Electronics Forum: analog digital (Page 3 of 3)

ICT and specifying PCBA testing

Electronics Forum | Tue Nov 01 14:46:31 EDT 2011 | davef

Agilent TestJet Technology White Paper In the early 1990s, the testing of digital parts became problematical. Previous in-circuit test techniques sought to ensure a correct, functioning part by applying digital patterns, called vectors, to the input

PCB groundloops?

Electronics Forum | Wed Mar 27 20:21:57 EDT 2013 | vitroblue

Hi I was looking for the development board of a MCU i was asked to evaluate, but upon checking out the gerbers i found something weird this pcb is a 4 layer stack 1 smd connections 2 gnd 3 vcc 4 thd connections question 1) in this case, i'd place o

Re: DFM / DFT information

Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F

=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so

MPM Accuflex questions and issues

Electronics Forum | Thu Feb 15 13:46:16 EST 2018 | aemery

Griinder, Maybe it's me, but I think what you might be saying here is that you see a reflected image of the PCB or Stencil when you and teaching the fiducials and it is interfering with the teaching routine, is that correct? If this is true it is c

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