Psion Teklogix 7530 Hand-Held Computer User Manual247
Chapter 6: Tekterm Application
802.IQ v2
Initial RTT (Round Trip Time)
Round trip time is the elapsed time between a 7530 hand-held computer transmis-
sion and an access point acknowledgement. Each 7530 continuously adjusts the
acceptable round trip time, calculating the average elapsed time over a number of
transmissions. If an acknowledgement takes longer to receive than the average
round trip time calculated, the 7530 will resend the transmission.
Because 7530s cannot calculate an average round trip time without a number of
transmissions, a starting point or “Initial Round Trip Time” is required. The 7530
uses the time assigned to the “Initial RTT” parameter as a starting value for round
trip calculations. Once the 7530 begins transmitting and receiving data, this value
will be adjusted to reflect the actual average round trip time between transmissions
and acknowledgements.
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