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Reference EN 60444-6:2013
Title Measurement of quartz crystal unit parameters - Part 6: Measurement of drive level dependence (DLD)
Project Number 24360
Abstract/Scope IEC 60444-6:2013 applies to the measurements of drive level dependence (DLD) of quartz crystal units. Two test methods and one referential method are described. This edition includes the following significant technical changes with respect to the previous edition: a) DLD measurement with oscillation circuit had the traditional method to detect the DLD abnormal modes at present time. Therefore, this method made the transition to the Annex B. b) High reliability crystal unit is needed to use for various applications at the present day, in order to upgrade the inspection capabilities for DLD abnormal modes, the multi-level reference measurement method was introduced into this specification.


Current Stage code 6060
Current Stage code date 2013-10-04
Current Stage code deadline 2014-04-24
Deadline date for vote  


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IEC Technical Body IEC/TC 49
Reference Document IEC 60444-6:2013 (EQV)
ICS 31.140 - Piezoelectric and dielectric devices
Keywords Quartz crystal unit; Drive level dependence (DLD); Measurement
Note Supersedes EN 60444-6:1997
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2013-10-04 2014-04-24 export to doc file  EN  FR  DE
5099 2013-07-24 2013-08-21  
5060 2013-01-07 2013-01-28 export to doc file  EN
5020 2012-07-27 2013-01-04  
1090 2012-07-24 2012-07-27  

Implementation Dates

date of Ratification (DOR) (1) 2013-07-24
date of Availability (DAV) (2) 2013-10-04
date of Announcement (DOA) (3) 2013-10-24
date of Publication (DOP) (4) 2014-04-24
date of Withdrawal (DOW) (5) 2016-07-24


Supersedes EN 60444-6:1997
Superseded by  
Normative reference (6) EN 60444-1:1997
EN 60444-5:1997
EN 60444-8:2003

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.