PDS_VERSION_ID         = PDS3 

RECORD_TYPE            = STREAM
INSTRUMENT_HOST_NAME   = "PHOENIX"
INSTRUMENT_NAME        = {"MECA ATOMIC FORCE MICROSCOPE",
                          "MECA COMMON ELECTRONICS",
                          "MECA THERMAL AND ELECTRICAL CONDUCTIVITY PROBE",
                          "MECA WET CHEMISTRY LABORATORY"}
TARGET_NAME            = MARS
OBJECT                 = TEXT
  PUBLICATION_DATE     = 2000-04-29
  NOTE                 = "Introduction to Phoenix MECA Non-Imaging EDR Data" 
END_OBJECT             = TEXT
END 
                                                
PHOENIX MICROSCOPY, ELECTROCHEMISTRY AND CONDUCTIVITY ANALYZER (MECA)
NON-IMAGING EXPERIMENT DATA RECORDS (EDR) ARCHIVE

Introduction
------------

The Phoenix Microscopy, Electrochemistry and Conductivity Analyzer (MECA)
instrument suite includes four instruments:

1. Atomic Force Microscope (AFM)
2. Optical Microscope (OM)
3. Thermal and Electrical Conductivity Probe (TECP)
4. Wet Chemistry Laboratory (WCL).

The AFM, TECP, and WCL are known collectively as the MECA Non-Imaging 
Instruments. This archive contains the raw data products from these
instruments. The raw data products from the OM are in a separate archive
(data set ID PHX-M-OM-2-EDR-V1.0, archive volume PHXOM_0XXX).

Information about the MECA Non-Imaging EDR products can be found in the 
MECA Non-Imaging EDR Software Interface Specification (SIS) in the DOCUMENT
directory of this archive. Information about the structure and contents 
of the archive can be found in the Archive Volume SIS in the DOCUMENT 
directory.

File Formats
------------
The MECA Non-Imaging EDR data products are stored as binary tables with 
attached PDS labels. The labels contain identification and observation 
parameters associated with the data files, along with a description of
the structure of the binary data. In some cases, the PDS label includes a 
pointer to a format file that contains column definitions (extension ".FMT"). 
These format files are found in the LABEL directory.

Volume Contents
---------------

The MECA Non-Imaging EDR archive volume includes the following files and 
directories.

Root directory
  AAREADME.TXT - the file you are reading
  ERRATA.TXT   - notes and errata, if any
  VOLDESC.CAT  - volume description for the PDS catalog

CALIBRATION directory
  CALINFO.TXT - description of contents of this directory
  MECA_MICROSCOPY_CAL_REPORT.PDF - Microscopy calibration report in PDF
  MECA_MICROSCOPY_CAL_REPORT.LBL - PDS label for both files
  MECA_TECP_CAL_REPORT.PDF - TECP calibration report in PDF
  MECA_TECP_CAL_REPORT.LBL - PDS label for both files
  MECA_WCL_CAL_REPORT.PDF - WCL calibration report in PDF
  MECA_WCL_CAL_REPORT.LBL - PDS label for both files

CATALOG directory
  CATINFO.TXT  - description of contents of this directory
  *.CAT        - descriptions of dataset, instrument, spacecraft,
                 mission, and personnel for the PDS catalog

DOCUMENT directory
  DOCINFO.TXT - description of contents of this directory
  
  MECA_EDR_RDR_AVSIS.HTM - Archive Volume Software Interface Specification
                           in HTML
  MECA_EDR_RDR_AVSIS.PDF - Archive Volume Software Interface Specification 
                           in Adobe PDF
  MECA_EDR_RDR_AVSIS.LBL - PDS label for both files
  MECA_EDR_RDR_AVSIS_FILES - Subdirectory containing images used in HTML file

  
  MECA_EDR_SIS.HTM - MECA Non-Imaging EDR Software Interface Specification 
                     in HTML
  MECA_EDR_SIS.PDF - MECA Non-Imaging EDR Software Interface Specification 
                     in Adobe PDF
  MECA_EDR_SIS.LBL - PDS label for both files
  MECA_EDR_SIS_FILES - Subdirectory containing images used in HTML file

INDEX directory
  INDXINFO.TXT - description of contents of this directory
  INDEX.TAB    - index of all products in the archive
  INDEX.LBL    - PDS label that describes INDEX.TAB

LABEL directory
  LABINFO.TXT  - description of contents of this directory
  *.FMT        - format files referenced in PDS labels

SOFTWARE directory
  SOFTINFO.TXT - information about available software to use with MECA data
  
Data directories
  Data are divided into directories by sol (Martian day) number.


Contacts
--------

For questions concerning these data products and documentation, contact:

          PDS Geosciences Node
          Washington University
          Dept. of Earth and Planetary Sciences
          1 Brookings Drive
          St. Louis, MO 63130
          314-935-5493

          WWW Site:  http://pds-geosciences.wustl.edu
          Electronic mail address:  geosci@wunder.wustl.edu