Preamble Length
Preamble Length is the function to extend the duration for sending a preamble when the DMR frame is sent.
Extending
the time for sending a preamble at the beginning of transmission makes the receiving transceiver easier to receive
a call and reduces missing of the beginning of the audio during the scan.
The extended time of a preamble is determined by using the following equation.
Time [sec] = 60 ms x Configuration value for Preamble Length
Configuration using KPG-D1/ D1N
Configuring Preamble
Length (
Transceiver Settings > Personal > Personal Features > DMR Conventional > DMR
> Parameters)
1.10
Sending and Receiving a Status Message (Status Call)
Status Call is a simple messaging system that allows a user to send and receive a status (Status Message). Since the
message is replaced by status, communications can take place quickly and communication traffic can be reduced.
The following methods are available to send a Status Message.
Table 1-10 Sending Status Messages
Transmission
Methods
Description
Status Mode
The transceiver enters Status Mode by a user pressing a PF
key or a key on the keypad, and then
the transceiver will send a Status Message. (Refer to Sending a Status Message.)
Call key
Pressing one of the “Call 1” to “Call 6” keys allocated to the PF keys of the transceiver causes the
transceiver to send the preconfigured Status Message.
For Mobile, the Status Message preconfigured in the transceiver is sent when any of the “Call 1”
to “Call 6” ports allocated to the AUX Input port becomes active.
“Call 1” to “Call 6” can be assigned to the PF keys or AUX Input ports by using KPG-D1/ D1N, and
the Status Message corresponding to each key can be selected from the Status List in DMR.
In this case, a Status Message is always sent to the preconfigured Base ID.
Turning the transceiver
on/ off
The transceiver sends the Status Message configured in the transceiver when the transceiver is
turned on or off. (Refer to Power-on Status Message, Power-off Status Message.)
In this case, a Status Message is always sent to the preconfigured Base ID.
AUX Input Status
Message
(Mobile Only)
The specified Status Message is sent when the AUX Input port goes high level to low level or goes
low level to high level. (Refer to AUX Input Status Message (Mobile Only).)
PC Command
The transceiver will send a Status Message when the transceiver receives a PC command from
the communication port. To use a PC command, “Data” or “Data + GPS Data Output” needs to
be assigned to the communication port of the transceiver. (Refer to Common FUNC Available
Functions for COM Port.)
Configuration using KPG-D1/ D1N
0
Assigning functions to the PF
keys on the transceiver (
Transceiver Settings > Key Assignment)
0
Assigning functions to the AUX Input port ( Transceiver Settings > Extended Function > AUX)
0
Configuring the Status Message corresponding to the Call 1 to Call 6 keys ( Transceiver Settings > Key
Assignment > Call)
1 DMR CONVENTIONAL SYSTEM
1.9 Common Functions for Data Communications
DMR FUNC (K, F)/Ver 2.20 39
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