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Ian asynchronous I2S and S/PDIF FIFO KIT group buy

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#602
andrea_mori said:
I have just received a quotation for an OCXO from HCD Research Ltd. (distributed from Golledge) with same ultra low phase noise of Vectron OCXO.
The problem is the custom frequency (typically they not produce 11.2896, 12.288 or so), then they quoted a custom part and so the price is high.
I have ordered a sample.
If anyone interested in, we could make a group buy to get lower price.

Also I'm developing a low noise power supply for this OCXO.

Andrea
Click to expand...

Count me for 1, Andrea.

hirez69
 
#604
hirez69 said:
Andrea,

please, also take into account Nelfc's OCXO:

OCXOs | Oven Controlled Crystal Oscillator

thanks

hirez69
Click to expand...

At this moment HCD is the only company that can produce small quantity OCXO. Other company I enquired do not produce small quantity or quoted higher price than HCD.

I'm also working on an alternative way, with similar performance.
I have ordered a few sample of high performance AT-Cut crystal, HC-43/U package, cold welded, high Q, polished finisher.
This crystal are a little expensive, anyway far cheaper than any OCXO, but obviously I have to design a suitable oscillator to get highest loaded Q as possible.
 
#606
andrea_mori said:
I'm also working on an alternative way, with similar performance.
I have ordered a few sample of high performance AT-Cut crystal, HC-43/U package, cold welded, high Q, polished finisher.
This crystal are a little expensive, anyway far cheaper than any OCXO, but obviously I have to design a suitable oscillator to get highest loaded Q as possible.
Click to expand...

courageous 🙂 like iancanada with is awesome 1 digit picosecond jitter fifo reclocker.

I wish, i could work with people like you to make my "soundcard" idea hehe. 🙂
 
#607
roger57 said:
Ian,

Would you mind posting the 1:1 scale drawing for your SPDIF to I2S board for mounting to a back panel?

Thanks,
Gary
Click to expand...

On my printer, it's 1:1. 0.5mm tolerance roughly in total. A bit up to your printer. Measure the long side just to make sure it's within your tolerance range.

Ian
 

Attachments

#608
Ian,

Sorry, I should have been more specific - a layout template for drill positions to mount the board on the back panel. This would be the view if you held up the PCB and looked straight at the coax, toslink and nuetrik connectors.

If you have it; great, if not, thank you anyways for taking the time to respond.

Gary



iancanada said:
On my printer, it's 1:1. 0.5mm tolerance roughly in total. A bit up to your printer. Measure the long side just to make sure it's within your tolerance range.

Ian
Click to expand...
 
#609
roger57 said:
Ian,

Sorry, I should have been more specific - a layout template for drill positions to mount the board on the back panel. This would be the view if you held up the PCB and looked straight at the coax, toslink and nuetrik connectors.

If you have it; great, if not, thank you anyways for taking the time to respond.

Gary
Click to expand...

I'm sorry Gary, I don't have that layout template. Please measure the dimensions by yourself if it is possible.

Regards,

Ian
 
#611
Ian,

When using the optional J9 connector for the front panel, are pull-up resistors required for the LED's, or are they already on the board?

When using the SPDIF PCB for input source selection only, is DC brought in via connector J13?

This seems to be the case as with J10 not connected, there is no power to the board.

Thanks,
Gary
 
#612
One more order added

palmito N01. Shipped. cddumat 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface Board
N02. spm I2S FIFO,Dual XO Clock board,S/PDIF Interface Board,2x SMT U.FL,8x 6",4x 12”,I2S backdoor KIT, 2xXO Adapters lot of 5,2xBIII adapters,2x SMT connector package
N03. Shipped. Regland - 1*I2S FIFO Kit, 1*Dual XO Clock Board, 1*S/PDIF Interface Board, 2*BIII adapter
N04. Shipped. AR2 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 2 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 2x Additional BIII adapters PCB, 2x SMT connector package for BIII adapters
N05. Shipped. vertigovh72 - 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT lot of 5
N06. Shipped. sidiropa 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface Board, 1x Universal SMT XO Adapters KIT
N07. Canceled.
N08. mfrimu 1*I2S FIFO KIT 1*Dual XO Clock board 1*S/PDIF Interface
N09. makumba1966 1*I2S FIFO KIT, 1*Dual XO Clock board , 1*S/PDIF Interface, 4 x BIII adapter, 1x I2S backdoor KIT for S/PDIF board, 2x Package of Universal SMT XO Adapters KIT lot of 5, 4x Additional BIII adapters PCB, 4x SMT connector package for BIII adapters Board
N10. LuisMCP - 1 x I2S Kit + 1 x Dual XO
N11. number9 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface
N12. Fridrik 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface 2x Universal SMT XO Adapters KIT, 1x I2S backdoor KIT
N13. jwkim 1 * I2S FIFO KIT 1 * Dual XO Clock board 1 * S/PDIF Interface Board 1 * I2S backdoor KIT for S/PDIF
N14. dsdjoy, 3 x BIII Adapters PCB, 3 x SMT Connector for BIII adapters, 12 x SMT U.FL Socket, 4 x 4" coaxial cable 50ohm, 4 x 6" coaxial cable 50ohm
N15. hangguy 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface, 5x SMT U.FL socket, 3x 6" coxial cable, 1x Universal XO adapters, 1x SMT connector package for BIII adapters
N16. Sachi 1 * I2S FIFO KIT 1 * Dual XO Clock board 2*BIII adapter and connectors
N17. Finaxe 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface 2x Universal SMT XO Adapters KIT, 1x I2S backdoor KIT
N18 Tagheuer 1x I2S FIFO Kit, 1x Dual XO Clock Board, 2 x BIII Adapters PCB, 3 x SMT Connector for BIII adapters, 1x Universal XO adapters, 12 x 4"double-ended U.FL coaxial cable
N19. palmito 1 x I2S FIFO KIT, 1 x Dual XO Clock board, 1 x S/PDIF Interface Board, 1 x I2S backdoor KIT for S/PDIF board, 4 x 4" coaxial cable 50ohm
N20. Keith Taylor 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x SPDIF Interface Board
N21. marcus1 1x I2S FIFO Kit, 1x Dual XO Clock Board, 1x S/PDIF Interface, 2x Universal SMT XO Adapters KIT, 1x I2S backdoor KIT
 
#615
roger57 said:
Ian,

When using the optional J9 connector for the front panel, are pull-up resistors required for the LED's, or are they already on the board?

When using the SPDIF PCB for input source selection only, is DC brought in via connector J13?

This seems to be the case as with J10 not connected, there is no power to the board.

Thanks,
Gary
Click to expand...

You don't need any pull-up, down resistor on external panel. they are already on board. Here is the on board panel interface schematics just for reference:
http://www.diyaudio.com/forums/digi...imate-weapon-fight-jitter-91.html#post3149231

Ian
 
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