Parallel Binary and Parallel Coded Decimal Time Code Formats.
Abstract
The need for time-of-year information with millisecond, microsecond and nanosecond resolution by data handling and instrumentation timing systems makes the use of parallel time codes highly desirable for correlation of data with time. The intent of this document is to provide ground rules for maximum compatability between present and future time generating equipment and the user interface (spaceborne and ground systems). All timing equipment for new installations where parallel time is required shall follow this standard. For those ranges and facilities where large investment in parallel time generating equipment has already been made, the changeover to the new standard parallel time codes can be made over a period of years as equipment is replaced or as new equipment is installed to meet timing requirements. The designations or nomenclatures for the codes in this standard were selected so as to minimize the impact on existing documentation and to conform to what has become standard notation. This standard should be adhered to even though use of the parallel time codes may be limited initially to the selection of one code or even particular portions of a code because of a lack of equipment to generate the complete code.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1987
- Accession Number
- ADA190126