Javad HPT402, Руководство оператора

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Configuration
Configuring HPT402
Power supply requirements
20
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Table 2-1. Modem Parameters for the Radio Link Tab
Parameter Base Modem Repeater Rover Modem
Protocol
Simplex Transmitter or
Simplex Transmitter to
Repeater
Simplex Repeater Simplex Receiver
For Base, Repeater, and Rover modems the protocol type must be the same.
Mode receiver/
Echo to serial
port
-
ON- enables echoing to serial
port;
OFF - disables echoing to
serial port
Auto - allows receiving data
from base and repeater in auto
mode
1
.
Only from Repeater - allows
receive data only from repeater
2
.
Only from transmitter to
Repeater - allows receive data
from base transmitter
3
.
Frequency
Set the frequency in band 406.1-470 MHz with 6.25 kHz channel spacing.
For both Base and Rover modems the frequency must be the same.
Output power
Select the transmission
power for the radio modem.
n/a
Modulation type
Specifies a modulation scheme that will be used by your modem.
DQPSK is recommended.
For both Base and Rover modems the modulation type must be the same.
Link Rate The link rate is selected automatically
Link Space For both Base and Rover modems the link space must be the same.
Forward Error
Correction
Enable Enable
Scrambling Enable Enable
1. In Auto mode rover receives the data from both base transmitter and repeater. The sophisticated
algorithm of data receiving allows the modem to eliminate any data doubling.
2. In this mode the incoming data from base transmitter will be ignored.
3. In this mode the incoming data from repeater will be ignored.