Digital Equipment Susceptibility.
Abstract
Major work during this quarter has been the testing of the PCM-FM receiver-demodulator, evaluation of test results, consideration of worst case electromagnetic fields encountered in typical field deployment, and appraisal of specific test procedures and instrumentation within the confinement of MIL-STD-461 and MIL-STD-462. The rationale for recommending a specific set of interference structure and interference injection points combines results and recommendations of previous quarters' activities with the real time required for susceptibility testing of the simulation. The susceptibility test results of the PCM-FM receiver-demodulator are included along with preliminary appraisal. There were no unique susceptibility functions of the PCM-FM receiver; polarity reversals of the baseband data signal during the center of the sampling interval represented the major cause of error production. Instantaneous peak jitter in excess of approximately 70 degrees consistently produced errors. Average jitter was less consistent. Interference test results were well aligned to predictions from previous analyses. Comparison of specifications in MIL-STD-461 and MIL-STD-462 with field levels, calculated from a typical field deployment, indicate some possible suggestions for modification in the areas of like interference structures and pulsed radar interference testing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1972
- Accession Number
- AD0894891
Entities
People
- Denmer Dix Baxter
- James F. Lecain
- Jay L. Wilson
Organizations
- Martin Marietta