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A nearly perfect USB cable tester

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Re: A nearly perfect USB cable tester

#51
post #42
post #33

Earlier quoted context omitted.

[flagged]

LTT are fine. I would strongly consider their products if they had any warehousing in Europe to make shipping here cheaper.

Yeah I don't see any problems with their stuff. It ain't exactly cheap, but a large part of that is their work in making sure you aren't just getting some random 2 dollar trash.

Re: A nearly perfect USB cable tester

#52
post #7

I want one that sends a pseudorandom data stream and tells me the bit error rate.

Yup, that's the sort of thing that's typically missing from cable testers. I have a USB cable that normally works fine, but introduces errors when doing full blast USB 2.0 bulk transfers. I keep it around just in case I ever come across a tester that can show me this in hard numbers.

Re: A nearly perfect USB cable tester

#53
post #35

As someone who really doesn't care about learning the details, and just want one USB-C cable that does it ALL to put in my backpack what should I buy ?

I’m sure it’s overkill but I wanted to know how much power my laptop or whatever was actually drawing.

https://iaohi.com/products/aohi-the-future-adonis-usb4-2-0-2...

Re: A nearly perfect USB cable tester

#54
post #35

As someone who really doesn't care about learning the details, and just want one USB-C cable that does it ALL to put in my backpack what should I buy ?

You don’t really want that. A thunderbolt cable is both stiff and expensive. They only really make sense to leave attached to the back of a monitor or dock. What would work better is a flexible 100w+ usb3 cable. You can’t do thunderbolt on it but it’s a tiny fraction of the cost and does everything you’d actually need on the go. If you actually do want it, this is the do everything cable https://www.apple.com/au/xc/p…

At my workplace someone always orders the what they perceive to be the "best" cables. They aren't thunderbolt, they are just oversized with thick braiding. They are all so stiff and heavy you can barely handle a phone while charging without the cable pulling itself out.

Re: A nearly perfect USB cable tester

#55
post #3

The thing that has been bothering me for a while is that the USB spec allows for software detection of capabilities. You can read the emarker data and see the supported protocols, speeds, voltages, etc. But there is not standard for usb controllers to present this data to the OS. So it’s stuck in the low level firmware and never passed up. In theory we could have a popup box that tells you that both your computer and…

> But there is not standard for usb controllers to present this data to the OS. So it’s stuck in the low level firmware and never passed up. In theory we could have a popup box that tells you that both your computer and other device support higher speeds/more power, but your cable is limiting it. There is. I used to use a KVM with USB 2 ports connected to my PC's USB 3 port, to which I connected a monitor with integr…

I have seen these kinds of notifications on occasion but they are far from the norm.

Re: A nearly perfect USB cable tester

#56
post #47

Earlier quoted context omitted.

Oh, they very much do. But like with everything in technology, they can do fuck all about it, so they resign and maybe complain to you occasionally if you're the designated (in)voluntary tech support person for your family and friends. Regular people hate technology, both for how magical and how badly broken it is, but they've long learned they're powerless to change it - nobody listens to their complaints, and the w…

I think you are right, but I think what I said is also true. People will notice some things. For example, with USB if they are using it for local backup they might notice, but with a lot of devices they will not. When they do notice, they will feel powerless. Even if we had a wider choice, they are not well placed to pick products. There is no way they will know about details of things such as USB issues (a cable is…

I think any of us just have to look at how many people ask us for recommendations on basic things like docks and adaptors to see how common this is. On top of that you can’t even trust what’s on the tin sometimes.

Re: A nearly perfect USB cable tester

#57
Brilliant little device. I will be picking one up ASAP!. Didn't know that lying cables were a thing but I have a ton of charge only cables?!

I speculate USB B wasn't included because there are only really two types, 2.0 (regular size) and 3.0 (has an obvious extension on the connector). There also don't tend to be power-only A-B cables because they are usually found on printers, Arduino s, ... And not for charging devices.

Fun fact: A Xiaomi fast charge cable (with orange plugs) has an extra contact on the A end to support USB C PD out of a USB A charger.

Re: A nearly perfect USB cable tester

#58

This isn't a Beagle. When I first read the headline, I was hoping that it would be more than a smart continuity tester. It seems to be a more comprehensive "Make sure the lines go where they are supposed to" tester. Looks pretty good. But the devices that test things like transmission speed, are a lot more expensive. I think that many of the issues that this device tests, can be mitigated by simply buying cables from…

Once in the realm of signal integrity, it's true that the price goes straight into lab grade levels.

Even in my reputable cables, there are a couple with suspicious continuity issues. I wonder if this could find them.

You could probably build a data transfer tester using an FPGA and some signal processing.

Re: A nearly perfect USB cable tester

#59
I actually purchased one of these as this article has surfaced before.

It’s well worth the hype, I used it to audit all my cables (both for home and work) and it’s amazing how many thick and unwieldy cables are actually terrible for data.

For example I purchased a pair of B&W Px8 S2 noise cancelling headphones, which boast a DAC if you connect via USB-C directly, the cable it came with though was thick but only rated for USB 2.0 speeds. These headphones cost more than AirPods Max, which are themselves considered overpriced, and include comforts like nappa leather; so shipping with a chunky cable that doesn’t even carry decent data feels like a bizarre oversight. Apple’s own USB-C cables manage the same power delivery at less than half the thickness with a woven shell. You’d assume a premium product would at least match that.

Honourable mention to the USB-C cables that ship with Dell Ultrasharp monitors (both pre-USB4 and post). Those support basically everything except Thunderbolt 4 despite being unmarked.

Re: A nearly perfect USB cable tester

#60
post #13

Earlier quoted context omitted.

I suspect most users do not even realise things are slow.

Oh, they very much do. But like with everything in technology, they can do fuck all about it, so they resign and maybe complain to you occasionally if you're the designated (in)voluntary tech support person for your family and friends. Regular people hate technology, both for how magical and how badly broken it is, but they've long learned they're powerless to change it - nobody listens to their complaints, and the w…

I had a programmer pushing multi-gig packages to a Meta Quest 3; and it was taking around a minute. He didn’t even think that it could be faster because he assumed the Quest or software was slow and didn’t check.

I implored him to try a different cable (after checking cables with the Treedix mentioned in TFA), and the copy went from taking over a minute to about 13s.

Its not just normal people confused.

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