DIGITAL IP RADIOS WITH INDUSTRY-LEADING
PERFORMANCE AND SECURITY

​Aprisa SR+
Aprisa SRi

APRISA SR+

How do you monitor and control your critical infrastructure?
The Aprisa SR+ provides narrow band point-to-multipoint radio communications, designed and optimised for SCADA and telemetry applications. The Aprisa SR+ provides industry leading capacity of up to 120 kbit/s for more data intensive applications, with four build-configurable ports for advanced flexibility.

Aprisa SR+ Benefits:
  • 360 degree security protection, including AES 256 encryption, data authentication and micro-firewall
  • Easy configuration and management, with laptop-free install and over the air software upgrades
  • Standards-based with SNMP for integration with network management systems
  • Reliable and robust for real world utility applications, and easily integrated with current SCADA infrastructure
  • Advanced, efficient channel access and traffic management, optimised for SCADA applications

APRISA SR+

APRISA SRi
Aprisa SR+ Applications and Benefits:
There are applications for the Aprisa SR+ throughout electricity, renewable and the smart grid, including:
  • Smart grid: concentrator communications and GPRS replacement
  • AMI / AMR: high density data concentrator backhaul
  • Renewables: wind farm, tidal, hydro automation
  • Measurement, control and protection in MV / HV distribution / transmission
  • Co-generation and community energy storage monitoring and control in distributed storage and generation
  • Fibre substitution in substation and feeder automation upgrades
  • Secure
  • 4RF reliability
Aprisa SRi Appliations and Benefits:
Unlicensed SCADA radio reinvented – delivering a new standard of resilience and security to meet tough critical infrastructure requirements.
  • More reliable performance needed in unlicensed noisy environment and supporting growing demands for data
  • Interference immunity
  • Substation-hardened 
  • Advanced IP networking
  • Demand for better security
  • Network management
  • Medium range
  • Efficient unlicensed channel usage
  • Full SNMP NMS integration 
  • Secure
  • 4RF reliability
  • Easy installation and maintenance

TELL ME MORE: WHAT IS SMART?

Smart Radio: Superior radio design for maximum performance
​Smart Radio: superior radio design for maximum performance
Smart Management: visual diagnostics and intuitive network management
​Smart Security: superior radio design for maximum performance
Smart Interfaces: a wide range of traffic and management interfaces
Smart Operation: optimise configuration for your network topology
Smart Design: all packed into a reliable and robust design unit

SMART RADIO

4RF has a long history of developing high performance radios, and the Aprisa SR+ builds on this same engineering excellence.
The Aprisa SR+ is distance-engineered and optimised for SCADA and telemetry applications, providing reliable, robust performance however demanding the conditions: what we call ‘real world radio’. RF performance is unbeatable, with attention paid to every element of the design: transmitter, receiver, modulation and efficiency.

The receiver maintains exceptional low noise operation via excellent sensitivity for greater distance and high selectivity and intermodulation suppression for superior protection from interference.

​This performance is complemented by fast switching circuitry and high transmit power ensuring long distance operation with exceptional system reliability and availability.
Aprisa SR+ Transmitter:
  • Power output:
    64 QAM 0.01 – 2.5 W

    (10 – 34 dBm, in 1 dB steps)

    16 QAM 0.01 – 3.2 W
    
(10 – 35 dBm, in 1 dB steps)
    
QPSK 0.01 – 5.0 W
    
(10 – 37 dBm, in 1 dB steps)
    
4-CPFSK 0.01 – 10.0 W
    
(10 – 40 dBm, in 1 dB steps)
  • Adjacent channel power:    < –60 dBC
  • Transient adjacent channel power:    < –60 dBC
  • Spurious emissions:    < –37 dBm
  • Attack time:    < 1.5 ms
  • Release time:    < 0.5 ms
  • Data turnaround time:    < 2 ms
Aprisa SR+ Receiver:
  • Sensitivity (BER < 10-2) max coded QPSK:
    –120 dBm (12.5 kHz)

    ​–120 dBm (25 kHz)
  • Sensitivity (BER < 10-2) max coded 64 QAM:
    –109 dBm (12.5 kHz)

    –106 dBm (25 kHz)
  • Adjacent channel selectivity:   
    > 60 dB (12.5 kHz)

    > 66 dB (25 kHz)
  • Co-channel rejection max coded QPSK:    > –5 dB
  • Co-channel rejection max coded 64 QAM:    > -20 dB
  • Intermodulation response rejection:    > 70 dB
  • Blocking or desensitisation:    > 84 dB
  • Spurious response rejection:    > 75 dB

SMART MANAGEMENT
Visual Diagnostics and Intuitive Network Management

It doesn’t matter how good your radios are if you have no visibility of their performance, or if it is difficult to configure and manage your radios or your network.
The Aprisa SR+ incorporates a number of simple, yet smart, features to make it easy to manage your SCADA network, both at an individual radio level and at a complete network level. Detailed network monitoring means that faulty or failed RTUs can be easily identified.

Multiple LEDs provide easy visibility of status and alarm information, together with a test button that enables the display of key parameters such as RSSI. The Aprisa SR+ has LED indicators on each of the serial and Ethernet data ports which indicate the presence of data on the port.

