Campbell Scientific LNDB LoggerNet Database Software - Manual (Page 9)

LNDB
You can choose to install the service under the Local System account or under
a User account. Note that a User account is most likely necessary if you are
using Windows Authentication in SQL Server. In most other cases, the Local
System account can be used. If User account is chosen, you will be asked to
provide a username and password.
Once the application is installed as a service, press the Start button on the
LNDB Engine Service Manager window to start the service.
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