses are contained within the radio, see ‘Spare Fuses’ on page 64 for instructions on how to locate and replace the fuses.
External Power Supplies
The following external power supplies are available from 4RF as accessories:
64 | Installing the Radio
Spare Fuses
The Aprisa SR+ PBA contains two fuses in the power input with designators F1 and F2. Both the positive and negative power connections are fused. The fuse type is a Littelfuse 0454007 with a rating of 7 A, 75 V, very fast acting.
To replace the fuses:
1. Remove the input power and antenna cable.
2. Unscrew the enclosure securing screws (posi 2).
2. Separate the enclosure halves.
CAUTION: Antistatic precautions must be taken as the internal components are static sensitive.
3. Access the enclosure spare fuses under the plastic cap.
Installing the Radio | 65
Part Number
Part Description
APST-FNAN-454-07-02
4RF SR+ Spare, Fuse, Nano SMF, 454 Series, 7A, 2 items
4. Replace the two fuses.
5. Close the enclosure and tighten the screws.
Note: Is it critical that the screws are re-tightened to 1.2 Nm. The transmitter adjacent channel performance can be degraded if the screws are not tightened correctly.
Additional Spare Fuses
Additional spare fuses can be ordered from 4RF:
Managing the Radio | 67
7. Managing the Radio
SuperVisor
The Aprisa SR+ contains an embedded web server application (SuperVisor) to enable element management with any major web browser (such as Mozilla Firefox or Microsoft® Internet Explorer).
SuperVisor enables operators to configure and manage the Aprisa SR+ base station radio and repeater / remote station radios over the radio link.
The key features of SuperVisor are:
Full element management, configuration and diagnostics Manage the entire network from the Base Station (remote management of elements) Managed network software distribution and upgrades Performance and alarm monitoring of the entire network, including RSSI, alarm states, time-
stamped events, etc.
View and set standard radio configuration parameters including frequencies, transmit power,
channel access, serial, Ethernet port settings
Set and view security parameters User management Operates over a secure HTTPS session on the access connection to the base station
68 | Managing the Radio
Browser
Operating System
Processor
RAM
Internet Explorer 7 (oldest browser supported) IE7 can operate with less but will be
very slow.
MS-Windows XP Service Pack 2
1 GHz processor
1 GB Ram Internet Explorer 9 Does not support config file upload
from PC
MS-Windows Vista Service Pack 2
1 GHz processor
2 GB Ram Internet Explorer 10
(recommended minimum browser)
MS-Windows 7 Service Pack 1
1 GHz processor
2 GB Ram Internet Explorer 11
MS-Windows 8.1
1 GHz processor
2 GB Ram
Mozilla Firefox (MS-Windows)
MS-Windows XP Service Pack 2
1 GHz processor, Pentium 4 and above
1 GB Ram
Mozilla Firefox (Linux)
Gnome desktop 2.18 and above
1 GHz processor, Pentium 4 and above
1 GB Ram
Mozilla Firefox (Apple Mac) (4RF does not support retina displays)
Mac OS X 10.6
1 GHz processor, Pentium 4 and above
1 GB Ram
PC Requirements for SuperVisor
SuperVisor requires the following minimum PC requirements:
Note: 4RF does not support Google Chrome, Opera browser or Apple Safari but when they have been used they have worked correctly.
Managing the Radio | 69
Connecting to SuperVisor
The predominant management connection to the Aprisa SR+ radio is with an Ethernet interface using standard IP networking. There should be only one Ethernet connection from the base station to the management network.
The Aprisa SR+ has a factory default IP address of 169.254.50.10 with a subnet mask of 255.255.0.0. This is an IPv4 Link Local (RFC3927) address which simplifies the connection to a PC.
Each radio in the network must be set up with a unique IP address on the same subnet.
The Aprisa SR+ Protected Station radio A (left radio) has a factory default IP address of 169.254.50.10 and radio B (right radio) has a factory default IP address of 169.254.50.20, both with a subnet mask of
255.255.0.0.
To change the Aprisa SR+ IP address:
1. Set up your PC for a compatible IP address e.g. 169.254.50.1 with a subnet mask of 255.255.0.0.
2. Connect your PC network port to one of the Aprisa SR+ Ethernet ports.
3. Open a browser and enter https://169.254.50.10.
4. Login to the radio with the default Username ‘admin’ and Password ‘admin’.
5. Change the IP address to conform to the network plan in use.
70 | Managing the Radio
Management PC Connection
The active management PC must only have one connection to the network as shown by path . There should not be any alternate path that the active management PC can use via an alternate router or alternate LAN that would allow the management traffic to be looped as shown by path .
