
7K
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Chapter 16
16-8
Select From-Start-of-Transmission Timer
Allows controller to “disconnect” the DTMF decoder from a receiver
if it appears no DTMF command will be entered during a
transmission.
•
The DTMF decoder is free to find another source of DTMF commands if the
current user does not enter a digit within 5 seconds from start of
transmission (See the
command on page 11-3).
•
Reduces DTMF “falsing”, since the DTMF decoder only listens during the
beginning of the transmission.
•
Enter one digit, 0 for OFF (disabled), 1 for ON (enabled).
Command Form:
Command
Form
Data Digit
Enable/Disable From-Start-of-Transmission
Timer for RX1
(PW) 63 64 x *
0 = OFF (disabled)
1 = ON (enabled)
Enable/Disable From-Start-of-Transmission
Timer for RX2
(PW) 63 65 x *
0 = OFF (disabled)
1 = ON (enabled)
Enable/Disable From-Start-of-Transmission
Timer for RX3
PW) 63 66 x *
0 = OFF (disabled)
1 = ON (enabled)
Acknowledgment:
Sends OK
Errors:
Error
Meaning
? err 1
wrong number of digits entered
? err 2
illegal digit entered
Default Condition:
From-Start-of-Transmission Timer is OFF (disabled) for all
receivers.
Examples:
If this feature is disabled, the receiver will feed the DTMF decoder for the
duration of the transmission (subject to its priority. (See the
If this feature is enabled, the receiver will feed the DTMF decoder for the first 5
seconds of the transmission (subject to its priority). If a user wishes to enter a
command and has already transmitted more than 5 seconds, he must unkey
and re-key before entering the command. Once a DTMF digit is entered, the
receiver will continue to feed the DTMF decoder for the remainder of the
transmission.
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