EN 60094-4:1994/A1:1994
(Amendment)Magnetic tape sound recording and reproducing systems - Part 4: Mechanical magnetic tape properties
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
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Standards Content (Sample)
SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME CEI
INTERNATIONALE IEC
94-4
INTERNATIONAL
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
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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.
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
...
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