Master Clock for your EtherREGEN

[R1200CL]

3 hours ago, Mouna said:

my question is - should I order the second one providing better performance....????

Why didn’t you order the one meant for ER ?

[R1200CL]

@Mouna

It’s the same seller. Just email him and change. I’m sure he has a solution. 

[R1200CL]

2 minutes ago, Mouna said:

R1200CL

 

thank you - your indirect answer showed me that I should have ordered the ER version - the clock is already on its way to here - and if it improves my system I will order the other one.

Thanks - best

Mouna

 

You can already now request a return. Seller won’t get any money before you saying item arrived. 
So you can already now order a second unit. The extra cost is of cause the freight of returning.

Make sure you at least got a 75 ohm unit. 
 

Good luck however you proceed. 

[R1200CL]

Someone must invent an optical clock interface 😀

Problem solved.  (I think EMM did many years ago). 

[R1200CL]

9 hours ago, sgr said:

About the LT 3045s, are we discussing adding them somewhere inside the Dapu clock,

Yes.
I have also asked seller, which again have notified manufacturer. Maybe they’re willing to change the PCB design.
 

9 hours ago, sgr said:

I’ve thought about using fiber between the two but as they are within a foot between the two I’m not sure I’d hear a difference.

If connected A to A side, why not try. Should be very cheap to do. 

[R1200CL]

On 10/20/2020 at 9:30 PM, Avalfa said:

How hard can it be to buy 1m or even 0.5m would be enough...

https://www.amazon.co.uk/gp/product/B07BZWY57M?pf_rd_r=GBPS87705YJ5XJ28P3G9&pf_rd_p=e632fea2-678f-4848-9a97-bcecda59cb4e&th=1
 

This should be a good option. 

[R1200CL]

https://finddiffer.com/rg6-versus-rg11-coaxials-whats-the-difference/

I’m not sure RG11 as the 4731 is, is worth all that extra hassle. I find the link above quite informative. 

 

I think asking Ghent to do the extra shielding (JSSG360), is easiest way to go. I know he can do 4694R, but I haven’t checked 4794R. 

 

https://catalog.belden.com/index.cfm?event=compare&cp=PF_4794R,PF_4694R,PF_4731R

I noticed the 4794R has equal outer shield as the 4731. 

 

[R1200CL]

4 hours ago, GMG said:

Are the audio 75Ohm BNC SPDIF cables not suitable for this application?

They should be perfect 😀

[R1200CL]

11 hours ago, Exocer said:

Ghent bnc cable.

Did you buy this one https://www.ghentaudio.com/part/e07.html without extra shielding?

 

Or the Belden 4694R he also could make (not listed) ?

[R1200CL]

20 hours ago, jacques_racine said:

Hi,

Just received my unit.

Still trying to figure out how to power it.

Based on what I read here, it seems we should feed it with 12.5V - Is this still the case?

Is there a ready made LPS you can recommend that would fit the bill?

Keces does 12V, not 12.5V.... Many thanks

Maybe not what you’re looking for:
https://www.aliexpress.com/item/4000475036942.html?spm=a2g0o.productlist.0.0.1bf85590zuVlfP&algo_pvid=6c739b54-2aca-4ea6-b827-69a3135389c3&algo_expid=6c739b54-2aca-4ea6-b827-69a3135389c3-0&btsid=0bb0624016039650501982504e471c&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

 

The Gophert NPS-1601 is actually quite nice. You can add LT3045 boxes after them. 
 

[R1200CL]

3 hours ago, GMG said:

I am considering asking for a combo box: power supply + Clock + Etherregen. All in one box, powered from the same PS and direct PCB connections.

By sharing PS, you will also possibly have leakage currents. If you’re aiming for the best, you may consider dual LPS-1.2. 

 

 

[R1200CL]

This is the seller one should purchase from. 
 

https://www.aliexpress.com/item/4001245799329.html?spm=a2g0s.9042311.0.0.367a4c4dhrWEwV

 

@panhead

Your link has only one square wave output. It’s not the same as rest of us bought. (But will work). 

[R1200CL]

18 hours ago, jamesg11 said:

No extra requests I needed to give to them?

