Kenwood NEXEDGE NX-200 Function Reference page 465

18 DATA COMMUNICATION FUNCTIONS
18.5 Transparent
Timing for Sending and Receiving Data
 Example in an Analog Conventional system
The following assumes that 250 bytes of Transparent Data are sent from a PC to the transmitting transceiver. The
following is the block diagram if the parameters are configured as below.
Transmit Delay Time: 100 ms
Data Transmit Modulation Delay Time: 400 ms
Data Preamble Extension Time: 50 ms
Transparent Header: Enable
PC →
Transmitting
transceiver
Transmitting transceiver
(Over-the-air command)
Receiving
transceiver
→ PC
The length of time configured for Data Transmit Modulation Delay Time applies to the Gap Time in an Analog
Conventional system. However, if the time configured for Data Transmit Modulation Time is equal to or less than 10 ms,
the Gap Time is a fixed value (10 ms).
 Examples in an NXDN Conventional system
Example 1: If "Transparent" is assigned to a communication port
The following assumes that 250 bytes of Transparent Data are sent from a PC to the transmitting transceiver. The
following is the block diagram if the parameters are configured as below.
Transmit Delay Time: 100 ms
Data Transmit Modulation Delay Time: 400 ms
Transparent Header: Enable
PC →
Transmitting
transceiver
Transmitting transceiver
(Over-the-air command)
Receiving
transceiver
→ PC
The DELAY frame is placed for the amount of time configured for Transmit Delay Time and Data Transmit
Modulation Delay Time before the transceiver begins transmitting, and it is also placed between blocks of data to be
send (Gap Time). The length of time configured for Data Transmit Modulation Delay Time applies to the Gap Time
in an NXDN Conventional system. If the time configured for Data Transmit Modulation Time is equal to or less than
80 ms, the Gap Time is a fixed value (80 ms).
FUNC (K)/Ver 4.00
286 ms
DATA
(250 byte)
TX Delay DATA Block
(100 ms) (80 byte)
Gap Time
Data Transmit Modulation
Delay Time (400 ms)
DATA
(80 byte)
Transparent Header
Figure 18-2 Transparent 2
Data
(250 byte)
DELAY DELAY Data DELAY
(80 byte)
Gap Time
Transmit Data
Transmit
Delay Time
Modulation
(100 ms)
Data
Delay Time
(80 byte)
(400 ms)
Transparent
Header
Figure 18-3 Transparent 3
DATA Block DATA Block
(80 byte) (80 byte)
Gap Time Gap Time
DATA DATA
(80 byte) (80 byte)
Data DELAY Data DELAY
(80 byte) (80 byte)
Gap Time Gap Time
Data Data
(80 byte) (80 byte)
CONTENTS
DATA Block
(10 byte)
DATA
(10 byte)
Data
(10 byte)
Data
(80 byte)
INDEX 431