System Parameters - Psion Teklogix 7535 User Manual

Chapter 6: Tekterm Application

System Parameters

Initial RTT (Round Trip Time)
Round trip time is the elapsed time between a hand-held computer transmission and
an access point acknowledgement. Each 7535/7530 continuously adjusts the accept-
able round trip time, calculating the average elapsed time over a number of trans-
missions. If an acknowledgement takes longer to receive than the average round trip
time calculated, the computer will resend the transmission.
Because 7535/7530s cannot calculate an average round trip time without a number
of transmissions, a starting point or "Initial Round Trip Time" is required. The com-
puter uses the time assigned to the "Initial RTT" parameter as a starting value for
round trip calculations. Once the 7535/7530 begins transmitting and receiving data,
this value will be adjusted to reflect the actual average round trip time between
transmissions and acknowledgements.
Protocol Type
"Protocol Type" is used to identify the Ethernet packet frame type sent by the
7535/7530. The default value –
Teklogix 802.IQ protocol Ethernet packet frame types.
The "Protocol Type ID" should only be altered if the default value is already being
used to specify another application Ethernet frame type.
Important:

6.16 System Parameters

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If you change the value assigned to "Protocol Type ID",
ensure that all 7535/7530s and 9150s in your system use the
same number.
03 System
Keyboard
Audio
Pwr Mgmt Ctrl Panel»
User Permissions
Window Properties
Auto Start
– assigned to this parameter identifies the
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