EN 60094-4:1994/A1:1994

Magnetic tape sound recording and reproducing systems - Part 4: Mechanical magnetic tape properties

EN following parallel vote

Systeme für Tonaufzeichnung und -wiedergabe auf Magnetband - Teil 4: Mechanische Eigenschaften von Magnetbändern

Systèmes d'enregistrement et de lecture du son sur bandes magnétiques - Partie 4: Propriétés mécaniques des bandes magnétiques

Magnetic tape sound recording and reproducing systems -- Part 4: Mechanical magnetic tape properties -Amendment A1 (IEC 60094-4:1986/A1:1994)

General Information

• Status: Published
• Publication Date: 25-Aug-1994
• Withdrawal Date: 30-Jun-1995
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Parallel Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 26-Aug-1994
• Completion Date: 26-Aug-1994
• Ref Project: SIST EN 60094-4:1999/A1:1999 - Magnetic tape sound recording and reproducing systems -- Part 4: Mechanical magnetic tape properties

Relations

• Amends: EN 60094-4:1994 - Magnetic tape sound recording and reproducing systems - Part 4: Mechanical magnetic tape properties
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60094-4:1999/A1:1999
01-april-1999
Magnetic tape sound recording and reproducing systems -- Part 4: Mechanical
magnetic tape properties -Amendment A1 (IEC 60094-4:1986/A1:1994)
Magnetic tape sound recording and reproducing systems -- Part 4: Mechanical magnetic
tape properties
Systeme für Tonaufzeichnung und -wiedergabe auf Magnetband -- Teil 4: Mechanische
Eigenschaften von Magnetbändern
Systèmes d'enregistrement et de lecture du son sur bandes magnétiques -- Partie 4:
Propriétés mécaniques des bandes magnétiques
Ta slovenski standard je istoveten z: EN 60094-4:1994/A1:1994
ICS:
33.160.30 Avdio sistemi Audio systems
SIST EN 60094-4:1999/A1:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60094-4:1999/A1:1999

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SIST EN 60094-4:1999/A1:1999

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SIST EN 60094-4:1999/A1:1999

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SIST EN 60094-4:1999/A1:1999
NORME CEI
INTERNATIONALE IEC
94-4
INTERNATIONAL
1986
STANDARD
AMENDEMENT 1
AMENDMENT 1
1994-07
Amendement 1
Systèmes d'enregistrement et de lecture du son
sur bandes magnétiques
Partie 4:
Propriétés mécaniques des bandes magnétiques
Amendment 1
Magnetic tape sound recording and
reproducing systems
Part 4:
Mechanical magnetic tape properties
Droits de reproduction réservés — Copyright — all rights reserved
© CEI 1994
Suisse
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève,
CODE PRIX Commission Electrotechnique Internationale
D
International Electrotechnical Commission PRICE CODE
IEC MetsiavHapoaHas 3neeTpoTexuwiecnae tionnMCCHA
Pour prix, voir catalogue en vigueur
• •
For price, see current catalogue

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SIST EN 60094-4:1999/A1:1999
94-4 Amend. 1 © IEC – 3 –
FOREWORD
This amendment has been prepared by sub-committee 60A: Sound recording, of IEC
technical committee 60: Recording
The text of this amendment is based on the following documents:
DIS
Report on Voting
60A(CO)155 60A(C0)162
Full information on the voting for the approval of this amendment can be found in the
voting report indicated in the above table.
Page 15
5.4 Transverse cupping (for professional tapes only)
Replace the existing subclause by the following new subclause:
(optional)
5.4 Transverse cupping
Definitions
Transverse cupping is a continuous, transverse curvature (convex or concave), across the
full tape width.
It shall be measured as the radius of the curvature in the transverse direction of the tape
sample.
Method A
A tape sample of 30 cm in length is freely suspended from a clamp and placed between
the measuring equipment guides with its concave side facing the rotating template as
shown in figure 3, page 23.
The template has a sector periphery of various radii and is rotated until a sector of the
same radius as the tape is found.
A lamp is fitted to facilitate the measurement.
It is necessary to ensure that heat generated by the lamp does not influence the measurement.
Result
The radius of the tape curvature is derived from the relevant template sector and is
expressed in millimetres.

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SIST EN 60094-4:1999/A1:1999
94-4 Amend. 1 © IEC – 5 –
Method B
For optical measurements the following principle may be applied:
The transversely cupped tape is regarded as a cylindrical concave mirror. It is illuminated
by a tubular lamp. The filament will concide with it
...