Dear Technetters,

We are facing a peculiar problem. One batch of PC assemblies are behaving in strange way with regard to frequency drift.
The frequency drift noticed is more in the mornings and less in the evenings.

The PCBs used are of multi layer type with critical components sheilded. 

The same PCBs(from the same PCB manufacturer) assembled in our shop with similar components are passing the test.

Kindly let us know the reasons for this type of problem.

What are the possible remedies to over come this?

Thanks in advance.

Muralidhara .S
Dy.Chief Engineer,
R&D, ITI Ltd.,
Bangalore - 560 016
INDIA




  

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