SM500F
Field mountable paperless recorder 6 Archiving
58 IM/SM500F Rev. Z
6.4.5 Text Format Data File Digital Signatures
A digital signature file is created for each channel data file using the same filename but with a *.S**
extension. The file contains a unique 'fingerprint' of the contents of the data file that can be used to prove if
the data has been tampered with or corrupted. Data validation can be carried out on a PC using the
Company's DataManager software package.
6.4.6 Text Format Data Verification and Integrity
When data is saved to the archive media it is checked automatically to verify that the date value stored on
the media matches exactly the date value stored in the internal memory.
Fig. 6.4 Totalizer Log Sample – Text Format
Fig. 6.5 Audit Log Sample – Text Format
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