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This section is intended to provide the main information about the wireless unit operation. 

The Dashboard displays a read-only summary of the current link status information, local and remote device signal strength, capacity for downlink and uplink, current values of the basic configuration settings and Ethernet network status.

Device status

Figure - Device status
ParameterDescription
TypeThe device type: Master or Slave.
StatusWireless connection state.
Device uptimeThe device operating time since the last reboot.
Firmware versionThe firmware version uploaded to the device.

Wired interface

In the "Wired interface" tab, the Ethernet interface status can be monitored, as well as media type, duplex mode and traffic load for reception and transmission. The wired interface statistic is available on the right side, it can be reset by the "Clear counters" button.

Figure - Wired interface paraqmeters
ParameterDescription
Runt packetsPackets less than 64 bytes in size
Oversize packetsPackets larger than 9038 bytes
FCS errorsPackets dropped due to checksum mismatch. The possible reasons for the error counter increasement are described in the "Troubleshooting⁣⁣⁣" article
Port overflow errorsPackets dropped due to port buffer overflow

Wireless link status

The “Radio” tab displays the current settings of the wireless connection, as well as the link load in the uplink and downlink directions.

Figure - Wireless link parameters
ParameterDescription
DistanceThe estimated link length.
Link uptimeThe link operating time since the last outage.
Remote unitThe remote device name.
Center frequencyCenter frequency value set in the "Radio" section manually or by the automatic frequency selection mechanism.
Channel widthThe channel width value set in the "Radio" section.
TrafficThe wireless link capacity and utilization in the uplink and downlink directions.
Frame sizeThe frame size value set in the "Radio".
DL / UL ratioThe ratio of the downlink traffic to uplink, set in the "Radio" section manually or by a mechanism for automatically determining the optimal ratio.
Tx powerThe transmitter power value on the local device determined by the automatic power control mechanism. If the automatic transmit power control tool is disabled, the value set manually by the user will be displayed.
Remote X powerThe transmitter power value on the remote device determined by the automatic power control mechanism. If the automatic transmit power control tool is disabled, the value set manually by the user will be displayed.

Availability statistics

The link availability statistics window displays the following information:

  • The overall wireless link availability since the last device reboot, the number of wireless outages when the connection was unavailable.
  • Availability statistics for each modulation, for downlink and uplink streams.

Figure - Availability statistics

Modulation code scheme

Modulation and coding schemes are selected independently for each channel (uplink and downlink). Current modulation for each channel is displayed in the MCS subsection.

Received signal strength indicator

The RSSI indicator displays the received signal level for each channel (uplink and downlink). Available values:

  • -90...-80 dBm - close to the receiver sensitivity level, only the lowest modulations are available. 
  • -80...-60 dBm - average input range.
  • -60...-40 dBm - the recommended range for achieving best performance.
  • >-40 dBm - input signal level is too high.

EVM

Error vector magnitude - indicator of the measured input signal quality, telling how far are the received constellation symbols compared to the ideal symbols of the constellation. The parameter value must be as high as possible in absolute value. 

The recommended level should be less than -21 dB.

Retries and Frame loss

Retried and lost packets need also to be tracked. Retries should tend to zero, link with the retries value more than 5% should not be allowed to operation.

NOTE

Downlink - the direction from Master to Slave, Uplink - the direction from Slave to Master. These directions are correct for the whole link and do not depend on the roles of the devices.