When logging into a network, it is important to understand the relationship between the Local Radio and the Remote Radios.
The Local Radio is the radio that your IP network is physically connected to.
If the Local Radio is a base station, SuperVisor manages the base station and all the repeater stations and remote stations in the network.
If the Local Radio is a remote station or repeater station, SuperVisor only manages the remote / repeater station radio logged into.
If the user is at the remote station and connects SuperVisor directly to the remote radio via their computer, all relevant features are still available. This includes the ability to monitor the ‘Last received packet RSSI. If ICMP is enabled on the base station, the user will also be able to ping the base station to confirm the connectivity.
Managing the Radio | 71
PC Settings for SuperVisor
To change the PC IP address:
If your PC has previously been used for other applications, you may need to change the IP address and the subnet mask settings. You will require Administrator rights on your PC to change these.
Windows XP example:
1. Open the ‘Control Panel’.
2. Open ‘Network Connections’ and right click on the ‘Local Area Connection’ and select ‘Properties’.
3. Click on the ‘General’ tab.
4. Click on ‘Internet Protocol (TCP/IP)’ and click on properties.
5. Enter the IP address and the subnet mask (example as shown).
6. Click ‘OK’ then close the Control Panel.
If the radio is on a different subnet from the network the PC is on, set the PC default gateway address to the network gateway address which is the address of the router used to connect the subnets (for details, consult your network administrator).
72 | Managing the Radio
To change the PC connection type:
If your PC has previously been used with Dial-up connections, you may need to change your PC Internet Connection setting to ‘Never dial a connection’.
Windows Internet Explorer 8 example:
1. Open Internet Explorer.
2. Open the menu item Tools > Internet Options and click on the ‘Connections’ tab.
3. Click the ‘Never dial a connection’ option.
Managing the Radio | 73
To change the PC pop-up status:
Some functions within SuperVisor require Pop-ups enabled e.g. saving a MIB
Windows Internet Explorer 8 example:
1. Open Internet Explorer.
2. Open the menu item Tools > Internet Options and click on the ‘Privacy’ tab.
3. Click on ‘Pop-up Blocker Settings’.
4. Set the ‘Address of Web site to allow’ to the radio address or set the ‘Blocking Level’ to ‘Low: Allow Pop-ups from secure sites’ and close the window.
74 | Managing the Radio
To enable JavaScript in the web browser:
Some functions within SuperVisor require JavaScript in the web browser to be enabled.
Windows Internet Explorer 8 example:
1. Open Internet Explorer.
2. Open the menu item Tools > Internet Options and click on the ‘Security’ tab.
3. Click on ‘Local Intranet’.
4. Click on ‘Custom Level’.
5. Scroll down until you see section labeled ‘Scripting’.
6. Under ‘Active Scripting’, select ‘Enable’.
Managing the Radio | 75
Login to SuperVisor
The maximum number of concurrent users that can be logged into a radio is 6.
If SuperVisor is inactive for a period defined by the Inactivity Timeout option (see ‘Maintenance > General’ on page 208), the radio will automatically logout the user.
To login to SuperVisor:
1. Open your web browser and enter the IP address of the radio.
If you haven’t assigned an IP address to the radio, use the factory default IP address of 169.254.50.10 with a subnet mask of 255.255.0.0.
If you don’t know the IP address of the radio, you can determine it using the Command Line Interface (see ‘Command Line Interface’ on page 322).
Note: The Aprisa SR+ has a randomly generated unique self-signed ECC256 security certificate which may cause the browser to prompt a certificate warning. It is safe to ignore the warning and continue. The valid certificate is ‘Issued By: 4RF-APRISA’ which can be viewed in the browser.
2. Login with the Username and Password assigned to you.
If unique usernames and passwords have not yet been configured, use the default username ‘admin’ and password ‘admin’.
Important: After you login for the very first time, it is recommended that you change the default admin password for security reasons (see ‘Changing Passwords’ on page 192).
76 | Managing the Radio
If the login is successful, the opening page will be displayed.
