PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2012-11-08 NOTE = "AAREADME.TXT describes this volume." END_OBJECT = TEXT END PVO-V-OEFD-4--EFIELD-24SEC-V1.0 1978-12-05T07:20:07.282 to 1992-10-08T16:30:23.299 Planetary Plasma Interactions Discipline Node of the Planetary Data System ============================================================================= Brief Volume Description ============================================================================= This volume includes wave electric field amplitudes measured at four different frequencies by the Pioneer Venus Orbiter Electric Field Detector. The data are averaged over 24 second intervals on 12 second centers. Each averaging interval contains both the minimum amplitude, average amplitude and peak amplitude for that interval at each of the four frequencies. The four frequencies are 100 Hz, 730 Hz, 5.4 kHz, 30 kHz. The frequency filters are narrow-band, with a 30% bandwidth. Thus wave amplitudes are given in V/m/root(Hz). The filters are continuously active, but data are only provided at a rate determined by the spacecraft telemetry rate. The wave antenna is oriented perpendicular to the spacecraft spin axis, and so the wave instrument measures only wave fields in the spacecraft spin plane. The wave antenna is a small Y-shaped structure, with effective separation of 0.76 meters. Every effort has been made to assure that the data included on this volume are of the best quality available. However, the PDS and the Planetary Plasma Interactions (PPI) Node in particular, assume no liability for this volume or its contents. All users are encouraged to verify the "correctness" of the data prior to submitting any publications or other work based on these data. All data files are stored in the "DATA" branch of the directory tree. ============================================================================= File Formats ============================================================================= Original Binary The original data files submitted to the PDS are IGPP flatfiles. An IGPP flatfile is a collection of 2 files, each of which could be considered a table. The data file (.FFD) is a binary table of data values. The header file (.FFH) is an ASCII table which describes the data file (.FFD) and is used by the UCLA/IGPP Data Flow System (a software package). ASCII The original data were all binary and contained a non-standard time representation. No software was provided to convert these data to ASCII. PDS created ASCII versions of these files in response to user concerns regarding the ease of use of these data. The ASCII data are now provided along with the original binary data files in this dataset. Detached version 3.x PDS labels describe all files on this volume. PDS labels are identified by a ".LBL" file name extension. There is one label file for each text and data file (1 flatfile) contained on this volume and the file name prefix is the same as the file the label describes. If the dataset is stored as multiple files (as most of them are), there will be a single format file which describes the physical structure of the data. This format file is then pointed to by all of the labels. Both the label files and the format files (*.FMT) are all located in the same directories as the data they describe. ============================================================================ Software =========================================================================== There are no software provided on this volume. ============================================================================= Volume Contents and Structure ============================================================================= This section describes the volume structure and naming conventions. Below is a tree diagram of the volume, followed by a description of the directory. PVEFD_24S (root directory) | |- AAREADME.TXT Describes volume contents, organization and use | (this file) | |- ERRATA.TXT Describes known deficiencies or caveats in the data | or on this volume. | |- VOLDESC.CAT High level description of volume contents. | | |- [CATALOG] Information on the data set and how it was processed | and produced. Also contains information regarding | Pinoeer Venus Orbiter, the instrument covered by this | volume, personnel involved, and references from various | documents including those contained in the /CATALOG | and /DOCUMENT directories. | |- [DATA] Original binary and ASCII data from the EFD instrument | |- [DOCUMENT] Contains documents that will be useful when analyzing | data. | |- [INDEX] Contains a table of contents for all files located on this volume ============================================================================= Errata ============================================================================= Every effort has been made to assure that the data and documentation are of the best possible quality. However, mistakes are inevitable. The PPI Node of the PDS will maintain an online list of ERRATA where errors and updates are documented. Should any user of this product find an error on this volume, please report the error to the PPI Node so that the finding can be made public. All users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. There is a file called ERRATA.TXT found at the root level of this volume which contains a list of known deficiencies or caveats associated with data on this volume at the time that it was produced. If you find an error on this volume, please report it to the PDS Operator at the PPI Node of the PDS (contact information below). =========================================================================== Contacts =========================================================================== The person most directly responsible for the construction and release of this volume is Mr. Steven Joy. He was the PPI Node Data Administrator at the time this volume was created and understands as much about the volume structure and data organization as anyone. Other PPI personnel who may be aware of about issues related to this volume include Joe Mafi, Bill Harris, and Dr. Raymond Walker, the PDS/PPI Node manager. For questions or problems regarding this archive, please contact the PDS/PPI PDS operator: Email pds_operator@igpp.ucla.edu Telephone (310) 206-6073 U.S. Mail PDS Operator c/o Dr. Raymond Walker 3845 Slichter Hall UCLA - IGPP Los Angeles, CA 90095-1567 For questions regarding PDS Standards or other archives available from the PDS, please contact PDS Operator at the PDS Central Node (at JPL): Email pds_operator@jpl.nasa.gov Telephone (818) 354-4321 U.S. Mail Planetary Data System, PDS Operator Jet Propulsion Laboratory Mail Stop 202-101 4800 Oak Grove Dr. Pasadena, CA 91109-8099 The PDS and the Planetary Plasma Interactions (PPI) Node in particular, assume no legal liability for errors on this volume. All users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. Errors on this volume should be reported back to the PPI Node of the PDS through the ERRATA reporting procedures described above.