[Ham-Mac] USB Serial adapters

Bill Coleman aa4lr at arrl.net
Thu Jun 23 19:14:43 EDT 2005


On Jun 23, 2005, at 11:05 AM, Chris Smolinski wrote:

> The problem is that some PC devices (like the early RigBlasters,  
> maybe even the current ones?) were not happy wiith the +/- 5 volt  
> output from a Mac serial port, they expected the +/- 12 volt  
> outputs common on PCs.

Technically, though, they should be satisfied with +/- 5 volts. The  
RS-232 spec says anything in a range of + / 3-25 volts is valid.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901



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