News
White Rabbit Node
White Rabbit PTP Core v4.2 released
We have just released v4.2 of the WR PTP Core. You can find all the links to download the demo binaries and documentation on our release wiki page Here are the most important improvements and fixes of this brand new release:
WRS Low Jitter Daughterboard
WRS Low Jitter board measurement results
- Additional hardware can improve jitter by two orders of magnitude - Chantal van Tour and Jeroen Koelemeij have made new measurements of the performance of the White Rabbit switch [1] with Mattia Rizzi’s additional Low jitter daughterboard (LJD) [2] integrated and enhanced even more with another clean-up oscillator.
1-to-8 Pulse and Frequency Distribution Amplifier
Initial commit of KiCad designs to the git repo
PDA and FDA designs including kicad schematic, pcb, BOM, and gerbers have been committed to the git repo.
1-to-8 Pulse and Frequency Distribution Amplifier
Trimmer-cap modification for output-skew tuning on PDA
The pulse-distribution amplifier output skew can be tuned close to zero by the addition of a trimmer-cap on the input of the output-buffer. See initial results in Anders’ blog http://www.anderswallin.net/2017/09/delay-tuning-with-trimmer-caps/
White Rabbit
12-09-2017: PTP Trackhound smells the White Rabbit
| The software PTP Track Hound which can capture and analyze PTP network traffic now understands White Rabbit TLVs. So the Track Hound can now sniff the tracks that the White Rabbit leaves behind.
White Rabbit
29-08-2017: Geodetic station connected with WR to UTC(MIKE)
MIKES, the centre for metrology and accreditation of Finland, has connected the Metsähovi Geodetic Research Station to the official time of Finland, UTC[MIKE] Some quotes from the article Metsähovi connected to the official time of Finland:
White Rabbit Switch
WR Switch firmware v5.0.1 released
Since v5.0 was released we have found a few problems in the WR Switch software package. This new v5.0.1 release does not include new functionality but contains important hotfixes to the v5.
1-to-8 Pulse and Frequency Distribution Amplifier
S/N005 phase-noise measurement at 10 MHz
Phase-noise measurements show a flat spur-free phase-noise and AM-noise floor of -162 dBc/Hz at >100 Hz offset from a 10 MHz carrier. Measurements at 5 MHz to follow. See wiki for results.