Alvarion Technologies Ltd. BMAX-BA36 ユーザーズマニュアル
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Operation
Chapter 4 - Operation and Administration
4.5.2.7.2.2
GPS Supported
This is a read-only parameter indicating whether the use of GPS is supported by
the Base Station (through the Redundant CPLD in the NPU). The options are
Supported or Not Supported.
the Base Station (through the Redundant CPLD in the NPU). The options are
Supported or Not Supported.
4.5.2.7.2.3
GPS Protocol
The GPS Protocol defines the communication protocol with the GPS receiver.
The available options are None, Trimble (for Outdoor GPS Receiver) and
Symmetricom (for Indoor GPS Receiver).
Symmetricom (for Indoor GPS Receiver).
The default is Trimble.
4.5.2.7.2.4
Time Zone Offset From UTC
This is the offset of the local time from UTC (Coordinated Universal Time).
The range is from -12:00 up to +13:00 in 30 minutes resolution. The format must
be either -XX:YY or +XX:YY where YY is either 00 or 30.
be either -XX:YY or +XX:YY where YY is either 00 or 30.
The default is +02:00.
4.5.2.7.2.5
Stop Tx After Hold Over Timeout
For initial synchronization, a minimum of four satellites must be received properly
(meeting certain criteria). Upon losing the 1PPS clock from the GPS, or if the
received clock is not considered accurate enough because the number of received
satellites dropped below the minimum (two satellites), the local 1PPS clock will be
generated using the available 16 MHz clock. After a certain time (defined by the
Hold Over Passed Timeout parameters described below), it is assumed that due to
clock drifts there might be interferences among sectors belonging to the Base
Station and sectors belonging to neighboring Base Stations). If the Stop Tx After
Hold Over Timeout parameter is set to Enable, the Base Station will stop
transmitting after this timeout (unless the number of properly received satellites
has increased again to four or more), to prevent interferences to the sectors
belonging to other Base Stations. If it is set to Disable, transmissions will continue
indefinitely, at the expense of potential interferences to sectors belonging to other
Base Stations.
(meeting certain criteria). Upon losing the 1PPS clock from the GPS, or if the
received clock is not considered accurate enough because the number of received
satellites dropped below the minimum (two satellites), the local 1PPS clock will be
generated using the available 16 MHz clock. After a certain time (defined by the
Hold Over Passed Timeout parameters described below), it is assumed that due to
clock drifts there might be interferences among sectors belonging to the Base
Station and sectors belonging to neighboring Base Stations). If the Stop Tx After
Hold Over Timeout parameter is set to Enable, the Base Station will stop
transmitting after this timeout (unless the number of properly received satellites
has increased again to four or more), to prevent interferences to the sectors
belonging to other Base Stations. If it is set to Disable, transmissions will continue
indefinitely, at the expense of potential interferences to sectors belonging to other
Base Stations.
The default is Disable (Hold Over indefinitely).
4.5.2.7.2.6
Hold Over Passed Timeout (Min)
This parameter defines the Hold Over timeout, after which there might be
interferences to other sectors. When the Stop Tx After Hold Over Timeout is
enabled, transmissions will stop after this timeout. When the Stop Tx After Hold
Over Timeout is disabled, this timeout is used to generate a trap indicating that
there might be interferences to neighboring sectors.
interferences to other sectors. When the Stop Tx After Hold Over Timeout is
enabled, transmissions will stop after this timeout. When the Stop Tx After Hold
Over Timeout is disabled, this timeout is used to generate a trap indicating that
there might be interferences to neighboring sectors.