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 Post subject: USB to Dual Serial
PostPosted: Wed Jul 24, 2019 11:35 am 
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Joined: Mon Jul 16, 2018 8:25 pm
Posts: 4
My application uses two RSUV3A units. Aside from the gender, does it look like this cable would work with a pair of UV3A's? If it will work I'm going to cut off the connectors and use Dupont connectors to the boards

The data posted shows a "?" at the voltage setting. If it doesn't work, will I damage the UV3's or will it just not function?

.


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 Post subject: Re: USB to Dual Serial
PostPosted: Thu Jul 25, 2019 5:35 am 
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Joined: Mon Jul 23, 2012 6:25 am
Posts: 1143
If the cable in your link actually produces true RS-232 levels, this it will most certainly damage the RS-UV3/RS-UV3A serial ports. That's because RS-232 levels are + and - voltages and the negative (-) voltage will damage the serial port input. The RS-UV3/UV3A have TTL level serial ports (0,5V).

If you have RS-UV3A's you could use the on-board USB ports and a dual USB cable:

https://www.amazon.com/USB-Splitter-HENGSHENG-2-Port-Female/dp/B07MHYVVZ8/ref=sr_1_3?keywords=usb+dual+cable&qid=1564050671&s=gateway&sr=8-3

to connect them to a single USB port on your computer. They would appear as separate COM ports just like the cable in your link. This would also provide power for the RS-UV3A as well.

73,
Jim WA2EUJ


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 Post subject: Re: USB to Dual Serial
PostPosted: Wed Jul 31, 2019 2:27 pm 
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Joined: Mon Jul 16, 2018 8:25 pm
Posts: 4
Wouldn't it be awesome if they actually made one with the right connectors??
That's a help, thanks


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