<I can't agree with that. OK, so a logic analyser will monitor a lot of <points at once, so you can test unrelated sections in the hope of finding <the fault. But when you've got 64 or 128 or whatever traces, you still <have to think about the fault. I'd also point out that if the LA in not connected into the system correctly it can by virtue of ground loops and other things like the leads actually induce problems. Seen that occur to people. same for scopes too! I'm not saying they are bad but for some stuff you can end up looking for the forest between the trees. the best example was a multibus design bring up another engineer was doing and the board didn't do what was predicted and of course it was surrounded with scopes LAs and even probes... the problem... 8086 asm MOV AH,Ah ( was supposed to move the immediate value x0A to register A high byte!) Them trees can hurt when the land of you. Allison