SSI Raw Experiment Data Record (REDR) for Phase 2 - USGS PDS ...

Solid State Imaging Raw Experiment Data Record Software Interface Specification
2–1
2 INTERFACE CHARACTERISTICS
2.1 Hardware Characteristics and Limitations
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2.1.1 Special Equipment and Device Interfaces
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2.1.2 Special Setup Requirements
A premastered Write Once Compact disk (CDWO) will be generated and sent to
a vendor for REDR CD-ROM disc mass production.
Blemish correction is optionally available for the REDR. If blemish correction
is desired, access to the SSI blemish calibration files is necessary.
2.2 Volume and Size
Each REDR file contains a telemetry header record followed by zero or more
bad-data value header records (Appendix E), followed by 800 line records, each
containing one line of image data.
The length of the REDR line record is independent of the telemetry mode -- all
have 1000 bytes. Each line record contains 200 bytes of binary data and 800
bytes of pixel data.
For summation mode (telemetry modes HIS and AI8), the line record is still
1000 bytes . Only the first 400 samples and the first 400 lines of the pixel area
are used to store valid image data.
For other modes, see Table 4-4 for the expected number of lines and samples of
the data.
2.3 Interface Medium Characteristics
The REDR pixel data and binary headers shall be written in VAX compatible
(least significant byte first) format. For users running on hosts other than a
VAX, all VICAR programs are capable of converting the pixel data into the
current host’s format automatically. The binary headers are also converted as
needed by the MIPS VICAR programs. Any local VICAR programs must check
the header format and convert the data format as necessary. Information about