First of all, make sure the communication settings are correct, by clicking ‘Communication’ and ‘Serial Port’. The correct ‘Com Port’ and ‘Baud Rate’ should be selected. Make sure ‘Hard break’ is not selected, unless it is a very old instrument (pre-2001).
There are two ways to check communication:
- Click ‘Communication’ and ‘Terminal Emulator’. Send a break command by clicking ‘Send Break’. The instrument should respond with a message which includes the model, firmware version and command mode.
- Click the ‘Check communication’ icon. The same information as above will be displayed in a small window and the ‘System’ page will also be refreshed with serial number etc.
Please note: There has been some confusion about the meaning of the ‘Disconnected/Connected’ message in the lower right-hand corner of the display. The ‘Connected’ message will only appear when data is being transmitted or received, e.g. when configuring and starting up the instrument. Otherwise the ‘Disconnected’ message will be displayed.
The Troubleshooting Manual (part of the Comprehensive Manuals) will be the next source of information.