Simplex Protocol - Javad HPT404BT Operator's Manual

Configuration
Configuring HPT404BT

Simplex Protocol

2.6.1. Simplex Protocol
When the HPT404BT modem is loaded with special firmware which supports Simplex protocol
ModemVU general window will be like below:
1. On the Radio Link tab, set the following parameters (Table 2-1) and click Apply.
Parameter
Protocol
Mode receiver/
Echo to serial port
Frequency
Output power
1. Simplex protocol is a communications protocol that is purely one-way, and where acknowledgments are not part of any application
protocol.
20
Figure 2-7. Radio Link tab. Simplex protocol
Table 2-1. Modem Parameters for the Radio Link Tab
Base Modem
Simplex Transmitter or
Simplex Transmitter to
Repeater
For Base, Repeater, and Rover modems the protocol type must be the same.
-
Set the frequency in band 406-470 MHz with 6.25 kHz channel spacing.
For both Base and Rover modems the frequency must be the same.
Select the transmission
power for the radio modem.
Repeater
Simplex Repeater
ON- enables echoing to
serial port;
OFF - disables echoing to
serial port
1
, the
Rover Modem
Simplex Receiver
Auto - allows receiving data
from base and repeater in
1
auto mode .
Only from Repeater - allows
receive data only from
2
repeater .
Only from transmitter to
Repeater - allows receive
data from base transmitter
n/a
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3
.