IEC 61676:2002/AMD1:2008

IEC 61676
Edition 1.0 2008-11
INTERNATIONAL
STANDARD
AMENDMENT 1
Medical electrical equipment – Dosimetric instruments used for non-invasive
measurement of X-ray tube voltage in diagnostic radiology

IEC 61676:2002/A1:2008(E)
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IEC 61676
Edition 1.0 2008-11
INTERNATIONAL
STANDARD
AMENDMENT 1
Medical electrical equipment – Dosimetric instruments used for non-invasive
measurement of X-ray tube voltage in diagnostic radiology

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
D
ICS 11.040.50; 11.040.55 ISBN 978-2-88910-551-9
– 2 – 61676 Amend. 1 © IEC:2008
FOREWORD
This amendment has been prepared by subcommittee 62C, Equipment for radiotherapy,
nuclear medicine and radiation dosimetry, of IEC technical committee 62, Electrical equipment
in medical practice.
The text of this amendment is based on the following documents:
Enquiry draft Report on voting
62C/445/CDV 62C/452/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
NOTE In this amendment, a new influence quantity “Additional tungsten filtration (tube aging)” has been
introduced.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
______________
4.3.5 Limits of variation
Replace the existing Table 2 by the following:

61676 Amend. 1 © IEC:2008 – 3 –
Table 2 – Minimum RATED RANGE OF USE, REFERENCE CONDITIONS, STANDARD TEST CONDITIONS,
LIMITS OF VARIATION (± L) and INTRINSIC ERROR (E) over the EFFECTIVE RANGE of use, for the
pertaining INFLUENCE QUANTITY
INFLUENCE Minimum RATED RANGE of REFERENCE STANDARD TEST ± E ± L Sub-
QUANTITY use CONDITIONS CONDITIONS kV % clause
Voltage waveform
and frequency:
Diagnostic  2,0
Constant potential,
Constant Constant potential, ripple
2-, 6-, 12-pulse and medium
4.4.2
potential less than 4 %
frequency
a
...