Adalm Pluto TCXO modification - DM4DS GND mod

Adalm Pluto TCXO modification - DM4DS GND mod - QO100

Рет қаралды 12,536

4 жыл бұрын

If you have the "new" REV C/D watch: • New ADALM PLUTO TCXO m...
While more and more asked for a version with the LDO, taking the 5V from the diode, I did a livestream from the microscope cam. It´s uncut and nothing was prepared.
You can watch it here: • Adalm Pluto FULL modif...
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Now to the Video:
Step - by - step - howto - modify the AnalogDevices AdalmPluto with a TCXO on a extra PCB.
The video is done to show step by step how a modification can be done. It´s not made to show you "in perfection" my skills, NO, it´s done to take away your uncertainty and I´m doing the steps extra slowly, shacky, imperfect to show you: YOU can do that, TOO! If I would do it like my mods are done, and I´m a perfectionist, it would scare you from trying it. So yes, this video is to show, it could be done with "not so good" skills. Believe in what you do!
More info about this method:
This method is not perfect cause the noise on the C165 Voltage isn´t small.
For a first usage or if your standard isn´t ultra, it´s fine but
if you want/need a perfect signal, you must add a low noise regulator!
Not all Plutos are equal. I did some like you see in the video and they sound great, but others (most) don´t. Mostly they sound a little sqirly and gourgling, then you must really add a LDO. Look what your local store has available with low noise and the right voltage for your (VC)TCXO. Adding extra C helps also. You can take the 5V for the LDO from the "other" side of the big diode, thats the easiest access to the 5V from the USB,
If in the comments you aks for the "perfect" version, I can do one and hopefully Piero can edit it. I´m not good in editing, so again here, special thanks to Piero for his superb work. Your comments make the difference.
My GND mod, published first on twitter, is done to stop disconnecting the USB or LAN Adapter. So if you wanna use it via LAN/Network, this is the easiest way to fix the disconnects!
If you have questions or ideas please comment. I try to answer everything or write me an email to:
dm4ds@gmx.de
Also visit my homepage: www.dm4ds.de
Thanks for your support! All the positive feedback is wonderful! Thanks
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Special thanks to Piero Forno IK1IYU for editing.
Thanks for watching
Sandor
DM4DS
#tcxo #pluto #modification
pluto adalm tcxo mod modification solder iron solder wick solder paste

Пікірлер: 25

@ea4guweloy947 4 жыл бұрын

So it is not necessary to weld thread to the chassis of the mico-usb?, to use the pluto by ethernet?

@hamoperator525 4 жыл бұрын

Only did the mod in the video and now the pluto runs 24/7 in LAN. Saved the project.

@oscardiez5657 4 жыл бұрын

Well done. Please note that the muRata TCXO with 40MHz is a 0.28ppm type (see datasheet)....not 0.2ppm !!! It is wrongly declared on the Mouser website. And the slightly cheaper XTCLH model offered by Mouser is actually a 0.5ppm type to be discontinued. Make sure you use the more expensive XNCLH40M type (0.28ppm). Suggest to update the video title - also of your other video - to state 0.28ppm

@DM4DS 4 жыл бұрын

The new one is a 0.28ppm! I bought all old real 0.2ppm :)

@oscardiez5657 4 жыл бұрын

@@DM4DS That must be muRata's part no. XNCLH40M000THJA1P0 with clipped sine wave output instead of CMOS?

@DM4DS 4 жыл бұрын

What you write must be the "new" 0.28ppm. I have to look again in the datasheet. Mine has 2 different letters and is discontinued 2018. Also the price was 14,xx € + tax , not 8,xx€. A Spanish OM took the PCB out to measured it, after he received his modified Pluto and approved 0.21ppm over long term / temperature. I don't have such accurate counter, so that info was great for me. If you write me an email, I try to find his graph and send it to you. And yes, it's a Clipped sine wave. Also the level is relevant. Pluto don't like lower or much higher levels.

@oscardiez5657 4 жыл бұрын

@@DM4DS According to datasheet the XNCLH40M000THJA1P0 with clipped sine wave output is still in production and is indeed 0.2ppm. The once with CMOS output (different part number, starting with XNCLH40, but rest is different) are 0.28ppm. I will order some of the 0.2ppm types and give it a try.

@DM4DS 3 жыл бұрын

@@oscardiez5657 I tested some of the newer TCXOs but they are all worse than the old ones. In the time since the video I got my jitter measurement equipment fixed and there it is instand to see how bad they perform against the old, also the Vpp is too low! The old made 1.5Vpp and the new clipped sine wave do 0.8Vpp, thats too less! Instead I use now a 0.1ppm, I import from Taitien directly from Taiwan. They do a really good job but as wrote in the description, A good LDO is necessary go get a real clean signal. Some Plutos have really bad noise on the voltages, some are fine! More infos via email :)

@AMONI2011 3 жыл бұрын

Nice video, what is the type of Tcxo you use to replace the original one and where can I buy it? I just orderdered the Abracon ASVTX-C-40.000 I05-T (0.5 ppm), but now I see yours is only 0.1 ppm....

@DM4DS 3 жыл бұрын

If you need one, you can send me an email. Can solder it onto a PCB etc. In the video you see the old 0.2ppm, but you are right, I'm only doing 0.1ppm mods now also on a different PCB especially designed for the 0.1ppm.

@Mark300win 3 жыл бұрын

Do you recommend the 0.1ppm mod or 0.2ppm?

@DM4DS 3 жыл бұрын

Hello, since the "good" 0.2ppm is no longer available I only do 0.1ppm mods!

@cristianpancia5637 4 жыл бұрын

Could you describe the tools that you.'re using and where to by it

@DM4DS 3 жыл бұрын

Thanks for asking. The tools are nothing special. 2 soldering irons, 183°C solder paste, solder wick and some tweezers. If you want details, please write me an email: dm4ds@gmx.de

@armmargret1970 3 жыл бұрын

@@DM4DS The 183°C paste is in most cases standard SN63PB37 alloy. This is tin with a lot of lead. The Pluto is leadfree from the factory. So there is an undefined mix in your solder joints. In the industry noone would do this for reliability reasons. Maybe this is why the hobby is called "amateur" radio.

@DM4DS 3 жыл бұрын

@@armmargret1970 my 4 solder pastes between 138°C and 260°C are all lead free. This is no cheap Chinese whatever paste. Tryed it but was never happy. It's from ChipQuik, ordered via Mouser. Can send you the links if you are interested. Would be nice if you could Link us your channel. Must be a great channel for high professional works. Greetings Sandor

@jellybelly2234 2 жыл бұрын

What kind of microscope camera is in use?

@DM4DS 2 жыл бұрын

Hello @jellybelly2234 - it´s one of this kind: amzn.to/3tbccCB My microscope is a trinocular one and this camera is always mounted and running via a HDMI out to my Elgato CAM Link 4k: amzn.to/3ao2wOo - hope I could help - thanks for asking

@jellybelly2234 2 жыл бұрын

@@DM4DS It´s a good one...much better than mine, but it´s also not cheap ;)

@Drecksnick 4 жыл бұрын

In der Zeit wo as gefönt wird hat man das mit ner dünnen Spitze 5 mal angelötet. Wieso muss immer so ein Theater gemacht werden?

@DM4DS 4 жыл бұрын

Es gibt immer mehrere Lösungen. Möchte zeigen wie man es machen kann. Wenn Du lieber mit dem Kolben lötest, sehr schön, aber bitte toleriere das ich es gerne Föhne. Danke. Toleranz / Akzeptanz