If there is more than one user logged into the same radio, the Multiple Management Sessions popup will show the usernames and IP addresses of the users. This popup message will display until 5 seconds after the cursor is moved. The event log will also record the users logged into the radio or logged out the radio.
Logout of SuperVisor
As the maximum number of concurrent users that can be logged into a radio is 6, not logging out correctly can restrict access to the radio until after the timeout period (30 minutes).
Logging out from a radio will logout all users logged in with the same username.
If the SuperVisor window is closed without logging out, the radio will automatically log the user out after a timeout period of 3 minutes.
To logout of SuperVisor:
Click on the ‘Logout’ button on the Summary Bar.
Managing the Radio | 77
SuperVisor Page Layout
Standard Radio
The following shows the components of the SuperVisor page layout for a standard radio:
SuperVisor Branding Bar
The branding bar at the top of the SuperVisor frame shows the branding of SuperVisor on the left and the product branding on the right.
SuperVisor Alarm Bar
The alarm bar shows the name of the radio terminal that SuperVisor is logged into (the local radio) on the left.
If the local radio is a base station, the page shows the name of the current remote / repeater station (the remote radio) on the right. SuperVisor will manage all the repeater stations and remote stations in the network.
If the local radio is a remote station or repeater station, the page shows the name of the remote / repeater station on the left. The right side of the Alarm Bar will be blank. SuperVisor manages only the remote / repeater station logged into.
The LED alarm indicators reflect the status of the front panel LEDs on the radio.
78 | Managing the Radio
Position
Function
Left
Busy - SuperVisor is busy retrieving data from the radio that SuperVisor is logged into.
Ready - SuperVisor is ready to manage the radio.
Middle
Displays the name of the radio terminal that SuperVisor is currently managing.
Right
The access level logged into SuperVisor. This label also doubles as the SuperVisor logout button.
SuperVisor Summary Bar
The summary bar at the bottom of the page shows:
Managing the Radio | 79
Local Terminal
Network
Network Table
Terminal
Summary
Radio
Exceptions
Serial
View
Ethernet
IP
QoS Security
Maintenance
Events
Software
Monitoring
SuperVisor Menu
The following is a list of SuperVisor top level menu items:
SuperVisor Parameter Settings
Changes to parameters settings have no effect until the ‘Save’ button is clicked.
Click the ‘Save’ button to apply the changes or ‘Cancel’ button to restore the current value.
80 | Managing the Radio
Menu Item
View
Technician
Engineer
Admin
Terminal > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Terminal > Details
Read-Only
Read-Only
Read-Only
Read-Only
Terminal > Device
No Access
Read-Write
Read-Write
Read-Write
Terminal > Date / Time
Read-Only
Read-Only
Read-Only
Read-Only
Terminal > Operating Mode
No Access
Read-Write
Read-Write
Read-Write
Terminal > Sleep Mode
No Access
Read-Write
Read-Write
Read-Write
Radio > Radio Summary
Read-Only
Read-Only
Read-Only
Read-Only
Radio > Channel Summary
Read-Only
Read-Only
Read-Only
Read-Only
Radio > Radio Setup
No Access
Read-Write
Read-Write
Read-Write
Radio > Channel Setup
No Access
Read-Write
Read-Write
Read-Write
Radio > Advanced Setup
No Access
Read-Write
Read-Write
Read-Write
Serial > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Serial > Port Setup
No Access
Read-Write
Read-Write
Read-Write
Ethernet > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Ethernet > Port Setup
No Access
Read-Write
Read-Write
Read-Write
Ethernet > L2 Filtering
No Access
No Access
Read-Write
Read-Write
Ethernet > VLAN
No Access
No Access
Read-Write
Read-Write
IP > IP Summary
Read-Only
Read-Only
Read-Only
Read-Only
IP > Terminal Server Summary
Read-Only
Read-Only
Read-Only
Read-Only
IP > IP Setup
No Access
Read-Write
Read-Write
Read-Write
IP > Terminal Server Setup
No Access
Read-Write
Read-Write
Read-Write
IP > L3 Filtering
No Access
No Access
Read-Write
Read-Write
IP > IP Routes
No Access
No Access
Read-Write
Read-Write
QoS > Summary
Read-Only
Read-Only
Read-Only
Read-Only
QoS > Traffic Priority
No Access
No Access
Read-Write
Read-Write
QoS > Traffic Classification
No Access
No Access
Read-Write
Read-Write
Security > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Security > Setup
No Access
No Access
Read-Write
Read-Write
Security > Users
No Access
No Access
No Access
Read-Write
Security > RADIUS
No Access
No Access
No Access
Read-Write
Security > SNMP
No Access
No Access
No Access
Read-Write
Security > Manager
No Access
No Access
Read-Write
Read-Write
Security > Distribution
No Access
No Access
Read-Write
Read-Write
Maintenance > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Maintenance > General
No Access
Read-Write
Read-Write
Read-Write
Maintenance > Test Mode
No Access
Read-Write
Read-Write
Read-Write
SuperVisor Menu Access
The SuperVisor menu has varying access levels dependent on the login User Privileges.
