Hi everyone. This issue is confounding me. Hoping others on here may offer insights.
I previously bought CE09935 USB C cables for students to program controllers, but they have been very hit and miss with them being recognised by computers. I’ve substituted a shorter USB A to C cable of mine from home and tried a different C-C cable and they work perfectly. I also tried the CE09935 cables to transfer data from my phone and they connect inconsistently. I’m not sure what could be causing the issues.
Could I have some faulty cables? Could they be too long and signal is being degraded? Other things to check?
I think you have proven that.
At $5.05 they seem to be ridiculously cheap. And it seems like “cheap” is the key word here.
I believe where you are dealing with this sort of thing you MUST try to minimise unknown quantities. Even if that entails exceeding budget by purchasing tried and proven quality brands. So what if that means some more $$. Better than tearing your hair out chasing problems you might have introduced. You finish up going nowhere very quickly.
When working full time it was essential that all cables, connectors and instrument probe be above reproach. As soon as something was suspect it was discarded (in the bin) and replaced. Some of the measurement specs were so tight you could not afford to do otherwise.
A quick example. The reflectometer out of a 10kW transmitter. the response requirement 2 to 30MHz was to be WITHIN (NOT +/-) 0.2db. With suspect equipment or techniques that would be impossible.
Cheers Bob
I was thinking they were faulty, but I’ve never had problems with Core’s products ever before and they were fresh out of the packet, so wanted to check if there was anything I was missing.
I haven’t either but I admit I have been a bit outspoken on occasion.
This just boils down to if I can’t get enough info to determine suitability (usually the absence of schematic) I just don’t purchase.
Cheers Bob
USB-C cables are pretty straight forward electrically, there’s not much headroom for them to go wrong apart from ‘connections’ aren’t going through. Since you’ve already substituted other cables and have had no issues, we can rule out faulty devices.
From everything you have described, I believe in treating this as an RMA issue. I will continue contacting you via email.
I have found that the length of cables can make the difference between working and not. I would put this down to “penny pinching” in the gauge and/or quality of the wires used by the manufacturer resulting in higher than normal resistance.
