User's Manual
Configuration
Checking Firmware Version
Simplex Protocol
21www.javad.com
2. When finished, click FileDisconnect.
2.7. Checking Firmware Version
Use ModemVU to check the firmware version of your HPT404BT.
1. Connect your modem and computer. See “Connecting HPT404BT and Computer” on page 17 for
this procedure.
2. Start ModemVU. Select the HPT404BT and than the COM port and click Ok (see “Configuring
HPT404BT” on page 19).
3. Click on Identification tab (Figure 2-8).
Figure 2-8. Identification tab
This tab lists important information about the hardware accessories and software properties.
4. Click FileDisconnect, then FileExit to quit ModemVU.
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 algo-
rithm 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.
Parameter Base Modem Repeater Rover Modem