The following is a list of all possible SuperVisor menu items versus user privileges:
Terminal Settings Menu Items
Managing the Radio | 81
Menu Item
View
Technician
Engineer
Admin
Maintenance > Defaults
No Access
No Access
No Access
Read-Write
Maintenance > Protection
No Access
Read-Write
Read-Write
Read-Write
Maintenance > Licence
No Access
No Access
Read-Write
Read-Write
Maintenance > SCADA
No Access
No Access
Read-Write
Read-Write
Maintenance > MMS
No Access
No Access
Read-Write
Read-Write
Maintenance > Advanced
No Access
No Access
Read-Write
Read-Write
Events > Alarm Summary
Read-Only
Read-Only
Read-Only
Read-Only
Events > Event History
Read-Only
Read-Only
Read-Only
Read-Only
Events > Event Primary History
Read-Only
Read-Only
Read-Only
Read-Only
Events > Event Secondary History
Read-Only
Read-Only
Read-Only
Read-Only
Events > Events Setup
No Access
No Access
Read-Write
Read-Write
Events > Traps Setup
No Access
No Access
Read-Write
Read-Write
Events > Alarm I/O Setup
Read-Only
Read-Only
Read-Write
Read-Write
Events > Event Action Setup
No Access
No Access
Read-Write
Read-Write
Events > Defaults
No Access
No Access
Read-Write
Read-Write
Software > Summary
Read-Only
Read-Only
Read-Only
Read-Only
Software > Setup
No Access
No Access
Read-Write
Read-Write
Software > File Transfer
No Access
No Access
Read-Write
Read-Write
Software > File Primary Transfer
No Access
No Access
Read-Write
Read-Write
Software > File Secondary Transfer
No Access
No Access
Read-Write
Read-Write
Software > Manager
No Access
No Access
Read-Write
Read-Write
Software > Remote Distribution
No Access
No Access
Read-Write
Read-Write
Software > Remote Activation
No Access
No Access
Read-Write
Read-Write
Monitoring > Terminal
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > Serial
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > Ethernet
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > Radio
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > User Selected
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > TCP Connections
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > Routing Table
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > Address Tables
Read-Only
Read-Only
Read-Only
Read-Only
Monitoring > SCADA
Read-Only
Read-Only
Read-Only
Read-Only
Menu Item
View
Technician
Engineer
Admin
Network Table
Read-Only
Read-Only
Read-Only
Read-Only
Summary
Read-Only
Read-Only
Read-Only
Read-Only
Exceptions
Read-Only
Read-Only
Read-Only
Read-Only
View
Read-Only
Read-Only
Read-Only
Read-Only
Network Settings Menu Items
82 | Managing the Radio
SuperVisor Menu Items
As SuperVisor screens are dependent on the Aprisa SR+ configuration deployed, the following section is split into two sections:
Standard Radio Protected Station
All SuperVisor menu item descriptions assume full access ‘Admin’ user privileges:
Managing the Radio | 83
Standard Radio
Terminal
Terminal > Summary
TERMINAL SUMMARY
This page displays the current settings for the Terminal parameters. See ‘Terminal > Details’ on page 86, ‘Terminal > Device’ on page 88 and ‘Terminal > Operating Mode’ on page 94 for setting details.
OPERATING SUMMARY
Operating Mode
This parameter displays the current Operating Mode i.e. if the radio is operating as a base station, repeater station or remote station and the network operating mode of Bridge Mode or Router Mode.
