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| | | Mexico, CENAM (Centro Nacional de Metrologia) | | | Complete CMCs in Time and Frequency for Mexico (.PDF file)
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| Frequency. Standard frequency source, 5 MHz | | Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 1.0E-13 | | Local frequency standard | | Averaging time: 2 days | | Approved on 25 February 2009 |
| | | Frequency. Standard frequency source, 10 MHz | | Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 1.0E-13 | | Local frequency standard | | Averaging time: 2 days | | Approved on 25 February 2009 |
| | | Frequency. Standard frequency source, 5 MHz | | Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 5.0E-13 | | Remote frequency standard | | Averaging time: 1 day | | GPS common-view comparison using multichannel GPS receiver
Approved on 25 February 2009 |
| | | Frequency. General frequency source, 1 MHz to 100 MHz | | Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13 | | Direct frequency measurement | | Averaging time: 2 days | | Approved on 25 February 2009 |
| | | Frequency. Frequency counter, 1 MHz to 100 MHz | | Relative expanded uncertainty (k = 2, level of confidence 95%) in Hz/Hz: 2.0E-13 | | Direct frequency measurement | | Averaging time: 2 days | | Approved on 25 February 2009 |
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