4RF Aprisa SR+ User Manual

Managing the Radio | 299

Protected Station: Maintenance > Licence

This page provides the management and control of the Protected Station Maintenance Licence settings.

PRIMARY / SECONDARY LICENCE

See ‘Maintenance > Licence’ on page 216 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

300 | Managing the Radio

Protected Station: Maintenance > Advanced

This page provides the management and control of the Protected Station Maintenance Advanced settings.

NETWORK

See ‘Maintenance > Advanced’ on page 217 for parameter details.

RF Interface MAC address

This parameter is only applicable when the radio is part of a Protected Station.

This RF Interface MAC address is used to define the MAC address of the Protection Switch. This address is entered in the factory. Both Protected Station radios read and use this MAC address.

This MAC address entry will only be used by the software if it detects that the factory MAC address set in the internal EPROM of the protected switch is corrupted for some reason, otherwise the software will ignore the MAC address entered by the user.

The RF interface MAC address is used for registration process only. For example, in a remote Protected Station, both radios share the same RF MAC address and a single entry of the remote Protected Station will be presented in network table (Network Status > Network Table).

The Protection Switch RF Interface MAC address is shown on the Protection Switch label:

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 301

PRIMARY / SECONDARY CONFIGURATION

See ‘Maintenance > Advanced’ on page 217 for parameter details.

PRIMARY / SECONDARY MAINTENANCE FILES

See ‘Maintenance > Advanced’ on page 217 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

302 | Managing the Radio

Events

The Events menu contains the setup and management of the alarms, alarm events and traps.

Protected Station: Events > Alarm Summary

There are two types of events that can be generated on the Aprisa SR+ radio. These are:

1. Alarm Events

Alarm Events are generated to indicate a problem on the radio.

2. Informational Events

Informational Events are generated to provide information on key activities that are occurring on the radio. These events do not indicate an alarm on the radio and are used to provide information only.

See ‘Alarm Types and Sources’ on page 368 for a complete list of events.

PRIMARY / SECONDARY ALARM SUMMARY

See ‘Events > Alarm Summary’ on page 222 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 303

Protected Station: Events > Primary History

PRIMARY EVENT HISTORY

See ‘Events > Event History’ on page 223 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

304 | Managing the Radio

Protected Station: Events > Secondary History

SECONDARY EVENT HISTORY

See ‘Events > Event History’ on page 223 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 305

Software

The Software menu contains the setup and management of the system software including network software distribution and activation on a protected station.

Single Radio Software Upgrade

The radio software can be upgraded on a single radio single Aprisa SR+ radio (see ‘Single Radio Software Upgrade’ on page 362). This process would only be used if the radio was a replacement or a new station in an existing network.

Network Software Upgrade

The radio software can be upgraded on an entire Aprisa SR+ radio network remotely over the radio link (see ‘Network Software Upgrade’ on page 358). This process involves the following steps:

1.Transfer the new software to base station primary radio with ‘Protected Station: Software > Primary File Transfer’.

2.File Transfer the new software to base station secondary radio with ‘Protected Station: Software > Secondary File Transfer’.

3.Using the Software Manual Lock, manually lock all protected remotes to the currently active radio (this is necessary to prevent automatic switching during the distribution and activation process).

4.Distribute the new software to all remote stations with ‘Protected Station: Software > Remote Distribution’. Note: The software pack in the base station active radio is used for distribution.

5.Activate of the new software on remote stations with ‘Protected Station: Software > Remote Activation’.

6.Finally, activate the new software on the base station primary and secondary radios. Note: activating the software will reboot the radio which will reset the Software Manual Lock to Automatic.

Aprisa SR+ User Manual 1.6.0 PO

306 | Managing the Radio

Protected Station: Software > Summary

This page provides a summary of the software versions installed on the radio, the setup options and the status of the File Transfers.

PRIMARY / SECONDARY SOFTWARE VERSIONS

See ‘Protected Station: Software > Primary File Transfer’ and ‘Protected Station: Software > Secondary File Transfer’ for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 307

Protected Station: Software > Primary File Transfer

This page provides the mechanism to transfer new software from a file source into the primary radio.

SETUP FILE TRANSFER FOR PRIMARY UNIT

Direction

This parameter sets the direction of file transfer. In this software version, the only choice is ‘To Primary Radio’.

Method

This parameter sets the method of file transfer.

Option	Function
Primary USB Transfer	Transfers the software from the USB flash drive to the primary
	radio.
FTP	Transfers the software from an FTP server to the primary radio.
HTTP	Transfers the software from a PC to the primary radio.
Transfer from Secondary	Transfers the software from the secondary radio to the primary
Unit	radio.

PRIMARY FILE TRANSFER STATUS

See ‘Software > File Transfer’ on page 238 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

308 | Managing the Radio

To transfer software into the Aprisa SR+ primary radio:

Primary USB Transfer Method

1.Unzip the software release files in to the root directory of a USB flash drive.

2.Insert the USB flash drive into the primary radio host port .

3.Click on ‘Start Transfer’.

4.When the transfer is completed, remove the USB flash drive from the primary radio host port. If the SuperVisor ‘USB Boot Upgrade’ setting is set to ‘Disabled’ (see ‘USB Boot Upgrade’ on page 237), the

USB flash drive doesn’t need to be removed as the radio won’t try to load from it.

5.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

FTP Method

1.Unzip the software release files in to a temporary directory.

2.Open the FTP server and point it to the temporary directory.

3.Enter the FTP server IP address, Username and password into SuperVisor.

4.Click on ‘Start Transfer’.

5.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 309

Transfer from Secondary Unit

1.Select Transfer from Secondary Unit.

2.Click on ‘Start Transfer’.

3.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

If the file transfer fails, check the Event History page (see ‘Protected Station: Events > Secondary History’ on page 304) for more details of the transfer.

Aprisa SR+ User Manual 1.6.0 PO

310 | Managing the Radio

Protected Station: Software > Secondary File Transfer

This page provides the mechanism to transfer new software from a file source into the secondary radio.

SETUP FILE TRANSFER FOR SECONDARY UNIT

Direction

This parameter sets the direction of file transfer. In this software version, the only choice is ‘To Secondary Radio’.

Method

This parameter sets the method of file transfer.

Option	Function
Secondary USB Transfer	Transfers the software from the USB flash drive to the secondary
	radio.
FTP	Transfers the software from an FTP server to the secondary radio.
HTTP	Transfers the software from a PC to the secondary radio.
Transfer from Primary	Transfers the software from the primary radio to the secondary
Unit	radio.

SECONDARY FILE TRANSFER STATUS

See ‘Software > File Transfer’ on page 238 for parameter details.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 311

To transfer software into the Aprisa SR+ secondary radio:

Secondary USB Transfer Method

1.Unzip the software release files in to the root directory of a USB flash drive.

2.Insert the USB flash drive into the secondary radio host port .

3.Click on ‘Start Transfer’.

4.When the transfer is completed, remove the USB flash drive from the secondary radio host port. If the SuperVisor ‘USB Boot Upgrade’ setting is set to ‘Disabled’ (see ‘USB Boot Upgrade’ on page 237), the

USB flash drive doesn’t need to be removed as the radio won’t try to load from it.

5.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

FTP Method

1.Unzip the software release files in to a temporary directory.

2.Open the FTP server and point it to the temporary directory.

3.Enter the FTP server IP address, Username and password into SuperVisor.

3. Click on ‘Start Transfer’.

4.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

Aprisa SR+ User Manual 1.6.0 PO

312 | Managing the Radio

Transfer from Primary Unit

1.Select Transfer from Primary Unit.

2.Click on ‘Start Transfer’.

3.Go to ‘Protected Station: Software > Manager’ on page 313 to activate the Software Pack. The radio will reboot automatically.

If the file transfer fails, check the Event History page (see ‘Protected Station: Events > Primary History’ on page 303) for more details of the transfer.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 313

Protected Station: Software > Manager

This page summaries and manages the software versions available in the primary and secondary radios.

The manager is predominantly used to activate new software on single radios. Network activation is performed with ‘Protected Station: Software > Remote Activation’.

