LED indicators
Abnormal heartbeat / serial communications LED behavior
could mean potential problems with the meter.
| Problem | Probable causes | Possible solutions |
|---|---|---|
| LED flash rate does not change when data is sent from the host computer. | Communications wiring | If using a serial-to-RS-485 converter, trace and check that all wiring from the computer to the meter is properly terminated. |
| Internal hardware problem | Perform a hard reset: turn off control power to the meter, then re-apply power. If the problem persists, contact Technical Support . | |
| Heartbeat / serial communications LED remains lit and does not flash ON and OFF | Internal hardware problem | Perform a hard reset: turn off control power to the meter, then re-apply power. If the problem persists, contact Technical Support . |
| Heartbeat / serial communications LED flashes, but the display is blank. | Display setup parameters incorrectly set | Review display parameter setup. |
If the problem is not fixed after troubleshooting, contact Technical Support for help. Make sure you have your meter’s firmware version, model and serial number information available.