News
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.
MasterFIP
Order of 130 masterFIP v4
After having validated the design (through 15 v3) we are now ready to produce 130 v4 masterFIP boards! The plan is to install them in machines in LHC operation before the end of this year.
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 - Software
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.
1-to-8 Pulse and Frequency Distribution Amplifier
S/N005 assembled and tested
Amplifier S/N 005 was assembled and tested, housing PDA2017.07 and FDA2017.07 boards. Initial phase-noise tests show good performance, similar to the previous generation of the board. The new PDA2017.07 design using IDT5PB1108 has very fast rise-time (to be measured), possibly a quite low output-impedance (to be fixed?
1-to-8 Pulse and Frequency Distribution Amplifier
Project created on ohwr.org
The project was created on ohwr.org in August 2017.