Interface Mode
This parameter displays the Interfaces available for traffic on the radio such as Ethernet and Serial. For Ethernet availability on the radio see ‘Maintenance > Licence’ on page 216.
Modem Mode
This parameter displays the modem mode selected e.g. ETSI / FCC etc.
84 | Managing the Radio
TX Frequency (MHz)
This parameter displays the current Transmit Frequency in MHz.
TX Power (dBm)
This parameter displays the current Transmit Power in dBm.
RX Frequency (MHz)
This parameter displays the current Receive Frequency in MHz.
Channel Size (kHz)
This parameter displays the current Channel Size in kHz.
Network ID
This parameter is the network ID of this base station node and its remote / repeater stations in the network. The entry is four hex chars (not case sensitive).
Base Station ID
This parameter identifies the base station. All radios operating to the base station in the same network must use the same Base Station ID setting.
It is especially important to set different values for each network when two or more networks using the same frequencies are operating with some overlapping coverage. The entry is an integer from 1 to 8.
Node Address
The Node Address of the base station is 0000.
If the Node Address shown is FFFE, this radio is a remote station or repeater station but has not been registered with the base station.
The base station will automatically allocate a Node Address to all its registered repeater station and remote station radios. This address can be between 000B to 01FE.
Network Radius
This parameter displays the maximum number of hops in this network.
Network Repeaters Proximity
This parameter displays the proximity of repeaters in the network.
Managing the Radio | 85
Repeater Network Segment ID
This parameter identifies a repeater network segment and its associated remotes.
In an overlapping coverage network where remote radios can ‘see’ multiple repeaters, it’s especially important to set different values for each repeater network segment and its associated remotes, so the associated remotes will communicate only with the appropriate repeater.
The same setting applies in remote overlapping coverage between a base and a repeater. Different values per base and repeater are required if the requirements are that the remote will be communicating via the repeater and not directly with the base station (or vice-versa), i.e. the repeater and remotes will have the same value but different from the base station value. In this case, if the repeater fails, the remote will re­register to the base station even though they are on different values until the repeater recovers.
The entry is an integer from 0 and 31, where 0 is reserved for broadcast i.e. all radios will ‘see’ this radio traffic even if they are set to different values.
Inband Management
This parameter displays the status of the Inband Management option.
Inband Management Timeout (sec)
This parameter displays the number of seconds that the base station waits for a response from a Remote or repeater station before aborting the Inband Management request.
86 | Managing the Radio
Terminal > Details
MANUFACTURING DETAILS
Radio Serial Number
This parameter displays the Serial Number of the radio (shown on the enclosure label).
Sub-Assembly Serial Number
This parameter displays the Serial Number of the printed circuit board assembly (shown on the PCB label).
Managing the Radio | 87
HW Frequency Band
This parameter displays the hardware radio frequency operating range.
HW Type
This parameter displays the hardware board assembly type.
Radio MAC Address
This parameter displays the MAC address of the radio (the management Ethernet MAC address).
Active Software Version
This parameter displays the version of the software currently operating the radio.
Previous Software Version
This parameter displays the software version that was running on the radio prior to the current software being activated.
A new radio from the factory will display ‘None’ for the Previous SW Version.
88 | Managing the Radio
Terminal > Device
TERMINAL DETAILS
The data entry in the next four fields can be up to 40 characters but cannot contain invalid characters. A popup warns of the invalid characters:
1. Enter the Terminal Name.
2. Enter the Location of the radio.
3. Enter a Contact Name. The default value is ‘4RF Limited’.
4. Enter the Contact Details. The default value is ‘support@4RF.com’.
Managing the Radio | 89
Option
Function
No Repeater
Use when there is no repeater in the network.
Single Repeater Only
Use when there is only one repeater in the network.
Overlapping Coverage
Use for multiple one hop repeaters where the remote station can see more than one repeater or repeaters can see each other.
The communication protocol is slower because each repeater is addressed individually and in-turn.
Separated Coverage
Use for multiple one hop repeaters where the remote station can only see one repeater and the repeaters can’t see each other.
This option provides better network downlink performance than the Overlapping Coverage option.
However, if the repeaters can see each other, the resultant collisions will cause corruptions and dramatically reduce network downlink performance.
RF NETWORK DETAILS
Network ID
This parameter sets the network ID of this base station node and its remote / repeater stations in the network. The entry is four hexadecimal chars (not case sensitive).
