NSSDCA ID: PSPG-00540
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
This data set contains Mariner 4 MDL Reacquisition Tapes copied from 7-track magnetic tapes onto CD-WO as part of the Science Digital Data Preservation Task. The data were copied from a collection of tapes that, in most cases, were at least 15-20 years old. The 7-track data in this dataset was padded. The 6 bit characters were padded to 8 bits by placing zeroes into the 2 high order bits. The file MDL_INFO.TXT located on each CD, correlates the tape ID with the corresponding CD Volume and descriptions of the tapes' contents. Each CD has been formatted so that a variety of computer systems (e.g IBM PC, Macintosh, Sun, VAX) may access the data. Specifically, the discs are formatted according to the ISO 9660 level 1 Interchange Standard, and file attributes are specified by Extended Attribute Records (XARs).
This data set was created at JPL as part of its Science Digital Data Preservation Task (SDDPT), and a copy was provided to NSSDC for safekeeping. Numerous SDDPT data sets are not readily usable, as they represent bit copies of old data tapes and do not contain user documentation. In general, these data are stored at NSSDC for archive, not distribution, purposes. The data are not always in a readily accessible form. In order to request this data, please talk to the NSSDC contact person listed for this data set.
This is SDDPT data set code 64_077A-0003, volume ID M64_4101.
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Francisco Loaiza | Data Provider | NASA Jet Propulsion Laboratory | loaiza@mailhost4.jpl.nasa.gov |
Ms. Susan K. LaVoie | General Contact | NASA Jet Propulsion Laboratory | sue.k.lavoie@jpl.nasa.gov |