User's Manual

Introduction
Getting Acquainted
12 www.javad.com
1. Getting Acquainted
The HPT225BT is a rugged and very powerful external radio transceiver 152 mm wide 84 mm deep 72
mm high, weighs 900 g.
1.1. LEDs
External LED's (see Figure 2) are used for Link and Line status indication:
1.2. Data and Power Ports
The HPT225BT data and power port are placed on the front of the unit (Figure 2).
Figure 2. HPT225BT front side
Through the data port the HPT225BT modem can be connected to RS-232 serial port with Data-Ser
Cable, DB9/DB15 (6ft/1.8m), or this port can be configured as RS422/485 and connected to the RS-422
or RS-485 ports. With Data-Ser Cable, ODU-7/DB15 (6ft/1.8m) the modem can be connected to the
JAVAD GNSS receiver.
Through the power port the HPT225BT modem can be powered. See “Powering HPT225BT” on page 15
for detailed information.
Positio
n
LED
Name
Color Description
1 PWR Green Active if Power connected to modem
2 SYNC Red Active whenever a signal with a level sufficient for reliable reception exists on the
radio channel.
3 TX/RX Green Active if modem receives or transmits Data over serial interface
4 ALARM Red Active if modem receives or transmits Data over Bluetooth
Data port
Power port
LEDs