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Frame Count Check on SDR Record Data
The frame count check is aimed to investigate loss of the records compared to what is expected and time frame of each record. The results for each group of tapes in a shipment to Data Recovery International, Inc. are shown in a table (html file). In the table, "Tape-ID" of "SDRXXYYDDDNN" is an identification of the data code version (XX), generation year (YY), day (DDD) and the tape version (NN). "Original Record#" means the number of records count in the data file indicated by the SDR header; "Recovered Record #" means the totally recovered record number; "Loss" means the lost number of record count during the data recovery because of the tape damage; "Early" means the frame count of the data record is before the beginning frame count indicated in the header; "Late" means the data is after the ending frame count in the header.; "Reverse" means the frame count in a data record is before the previous record's frame count. "Gap" means the frame count jumped by more than 1199, which is a 2-minute gap (1200/10 = 120 seconds = 2 minutes). "Slip" means the frame count didn't continue incrementing by 10 (modulo 32), which may indicate an instrument/platform reset or some other problem with the data.
GOSTA NPOESS VIIRS OPeNDAP DODS LAS HRPT LAC GAC HDF-SDS DMAC PO.DAAC LTSRF CoRTAD
|Last modified: Thu, 5-Sep-2013 22:37 UTC||NCEI.email@example.com|
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