Certification
CLD question 39
Solved!
@Barionics wrote:
Does anyone know what q39 of this paper is about? One of the problems with these revision papers is that I can't look up icon symbols with a google search ! See attachment.
The style of the boolean constant tells us that this example is older than LabVIEW 2010 (See here ;)) It's a bit stale.
The use of feedback nodes with delays "not equal -1" is relatively rare and showing the enable terminal with a TRUE constant wired to is is pretty pointless. They might as well hide it. I would consider the details here not essential for regular work, except maybe for FPGA stuff..
Still, here are some details.
@Barionics wrote:
Thanks! I think this illustrates the point that CLD R asks awkward questions about things that we don't use very much!
Well, some questions are intentionally difficult to get some resolution in the top percentiles :o.
If your knowledge is sufficient, you will pass, even without knowing the answer here. 😄
@JÞB wrote:
The Z transform addions to the feedback node are well discussed in the upgrade notes of 2009.
Except that the delay setting has nothing to do with the appearance (FN vs Z-transform) and the question 39 actually shows it as plain feedback node, not as Z-transform (enable terminal shown or not). The difference is purely cosmetic (size, sign formatting of the delay value) and I am not even sure why we need two styles....
Also, both nicely auto-adjust in size for long delays:
