Operator`s manual

22
Installation, Operation and Maintainance of Buoy Operated Automatic Meteorological Stations
CR10X Storage and Control Module
Software. The user is referred to the separate SPLIT manual, included in Campbell Scientific’ Instruction Manual for
the PC208W Datalogger Support Software.
Problem 3: Although data transfer from logger to SM4M has been concluded successfully, the downloaded data
does not cover the whole period between present and previous data dump. Instead, the available data only seems to
come from the most recent period.
Cause: The SM4M automatically retrieves all data between Storage Module Pointer (SPTR) and Data Stor-
age Pointer (DSP). In this particular case, the period between the two last data retrieval events has generated more
data than the capacity of the logger’s RAM. Consequently, given the logger’s ring mode, new data have been written
over not yet retrieved locations. The location of the SPTR has remained unchanged while the DSP, because of the
circular configuration, has come back to its original position at a certain stage, and once again moved in front of the
SPTR.
Remedy 3: Increase the frequency of inspection and data retrieval visits to the station. Part of the lost informa-
tion can be recovered by manually down loading data using the “star-eight” mode. To this end follow the instructions
given under “Remedy 2”.