The SuperVisor application supports local element management via IP and remote element management over the air from a PC connected to the Aprisa SR base station. SNMP support allows network-wide monitoring and control via a third party network management system such as Castlerock SNMPc. With the Aprisa MIBs configurations compiled into SNMPc, the management system can be used to visualise, monitor and manage the Aprisa SR network, as well as gathering and displaying performance statistics.
Smart Management: Smart SCADA.
  • Multiple LEDs and onsite test functionality
  • Local, remote and network management
Get smart and contact us to find out more about how you could benefit from the Aprisa SR+.

SMART SECURITY
Defense in Depth

Security is more than just encryption. It’s about ensuring that the entire SCADA network is protected and that all vulnerabilities are secured against attack, whether accidental or malicious.
The Aprisa SR family incorporates an in depth approach to security, what we call a 360 degree approach. This takes into account security fundamentals, types and sources of attack, and protecting all data and management interfaces, as well as incorporating industry standards and recommendations. This approach protects against passive eavesdropping, active denial of service, ‘man-in-the-middle’ attacks and attacks at a management level.

​The Aprisa SR and Aprisa SR+ security includes all of the following:
  • AES-256 encryption as standard: ensuring the confidentiality of all transmitted information
  • Proprietary wireless protocol: based on 802.15.4 MAC and a proprietary PHY. This combines a standardised and extensively tested protocol with selected proprietary features to avoid over the air interception and manipulation of data
  • Segregated traffic flow: allowing operators to isolate radio nodes and SCADA equipment
  • Licensed radio spectrum: ensuring that you are the only authorised user of the spectrum, avoiding interference from others using the same band
  • Management interface protection: including authentication, secure web interface, encrypted firmware upgrades and ICMP and UDP/TCP port blocking
  • Address filtering: to ensure that the traffic across the network originates from an authorised source and only packets that have the correct address details are passed on
  • Data authentication: using CCM-based authenticated encryption algorithm, to protect integrity of information and mitigate replay attack and ‘man-in-the-middle’ attacks
  • Over the air rekeying (OTAR): Enhanced security key management via over-the-air re-keying (OTAR) enables users to change the network encryption keys at regular intervals to improve network security. Keys can be distributed securely throughout the network to outstations without the need to visit individual sites. Encryption key distribution is managed through the web based SuperVisor application
The security of the Aprisa SR family extends to the fact that it is a privately owned and controlled network, avoiding dependence on any third party operators. It is your critical infrastructure: why trust it to anyone else?

SMART INTERFACES
Wide Range of Traffic and Management Interfaces

The Aprisa SR family is designed to provide a future-proof SCADA radio solution, as well as making network management as easy as possible. With support for both serial and IP traffic, you can migrate to IP at your own pace.
Incorporating a comprehensive range of interfaces to provide maximum flexibility for communication, configuration and control, you can choose the Aprisa SR product that best meets the needs of your network and applications.

Multiple serial and Ethernet ports enable the simultaneous connection of multiple RTUs and enable management of the radio over-the-air, using the web based GUI, without interrupting user data. Local firmware upgrades and radio configuration can be carried out securely using a USB flash drive.

​A dedicated USB management port allows the management and configuration of the radio using a Command Line Interface (CLI).
Aprisa SR Interfaces:
  • Two Ethernet ports
  • One serial port
  • One Type A USB host port
  • One Type B micro USB management port
​Aprisa SR+ Interfaces:
  • 4 build-configurable ports (2/2, 3/1, 4/0 Ethernet/serial)
  • One Type A USB host port
  • One Type B micro USB management port
Smart Interfaces: Smart SCADA.

Get smart and contact us to find out more about how you could benefit from the Aprisa SR and Aprisa SR+

SMART OPERATION
Your Network. You’re in Charge

All networks are different. The Aprisa SR family takes account of this by enabling you to configure a number of detailed parameters to optimise your network, dependent on your network topology.
As well as the general network configurability supported by SuperVisor, you can configure a number of parameters that directly impact network efficiency, including:
  • Channel access mode, Access Request or Listen Before Send
  • Ethernet and serial port priority settings
  • Network filtering and security settings
  • Initial set up specifications pre-configured
  • Flexible, simple mounting options
  • Use of lightweight antennas
  • Local LED display to aid antenna alignment
  • Automatic remote station registration
  • Intuitive ‘point and click’ management software
  • Multiple mechanisms for radio management
  • Easy software upgrade process
  • Integration with third party network managers

​The smart operation of the Aprisa SR family extends to its protection options. The Aprisa SR protected station consists of two standard radios and a protection switch, ideal where base station redundancy is needed.


​​Network planning is another part of the smart operation the Aprisa SR family brings. From optimum site position to choosing antennas, to selecting where repeaters should be used, 4RF can help you plan your optimised, high performing radio network.

A SCADA communications network you can optimise for your individual circumstances?

Smart.

SMART DESIGN
​Reliable and Robust

When your network is mission-critical, your radios have to keep up.
The Aprisa SR and Aprisa SR+ are designed with superior attention to detail and quality, for consistent high performance, no matter how demanding your requirements.

There is no need for manual component tuning, there are no moving parts, and the Aprisa SR family maintains its high power output over a wide temperature range.

Thermal management is a crucial aspect of reliability engineering, and the Aprisa SR and Aprisa SR+ are able to operate at high temperatures through the use of high efficiency amplifier technology and extensive integrated passive heat sinking.

Smart Design: Smart SCADA.
  • Temperature range -40 to +70 º C
  • Compact form factor
  • Rugged die cast aluminium chassis
  • Easy to mount using DIN rail, 19 inch rack or direct wall mount

​Get smart and contact us to find out more about how you could benefit from the Aprisa SR and Aprisa SR+

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