4RF Aprisa SR+ User manual

January 2021
Version 1.11.1b

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Aprisa SR+ User Manual 1.11.1
Copyright
Copyright © 2021 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 ([e-mail]).

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Aprisa SR+ User Manual 1.11.1
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 Radio Equipment Directive
The Aprisa SR+ radio complies with the Radio Equipment Directive (RED) 2014/53/EU European
Telecommunications Standards Institute (ETSI) specifications as follows:
12.5 kHz Channel
25 kHz / 50 kHz Channel
Radio performance
EN 300 113
EN 302 561
EMC
EN 301 489-1 and 5
Environmental
ETS 300 019 Class 3.4, IEEE 1613 Class 2
IEC 61850-3, 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, 50 kHz
10-30 VDC
320-400 MHz
12.5 kHz, 25 kHz, 50 kHz
10-30 VDC
400-470 MHz
12.5 kHz, 25 kHz, 50 kHz
10-30 VDC
450-520 MHz
12.5 kHz, 25 kHz, 50 kHz
10-30 VDC

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Aprisa SR+ User Manual 1.11.1
Short Range Device
When operating as a short range device under EN 300 220-2 V3.2.1 for Ofcom IR2030/2/6 or IR2030/2/7:
1. The user must operate the Aprisa SR+ radio within all the applicable requirements of IR-2030
2. The transmitter power must not be set above +27 dBm
When operating as a short range device, the Aprisa SR+ radio TX power can be adjusted over the range of
+10 dBm to +27 dBm (average power).
To determine the maximum power to be set on the Aprisa SR+ radio, it is necessary to take into account the
feeder loss and antenna gain.
1. ERP limit (specified in dBm, in the case of IR-2030 this is +27 dBm) ERPdBm
2. Peak to average power ratio PxdB
QPSK 3 dB
16QAM 5 dB
64QAM 6 dB
ACM 6 dB
3. Antenna gain specified in dBd (if given in dBi subtract 2.15 dB from the given value) GdBd
4. Feeder coax loss between Aprisa SR+ radio and antenna (specified in dB/m) LdB/m
5. Length of feeder coax between Aprisa SR+ radio and antenna (specified in metres) dm
From the above information, the power setting of the Aprisa SR+ radio (PdBm) can be calculated to ensure
operation within the regulatory requirements using the formula:
PdBm = ERPdBm + (dmx LdB/m ) - GdBd - PxdB

6|
Aprisa SR+ User Manual 1.11.1
Compliance United States of America FCC
The Aprisa SR+ radio is designed to comply with the Federal Communications Commission (FCC)
specifications as follows:
Radio
47CFR part 24, part 27, part 90 and part 101 Private Land
Mobile Radio Services
EMC
47CFR part 15 Radio Frequency Devices (note 1), EN 301
489-1 and 5
Environmental
ETS 300 019 Class 3.4, IEEE 1613 Class 2
IEC 61850-3, Ingress Protection IP51
Safety
UL / EN 60950-1:2006
Class 1 division 2 for hazardous locations
Frequency Band
(note 2)
Channel size
Power
input
Authorization
FCC ID
135-175 MHz
15 kHz, 30 kHz
10-30 VDC
Part 90
UIPSQ135M150
215-240 MHz
12.5 kHz, 15 kHz,
25 kHz, 50 kHz
10-30 VDC
Part 90
UIPSQ215M141
400-470 MHz
12.5 kHz, 25 kHz,
50 kHz
10-30 VDC
Part 90
UIPSQ400M1311
450-520 MHz
12.5 kHz, 25 kHz
10-30 VDC
Part 90
UIPSQ450M140
757-758 MHz and
787-788 MHz (note 3)
12.5 kHz, 25 kHz,
50 kHz, 100 kHz
10-30 VDC
Part 27
UIPSQ757M160
896-902 MHz
12.5 kHz, 25 kHz,
50 kHz, 100 kHz
10-30 VDC
Part 24 /
Part 90 /
Part 101
UIPSQ896M141
928-960 MHz
12.5 kHz, 25 kHz,
50 kHz, 100 kHz
10-30 VDC
Part 24 /
Part 90 /
Part 101
UIPSQ928M141
Note 1: 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.
Note 2: The Frequency Band is not an indication of the exact frequencies approved by FCC.
Note 3: For 700 MHz FCC Part 27 compliance in the Upper A block, the following frequency range restrictions
apply:
Channel Size
Low Band
High Band
12.5 kHz
757.01250 MHz to 757.98750 MHz
787.01250 MHz to 787.98750 MHz
25 kHz
757.01875 MHz to 757.98125 MHz
787.01875 MHz to 787.98125 MHz
50 kHz
757.03750 MHz to 757.96250 MHz
787.03750 MHz to 787.96250 MHz
100 kHz
757.07500 MHz to 757.92500 MHz
787.07500 MHz to 787.92500 MHz

