Receiver Functions
16-5
Acknowledgment: Sends OK
Errors:
Error Meaning
? err 1 wrong number of digits entered
? err 2 illegal digit entered, or conflict in parameters
Default: No Macros exist;, Pulse Count is 3; Minimum Duration is 0.5 sec;
Window Time Is 5.0 sec
How it Works
The Window Timing Cycle starts at the leading edge of the first Pulse. If the
pulse is longer than the Minimum Duration programmed, it is counted. If the
correct number of pulses is counted before the Window “closes,” the
programmed COR Pulse-Triggered Macro will be executed upon the falling
edge of the last counted pulse.
The controller calculates a Maximum Pulse Duration and Maximum Dead Zone
(time between pulses) when you program the parameters. During a window
timing cycle, the controller is timing pulses and deadzones. The window cycle
will be aborted if the inter- pulse dead zone exceeds the maximum value; if any
pulse exceeds the maximum value; and if any pulse is less than the minimum
duration. This means that a new window timing cycle can begin as soon as the
old one is either properly executed or discarded for any reason.
Pulses are created by COR and PL signals and depend upon the repeater
access mode. If the repeater is in carrier access mode, the controller will count
pulses at the COR input. If the repeater is in And-PL access mode, the
controller will count pulses that are comprised of both COR and PL signals.
Examples:
To execute macro 1234 if 3 COR pulses of at least 0.5 seconds each are
detected within a 5.0-second window. Enter these two commands:
(PW) 26 17 1234 * ;(which assigns macro “1234”).
(PW) 47 0 3 0050 0500 * ;(which assigns parameters).
“0025” = 25 x 10mS = 250mS = 1/4 second and “0500” = 500 x 10mS = 5000mS = 5.0 seconds
The controller calculates that 4 pulses times 1/4 second each, which equals
one second pulse duration. The maximum dead zone is then 4 seconds, and
no pulse can exceed 4 1/ 4 seconds. The window will close if any of these
timers are exceeded.
The controller will respond with an error message if the pulse count, multiplied
by the minimum duration, exceeds the window time.
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