The default setting is CAFE.
Base Station ID
This parameter identifies the base station. All radios operating to the base station in the same network must use the same Base Station ID setting.
It is especially important to set different values for each network when two or more networks using the same frequencies are operating with some overlapping coverage. The entry is an integer from 1 to 8.
Network Radius
This parameter sets the maximum number of hops in this network e.g. in a network with base station, repeater and remotes communicating via the repeater, the Network Radius should be set to 2. If the Network Radius is set to 2, a message from that node will only pass 2 hops before it is blocked.
The default setting is 1.
When base station is configured as a ‘Base-Repeater’ (used for remote peer to peer operation via the base station), the use of Network Radius does not change and works the same as if it were a Base Station i.e. the Network Radius is always the number of hops from the base station to the most distant remote in the network.
All stations in the network should be set to the same value.
Network Repeaters Proximity
This parameter is set in base stations, remote stations and repeater stations to indicate the proximity of repeaters in the network when the Network Radius is set to greater than 1.
90 | Managing the Radio
Option
Function
No Repeater
Use when there are no repeaters in the network.
Base Repeater
Use when there is a base-repeater in the network.
Operating Mode
Network Radius
Network Repeaters Proximity Options
Default
Base
1
No Repeater
No Repeater
Base
2
Single Repeater Only, Overlapping Coverage, Separated Coverage
Single Repeater Only Remote
1
No Repeater, Base Repeater
No Repeater
Remote
2
Single Repeater Only, Overlapping Coverage, Separated Coverage
Single Repeater Only Repeater
1
No Repeater, Base Repeater
No Repeater
Repeater
2
Single Repeater Only, Overlapping Coverage, Separated Coverage
Single Repeater Only Base Repeater
1
Base Repeater
Base Repeater
Base Repeater
2
Single Repeater Only, Overlapping Coverage, Separated Coverage
Single Repeater Only
This parameter is set in remote stations to indicate the proximity of repeaters in the network when the Network Radius is set to 1.
The Network Repeaters Proximity options are dependent on the Terminal Operating Mode and the Terminal Network Radius settings:
Repeater Network Segment ID
This parameter identifies a repeater network segment and its associated remotes.
In an overlapping coverage network where remote radios can ‘see’ multiple repeaters, it’s especially
important to set different values for each repeater network segment and its associated remotes, so the associated remotes will communicate only with the appropriate repeater.
The same setting applies in remote overlapping coverage between a base and a repeater. Different values per base and repeater are required if the requirements are that the remote will be communicating via the repeater and not directly with the base station (or vice-versa), i.e. the repeater and remotes will have the same value but different from the base station value. In this case, if the repeater fails, the remote will re­register to the base station even though they are on different values until the repeater recovers.
The entry is an integer from 0 and 31, where 0 is reserved for broadcast i.e. all radios will ‘see’ this radio
traffic even if they are set to different values.
Inband Management
This parameter sets the Inband Management option.
If the Inband Management option is enabled, SuperVisor operating on a base station can also manage all the remote / repeater stations in the network.
Inband Management Timeout (sec)
This parameter sets the Inband Management timeout period. This determines the time the base station waits for a response from a remote or repeater station before aborting the Inband Management request. The default setting is 10 seconds.
Managing the Radio | 91
REGION SETTINGS
Time Format
This parameter sets the time format for all time based results.
The default setting is 24 Hours.
Date Format
This parameter sets the date format for date based results.
The default setting is DD/MM/YYYY.
Measurement System
This parameter sets the unit type for parameters like temperature readings.
The default setting is Metric.
92 | Managing the Radio
Option
Function
Disabled
No SNTP Date and Time Synchronization
SNTP
Date and Time will be synchronized to a SNTP server
Terminal > Date / Time
TERMINAL DATE AND TIME
Sets the Time and Date. This information is controlled from a software clock.
Date and Time Synchronization
This Date and Time Synchronization feature allows a radio to synchronize its date and time from an SNTP server. It would predominantly be used on the base station but could be used on a remote station.
Using the SNTP feature will ensure that all radios in the network has the same date and time required for accurate network diagnostics.
For high availability time/date synchronization, SNTP can be synchronized from two SNTP servers for server backup.
The default setting is Disabled.
The base station periodically sends a broadcast message to the remote stations to synchronize the radio date and time.