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Aprisa SR+ User Manual 1.11.1
Compliance Canada ISED
The Aprisa SR+ radio is designed to comply with Innovation, Science and Economic Development’ (ISED)
specifications as follows:
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
ETS 300 019 Class 3.4, IEEE 1613 Class 2
IEC 61850-3, Ingress Protection IP51
Safety
UL / EN 60950-1:2006
Class 1 division 2 for hazardous locations
Frequency Band *
Channel size
Power
input
Authorization
ISED
135-175 MHz
15 kHz, 30 kHz
10-30 VDC
RSS-119
6772A-SQ135M150
215-240 MHz
12.5 kHz, 15 kHz,
25 kHz, 50 kHz
10-30 VDC
RSS-119
Pending
400-470 MHz
12.5 kHz, 25 kHz,
50 kHz
10-30 VDC
RSS-119
6772A-SQ400M1311
896-902 MHz
12.5 kHz, 25 kHz,
50 kHz, 100 kHz
10-30 VDC
RSS-119 and
RSS-134
6772A-SQ896M141
928-960 MHz
12.5 kHz, 25 kHz,
50 kHz, 100 kHz
10-30 VDC
RSS-119 and
RSS-134
6772A-SQ928M141
* The Frequency Band is not an indication of the exact frequencies approved by ISED.
Compliance Brazil ANATEL
Este produto será comercializado no Brasil com as configurações abaixo:
Faixa de frequência: 360 a 380 MHz; BW: 12,5 e 25 kHz.
Faixa de frequência: 380 a 400 MHz; BW: 12,5; 25 e 50 kHz.
Faixa de frequência: 406 a 430 e 450 a 470 MHz; BW: 12,5; 25 e 50 kHz.

8|
Aprisa SR+ User Manual 1.11.1
Compliance Hazardous Locations Notice
This product is suitable for use in Class 1, Division 2, Groups A - D hazardous locations or non-hazardous
locations. A Nationally Recognized Testing Laboratory (NRTL) listed power supply is required to power the
equipment.
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 shall use screened cables and connectors to connect to the
serial ports.
Compliance IEC 61850-3
Users requiring compliance to IEC 61850-3 shall use screened cables and connectors to connect to the serial
ports.
Note that during certain supply voltage dips and interruptions, the alarm status may change while the unit
is recovering from such an event.

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Aprisa SR+ User Manual 1.11.1
RF Exposure Warning
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
Note 1: The Peak Envelope Power (PEP) at maximum set power level is +40 dBm.

