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BS EN 61118:1994

Current

Current

The latest, up-to-date edition.

Specification for helical-scan video tape cassette system using 12,65 mm (0,5 in) magnetic tape. Type M2

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-01-1994

€348.24
Excluding VAT

Cooperating organizations
National foreword
Foreword
Section 1: General
1.1 Scope
1.2 Normative references
1.3 Environment and test conditions
1.3.1 Environment
1.3.2 Reference tape
1.3.3 Calibration tape
Section 2: Video tape cassette
2.1 Mechanical parameters
2.1.1 Cassette type
2.1.2 Dimensions of cassettes
2.1.3 Cassette dimension datum system
2.1.4 Window and label-pasting faces
2.1.5 Identification holes
2.1.6 Dimensions of reels
2.1.7 Tape windings
2.1.8 Unlocking of lid
2.1.9 Opening of lid
2.1.10 Releasing of reel brake
2.1.11 Automatic stop
Section 3: Video cassette recorders
3.1 Definitions
3.1.1 Scanner
3.1.2 Drum
3.1.3 Upper drum
3.1.4 Lower drum
3.1.5 Effective drum diameter
3.1.6 Helix angle
3.1.7 Track angle
3.2 Drum diameter and structure
3.2.1 Actual upper drum diameter
3.2.2 Actual lower drum diameter
3.2.3 Upper drum section
3.3 Scanner pole tips
3.3.1 Pole tip projection
3.3.2 Pole tips
3.3.3 Chordal distance between luminance and chrominance
        pole tips
3.3.4 Axial distance between luminance and chrominance
        pole tips
3.3.5 Channel identification
3.4 Helix angle
3.5 Dimensions and location of records
3.5.1 Test environment
3.5.2 Tape speed
3.5.3 Record locations and dimensions
3.5.4 Video record curvature
3.5.5 Gap azimuth
3.6 Recording characteristics
Section 4: Tape characteristics
4.1 Dimensions of video tape
4.1.1 Magnetic tape thickness
4.1.2 Magnetic tape width
4.2 Magnetic tape properties
4.2.1 Type of magnetic tape
4.2.2 Magnetic orientation
4.2.3 Coercivity
4.3 Leader tape and trailer tape
4.3.1 Automatic stop
4.3.2 Dimensions of leader and trailer tape
4.3.3 Splicing
Section 5: Recording characteristics
5.1 Video signal recording
5.1.1 Luminance channel
5.1.2 Chrominance channel
5.1.3 Y-C timing
5.1.4 Vertical interval subcarrier (VISC)
5.2 Longitudinal audio signal recording
5.2.1 Recording method
5.2.2 Recording/Reproducing reference levels
5.2.3 Frequency characteristics
5.2.4 Track usage (common audio mode)
5.2.5 Program audio head phasing
5.2.6 Recording polarity
5.3 FM audio signal recording (optional)
5.3.1 Recording/Reproducing reference levels
5.3.2 Noise reduction
5.3.3 Pre-emphasis
5.3.4 Frequency modulation
5.3.5 Recording head current
5.3.6 Recording polarity
5.4 Time and control code signal recording
5.4.1 Time and control code
5.4.2 Recording track
5.4.3 Recording method
5.4.4 Recording level
5.5 Tracking control signal recording
5.5.1 Recording track
5.5.2 Recording waveform and level
5.5.3 Polarity of remanent magnetization
5.5.4 Timing and period
5.5.5 Colour framing information
5.5.6 Magnetization level
5.5.7 Rise time
5.6 PCM audio recording (PCM audio mode)
5.6.1 Source coding
5.6.2 Signal processing
Figures
Annexes
A. (informative) Reference tape
ZA. (normative) Other international publications
      quoted in this standard with the references of the
      relevant European publications
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Dimensions and other characteristics of equipment to ensure interchangeability of recorded cassettes and requirements for common mode and pulse code modulation audio recording modes for 525 line 60 field and 625 line 50 field systems.

Committee
EPL/100
DevelopmentNote
Supersedes 89/25033 DC. Also numbered as IEC 61118. (09/2005)
DocumentType
Standard
Pages
80
PublisherName
British Standards Institution
Status
Current

Standards Relationship
DIN EN 61118:1994-05 Identical
NBN EN 61118 : 1994 Identical
EN 61118:1993 Identical
SN EN 61118 : 1993 Identical
I.S. EN 61118:1994 Identical
UNE-EN 61118:1997 Identical
NF EN 61118 : 1994 Identical

BS 7868:1996 Guide for calibration tapes for broadcast VTRs

BS EN 60094-1:1994 Magnetic tape sound recording and reproducing systems Specification for general conditions and requirements
BS 6865:1987 Specification for time and control codes for video tape recorders

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