Works with "get sigs", but not in test

[AES Wind]

Hey!  Howdy!   

Curtis. . . . ?  Running a test, go to the troublesheet, have opens.   Commence debug, right-click, select "get sig," and SHAZAM!  Signature. 

Sooooooooooo.  What am I doing (or not), that is causing my prober to not get signatures during the test (quite a few components) yet get'em just fine during debug right-clicking?     


Oh!  And how are ya?  How's life in the big city? 

Thanks!

[admin]

Hey there!
Life in the big city? Pretty good. How are things in America's heartland?

Assuming that probe placement is perfect (which I am sure it is)...

My first thought is that the PCB may be bouncing slightly. Make sure it is well supported from underneath.
It could also be a probe tip that is wearing out.
Is Opens Recheck enabled (Tree pane/Components tab)? If yes then maybe setting it to 48 mils may help.
I will add more if I think of anything else.
Thanks.

Curtis