Contents | 11
Aprisa SR+ User Manual 1.11.1
Contents
1. Getting Started ........................................................................ 17
2. Introduction............................................................................ 19
About This Manual...............................................................................19
What It Covers ............................................................................19
Who Should Read It ......................................................................19
Contact Us.................................................................................19
What’s in the Box ...............................................................................20
3. About the Radio ....................................................................... 21
The 4RF Aprisa SR+ Radio ......................................................................21
Product Features ................................................................................22
Functions ..................................................................................22
Security ....................................................................................24
Performance ..............................................................................25
Usability ...................................................................................25
Product Overview ...............................................................................26
Network Coverage and Capacity .......................................................26
Automatic Registration ..................................................................26
Remote Messaging........................................................................26
Store and Forward Repeater............................................................27
Repeater Packet Forwarding.....................................................27
Repeater Messaging ...............................................................30
Peer To Peer Communication Between Remote Radios......................31
Architecture......................................................................................33
Product Operation........................................................................33
Physical Layer.............................................................................33
Data Link Layer / MAC layer ............................................................34
Channel Access ....................................................................34
Hop by Hop Transmission.........................................................35
Adaptive Coding and Modulation................................................35
System Gain vs FEC Coding .............................................................36
Network Layer ............................................................................37
Packet Routing.....................................................................37
Static IP Router ....................................................................38
Bridge Mode with VLAN Aware ..................................................53
VLAN Bridge Mode Description ..................................................54
Terminal Server Operational in Bridge and Router Modes...................56
Avoiding Narrow Band Radio Traffic Overloading....................................60
Interfaces.........................................................................................62
Antenna Interface ........................................................................62
Ethernet Interface .......................................................................62
RS-232 / RS-485 Interface...............................................................62
USB Interfaces ............................................................................62
Protect Interface .........................................................................62
Alarms Interface..........................................................................62
Front Panel Connections .......................................................................63
LED Display Panel ...............................................................................64
Normal Operation ........................................................................64
Single Radio Software Upgrade.........................................................65

12 | Contents
Aprisa SR+ User Manual 1.11.1
Network Software Upgrade .............................................................65
Test Mode .................................................................................66
Network Management ..........................................................................67
Hardware Alarm Inputs / Outputs ............................................................68
Alarm Input to SNMP Trap...............................................................68
Alarm Input to Alarm Output ...........................................................68
Aprisa SR Alarm Input to Aprisa SR+ Alarm Output ..................................68
4. Implementing the Network.......................................................... 69
Network Topologies.............................................................................69
Point-To-Point Network ..........................................................69
Point-to-Multipoint Network.....................................................69
Point-to-Multipoint with Repeater 1............................................69
Point-to-Multipoint with Repeater 2............................................69
Initial Network Deployment ...................................................................70
Install the Base Station..................................................................70
Installing the Remote radios............................................................70
Install a Repeater Station ...............................................................70
Network Changes................................................................................71
Adding a Repeater Station ..............................................................71
Adding a Remote radio ..................................................................71
5. Preparation ............................................................................ 73
Bench Setup......................................................................................73
Path Planning ....................................................................................74
Antenna Selection and Siting ...........................................................74
Base or Repeater Station.........................................................74
Remote radio.......................................................................75
Antenna Siting .....................................................................76
Coaxial Feeder Cables ...................................................................77
Linking System Plan ......................................................................77
Site Requirements...............................................................................78
Power Supply..............................................................................78
Equipment Cooling .......................................................................78
Earthing and Lightning Protection .....................................................79
Feeder Earthing....................................................................79
Radio Earthing .....................................................................79
6. Installing the Radio ................................................................... 80
Mounting..........................................................................................80
Required Tools............................................................................80
DIN Rail Mounting ........................................................................81
Rack Shelf Mounting .....................................................................82
Wall Mounting.............................................................................83
Installing the Antenna and Feeder Cable ....................................................84
Connecting the Power Supply .................................................................85
External Power Supplies.................................................................85

Contents | 13
Aprisa SR+ User Manual 1.11.1
7. Managing the Radio ................................................................... 87
SuperVisor ........................................................................................87
Connecting to SuperVisor ...............................................................88
Management PC Connection .....................................................89
PC Settings for SuperVisor .......................................................90
Login to SuperVisor................................................................94
Logout of SuperVisor..............................................................97
SuperVisor Page Layout...........................................................98
SuperVisor Extended Network Management (EXM) ......................... 100
SuperVisor Menu ................................................................. 102
SuperVisor Menu Access ........................................................ 103
SuperVisor Menu Items ......................................................... 105
Standard Radio.......................................................................... 106
Terminal .......................................................................... 106
Radio .............................................................................. 127
Serial .............................................................................. 149
Ethernet .......................................................................... 168
IP................................................................................... 178
QoS ................................................................................ 204
Security ........................................................................... 226
Maintenance ..................................................................... 258
Events ............................................................................. 278
Software .......................................................................... 289
Monitoring ........................................................................ 308
Network Status .................................................................. 331
Protected Station ...................................................................... 340
Terminal .......................................................................... 341
Radio .............................................................................. 349
Ethernet .......................................................................... 351
IP................................................................................... 352
Security ........................................................................... 356
Maintenance ..................................................................... 359
Events ............................................................................. 369
Software .......................................................................... 373
Command Line Interface ..................................................................... 390
Connecting to the CLI via the Management Port (MGMT) ................. 390
Connecting to the CLI via Telnet.............................................. 393
Connecting to the CLI via SSH ................................................. 393
CLI Commands .......................................................................... 395
Viewing the CLI Terminal Summary........................................... 397
Changing the Radio IP Address ................................................ 397
8. In-Service Commissioning ..........................................................398
Before You Start............................................................................... 398
What You Will Need.................................................................... 398
Antenna Alignment............................................................................ 399
Aligning the Antennas ................................................................. 399

