On 2024-10-27 10:56, Jeff Cook via Elecraft wrote:
And you can’t blame it only on ham radio. Many times I’ve had the
wrong USB-C cable in my hands - AND THEY’RE NEVER MARKED. Sheesh.
*** I have two little testers. One has every known USB connector
around its perimeter. And LEDs for every wire. So it can tell you
which
wires this particular cable has.
The other one can connect to a usb socket and tell you what voltage
it's
putting out. It can also go between a USB and its load and tell you
what's
the voltage, what's the current. It even has an oscilloscope screen to
show you
the crud on the power. And for the more advanced modes, it can find out
what modes that wall wart supports, and even manually enter commands to
it.
- Jerry, KF6VB
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