Both the previous software (if available) and Software Pack versions can be activated on each radio from this page.

PRIMARY / SECONDARY CURRENT SOFTWARE

Version

This parameter displays the software version running on the radio.

PRIMARY / SECONDARY PREVIOUS SOFTWARE

Version

This parameter displays the software version that was running on the radio prior to the current software being activated.

Status

This parameter displays the status of the software version running on the radio.

Option	Function
Active	The software is operating the radio.
Inactive	The software is not operating the radio but could be re-activated if
	required.

Aprisa SR+ User Manual 1.6.0 PO

314 | Managing the Radio

PRIMARY / SECONDARY SOFTWARE PACK

Version

This parameter displays the software pack version available for distribution on base station and activate on all stations.

Status

This parameter displays the status of the software pack version.

Option	Function
Available	On the base station, the software pack is available for distribution.
	On all stations, the software pack is available for activation.
Activating	The software pack is activating in the radio.
Unavailable	There is no software pack loaded into the radio.

Activate

See ‘Software > Manager’ on page 242 for the activation options.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 315

Protected Station: Software > Remote Distribution

This page provides the mechanism to distribute software to all remote protected stations into the Aprisa SR+ network (network) and then activate it.

The Software Pack loaded into the base station with the file transfer process (see ‘Protected Station: Software > Primary File Transfer’ on page 307) is distributed via the radio link to all remote stations from the active radio.

The distribution process is monitored from this page.

When all remote stations receive the Software Pack version, the software can be remotely activated on all remote stations.

This page is only available when the radio is configured as a Base Station.

REMOTE SOFTWARE DISTRIBUTION

Software Pack Version

This parameter displays the software pack version available for distribution on base station and activate on all stations.

Status

This parameter displays the status of the software pack version.

If a Software Pack is not available, the status will display ‘Unavailable’ and the software distribution mechanism will not work.

Aprisa SR+ User Manual 1.6.0 PO

316 | Managing the Radio

Start Transfer

This parameter when activated distributes (broadcasts) the new Software Pack to all remote stations in the network.

Note: The distribution of software to remote stations does not stop customer traffic from being transferred. However, due to the volume of traffic, the software distribution process may affect customer traffic.

Software distribution traffic is classified as ‘management traffic’ but does not use the Ethernet management priority setting. Software distribution traffic priority has a fixed priority setting of ‘very low’.

To distribute software to remote stations:

This process assumes that a Software Pack has been loaded into the base station with the file transfer process (see ‘Protected Station: Software > Primary File Transfer’ on page 307).

1.To ensure that the Network Table is up to date, it is recommended running the node discover function (see ‘Discover Nodes’ on page 218).

2.Click on ‘Start Transfer’.

Note: This process could take anywhere between 40 minutes and several hours depending on channel size, Ethernet Management Priority setting and the amount of customer traffic on the network.

Result	Function
Over the Air Transfer	The percentage of the software pack that has been broadcast to
Progress	the remote radios.
Poll Remote Locations	X is the number of radios polled to determine the number of
	standby radios.
	Y is the number of remote radios registered with the base station.
Transfer software to	X is the number of standby radios with the new software version.
remote standby radios	Y is the number of standby radios requiring the new software
	version.

3. When the distribution is completed, activate the software with the Remote Software Activation.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 317

Pause Transfer

This parameter when activated, pauses the Over the Air Transfer Process and shows the distribution status. The distribution process will continue from where it was paused with Resume Transfer.

Cancel Transfer

This parameter when activated, cancels the Over the Air Transfer Process immediately.

During the distribution process, it is possible to navigate away from this page and come back to it to check progress. The SuperVisor session will not timeout.

Aprisa SR+ User Manual 1.6.0 PO

318 | Managing the Radio

Protected Station: Software > Remote Activation

This page provides the mechanism to activate software on all remote protected stations.

The Software Pack has been loaded into the base station with the file transfer process (see ‘Protected Station: Software > Primary File Transfer’ on page 307) and distributed via the radio link to all remote stations from the active radio.

When all remote stations receive the Software Pack version, the software can be remotely activated on all remote stations.

