BS EN 61237-4:1998
Current
The latest, up-to-date edition.
Broadcast video tape recorders. Methods of measurement Analogue audio performance measurements
Hardcopy , PDF
English
15-02-1998
1 General
1.1 Scope and object
1.2 Normative references
1.3 Definitions
2 Manual and automatic measurements
3 Procedure of measurement
4 Environmental conditions
5 Measurements on analogue audio baseband recording
using bias
5.1 Reproducing performance using calibration tape
5.2 Overall performance using reference tape
6 Measurement on analogue audio recording using
frequency modulation (FM audio)
6.1 Reproducing performance using calibration tape
6.2 Overall performance using reference tape
7 Special measurements
7.1 Measurements on FM carrier (unmodulated carrier
and deviation)
7.2 Measurements on AGC (amplitude characteristic;
attack time; hold time)
7.3 Measurements on switchable noise reduction circuits
7.4 Measurements on non-switchable noise reduction
systems (in combination with a non-switchable AGC)
7.5 Polarity test
Annexes
A Method of measurement for magnetic tape flux
B Bibliography
ZA (normative) Normative references to international
publications with their corresponding European publications
Describes methods of measurement and test signals for the analogue audio part of equipment for recording/reproduction of TV signals on magnetic tape reels or cassettes.
| Committee |
EPL/48
|
| DevelopmentNote |
Also numbered as IEC 61237-4 Supersedes 93/216468 DC (11/2005)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NBN EN 61237-4 : 1998 | Identical |
| EN 61237-4:1997 | Identical |
| DIN EN 61237-4:1998-07 | Identical |
| I.S. EN 61237-4:1998 | Identical |
| NF EN 61237-4 : 1998 | Identical |
| IEC 60268-8:1973 | Sound system equipment - Part 8: Automatic gain control devices |
| HD 483.3 : 200S2 | SOUND SYSTEM EQUIPMENT - AMPLIFIERS |
| EN 61041-3:1995 | Non-broadcast videotape recorders - Methods of measurement - Part 3: Audio characteristics for FM recording |
| IEC 60268-3:2013 | Sound system equipment - Part 3: Amplifiers |
| ANSI S4.6 : 82(R1992) | RECORDED FLUX OF MAGNETIC SOUND RECORDS AT MEDIUM WAVELENGTHS, METHOD OF MEASURING |
| HD 574 : 1990 | TYPE B HELICAL VIDEO RECORDERS |
| EN 60094-3:1996/A3:1996 | MAGNETIC TAPE SOUND RECORDING AND REPRODUCING SYSTEMS - PART 3: METHODS OF MEASURING THE CHARACTERISTICS OF RECORDING AND REPRODUCING EQUIPMENT FOR SOUND ON MAGNETIC TAPE |
| EN 61105:1993 | Reference tapes for video tape recorder systems |
| EN 61041-1:1995 | Non-broadcast video tape recorders - Methods of measurement - Part 1: General video (NTSC/PAL) and audio (longitudinal) characteristics |
| IEC TR 61295:1994 | Calibration tapes for broadcast VTRs |
| IEC 61213:1993 | Analogue audio recording on video tape - Polarity of magnetization |
| IEC 61041-3:1993 | Non-broadcast video tape recorders - Methods of measurement - Part 3: Audio characteristics for FM recording |
| IEC 60094-2:1994 | Magnetic tape sound recording and reproducing systems - Part 2: Calibration tapes |
| IEC 61105:1991 | Reference tapes for video tape recorder systems |
| HD 483.1 : 200S2 | SOUND SYSTEM EQUIPMENT - GENERAL |
| IEC 60268-1:1985 | Sound system equipment. Part 1: General |
| EN 61213:1994 | Analogue audio recording on video tape - Polarity of magnetization |
| IEC 60094-3:1979 | Magnetic tape sound recording and reproducing systems - Part 3: Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape |
| EN 60651:1994/A2:2001 | SOUND LEVEL METERS (IEC 60651:1979/A2:2000) |
| IEC 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| DIN 45520:1973-01 | MAGNETIC TAPE RECORDERS - MEASUREMENT OF THE ABSOLUTE LEVEL OF THE MAGNETIC FLUX AND ITS FREQUENCY RESPONSE ON MAGNETIC TAPES |
| HD 483.2 : 200S2 | SOUND SYSTEM EQUIPMENT - EXPLANATION OF GENERAL TERMS AND CALCULATION METHODS |
| EN 61260:1995/A1:2001 | ELECTROACOUSTICS - OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS |
| IEC 60651:1979+AMD1:1993+AMD2:2000 CSV | Sound level meters |
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