User's Manual

Liberator-V1000 User Manual Rev 04v05
Page 43 of 85 FBN Doc #: FBN-0125_04v05
Figure 47 - QoS Settings
After setting the QoS parameters, it is necessary to click on “Apply”, and then to reboot the terminal for any
changes to take effect. This allows both terminals to be set to the correct settings before QoS filtering is
performed on the traffic.
5.4.4 Administration – Radio
This page is used to control the radio interface: it displays the radio parameters for both the local and remote
sides of the link, and allows the user to make changes. Please note that any changes made to either Transmit
Power or Channel Selection must be carefully considered before making any changes, as it may result in the
radio link going down, and therefore the remote side will no longer be contactable. Firmware version
02.01.03.01 and later supports a rollback feature, so that any changes to certain configurations including Tx
Power or Frequency require a confirmation within a pre-defined expiry time (default 3 minutes): this is a
failsafe mechanism so that if the requested change caused the link to drop then the setting will automatically
be rolled-back to its previous value if left unconfirmed until the expiry time is reached. For a list of all
configuration that is subject to confirmation and potential rollback see section Configuration Rollbacks.
The Transmit Power Limit section can be used to set the power to either: High, Medium or Low.
Tx Power Setting
QPSK (700Mbps max)
Nominal Average Tx Power
into Antenna
8PSK (1Gbps)
Nominal Average Tx Power
into Antenna
High
+7.5dBm (FCC) and +6 dBm (Rest of World)
+4 dBm
Medium
+3 dBm
-1 dBm
Low
-5 dBm
-5 dBm
The transmit power should typically be reduced on shorter links (less than 150 metres) to ensure that the
RSSI is not higher than -25dBm wherever possible. Please use the Link Availability Calculator to work out the
correct link budget for your link before changing the Transmit Power, which should be the same on both ends
of the link. Enabling ATPC (Automatic Transmit Power Control), will allow the transmit power to be
dynamically adjusted by the radio in response to changing propagation conditions (e.g. rain fade). The
transmit power will never move above the level set by the Transmit Power Limit. Always press “Submit”