The activation process is monitored by this page.

This page is only available when the radio is configured as a Base Station.

REMOTE SOFTWARE ACTIVATION

When the software pack version has been distributed to all the remote stations, the software is then activated in all the remote stations with this command. If successful, then activate the software pack in the base station to complete the network upgrade.

Version

This parameter displays the software version for activation. The default version is the software pack version but any valid software version can be entered in the format ‘n.n.n’.

Activation Type

This parameter sets when the software pack activation will occur.

	Option	Function
	Now	Activates the software pack now.
	Date & Time	Activates the software pack at the Date & Time set in the following
		parameter.
		Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 319

Activation Date & Time

This parameter sets the Date & Time when the software pack activation will occur.

This setting can be any future date and 24 hour time.

Skip Confirmation Step

This parameter when enabled skips the confirmation step during the activation process.

Normally, the confirmation step will require use intervention to accept the confirmation which will halt the activation process. Skipping the confirmation will enable the activation process to continue without use intervention.

To activate software in remote stations:

This process assumes that a Software Pack has been loaded into the base station with the file transfer process (see ‘Software > File Transfer’ on page 238) and that distributed to all remote radios in the network.

Note: Do not navigate SuperVisor away from this page during the activation process (SuperVisor can lose PC focus).

1.Enter the Software Pack version (if different from displayed version).

2.See ‘Software > Manager’ on page 242 for the activation options.

Aprisa SR+ User Manual 1.6.0 PO

320 | Managing the Radio

The remote stations will be polled to determine which radios require activation:

Result	Function (X of Y)
Remote Radios Polled for	X is the number of radios polled to determine the number of
Partners	protected stations in the network.
	Y is the number of remote radios registered with the base station.
Remote Radios Polled for	X is the number of radios polled to determine the number of radios
New Version	that contain the new software version.
	Y is the number of remote radios registered with the base station.
Remote Radios Activated	X is the number of radios that contain the new software version
	and have been activated.
	Y is the number of radios that contain the new software version
	and can be activated.
Remote Radios On New	X is the number of radios that has been successfully activated and
Version	now running the new version of software.
	Y is the number of radios that the activation command was
	executed on.

When the activation is ready to start:

3. Click on ‘OK’ to start the activation process or Cancel to quit.

The page will display the progress of the activation.

The example shows that during the activation process there were exceptions that may need to be investigated.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 321

When all the remote radios have been activated, the base station radio must now be activated with (see ‘Software > Manager’ on page 242).

4. Click on ‘OK’ to start the activation on the base station.

Aprisa SR+ User Manual 1.6.0 PO

322 | Managing the Radio

Command Line Interface

The Aprisa SR+ has a Command Line Interface (CLI) which provides basic product setup and configuration. This can be useful if you need to confirm the radio’s IP address, for example.

You can password-protect the Command Line Interface to prevent unauthorized users from modifying radio settings.

This interface can be accessed via an Ethernet Port (RJ45), the Management Port (USB micro type B) or the USB host port with a USB converter to RS-232 convertor.

Connecting to the Management Port

A USB Cable USB A to USB micro B, 1m is provided with each radio.

1.Connect the USB A to your computer USB port and the USB micro B to the management port of the Aprisa SR+ (MGMT).

2.Unzip the file ‘USB Serial Driver CP210x_VCP_Windows.zip’ to a temporary location and install the appropriate driver on your computer. This file is on the Information and setup CD supplied with the radio.

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 323

3.Go to your computer device manager (Win 7: Control Panel > Administrative Tools > Computer Management > Device Manager)

4.Click on ‘Ports (COM & LPT)’

5.Make a note of the COM port which has been allocated to the ‘Silicon Labs CP210x USB to UART Bridge’ (COM3 in the example below)

6. Open HyperTerminal or an alternative type of terminal Emulator program e.g. TeraTerm or Putty.

HyperTerminal Example

7. Enter a name for the connection (Aprisa SR+ CLI for example) and click OK.

Aprisa SR+ User Manual 1.6.0 PO

324 | Managing the Radio

8. Select the COM port from the Connect Using drop-down box that was allocated to the UART USB.

9. Set the COM port settings as follows:

10.Click OK. The HyperTerminal window will open.

