9 Nov
2011
9 Nov
'11
11:53 a.m.
I've seen a couple of blown-up 1489s through bad grounding of a
cabinet (I didn't do it, it was there and I figured that out after the
fact). -- Ian
Oh, sure. You can blow up 1489s electrically. One other thing that kills
them is a high voltaeg spike on the input, perhaps from a lightning flash
near a long terminal cable.
But I don't think that connecting a valid RS232 voltage to the input of a
powered-down 1489 will damage it. I never has for me, anyway.
-tony