Managing the Radio | 93
Auto Synchronization Period (s)
This parameter sets the number of seconds between the end of the last synchronization and the next synchronization attempt. The minimum period is 60 seconds. A period of 0 seconds will disable synchronization attempts.
Time Server 1 Address
This parameter sets the IP address of the first priority SNTP server. If the synchronization is successful to this server, Time Server 2 Address will not be used.
Time Server 2 Address
This parameter sets the IP address of the second priority SNTP server. If the synchronization fails using the SNTP server on Time Server 1 Address, synchronization will be attempted to the SNTP server on this address.
Synchronization Status
This field shows the status of the current synchronization or the result of the last synchronization.
Synchronize Now
This Synchronize Now button provides manual Synchronization.
94 | Managing the Radio
Option
Function
Base
The base station manages all traffic activity between itself, repeaters and remotes. It is the center-point of network where in most cases will be connected to a SCADA master.
Base Repeater
The base-repeater has the same function as the base station (and repeater station), but used when peer to peer connections between remotes is required via the base station.
Base MMS
The Base-MMS has the same function as the base station, but used when Migration Master Station operation is required (see Aprisa SR+ MMS User Manual).
Repeater
The repeater forwards packets coming from base station and other repeaters e.g. in daisy chain LBS mode and /or remote stations.
Remote
The remote in most cases is used as the end-point of the SCADA network connected to an RTU or PLC device for SCADA network control and monitoring.
Point To Point
Configures a full duplex radio for Point-To-Point (PTP) operation. Changing from PMP or PTP or vice versa requires the radio to be ‘restored to factory default settings’ which will clear all previous radio setup and configuration.
See Aprisa SR+ User Manual 1.6.0 PTP for all Point-To-Point setup and configuration.
Terminal > Operating Mode
OPERATING MODES
Terminal Operating Mode
The Terminal Operating Mode can be set to Base, Base Repeater, Repeater, Remote or Point-To-Point station. The default setting is Remote.
Managing the Radio | 95
Option
Function
Bridge
Bridge mode inspects each incoming Ethernet frame source and destination MAC addresses to determine if the frame is forwarded over the radio link or discarded.
Gateway Router
Gateway Router mode inspects each incoming IP source and destination IP addresses to determine if the packet is forwarded over the radio link or discarded. In this mode, all Ethernet interfaces have the same IP address and subnet.
Router
Router mode inspects each incoming IP source and destination IP addresses to determine if the packet is forwarded over the radio link or discarded. In this mode, each Ethernet interface has a different IP address and subnet.
Option
Function
Standard
The radio operates normally.
Disabled
Disables all RF over-the-air communications from the RF port and turns of the transmitter and receiver to save power.
This enables a radio to be used as a Terminal Server without RF.
When the Terminal Operating Mode is changed from PMP to PTP or vice versa, the following popup will warn of the ‘restore to factory default settings’.
SR Compatible
The SR Compatible option enables over-the–air point-to-multipoint interoperation between an Aprisa SR+ network and New Aprisa SR radios. The default setting is unticked.
When the Aprisa SR+ ‘SR Compatible’ option is activated, the Aprisa SR+ locks its modulation to QPSK (as per the New Aprisa SR modulation) and disables functionality which is not available in New Aprisa SR for full compatibility / interoperability operation.
This compatibility option allows the user a smooth migration to Aprisa SR+ when higher speeds of 120, 60 kbit/s (at 25, 12.5 kHz channel sizes), Adaptive Coding and Modulation, full duplex and more features are required.
Note: Any mix between the New Aprisa SR and Aprisa SR+ in the network will force the whole network to work in SR Compatible mode.
Ethernet Operating Mode
The Ethernet Operating Mode defines how Ethernet / IP traffic is processed in the radio. The default setting is Bridge.
RF Operating Mode
The RF Operating Mode defines the operation of the RF over-the-air. The default setting is Standard.
96 | Managing the Radio
Option
Function
None
The SR+ radio is stand-alone radio (not part of an Aprisa SR+ Protected Station).
Redundant (Protected Station)
Set to make this SR+ radio part of an Aprisa SR+ Protected Station. The RF ports and interface ports from two standard Aprisa SR+
radios are switched to the standby radio if there is a failure in the active radio
Monitored Hot Standby (Protected Station)
Set to make this SR+ radio part of an Aprisa SR+ Protected Station. The RF ports and interface ports from two standard Aprisa SR+
radios are switched to the standby radio if there is a failure in the active radio.
