BS 5084-4:1988

National foreword
Committees responsible
Specification
1. Scope and field of application
2. References
3. Definitions
4. Tape and record/reproducer characteristics
5. Modes of recording
6. Modulation patterns
Annexes
A. Recommended procedures for testing recorder/
    reproducer systems
B. Magnetic tape recorder/reproducer information
    and use criteria
C. Additional notes for the testing of magnetic
    tape recorder/reproducers
D. PCM standards - Additional information and
    recommendations
E. Use criteria for frequency division multiplexing
Tables
1. Standard tape widths
2. Standard tape speeds
3. Dimensions - Recorded tape format, 4 tracks in line
    on 6,3 mm (1/4 in) wide tape
4. Dimensions - Recorded tape format, 7 tracks inter-
    laced on 6,3 mm (1/4 in) wide tape
5. Dimensions - Recorded tape format, 7 tracks inter-
    laced on 12,7 mm (1/2 in) wide tape
6. Dimensions - Recorded tape format, 14 tracks inter-
    laced on 12,7 mm (1/2 in) wide tape
7. Dimensions - Recorded tape format, 21 tracks inter-
    laced on 12,7 mm (1/2 in) wide tape
8. Dimensions - Recorded tape format, 14 tracks inter-
    laced on 25,4 mm (1 in) wide tape
9. Dimensions - Recorded tape format, 28 tracks inter-
    laced on 25,4 mm (1 in) wide tape
10. Dimensions - Recorded tape format, 42 tracks inter-
    laced on 25,4 mm (1 in) wide tracks
11. Dimensions - recorded tape format, 84 tracks inter-
    laced on 50,8 mm (2 in) wide tape
12. Direct-record parameters
13. Single-carrier FM record parameters
14. Predetection carrier parameters
15. Constant-amplitude speed-control signals
16. Reference signal usage with multiple-carrier FM sub-
    carriers
17. Allocation of tracks for tape-speed correction and
    flutter compensation signals
18. Proportional-bandwidth FM subcarrier channels
19. Constant-bandwidth FM subcarrier channels
20. Receiver intermediate frequency bandwidths (3dB)
21. Flutter band-pass filter characteristics
22. Test oscillator frequencies for ITDE, TBE and
    Jitter tests
23. Test equipment requirements for direct recording
24. Intermodulation test frequencies
25. Group delay measurements
26. Speed test record frequency
27. Examples of PCM synchronization patterns
Figures
1. PCM definitions
2. Time-division multiplexing definitions (PAM and PCM)
3. Head mechanical parameters
4. Heads interlaced, n-track system
5. Recorded tape format
6. Fifty percent duty factor PAM with amplitude
    synchronization
7. One-hundred percent duty factor PAM with amplitude
    synchronization
8. Typical waveform obtained from head polarity test
9. Speed test-tape preparation
10. Tape speed - Method 1
11. Flutter test
12. Block diagram, level detector for digitized flutter
    measurement
13. ITDE measurement
14. TBE measurement
15. Jitter measurement
16. Frequency response and signal-to-noise ratio
17. Intermodulation distortion test
18. Group delay variation test for wideband recorders
19. Waveform parameters for transient response
    measurement
20. DC linearity curves
21. PCM simulator test method (real time)
22. Pseudo-noise (PN) autocorrelation method
23. PCM simulator method (post time)
24. Optimum theoretical performance for bit error
    rate versus normalized signal-to-noise ratio
25. Non-coherent pseudo-noise (PN) - PCM synchronizer
26. Power spectra for random PCM
27. Spectrum of NRZ-pseudo-noise (PN) sequence of
    length 7 bits
28. Equipment configuration for control range(s) test(s)
29. Equipment configuration for linearity measurement,
    method no.1
30. Equipment configuration for linearity measurement,
    method no.2
31. Equipment configuration for amplitude modulation
    test
32. Equipment configuration for output distortion test
33. Equipment configuration for source impedance test
34. Equipment configuration for input grounding test
35. Equipment configuration for output loading test
36. Equipment configuration for modulation feedthrough
    test
37. Equipment configuration for stability versus time
    test
38. Equipment configuration for supply voltage variation
    and ripple tests
39. Equipment configuration for common-mode rejection
    test
40. Effect of record head gap length on frequency
    response (wideband 1,5 HMzDR)
41. Equipment configuration for flutter spectrum
    measurement
42. Bit error probability as a function of untracked
    Gaussian time base error
43. Approximate phase error transfer function
44. Measured time base error spectrum
45. Typical 7-track configuration for actual tape speed
    measurement
46. Equipment configuration for frequency response
    measurement
47. Equipment configuration for NPR test

Specifies the tape and recorder/reproducer characteristics and modes of recording to enable users of different systems to interchange information recorded on instrumentation magnetic tape.