2019-06 Aivon produces S/N 20 and beyond

As of June 2019 more than 20 pcs of the FDA/PDA design have been produced. So far the design is stable and performance has been sufficient for many users.

2019-01 Sync Technology - planning commercial production of PDA/FDA

added by Anders Wallin on 2019-01-04 08:10:21.937351

Sync Technology from China has plans to produce the PDA/FDA http://www.synctechnology.cn/EN_detaile.aspx?id=153

2018-12 FDA performace testing

added by Anders Wallin on 2018-12-09 18:03:20.839771

14-hour runs on FDA S/N 16 from Aivon LTD now in Aders' blog: http://www.anderswallin.net/2018/11/distribution-amp-s-n-16/
The conclusion is that it is quite hard to measure the performance of the amplifier, because the instrument noise-floor usually dominates!

2018-12 Narrow version of FDA-board

added by Anders Wallin on 2018-12-09 18:00:31.751561

Here's a modification of the FDA PCB design to fit in an enclosure that takes a 160mm wide board: http://www.anderswallin.net/2018/12/compact-frequency-distribution-amplifier/
design-files to be added here.

2018-02 Aivon LTD announces commercial availability of 1:8 PDA/FDA

added by Anders Wallin on 2018-02-15 09:45:52.290643

Aivon LTD is now commercially producing the 1:8 PDA/FDA design in a 1U 19" form-factor.

2018-02 Draft datasheet now in git-repo

added by Anders Wallin on 2018-02-15 09:42:23.503318

A draft datasheet with performance measurements is now available in the git-repository.
If you have measurement capability and interest we welcome contributions and corrections to the datasheet!

2018-01 Enclosure notes and design-files added

added by Anders Wallin on 2018-01-03 08:25:40.600183

Enclosure notes with dimensions and part numbers.
Schaeffer front-panel designer design-files for example front and back panels. Note front-panel is either for SMA or BNC connectors.

Trimmer-cap modification for output-skew tuning on PDA

added by Anders Wallin on 2017-10-21 16:34:31.701439

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/

Initial commit of KiCad designs to the git repo

added by Anders Wallin on 2017-10-21 16:18:41.017320

PDA and FDA designs including kicad schematic, pcb, BOM, and gerbers have been committed to the git repo.

S/N005 phase-noise measurement at 10 MHz

added by Anders Wallin on 2017-08-18 06:38:16.076162

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.

S/N005 assembled and tested

added by Anders Wallin on 2017-08-16 13:29:13.497624

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?) and a preliminary channel-to-channel output skew of max 250 ps.

Project created on ohwr.org

added by Anders Wallin on 2017-08-12 14:10:11.508425

The project was created on ohwr.org in August 2017.