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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Czechia, IPE/ASCR (Institute of Photonics and Electronics, Czech Academy of Sciences)
Time interval ,
Time interval
:
0 s to 1 s
Time difference source
Absolute expanded uncertainty
:
0.1 ns
Time difference meter
Slewing rate : > 0.5 V/ns
Approved on 02 May 2006
Institute service identifier : IPE/17
CMC ID :
EURAMET-TF-CZ-00000B4I-1
Time interval ,
Time interval
:
1 s
Time difference meter
Absolute expanded uncertainty
:
0.1 ns
Time difference source
Slewing rate : > 0.5 V/ns
Approved on 02 May 2006
Institute service identifier : IPE/19
CMC ID :
EURAMET-TF-CZ-00000B4J-1
Frequency ,
Frequency
:
10 MHz
Frequency counter
Relative expanded uncertainty
:
9.0E-12 Hz/Hz
Frequency source
Averaging time : 1 s
Approved on 02 May 2006
Institute service identifier : IPE/15
CMC ID :
EURAMET-TF-CZ-00000B4S-1
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Local clock vs UTC
Absolute expanded uncertainty
:
1.0E1 ns
Comparison against post-processed UTC
Slewing rate : > 0.5 V/ns
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/3
CMC ID :
EURAMET-TF-CZ-00000B4E-1
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Local clock vs UTC
Absolute expanded uncertainty
:
4.0E1 ns
Comparison against predicted UTC
Prediction time : 20 days
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/2
CMC ID :
EURAMET-TF-CZ-00000B4D-1
Frequency ,
Frequency
:
10 MHz
Local frequency standard
Relative expanded uncertainty
:
2.0E-13 Hz/Hz
Phase time difference multiplication
Averaging time : 1 s
Relative frequency difference : < 1E-11
For evaluation of frequency instability
Approved on 02 May 2006
Institute service identifier : IPE/12
CMC ID :
EURAMET-TF-CZ-00000B4P-1
Frequency ,
Frequency
:
5 MHz
Local frequency standard
Relative expanded uncertainty
:
6.0E-14 Hz/Hz
Phase time measurement
Averaging time : 1 day
Approved on 02 May 2006
Institute service identifier : IPE/7
CMC ID :
EURAMET-TF-CZ-00000B4K-1
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Remote clock vs UTC
Absolute expanded uncertainty
:
4.2E1 ns
GPS common view comparison against predicted UTC
Prediction time : 20 days
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/5
CMC ID :
EURAMET-TF-CZ-00000B4G-1
Frequency ,
Frequency
:
5 MHz
Local frequency standard
Relative expanded uncertainty
:
2.0E-13 Hz/Hz
Phase time difference multiplication
Averaging time : 1 s
Relative frequency difference : < 1E-11
For evaluation of frequency instability
Approved on 02 May 2006
Institute service identifier : IPE/11
CMC ID :
EURAMET-TF-CZ-00000B4O-1
Frequency ,
Frequency
:
10 MHz
Local frequency standard
Relative expanded uncertainty
:
6.0E-13 Hz/Hz
Phase time measurement
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : IPE/10
CMC ID :
EURAMET-TF-CZ-00000B4N-1
Frequency ,
Frequency
:
5 MHz
Local frequency standard
Relative expanded uncertainty
:
6.0E-13 Hz/Hz
Phase time measurement
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : IPE/8
CMC ID :
EURAMET-TF-CZ-00000B4L-1
Frequency ,
Frequency
:
5 MHz
Frequency counter
Relative expanded uncertainty
:
9.0E-12 Hz/Hz
Frequency source
Averaging time : 1 s
Approved on 02 May 2006
Institute service identifier : IPE/14
CMC ID :
EURAMET-TF-CZ-00000B4R-1
Frequency ,
Frequency
:
1 Hz
Remote frequency standard
Relative expanded uncertainty
:
1.0E-13 Hz/Hz
GPS common view comparison against UTC(TP) frequency
Averaging time : 1 day
Approved on 02 May 2006
Institute service identifier : IPE/13
CMC ID :
EURAMET-TF-CZ-00000B4Q-1
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Remote clock vs UTC(IPE/ASCR)
Absolute expanded uncertainty
:
1.0E1 ns
GPS common view comparison against UTC(TP)
Averaging time : 1 day
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/4
CMC ID :
EURAMET-TF-CZ-00000B4F-2
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Local clock vs UTC(IPE/ASCR)
Absolute expanded uncertainty
:
0.5 ns
Direct comparison against UTC(TP)
Slewing rate : > 0.5 V/ns
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/1
CMC ID :
EURAMET-TF-CZ-00000B4C-2
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Remote clock vs UTC
Absolute expanded uncertainty
:
1.5E1 ns
GPS common view comparison against postprocessed UTC
Averaging time : 1 day
Fractional part of modulo 1 second difference, integer part can be provided also
Approved on 02 May 2006
Institute service identifier : IPE/6
CMC ID :
EURAMET-TF-CZ-00000B4H-1
Frequency ,
Frequency
:
10 MHz
Local frequency standard
Relative expanded uncertainty
:
6.0E-14 Hz/Hz
Phase time measurement
Averaging time : 1 day
Approved on 02 May 2006
Institute service identifier : IPE/9
CMC ID :
EURAMET-TF-CZ-00000B4M-1
