First Digit Time - Kenwood TKR-D710 Function Reference

6 ANALOG COMMUNICATIONS
6.8 Sending and Receiving a DTMF Code

First Digit Time

First Digit Time is the function to extend the length of time longer than ordinary from when the repeater starts
transmitting a DTMF code until the first digit of the DTMF code is sent out.
Extending the transmission time of the first digit of the DTMF code helps the receiving subscriber unit to easily
recognize the incoming DTMF code in order to avoid failure in receiving the DTMF code while the subscriber unit is
in the battery saver mode or scanning.
The length of time until the first digit of the DTMF code is sent out is the sum of the transmission time configured in
DTMF Speed and First Digit Time.
Transmit time for the 1st digit of the DTMF code = the value configured in DTMF Speed (Digit Time) + the value
configured in First Digit Time
Example: First Digit Time: 100 ms, Encode Code: 123
Note
If the first digit of the DTMF code is the * tone or # tone, the first digit is sent out for the length of time configured in First Digit
Time or in * and # Digit Time, whichever is longer.
Configuration using KPG-174D
Configuring First Digit Time (
FUNC (E)/Ver 2.50
PTT Active
Transmit Transmit Start
DTMF 1
First Digit Time Count Start Expire
Time 0 ms
Figure 6-1 First Digit Time
Edit > DTMF > Encode Setting)
See
Inactive
Transmit End
Digit Time
2 3
100 ms
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