Do I:
Thanks for the help.
- connect it to ground but only on 1 side? (which side?)
- connect it to ground both sides?
- leave it unconnected?
Thanks for the help.
The braid is soldered to the connector body on either side of the cable. Running the shield to ground is done inside the equipment(s) that utilise the cable.
I'm curious how you plan to control the characteristic impedance of the cable. USB is pretty fast. You might be able to get USB 1 full-speed (11 Mbit/s) going, but I'm highly doubtful that USB 2 Hi-Speed (480 Mbit/s) will work for you.
Tom
Tom
If you dont know this you will never beat a well made standard cable. This is standardised territory where there is no better - but just precisely as it should be - no more , no less. But I'm sure you have fun and that's ok.
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Microphone cable may well have PVC insulation on the internal wires - not very suitable for high speed data which require low losses at 100MHz and well beyond... Data cables like USB, Ethernet usually have PE insulation on the twisted pairs. The problem is moisture, PVC can absorb a lot more than PE or PTFE, and moisure is lossy at these microwave frequencies (its why microwave ovens can heat food).
45+45=90 Ohms, which is not far off a typical cable, so it will probably work for short cables, but perhaps not for longer cables. I think that cheap USB cables are often not well matched so yours may not be much worse. The USB standard was created with practicality as the foremost consideration. But if you want a long USB connection, consider converter boxes for Cat-5 wire.
https://www.amazon.com/s?k=cat5+usb...7_13351709&tag=mh0b-20&ref=pd_sl_70lnlc00gs_e
https://electronics.stackexchange.c...hm-differential-impedance-and-single-ended-45
https://www.amazon.com/s?k=cat5+usb...7_13351709&tag=mh0b-20&ref=pd_sl_70lnlc00gs_e
https://electronics.stackexchange.c...hm-differential-impedance-and-single-ended-45
Use an off-the-shelf pre-assembled USB cable and modify it to suit (try to pick one that actually comes with a technical drawing). Oftentimes the USB cables that are sold through Mouser, Digi-Key, etc. will have good spec sheets.
Or just buy one that works.
Agree with Casull, I think hard to beat pre-assembled ones. Are you may be trying to go a longer distance than they make. If so, remember max distance I think is 5 meters for a 2.0 cable.