In SX Microcontrollers, SX/B Compiler and SX-Key Tool, _BPM_ wrote:

I have looked for schematics on the sx-key to figure out this one.   I gave up after not finding any.   I wanted to hook up the sx-key to my pc via 2 fiber optic lines.  one tx one rx,  but after not finding any info on the rs-232 interface on the sx-key, I gave up.

I would really like to know if I can just hook up the TX and RX lines, and have my sx key still work.   If so, I will desolder the rs-232 plug, and replace it with fiber.   Also, it would help to know the voltage swing VPP width..  Normal rs-232 can swing from -15v to +15v.   What does the sx-key do?

Would like to know more.

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