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Security / Re: Microsoft repackages apps with a telemetry .NET wrapper
« Last post by Monkeh on Today at 08:19:25 pm »
From an EU point of view (GDPR) the rules for telemetry are quite clear. Telemetry can't be forced upon the user, i.e. the application has to run also when users deny the collection of telemetry data. Users have to be informed about all the details (what, why, how long stored, and so on).

And yet you cannot use Windows without telemetry.
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General Technical Chat / Re: Cable Management
« Last post by soldar on Today at 08:19:19 pm »
I have a wire strung between two nails and cables hang from there.

I am considering adding a horizontal board with closely spaced nails.
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PcbWay does it. I used them a couple times with no issues.
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Test Equipment / Re: GSG-5 Series GNSS simulator and exploration
« Last post by Kean on Today at 08:17:37 pm »
Thanks for the update.
Great to hear Safran responded, but sad to hear you aren't having any luck with comms.

I own one of the (mostly useless) Spirent units (GSS4100).
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Beginners / Re: Convert US standard 115V to International 230V
« Last post by Jwillis on Today at 08:16:06 pm »

The transformer really doesn't care if it's 50 or 60 Hz, it'll run fine either way. If it's a
50Hz transformer it'll actually run slightly cooler at 60Hz because it may have more
copper in it. And a SMPS will generally also run OK at either line frequency.
Unless there's some kind of frequency sampler circuit that wants to see a particular
line frequency(which would be rather odd), it's not worth the bother to design the
device for one or the other.

On a SMPS, frequency of the mains voltage doesn't matter because the mains power is rectified to DC then the frequency is set to a by the PWM for the transformer.
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Pet peeve: Hackers.

Instead of spending an evening watching movies on Friday night with my wife, I spent over an hour on the phone with Netflix after a hacker hacked my account, changed my password and the email associated with my account, and locked me out. Bastards...
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Security / Re: Microsoft repackages apps with a telemetry .NET wrapper
« Last post by bd139 on Today at 08:14:22 pm »
Your reasoning is detached from the outcome.
That’s a rather lofty accusation.

I worked in the software industry for years, and at a usability agency. I have relevant, real-world experience with this, and am not the deluded simpleton you essentially accuse me of being.

I'm not making an accusation. I'm just stating that the data and the intent do not always end in the conclusion that people think that they do. That is mostly because people don't know how to do a proper analysis of anything really. This is not specific to this but the claims of a tangible outcome are vastly overstated.

I would suggest that the "usability agency" is a considerable bias as well based on my other comment. Literally there is no business if you tell the client not to touch something, so the default state is that a change must be made otherwise there is no report to make.

The reason that we stopped hiring agencies to run user studies for us is that at no point did anyone run a baseline analysis against a null hypothesis i.e. no change. I got into a hefty argument with a consultant over this who said that a change is 100% necessary, without providing any evidence and before the study was run. That is a complete lack of objectivity, intellectual and professional integrity in the industry.

The end game of two large, well known agencies being hired was that we had to roll ALL the changes back because it crippled clients.

This cost us a LOT of money. Try writing off a couple of million GBP and you'll see where the ROI is.

I literally gave a real-world example: the post-pasting popup menu in Microsoft software (Office, etc). Usage telemetry had shown that the “paste” command is very frequently followed by “undo”, because the result was not as intended. Then people would either use a Paste Special command, or paste it normally and follow it by manual reformatting. So they added the little popup that lets you change the pasted formatting in situ. I think this is a fantastic feature, and well-implemented: it makes it easy to recover from an unexpected result, yet doesn’t force any change to one’s workflow at all: you can also simply ignore it and fix the problem in the old ways.

Personally I think that's a shitty feature because it doesn't work like anything else in the rest of the OS or any other software. It's literally an edge case coded into the office UI runtime.

Compare to "Paste and Match Style" on macOS which is system wide.

I don’t disagree in principle with that statement, but maybe I’m just not quite as jaded as you.

It's not really jaded, but experienced.

Put it this way, who's the last person you go to for financial advice? Actually a financial advisor. Why? Well it turns out that they have two principal objectives (a) earning commission and (b) reaching sales targets. That gets you a mediocre outcome. What gets you the best outcome is developing an understanding of the domain and the problem and that comes from a proper study and analysis, not witchcraft and hope for a fixed price.
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Beginners / Re: LC filtering for combined Vref/VDD of ADC
« Last post by HwAoRrDk on Today at 08:11:47 pm »
I just had a thought. I am buffering the inputs to the ADC with op-amps because I need to have a very high-impedance connection to what is being measured. Should I re-organise the filtered 3.3V so that it is supplying these op-amps as well as the ADCs? Otherwise, will the op-amps just be passing power supply noise into their outputs? Although, I do have RC filtering on the output of the op-amps...
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Beginners / Re: Convert US standard 115V to International 230V
« Last post by soldar on Today at 08:11:29 pm »
The transformer really doesn't care if it's 50 or 60 Hz, it'll run fine either way. If it's a
50Hz transformer it'll actually run slightly cooler at 60Hz because it may have more
copper in it. And a SMPS will generally also run OK at either line frequency.
Unless there's some kind of frequency sampler circuit that wants to see a particular
line frequency(which would be rather odd), it's not worth the bother to design the
device for one or the other.
If you bother to read the thread you will learn that this is not relevant or applicable.

And, as a general statement it is also wrong.
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Test Equipment / Re: Test Equipment Anonymous (TEA) group therapy thread
« Last post by bsdphk on Today at 08:07:27 pm »
I need help identifying a Tek scope plugin, for the most obscure reason you can possibly imagine...

First two (huge) photos:

https://datamuseum.dk/bits/30006763

https://datamuseum.dk/bits/30006749

These photos were taken in Stockholm in early 1955 by Bent Scharøe Petersen, and show the setup he used to investigate if the brand new "magnetic core memory" technology was any use for the IAS-derived computers being built in Sweden and Denmark at the time (BESK, SMIL, DASK)

There are also photos of scope-traces, with handwritten descriptions which either read "20µs/cm" or maybe "20ns/cm":

https://datamuseum.dk/bits/30006678

So which is it ?

The scope is a Tek 735, which does not seem to have a serial number.

But I have been unable to figure out if the plugin is 53A or 53B ?

My personal guess is that it "20ns/cm", mostly because "20µs/cm" would make the signals very slow compared to the IAS-derived computers.

If it is 20ns/cm, the signal is 25 MHz, and as I understand it, the 735 should be able to do that with a 53B ?

Thanks for any help.

PS: All the 200+ pictures are here:

https://datamuseum.dk/wiki/Bits:Keyword/PERSONS/BENT_SCHAR%C3%98E_PETERSEN/PHOTOS
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