4 Jun
2009
4 Jun
'09
7:16 p.m.
I am trying to repair an HP3421A data acquisition and control unit
that fails its power on tests.
In the service manual it refers to a number of "Signature Analysis"
tests that essentially mean that the unit runs some diagnostic
routine and you go and collect "signatures" from various test points.
Unfortunately I do not have a device to compute these signatures.
Does anybody know how to calculate them using a logic analyzer
(I have a Bitscope and an HP 1630D), or something similar?
Thanks
**vp