14 | Contents
Aprisa SR+ User Manual 1.11.1
9. Product Options ......................................................................400
Radio Hardware Types........................................................................ 400
Data Interface Ports .......................................................................... 401
Full Duplex Base Station ..................................................................... 401
Point-To-Point Link ........................................................................... 402
Protected Station ............................................................................. 406
Protected Ports......................................................................... 407
Operation................................................................................ 407
Switch Over ...................................................................... 407
Switching Criteria ............................................................... 408
Monitored Alarms................................................................ 409
Configuration Management .................................................... 410
Hardware Manual Lock ......................................................... 411
Remote Control.................................................................. 411
L2 / L3 Protection Operation .................................................. 412
Hot-Swappable................................................................... 412
Antenna and Duplexer Options ................................................ 413
Installation .............................................................................. 415
Mounting.......................................................................... 415
Cabling............................................................................ 416
Power ............................................................................. 418
Alarms............................................................................. 418
Maintenance ............................................................................ 419
Changing the Protected Station IP Addresses ............................... 419
Creating a Protected Station .................................................. 419
Replacing a Protected Station Faulty Radio ................................. 420
Replacing a Faulty Power Supply.............................................. 421
Replacing a Faulty Protection Switch ........................................ 421
Spares .................................................................................... 422
Data Driven Protected Station............................................................... 423
Operation................................................................................ 423
Over The Air Compatibility .................................................... 423
Switch Over ...................................................................... 424
Configuration Management .................................................... 424
Power ............................................................................. 424
Installation .............................................................................. 425
Mounting.......................................................................... 425
Cabling............................................................................ 425
Duplexer Kits................................................................................... 426
Radio Duplexer Kits .................................................................... 426
Protected Station Duplexer Kits...................................................... 429
Protected Station with Duplexer Kit........................................................ 433
USB RS-232 / RS-485 Serial Port............................................................. 434
USB RS-232 / RS-485 operation....................................................... 434
USB RS-232 Cabling Options........................................................... 435
USB RS-485 Cabling Options........................................................... 435
USB Retention Clip .............................................................. 436

Contents | 15
Aprisa SR+ User Manual 1.11.1
10. Maintenance ..........................................................................437
Spare Fuses..................................................................................... 437
Radio Spare Fuses ...................................................................... 437
Additional Spare Fuses.......................................................... 438
Protected Station Spare Fuses........................................................ 439
No User-Serviceable Components........................................................... 440
Software Upgrade ............................................................................. 441
Network Software Upgrade ........................................................... 441
Non-Protected Network Upgrade Process.................................... 441
Protected Network Upgrade Process ......................................... 443
Single Radio Software Upgrade....................................................... 445
File Transfer Method............................................................ 445
USB Boot Upgrade Method ..................................................... 446
Software Downgrade............................................................ 446
Protected Station Software Upgrade ................................................ 447
Routine Maintenance ......................................................................... 448
Power Supply Check ................................................................... 448
Temperature Test ...................................................................... 448
Connections ............................................................................. 448
Antenna and Feeder System .......................................................... 448
Transmit Power......................................................................... 449
Transmit Frequency.................................................................... 449
Transmit Spectrum..................................................................... 449
11. Interface Connections...............................................................450
RJ45 Connector Pin Assignments............................................................ 450
Ethernet Interface Connections............................................................. 450
RS-232 Serial Interface Connections........................................................ 451
RS-232 Pinout .................................................................... 451
RS-232 Customer Cable Wiring ................................................ 451
RS-232 Bit Oriented Mode Wiring ............................................. 452
RS-232 RJ45 LED Indicators .................................................... 452
Alarm Interface Connections ................................................................ 453
Protection Switch Remote Control Connections .......................................... 453
12. Alarm Types and Sources...........................................................454
Alarm Types.................................................................................... 454
Alarm Events ............................................................................ 455
Informational Events................................................................... 461

