Quanta 70: Installation and Configuration

09

Diagnostics

Quanta 70 diagnostic tools area: a dashboard, a system log, in some cases the Alignment utility. More detailed information about these tool you can find in 4. Mounting and Antenna alignment.

Dashboard

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 wired network status.

In the "Wired interface" tab, the wired Combo interface status can be monitored (copper media is for the Ethernet connection, fiber media indicates that device is connected via SFP), as well as 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.

Modulation and coding scheme

On Quanta 70 device, 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) and both polarizations. 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. Each MCS corresponds with certain EVM value. To achieve the best link quality, try to get EVM to values 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.

System log

An important tool in troubleshooting, which allows to track changes that preceded the link degradation. To view the system log, go to "Service" → "Maintenance" → "Device information" and click the "Show log" button.

Previous Next