The following question is one that was provided by designers for
the A basic level exam. It is NOT included in the final
published test and is for reference only. The topic is Viewing
Properties of Printed Boards.
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121 When describing a bare board which datum planes
relate to X and Y coordinate information?
A. the drilling datum
B. the tertiary datum
C. the primary datum
D. the zero-zero datum
E. the secondary datum
F. the component datum
select the two most correct answers
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Previous QOD
120 Which two factors are the primary influence for the
layer assignment of a printed board
C. the direction of conductor routing
E. the balanced distribution of copper
Resource: IPC-T-50 Specific Terms; IPC-D-275 para 3.3.6;
3.7.4;5.2.5.1; 5.3.1.6
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Please send comments, constructive critique, or suggestions to
Lisa Williams at [log in to unmask]
Dieter Bergman