The standby radio is monitored to ensure its correct operation should a switch-over be required. See ‘Monitored Alarms’ on page 333 for the list of monitored alarms.
Serial Data Driven Switching
Set to make this SR+ radio part of an Aprisa SR+ Data Driven Protected Station.
TERMINAL PROTECTION
Protection Type
The Protection Type defines if a radio is a stand-alone radio or part of an Aprisa SR+ Protected Station. The default setting is None.
Protection Unit
The Protection Unit defines if this radio is the primary radio or secondary radio in a Protected Station.
One radio in the Protected Station is set to Primary and the other radio to Secondary.
It is recommended that radio A (the left radio) be configured as the Primary and that radio B (the right radio) be configured as the Secondary. The default setting is Primary.
This menu item is only applicable if this radio is to become part of an Aprisa SR+ Protected Station.
PROTECTION MANAGEMENT IP ADDRESS
Local IP Address
The Local IP Address shows the IP address of this radio.
Partner IP Address
The Partner IP Address parameter is used to set the partner IP address if this radio is to become part of a Protected Station.
Managing the Radio | 97
Terminal > Sleep Mode
SLEEP MODE SETTINGS
Sleep mode allows the radio to be put to sleep where it consumes very little power (< 0.5 watts with all Ethernet ports disabled) but allows rapid wake up.
The sleep and wake up is controlled from the serial port DTR inputs or the Alarm Input 1. If sleep mode is enabled for serial port DTR trigger and the customer serial interface is not connected, the radio will sleep.
When radio is in sleep mode, the OK LED pulses once per second at a colour depending on the current state of the OK LED before sleep mode was entered and the other LEDs will be OFF.
Sleep mode will be disabled and sleeping radio will be woken up while a management user is logged into the radio or when a USB CLI cable is inserted in the management port.
Sleep mode will be disabled and sleeping radio will be woken up when an Ethernet cable is inserted into an enabled Ethernet port configured for ‘management and user data’, however 60 seconds after insertion, the radio will be allowed to enter sleep unless the user has logged into SuperVisor.
Pressing the radio ‘test’ button will also wake up a sleeping radio for 5 minutes.
98 | Managing the Radio
Option
Function
Automatic
If this radio is a remote, it uses the setting from the base station. If this radio is the base station, the external triggers control the
radio sleep mode state.
Standard
The external triggers control the radio sleep mode state.
ABB Totalflow ®
The external trigger wakes up the radio for up to the maximum
duration set in the ‘Awake Duration’ or indefinitely if data is sent
to the RTU.
Option
Function
Disabled
The Serial Port DTR has no effect on sleep mode.
Active Low (sleep when input is low)
The Serial Port DTR ON state causes the radio to wake up and the DTR OFF state allows the radio to sleep.
Note: There must be valid RS-232 signals on either the RTS or RX lines for the radio to go to sleep (when DTR is ON).
Option
Function
Disabled
The Alarm Input 1 has no effect on sleep mode.
Active Low(sleep when input is low)
The Alarm Input 1 high (ON) state causes the radio to wake up and the low (OFF) state allows the radio to sleep (see ‘Alarm Inputs’ on page 396 for alarm input specification).
Note: If the alarm input is disconnected (e.g. alarm cable unplugged), the radio will go to sleep.
Sleep Mode
The Sleep Mode parameter sets how sleep mode is controlled. The default setting is Automatic.
Awake Duration for ABB Totalflow ®
The Awake Duration sets the radio awake duration when there is no data being sent to the RTU.
Triggers
The triggers when enabled cause the radio to sleep or wake up. For the radio to sleep, all the enabled triggers must be OFF i.e. if only one enabled trigger goes ON, the radio will wake up.
Serial Port 1 / 2 DTR Trigger
The Serial Port 1 / 2 DTR Trigger controls the radio sleep and wake up. The default setting is Disabled.
The RS-232 specification defines valid control states as:
ON state or 0-state (SPACE) condition = +3 to +12 volts OFF state or 1-state (MARK) condition = -3 to -12 volts
Alarm Input 1 Trigger
The Alarm Input 1 Trigger controls the radio sleep and wake up. The default setting is Disabled.
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