User manual

Operation
Starting communication
1 .Power on the light meter first and connect it to a PC USB port with the cable provided
2. Run the HD400 software program.
3. If the connection is successful the panel will display the same value as the light meter
4. If the connection fails the software will display "OFFLINE" on the panel window .
5. If you fail to connect, check you cable first, close all other application and then choose other
serial ports from the menu until the connection is successful. Wait a few second after a new
com port is selected to see if the communication is successful. When successful, the com port
selections will turn gray (become inactive).