Specifications

Chapter 4 - Operation and Administration Menus and Parameters
BreezeACCESS 4900 168 System Manual
 Modulation Level 1 - Sends all ACK frames in modulation 1.
The default setting is Basic Rate.
4.2.6.5.7 Average SNR Memory Factor
The Average SNR Memory Factor defines the weight of history (value of last
calculated average SNR) in the formula used for calculating the current average
SNR for received data frames. This average SNR is used by the ATPC algorithm in
the AU and is also included in the Adaptive Modulation algorithm information
messages transmitted by the AU and the SU. The higher the value of this
parameter, the higher is the weight of history in the formula.
Available values: -1 to 32. -1 is for no weight for history, meaning that average
SNR equals the last measured SNR.
Default value: 5
4.2.6.5.8 Number of HW Retries
The Number of HW Retries parameter defines the maximum number of times that
an unacknowledged packet is retransmitted. When the Adaptive Modulation
algorithm is disabled, a frame will be dropped when the number of unsuccessful
retransmissions reaches this value. For details on the effect of this parameter
when the Adaptive Modulation algorithm is enabled, refer to “Adaptive
Modulation” on page 169.
The available values range is from 1 to 14.
The default value is 10.
4.2.6.5.9 Burst Mode
Burst mode provides an increased throughput by reducing the overhead
associated with transmissions in the wireless medium. In a burst transmission
the inter-frame spacing is reduced and unicast data frames are transmitted
without any contention period (burst mode is not activated on
broadcasts/multicasts).
The Burst Mode is available only if Burst Mode is supported by the Sub-Band in
use. For information on how to view the Sub-Bands supported by the unit and the
supported parameters' values and options, refer to section “Show Country
Dependent Parameters” on page 72.
NOTE
The Number of HW Retries parameter is not applicable when the Wireless Link Prioritization Option
is enabled.