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