No, but you can ask how a possible modification of PCB is ongoing. Using LT3045’s  instead of the present regulator. Seller promised me to talk to manufacturer about this. 
(And you need to find a clock cable). 

[R1200CL]

On 12/8/2020 at 8:44 PM, Avalfa said:

The funny thing is, when I switch back to the situation without, it sounds instantly there's missing something.

Not sure how you’re powering the clock, but if possible a better DC cable won’t hurt. 

[R1200CL]

On 9/29/2020 at 1:25 AM, Superdad said:

Still, all are months away and it is too soon for any bean spilling.

Any Xmas updates maybe ? 🤶🏻

[R1200CL]

9 hours ago, Roasty said:

Is there any issue with ordering this one?

Please purchase the link previously suggested on Aliexpress.

 

Is there any reason not to ?

 

Edit

Are you sure SoTM is using sinus ?

[R1200CL]

11 hours ago, FIndingit said:

Now we only need somebody to look at the Chinese ocxo boards and say whether the square wave implementation looks good or bad.
 

I don’t think there is any isolation of the signal, which the expensive ones have. 

I think @JohnSwenson is supposed to have one, if Alex has sent his over for evaluation. 
I guess not a prioritized task 😀

[R1200CL]

@yy Maybe your DAC should have a better clock ?

https://a.aliexpress.com/_mMO1YCd

75ohm output by BG7TBL 10MHz OCXO FREQUENCY STANDARD 3 channel square wave  clock Master Clock for your EtherREGEN

 

[R1200CL]

48 minutes ago, yy said:

The phase noise of the external Nadac Clock-L device is -130dbC @ 10Hz. The BG7TBL (based on DAPU spec) is -125dBc @ 10Hz, so it should be still a major improvement. 

I thought it was the opposite. Higher numbers was better. Anyone can comment?

 

48 minutes ago, yy said:

The Adjustable BG7TBL should be able to generate this 692Khz signal on its output, no?

If seller says so. I haven’t studied the device. Maybe you should ask how this is achieved? And if specs is same on all frequencies and outputs. 
I must admit I don’t know enough about these things. So maybe don’t pay to much attention to my comments. 
 

Edit:

Closest you get is 690 KHz (probably doesn’t matter). 
Adjustable Frequency Range/Step: 10K-180MHz/Step 10Hz

[R1200CL]

1 hour ago, MartinT said:

I have two BG7TBL units, I'm using the one with 3 x 75 Ohm outputs, one squarewave and two sinewave.

Then you didn’t purchase this one ?

 

75ohm output by BG7TBL 10MHz OCXO FREQUENCY STANDARD 3 channel square wave  clock Master Clock for your EtherREGEN

https://a.aliexpress.com/_mNKlgzX

[R1200CL]

Probably cheaper. 
https://www.ikinchlaw.com/index.php?main_page=product_info&products_id=51633

 

@sgr

Do you have pictures ?

[R1200CL]

Are we discussing this clock ?

https://www.adark.co/collections/project-giesemann-ocxo/products/afterdark-project-clayx-giesemann-ocxo-10mhz-時鐘?variant=32128368476278

 

If so, maybe a DC version can be made ?

Group buy ?

[R1200CL]

13 hours ago, ambre said:

From afterdark 2 types / brands. The Giesemann emperor (up)  and Cybershaft 14 up. See pics below. 

I personally struggle with spending to much or more than the price of the EtherRegen on a clock. 
So what is the difference from Prince and up to your start point ?

Will a version with only DC input save a lot ?

 

Would be interesting to have a picture of those AfterDark clocks inside. 
It’s the same clock being used in all versions?

 

[R1200CL]

2 hours ago, AfterDark. said:

For example, the above Phase Noise graph is measured by Symmetricom 5125A is showing phase noise of the OCXO clock is -140dBc@10Hz / -113dBC@1Hz. 

Is this related to one specific model ?

 

Can a square wave version be made ?

[R1200CL]

7 minutes ago, AfterDark. said:

We suggest to use quality OCXO which around the price range vs EtherREGEN. 

Interesting 

Would a DC version lower the price ?