11.Press the Enter key to initiate the session.

12.Login to the Aprisa SR+ CLI with a default Username ‘admin’ and Password ‘admin’.

The Aprisa SR+ CLI menu is shown:

Aprisa SR+ User Manual 1.6.0 PO

Managing the Radio | 325

CLI Commands

To enter a CLI command:

1.Type the first few characters of the command and hit Tab. This auto completes the command.

2.Enter the command string and enter.

Note: All CLI commands are case sensitive.

The top level CLI command list is displayed by typing a ? at the command prompt. The following is a list of the top level CLI commands and their usage:

	CLI Command	Usage
	adduser	adduser [-g <password aging>] [-a <account aging>] [-i <role>] <userName> <userPassword>
	browser	browser <state(STR)>
	cd	cd <changeMode(STR)>
	clear	Clears the screen
		config
		userdefault
	config	save
		restore
		factorydefault
		restore
		set subsystem param(INT) level param(INT)
		get
		clear subsystem param(INT) level param(INT)
	debug	help
		log
		dump
		clear
	deleteuser	deleteuser <userName>
	editpasswd	editpasswd <oldpassword> <newpassword>
	edituser	edituser [-p <password>] [-g <password aging>] [-a <account aging>] [-i]
	get	get [-m <mib name>] [-n <module name>] <attribute name> [indexes]
	list	list <tablename>
	logout	Logs out from the CLI
	ls	Displays the next level menu items
	pwd	Displays the current working directory
	reboot	Reboots the radio
		stats
	rohc	show
		clear
	set	set [-m <mib name> ] [-n <module name>] <attribute name> <attribute set value> [indexes]
	who	Shows the users currently logged into the radio

Aprisa SR+ User Manual 1.6.0 PO

326 | Managing the Radio

Viewing the CLI Terminal Summary

At the command prompt, type:

cd APRISASR-MIB-4RF

MPA APRISASR-MIB-4RF >>ls Terminal

Changing the Radio IP Address with the CLI

At the command prompt, type ‘set termEthController1IpAddress xxx.xxx.xxx.xxx’

Aprisa SR+ User Manual 1.6.0 PO

In-Service Commissioning | 327

8.In-Service Commissioning

Before You Start

When you have finished installing the hardware, RF and the traffic interface cabling, the system is ready to be commissioned. Commissioning the radio is a simple process and consists of:

1.Powering up the radios.

2.Configuring all radios in the network using SuperVisor.

3.Aligning the antennas.

4.Testing that the links are operating correctly.

5.Connecting up the client or user interfaces.

What You Will Need

Appropriately qualified commissioning staff at both ends of each link.

Safety equipment appropriate for the antenna location at both ends of each link.

Communication equipment, that is, mobile phones or two-way radios.

SuperVisor software running on an appropriate laptop, computer, or workstation at the base station radio.

Tools to facilitate loosening and re-tightening the antenna pan and tilt adjusters.

Predicted receiver input levels and fade margin figures from the radio link budget.

Aprisa SR+ User Manual 1.6.0 PO

328 | In-Service Commissioning

Antenna Alignment

A base station omni-directional collinear antenna has a vertical polarization. The remote station yagi antennas must also have vertical polarization.

Aligning the Antennas

Align the remote station yagi antennas by making small adjustments while monitoring the RSSI. The Aprisa SR+ has a Test Mode which presents a real time visual display of the RSSI on the front panel LEDs. This can be used to adjust the antenna for optimum signal strength (see ‘Test Mode’ on page 44).

Note: Low gain antennas need less adjustment in elevation as they are simply aimed at the horizon. They should always be panned horizontally to find the peak signal.

1.Press and hold the TEST button on the radio LED panel until all the LEDs flash green (about 3 - 5 seconds).

Note: The time for the LEDs to display the RSSI result is variable, depending on the network traffic, and can be up to 5 seconds. Small antenna adjustments should be made and then wait for the display to refresh.

The RSSI poll refresh rate can be set with the SuperVisor command ‘Transmit Period’ (see ‘Maintenance > Test Mode’ on page 210).

2.Move the antenna through a complete sweep horizontally (pan). Note down the RSSI reading for all the peaks in RSSI that you discover in the pan.

3.Move the antenna to the position corresponding to the maximum RSSI value obtained during the pan. Move the antenna horizontally slightly to each side of this maximum to find the two points where the RSSI drops slightly.

4.Move the antenna halfway between these two points and tighten the clamp.

5.If the antenna has an elevation adjustment, move the antenna through a complete sweep (tilt) vertically. Note down the RSSI reading for all the peaks in RSSI that you discover in the tilt.

6.Move the antenna to the position corresponding to the maximum RSSI value obtained during the tilt. Move the antenna slightly up and then down from the maximum to find the two points where the RSSI drops slightly.

7.Move the antenna halfway between these two points and tighten the clamp.

8.Recheck the pan (steps 2-4) and tighten all the clamps firmly.

9.To exit Test Mode, press and hold the TEST button until all the LEDs flash red (about 3 – 5 seconds).

Aprisa SR+ User Manual 1.6.0 PO

Product Options | 329

9.Product Options

Data Interface Ports

The standard Aprisa SR+ provides multiple interface port options for combinations of Ethernet and RS-232 serial for a total of four interface ports i.e. port options of 2E2S, 3E1S or 4E0S, where E=Ethernet, S=Serial port.

The product shown below is the two Ethernet ports plus two RS-232 serial ports.

Interface Port Option			Part Number
4	Ethernet ports and no RS-232 serial ports		APSQ-N400-SSC-HD-40-ENAA
3	Ethernet ports and 1	RS-232 serial port	APSQ-N400-SSC-HD-31-ENAA
2	Ethernet ports and 2	RS-232 serial ports	APSQ-N400-SSC-HD-22-ENAA

Note: The optional serial interface is always available via the USB to serial converter.

Full Duplex Base Station

The Aprisa SR+ supports Full Duplex base / master station hardware. This option works with half duplex repeater / remote radios. The base / master station can transmit while simultaneously receiving from the repeater /remote radios.

Example of a 400 MHz full duplex Aprisa SR+.

Part Number	Part Description
APSQ-N400-SSC-FD-22-ENAA	4RF SR+, BR, 400-470 MHz, SSC, Full Duplex, 2E2S, EN, STD

Aprisa SR+ User Manual 1.6.0 PO

330 | Product Options

Protected Station

The Aprisa SR+ Protected Station is fully monitored hot-standby and fully hot-swappable product providing radio and user interface protection for Aprisa SR+ radios. The RF ports and interface ports from the active radio are switched to the standby radio if there is a failure in the active radio.

Option Example
Part Number	Part Description
APSQ-R400-SSC-HD-22-ENAA	4RF SR+, PS, 400-470 MHz, SSC, Half Duplex, 2E2S, EN, STD

The Aprisa SR+ Protected Station is comprised of an Aprisa SR+ Protection Switch and two standard Aprisa SR+ radios mounted in a 2U rack mounting chassis.

All interfaces (RF, data, etc.) are continually monitored on both the active and standby radio to ensure correct operation. The standby radio can be replaced without impacting traffic flow on the active radio.

The Aprisa SR+ radios can be any of the currently available Aprisa SR+ radio frequency bands, channel sizes or interface port options.

The Aprisa SR+ Protected Station can operate as a base station, repeater station or remote station. The protection behaviour and switching criteria between the active and standby radios is identical for the three configurations.

By default, the Aprisa SR+ Protected Station is configured with the left hand radio (A) designated as the primary radio and the right hand radio (B) designated as the secondary radio.

Each radio is configured with its own unique IP and MAC address and the address of the partner radio.

On power-up, the primary radio will assume the active role and the secondary radio will assume the standby role. If, for some reason, only one radio is powered on it will automatically assume the active role.

Both the Aprisa SR+ Protected Station primary radio and secondary radio must be operating on the same software version.

Aprisa SR+ User Manual 1.6.0 PO