User's Manual

R-TRON Proprietary & Confidential Page 11
4.2 Connect communication cable
Connect communication cable as followings,
4.3 Power on
After connecting the communication cable, you can supply AC power to the HB 1900. As you
can see the following picture, when you supply AC power to the HB 1900, the DC 5V LED light
up one time. After 3 or 4 seconds later, the modem power(3.3Voltage) LED light up two times.
Then 10 seconds later, the LED light three times. This signals that the heartbeat unit is ready for
communication. Finally, you can execute GUI program and get the heartbeat communication
started.
4.4 How to start GUI Program
Click HB 1900 v1_2.exe.