Accession Number:

ADB057517

Title:

Serial High Density Digital Recording Using a Wideband Analog IRIG Recorder/Reproducer.

Descriptive Note:

Technical publication,

Corporate Author:

PACIFIC MISSILE TEST CENTER POINT MUGU CA

Personal Author(s):

Report Date:

1981-05-01

Pagination or Media Count:

72.0

Abstract:

This report describes the results of a study that was conducted to determine the performance characteristics of several pulse code modulation codes for serial high density digital recording using wideband analog recorderreproducers. The major conclusions are 1 The standard Inter-Range Instrumentation Group IRIG conditions for analog recording with bias are also nearly optimum for serial high density digital recording HDDR with bias when a wideband IRIG recorderreproducer is used 2 The best codes for serial HDDR when wideband IRIG analog recorderreproducers are used are BIPhi-L and RNRZ-L. The maximum reliable bit packing density for BIPhi-L is 15 kbin. The maximum reliable bit packing density for RNRZ-L is 25 kbin. The minimum reliable reproduce bit rate for RNRZ-L is 200 kbs. Fifteen appears to be a good choice of shift register length for the RNRZ-L randomizer and 3 Bit error rates of 0.000001 or better are easily achieved when good quality wideband instrumentation tape, 50-mil track widths, and the maximum recommended bit packing densities are used. The 1980 edition of the Telemetry Standards Range Commanders Council IRIG Document 106-80 included Serial HDDR Standards based on these conditions. Author

Subject Categories:

  • Recording and Playback Devices
  • Guided Missile Launching and Basing Support
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE