Results for: time ireland
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General physics
Geographical location
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)
Ireland, NSAI NML (NSAI National Metrology Laboratory)
Frequency , Frequency : 10 Hz to 99 Hz
General frequency source
Absolute expanded uncertainty : 1.8E1 µHz to 6 µHz
Frequency counter
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : NSAI NML/4
Frequency , Frequency : 10 MHz
Local frequency standard
Relative expanded uncertainty : 5.0E-13 Hz/Hz
Phase difference measurement
Averaging time : 1 day
Comparison made with NPL standard using CV method
Approved on 02 May 2006
Institute service identifier : NSAI NML/1
Frequency , Frequency : 1 MHz
General frequency source
Relative expanded uncertainty : 1.0E-11 Hz/Hz
Frequency counter
Averaging time : 1 day
Approved on 02 May 2006
Institute service identifier : NSAI NML/3
Frequency , Frequency : 0.01 MHz to 1000 MHz
General frequency source
Relative expanded uncertainty : 1.0E-10 Hz/Hz to 3.0E-11 Hz/Hz
Frequency counter
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : NSAI NML/7
Frequency , Frequency : 100 Hz to 999 Hz
General frequency source
Absolute expanded uncertainty : 6 µHz to 2 µHz
Frequency counter
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : NSAI NML/5
Frequency , Frequency : 5 MHz
Local frequency standard
Relative expanded uncertainty : 5.0E-13 Hz/Hz
Phase difference measurement
Averaging time : 1 day
Comparison made with NPL standard using CV method
Approved on 02 May 2006
Institute service identifier : NSAI NML/2
Frequency , Frequency : 1000 Hz to 9999 Hz
General frequency source
Absolute expanded uncertainty : 2 µHz to 1 µHz
Frequency counter
Averaging time : 1000 s
Approved on 02 May 2006
Institute service identifier : NSAI NML/6

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