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  • Phase noise and adev of the wr switch using different tcvcxos

Phase noise and adev of the wr switch using different tcvcxos

Last edited by Erik van der Bij Jan 23, 2018
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Phase noise and ADEV of the WR Switch using different TCVCXOs

This page is a summary of the results of Allan Deviation and Phase noise measurements done using a modified Grand Master (described in White Rabbit Switch performance in Grandmaster mode, second half of the document). The reference clock is provided through a WRS-SMA-clock-board.

The following table shows the phase noise perfomance of some VCTCXO taken into account.

| VCTCXO| * Phase noise @ 1Hz | Phase noise @ 10Hz | Power supply compatible | Footprint compatible | Availabe on stores *|
| VM53S3 (currently installed) | -31 dBc/Hz (ref. 10MHz) | -86 dBc/Hz (ref. 10MHz) | YES 3.0V | YES (5x3.2mm) | YES Radiospare |
| Vectron VT-803 | -70 dBc/Hz (ref. 10MHz) | -99 dBc/Hz (ref. 10MHz) | YES (customizable) |
YES | NO (contact Vectron) |
| CFPT-9301 | -77 dBc/Hz (ref. 10MHz) | 97 dBc/Hz (ref. 10MHz) | 3.3V +/ 10% | YES | YES Farnell |
| Rakon RFPT400 | -70 dBc/Hz (ref. 10MHz) | -106 dBc/Hz (ref. 10MHz) | NO (3.3V) | YES | NO (contact Rakon) |
| Rakon RPT5032N | -74 dBc/Hz (ref. 10MHz) | -103 dBc/Hz (ref. 10MHz) | YES (customizable) | YES | NO (contact Rakon) |

Tests show that you need to cover them (with silicone resin or a plastic cage) due to high sensitivity to airflow.


12 April 2017

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