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DS.11 FAQ
A-3
What is the normal PER (Packet Error Rate) for the BU-DS.11/RB-DS.11?
The error rate will be about 4%-6% (transmitted fragments vs. retry count). This is
typical when operating in a non-interference environment at maximum range for bi-
directional traffic loads. If the traffic load is more uni-directional, then the PER will be
lower.
What is the best value for the CW min parameter?
Setting the CW min parameter to 7 should only be used for short-range point-to-
point links.
Setting the CW min to 15 will improve performance for more uni-directional traffic
loads.
CW min of 31 will minimize the PER for heavy bi-directional traffic loads.
CW Min of 63 should be used for large, long-range multi-point links.
Is the DS.11 compatible with other DS equipment from other vendors?
The DS.11 is compatible with other IEEE 802.11b compliant devices from other
vendors. However, in some cases it may not interoperate if the other manufacturer’s
implementation is not pure 802.11b. The BU-DS.11/RB-DS.11 can operate at 1 and
2 Mbps with legacy 802.11b DS equipment, provided the Short Preamble option is not
enabled. It can operate at all rates with 802.11b High Rate DS equipment. BreezeNET
DS.11 units are also fully WI-FI compliant. When the proprietary Scrambler
differentiating option is activated, the units will not interoperate with equipment from
other vendors.
What is the typical latency of a BU-DS.11/RB-DS.11?
The latency in a point-to-point link is about 2mS.