The Well Tempered Master Clock - Building a low phase noise/jitter crystal oscillator

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#3,163
Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.
 
#3,165
andrea_mori said:
Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.
Click to expand...

why not make a clear sketch or a photo how to connect your clocks and sin/sq converters to a fifopi for example. I guess there will be enough fifopi owners who like to try your cloks Andrea. Lower the threshold for them to get on board ?
 
#3,166
SimonJ said:
Thanks, so I am starting to understand.

So it means the clocks would all be external to the FIFOpi and I would need to run a short cable from the clocks to where the crystal are on the FiFoPi? Is this correct?
Click to expand...

Yes, it's a good practice keeping each oscillators in each separate box and connect them to the FIFO/DAC with 50 Ohm coaxial cable SMA terminated.

In the guide you can find the instructions to get such that cables.
 
#3,174
Yes I saw it, but Andrea said 'TWRPS UGL 1 oscillator board +2 frequency doublers'
according to the figures provided we should be able to supply two DRIXO board with one TWRPS UGL,2x DRIXO board consumes 120Ma the TWRPS UGL
can provide 150Ma;
Andrea can you confirm please.
 
#3,178
And the output level form the squarers are OK for Ian board?

//


andrea_mori said:
Usually for Ian's FIFO you need a pair of master clock, one for each sample rate family (x44.1 and x48).
So the first choice is the frequencies you need.

Then you have to choose one of the available oscillators, there are some options, in the guide you can find a list of them ordered by performance (descend).

Then you need one Sine to square converter for each frequency to fit Ian's board. There are 2 type of squarer with different pins layout to adapt with Ian's stuff (old FIFO, MC FIFO or FifoPi).

Finally you need the power supply, you can find a pair of regulators in the guide.
Click to expand...
 
#3,180
RIP Jocko Homo,

Was the clock man of our hobby and the defendor of what happen below 1 hz for our DACs.
He had a true writting style, was saying he was not loving people but was giving a lot to them with his particular harsh subtility on an another well known bar. His discrete schems about I/V were something...as the conversations with Pedja Rogic, Thorsten Loesch, Guido Tent...and Andrea Mori as well long time ago...all great diyers that followed their dream to make good soundind devices.
RIP Jocko Homo
 
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