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Reference EN 60444-1:1997
Title Measurement of quartz crystal unit parameters by zero phase technique in a pi-network - Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a pi-network
Project Number 6937
Abstract/Scope Specifies a simple method of measurement of resonance frequency and resonance resistance of quartz crystal units and describes a suitable measuring network for use over the frequency range 1 MHz to 200 MHz.


Current Stage code 6060
Current Stage code date 1997-04-16
Current Stage code deadline 1997-12-01
Deadline date for vote  


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IEC Technical Body IEC/TC 49
Reference Document IEC 60444-1:1986 (EQV)
ICS 31.140 - Piezoelectric and dielectric devices
Keywords Quartz crystal unit; Pi-network; Resonance frequency; Resonance resistance
Note D114/118: CLC/TC 49 disbanded
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1997-04-16 1997-12-01 export to doc file  EN
5099 1997-03-11 1997-04-11  
5062 1997-01-27 1997-03-11  
5020 1996-07-30 1996-10-31  
1599 1996-03-05 1996-09-05  
1562 1996-01-25 1996-03-05  
1520 1995-08-10 1995-11-15  
1099 1995-07-04 1995-08-04  

Implementation Dates

date of Ratification (DOR) (1) 1997-03-11
date of Availability (DAV) (2) 1997-04-16
date of Announcement (DOA) (3) 1997-06-01
date of Publication (DOP) (4) 1997-12-01
date of Withdrawal (DOW) (5) 1997-12-01


Superseded by  
Normative reference (6)  

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of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn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