User Guide

16
Check that the laser focal spot is on the substance to be identified and
not in the air. Otherwise, this sample may not produce a Raman signal or the
signal may be too weak to measure.
Offline detection
Your device may only use offline detection in the following circumstances:
• The device is logged in to an account, and you have manually chosen offline
detection.
• The device is logged in to an account, but the network connection has been lost.
• The device is not logged in to an account.
Offline detection uses the spectral database on your device to compare detection
results. The results will be temporarily saved to the device only. To upload the results
to the cloud, re-connect the device to the network.
The offline detection results will be handled in different ways depending on the
situation:
• The device is logged in to an account, and you have chosen offline detection: The
results will be saved to the device. When you switch to online detection, the offline
detection results will be automatically uploaded to the cloud.
• The device is logged in to an account, but you lost your network connection and
were automatically switched to the offline detection mode: When the network
connection is restored, the detection results will be automatically uploaded to the
cloud.