16 | Contents
Aprisa SR+ User Manual 1.11.1
13. Specifications .........................................................................463
RF Specifications .............................................................................. 463
Frequency Bands ....................................................................... 463
Channel Sizes ........................................................................... 464
Receiver ................................................................................. 477
Transmitter ............................................................................. 480
Modem ................................................................................... 481
Data Payload Security ................................................................. 481
Duplexer Specifications ............................................................... 482
Interface Specifications ...................................................................... 483
Ethernet Interface ..................................................................... 483
RS-232 Asynchronous Interface....................................................... 484
Hardware Alarms Interface ........................................................... 485
Protection Switch Specifications..................................................... 485
Power Specifications.......................................................................... 486
Power Supply............................................................................ 486
Power Consumption.................................................................... 487
Power Dissipation ...................................................................... 488
General Specifications........................................................................ 489
Environmental .......................................................................... 489
Mechanical .............................................................................. 489
Compliance.............................................................................. 490
14. Product End Of Life..................................................................491
End-of-Life Recycling Programme (WEEE) ................................................. 491
The WEEE Symbol Explained.......................................................... 491
WEEE Must Be Collected Separately ................................................. 491
YOUR ROLE in the Recovery of WEEE................................................ 491
EEE Waste Impacts the Environment and Health .................................. 491
15. Copyrights .............................................................................492

Getting Started | 17
Aprisa SR+ User Manual 1.11.1
1. Getting Started
This section is an overview of the steps required to commission an Aprisa SR+ radio network in the field:
Phase 1:
Pre-installation
1.
Confirm path planning.
Page 74
2.
Ensure that the site preparation is complete:
•Power requirements
•Tower requirements
•Environmental considerations, for example, temperature control
•Mounting space
Page 77
Phase 2:
Installing the radios
1.
Mount the radio.
Page 80
2.
Connect earthing to the radio.
Page 79
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 79
5.
Connect the coaxial jumper cable between the lightning protection and the radio
antenna port.
Page 84
6.
Connect the power to the radio.
Page 85

18 | Getting Started
Aprisa SR+ User Manual 1.11.1
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 390.
Page 390
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 90
4.
Open a web browser and login to the radio.
Page 94
5.
Set or confirm the RF characteristics:
•TX and RX frequencies
•TX output power
Page 129
6.
Compare the actual RSSI to the expected RSSI value (from your path planning).
Page 66
7.
Align the antennas.
Page 399
8.
Confirm that the radio is operating correctly; the OK, MODE and AUX LEDs are
green.

Introduction | 19
Aprisa SR+ User Manual 1.11.1
2. Introduction
About This Manual
What It Covers
This user manual describes how to install and configure an Aprisa SR+ digital radio network.
It specifically documents an Aprisa SR+ radio running system software version 1.11.1 .
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.
The 4RF New Zealand head office is:
4RF Limited
26 Glover Street, Ngauranga
PO Box 13-506
Wellington 6032
New Zealand
E-mail
[email protected]
Website
www.4rf.com
Telephone
[phone]
Facsimile
[phone]
The 4RF United States sales office is:
4RF USA, Inc.
2301 Blake Street
Denver
Colorado 80205
United States of America
E-mail
[email protected]
Website
www.4rf.com
Telephone
[phone]

20 | Introduction
Aprisa SR+ User Manual 1.11.1
What’s in the Box
Inside the box you will find:
•One Aprisa SR+ radio fitted with a power connector.
•One Aprisa SR+ Quick Start Guide: