Step-by-step Guide


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4. Step-by-step Guide

The following chapters will guide you step by step through preparation, installation and activation of the RAy link:

Pre-installation Checklist

Familiarise yourself with the controls and prepare your configuration ahead of the installation of the link on the mast tube.

Both units (without antennas) can lie on a desk with flanges running parallel and facing up at an angle, on a non-metal desk they can also face downward. In the case of units operating in the ISM band (RAy17, RAy24), turn unit holder so that they are roughly perpendicular to each other. In the case of units operating in licensed bands (RAy10, RAy11), turn unit holders so that they are roughly parallel to each other. Use an ethernet cable to connect each of the units to a PoE source and connect a PC to one of them for configuration.

Take the following steps to establish a connection between the PC and RAy and perform a basic setup.

Link Configuration

Fig. 4.1: Link Configuration


During operation, never bring waveguides of both stations close to each other. There is a risk of damaging sensitive input circuits.

4.1. Service access

RAy link is supplied with a default configuration of access parameters:

Unit L has the service IP address and mask,
Unit U has the service IP address and mask,
access is allowed over HTTP, HTTPS or SSH,
the username is admin and the password is also admin.

On your PC setup an IP address that is within the mask, i.e.

Then open the https configuration interface, e.g.

Other access options are described in the chapter Settings – Service Access of this manual.

When connection has been established, use the Settings – Service access – Services menu to customise access parameters. Default IP addresses should be replaced with well-chosen operating addresses. Leaving default addresses in place can lead to network problems later.

The menu contains parameters for the entire link, both for the Local and remote Peer units. If a connection has been established, both sets of parameters have been set. While working with an isolated unit, only Local parameters are functional for the currently connected unit.


If link is OK and there are no parameters shown of the station Peer, it is necessary to click on Refresh.

Follows the description of basic settings. After entering values ​​on the screen always save the content by clicking on Apply.


If there is any problem with https certificate after completing the firmware upgrade, please see the Annex Appendix E, Https certificate for further steps.

4.1.1. Menu Settings – General

  • Station name – station can be assigned with a name, e.g. the place of installation.

  • Station location – for easier inclusion the network hierarchy, it is possible to enter the station’s location

Configuration Menu Settings - General

Fig. 4.2: Configuration Menu Settings – General

4.1.2. Menu Settings – Service access – Services

  • IPv4 address – enter a valid IP address to access the drive. The default IP address has to be replaced with a valid address. Keeping the default address will probably lead to future problems in the network.

  • Netmask – enter the network mask.

  • Gateway – if necessary, enter a gateway, otherwise leave blank

  • Enable access protocols that you are going to need. For security reasons, do not enable more than what is necessary.

  • HTTP(S) – allow access to the web interface.

  • Telnet – enabling access to the CLI interface using telnet protocol.

  • SSH – enabling access to the CLI interface using SSH protocol.

  • Management VLAN – Enabling 802.1Q VLAN tag for separation of user and service operations.

  • Management VLAN id – Defining 802.1Q VLAN tag for service operations.

Configuration menu Settings – Service access – Services

Fig. 4.3: Configuration menu Settings – Service access – Services

4.1.3. Menu Settings – Service access – Users

  • Edit – enter the menu.

  • New password – choose a password and enter it.

  • Confirm password – enter the password again to confirm.

Configuration menu Settings – Service access – Services

Fig. 4.4: Configuration menu Settings – Service access – Services

4.1.4. Menu Maintenance – Feature keys

Firmware of the microwave link is capable of limiting the maximum user data speed. The Feature key to unlock specific user data speed should be installed prior to unit physical installation. The microwave link can be operated only at the lowest speed (according to link type down to 5 Mbps) without the installed Feature key. For further details see Feature keys.

4.2. Basic link configuration

Default radio parameters depend on the specific type of link and the specific channel allocation table. Channels are typically set in the lower part of the band, the smallest bandwidth, QPSK modulation, and low power. Both units in the pair should be capable of immediate communication. If it is possible to work with these radio parameters at the installation location, the link can be activated. On an operating link, required operating parameters can then be set up.

If a change in the parameters is necessary, it is done in the menu Settings – Radio and saved by clicking Apply. This applies when working on both units simultaneously if they are connected, otherwise each unit is configured individually. When configuring units individually, pay attention to correct settings of duplex pair for channels TX and RX. For example, if one station has TX channel L1, then the second station must also have the channel RX L1.

4.3. Link test

Verify the functionality of the radio link. Switch in screen Status – Brief:

  • Status Bar displays Link: Ok.
    If the alarm message appears at Local or Peer, this doesn’t necessarily mean there is a problem. The message indicates that the limit at any of the monitored parameters has been exceeded. Essential is the Link: Ok message.

  • The Status screen contains values for both Local and Peer units. N/A next to Peer indicates that the data from the Peer unit has not been transferred. If Link is Ok, simply click Refresh at the bottom of the screen and Peer data will be updated.

  • Menu Status – Detailed – Radio indicates link RSS and SNR values, in case of ACM also the selected modulation and Netbitrate. If the ATPC function is enabled (menu Settings – Radio) it also indicates instantaneous / max. allowed power and for SNR and RSS values it indicates immediate / target value size.

  • Menu Tools – Graphics – Bar indicators display current size of RSS, SNR and BER.

  • Menu Tools – Ping allows you to send a ping test to the selected IP address.

Try out the possibility of modulation:

  • Modulation ACM. In menu Settings – Radio enable ACM. Set the TX modulation parameter to the required maximum value. In menu Status – Brief – Radio you can monitor (Refresh or Start) changes in used modulation based on the instantaneous SNR signal quality. Status and quality of modulation is demonstrated well in menu Tools – Graphics – RX constellation diagram, hit Refresh.

  • To set a fixed modulation go to Settings – Radio, switch off ACM and set the TX modulation to a value from the range of QPSK through 256-QAM based on the results of the previous test. If you choose modulation higher than allowed by SNR, the connection will be lost. Status Link will lose its Ok value. Both units will need to be moved closer to resume the link. If this is not possible, use ethernet to access each unit individually and set the basic modulation QPSK. You can monitor the quality of the received signal under Tools – Graphics – RX constellation diagram.

Verify the functionality of the entire link:

  • If possible, connect user devices to both RAy units over PoE and test mutual communication.

  • Another way of testing this is to connect a PC to the other unit and send a ping from one PC to the other.

  • The minimum variant of this test is to use ethernet cable connection from the PC connected to the local RAy to the PC connected to the remote RAy and test communication between both units over ethernet. This will verify ethernet functionality.

Prepare installation configuration:

  • Bandwidth e.g. 3.5 MHz. To get the highest possible receiver sensitivity, set the bandwidth as narrow as possible according to specific frequency band.

  • TX channel: Use your allocated channel. If you don’t have allocated channel yet, use for example channel L1.

  • RX channel will setup automatically when channel lock activates.

  • TX modulation QPSK to get the highest possible sensitivity.

  • RF power according to selected antenna and according to individual frequency licence. Set the output power as high as possible.

  • Record the access parameters from the Service access menu, especially the IP addresses.

  • Restart by interrupting power supply to verify that the parameters are stored correctly and the link works.

After this preparation phase you can continue to install your devices in working environment.

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