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Date: | Tue, 15 Dec 2009 07:43:11 -0400 |
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A question for the TechNet cable gurus. We are putting together some
semi-rigid coax cables and as this is new ground for me I'm not clear on
some of the inspection criteria. IPC/WHMA-A-620 is helpful, but
expresses things in absolutes. In particular, two things are being
questioned:
1) Air gap between dielectric and cable shield is not allowed.
Figure 13-62 shows it. But how extreme is that "not allowed"? Under
magnification there can easily be a gap that is not substantial, and is
not visible to the naked eye. What sort of magnification should we be
using?
2) Dielectric below flush with the connector face - again there is
no stated wiggle room on this. Any tips on arriving at a reasonable
compromise? If I can see a .001" gap do I reject it?
regards,
Graham Collins
Halifax Production Engineering
(902) 873-2000 ext. 6215
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