User's Manual

2-13
Host Response Delay
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Delay, in 1/10 second increments (.1 to 9.9 sec) 01 – 99
• Host Response Delay allows you to set a specific amount of time for a
Terminal to wait before it attempts to retransmit data. By default, after a RF
Terminal transmits its data to the host, it listens for a response from the host
for 300ms. If the Terminal does not get a response or gets a "go to sleep"
message during that time, it "wakes up" and re-transmits it's data according
to the intervals specified below:
Interval Number of times repeated
½ second 5 times
2 seconds 1 time
4 seconds 1 time
8 seconds 1 time
16 seconds indefinitely - until prompt received
These “wake up” intervals are fine, especially if your host program processes
it’s data quickly and gets a new data prompt out to the terminal sometime
within the first set of ½ second interval. But if your host program is slow to
respond, the continual re-transmissions outlined above generate a lot of
unnecessary radio traffic. If your host program doesn’t process your data
quickly enough to get a new prompt out to the terminal within a 1/2 second,
Host Response Delay allows you to set a particular delay value that
determines the first time the terminal will check with the Base for a new
prompt. When you know your host program can't respond for 2 seconds, it
doesn't make sense to check the host after ½ second and then every ½ sec for
5 times! This will significantly reduce the amount of radio traffic and
conserve battery power. Reduced radio traffic also translates into more
Terminals per Base and better response times in multi-Terminal networks.
• Host Response Delay is particularly useful when multiple Terminals share a
Base Station. By specifying the delay and eliminating wasted radio time, the
actual average total response time will be less.
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