I have a basket with a lot of USB-c cables and without the tester I can't remember (nor guess) which one does what.
wiggle the cables around to see if and when any of the lights flicker, indicating a bad or broken connection. i've found a few bad cables that would intermittently fail.
> Cable history
> Add a cable, give it a name, and WhatCable records how it performs over time, with a verdict per cable.
And I have nothing to gain from that sale.
Oh god not again... before everyone starts naming their favourite brand, here's a 265 comment HN thread[1] (from last week !) on why these cheap USB-cable "testers" are not worth anything.
TL;DR You need a six-figure wallet to seriously call anything a "hardware tester" for USB cables. User ChrisMarshallNY has a one-liner summary buried in that thread:
Think about it. You need to generate a precise, calibrated, 40GHz signal, transmit it, then precisely measure the returned signal for phase, amplitude, and waveform integrity -at that speed. Oscilloscopes and logic analyzers that run at that speed, are damn expensive.
But as was repeated 101 times on that thread ....
All that those cheap $40 boxes are doing IS reading the marker.
Sadly you are kidding yourself if you think a $40 box off Amazon is doing any sort of "verification". Let alone in any sort of calibrated, reproducible sense free of random unknown variables.
Good luck spotting those counterfeit / phony markers with your $40 toy.
Just one of many examples of basic things your $40 toy won't tell you.
Sadly yes.
Like many people on that thread concluded:
The best "middle ground" thing you can do is pay a premium to buy your cables from reputable manufacturers.
A $40 toy won't tell you if the marker chips it has just read are fake / counterfeit.
You need the expensive kit for that.
We get it. A cheap tester will not tell me if a cable from a dodgy supplier is counterfeit. It will tell me what the capabilities are of the dozens of assorted cables I own from reputable manufacturers, which is otherwise difficult if not impossible to discern.
What the chip reports is itself inherently useful information, especially if you have cables from reliable manufacturers.
Its not a viewpoint "man", it is a FACT.
There are people here actively using the term "it verifies" in relation to their $40 toy they bought on Amazon, they absolutely need to be corrected firmly.
A $40 toy DOES NOT "verify" anything it (a) Does a DC continuity test (b) Reads the chips on the cable. NOTHING ELSE.
People here trying to pretend it does more than a+b need a reality check.
The $40 black-boxes do two things:
1. Basic electrical continuity test
2. Read the marker chips (if present)
"Excessive retries" sounds like exactly the sort of intermittent, hard-to-diagnose cable issues that you will not find unless you test the USB cable on a 6-figure rig. :)
If I want to tell a cable that can do only USB 2 from one that can do 3 from one that is actually thunderbolt, the treedix is a godsend. So. Many. Devices. Come with some unknown usb cable. Can it only charge? Transfer data? How fast? Stuff like signal integrity, dispersion, differential timing, phase shift etc are totally out of scope for this simple thing - telling apart these cables.
And if the marker chips in your "some unknown usb cable" are fake / counterfeit ? Then what ?
Your $40 toy won't help with that scenario and you will be back at square one. That's what.
Maybe you need absolutely 100% confidence your labels don't lie, but I and presumably others on this thread merely want to check for the presence of the label and the declarations on it. That's enough for me to sort my cables.
Maybe occasionally I'll come across a counterfeit cable (or more likely, a damaged cable, because I generally buy reputable ones) and have one underperform its label, but I can get rid of it then.
And $20,000 is five figures, so an off-the-cuff six figure estimate is an error of an order of magnitude. That's quite a large error.
But to bring it all back 'round again: The oft-repeated suggestion that a $40 device can do the same job represents an error of 3 or more orders of magnitude. :)
Some of the stuff in this cheaper class of kit can observe what happens in terms of voltage and/or current on the wire between two devices, some of them can have a chat with a cable and/or a device on their own to see what they state of their capabilities (as this software does), and some of them can also test things like DC continuity. That's useful, but it doesn't help to grade the actual signal characteristics of the cable.
There's a galaxy of difference between DC and a 40 GHz symbol rate.
See the discusison linked to.
Trust me, my interest was piqued by that thread and I went down the rabbit warren with Mr Google and spent far too much time on the subject. I looked at the various manufacturers and the setups required.
TL;DR: To start with, you need fancy harness assemblies. Then you need to plug those harnesses into very, very expensive equipment.
You're not going to find anything for $20k. High-throughput USB-cable testing simply can't be done the same way copper CAT6 certification can with a 20k Fluke.
For those who want to play with Mr Google, some manufacturers from my notes: Wilder Technologies, Allion, Keysight, Tektronix, Teledyne LeCroy
Here's one blog post I uncovered during my researches: https://www.keysight.com/blogs/en/tech/bench/2023/02/17/powe...
You need a six figure wallet to want to spend $20k on a tester :)
Heh. I'll give you a +1 for that one.
Reminded me of the old joke...
What's the quickest way to become a millionaire ? Be a billionaire and buy an airline.