altium designer multi channel design- a lot of errors and warnings! - Page 1
Forum section: electronics / general

author: R Sharifi
author_rank: Newbie
timestamp: August 24, 2015, 06:43:32 am
content: Dear All,I am new to multi channel design. I have started my first project by the feature. The project has a lot of errors. I don't know what are the problems!Can any body guide me to solve it?Regards,Rasool

author: alexanderbrevig
author_rank: Frequent Contributor
timestamp: August 24, 2015, 07:39:38 am
content: We'll at least need some information about what the error is, preferably a screenshot of your schematic as wellEDIT: Did not see your zip. Images would make it more accessible for us though.EIDT2: I expected there to be something wrong with your multi channel setup but I could not see anything obvious. Here's a screendump for other more knowledgeable than me.

author: R Sharifi
author_rank: Newbie
timestamp: August 24, 2015, 08:04:31 am
content: ...

author: tszaboo
author_rank: Super Contributor
timestamp: August 24, 2015, 08:12:05 am
content: Which part do you need help with. Some of these errors are very self explanatory, and you should be able to correct them even if you are using altium the first time.

author: R Sharifi
author_rank: Newbie
timestamp: August 24, 2015, 09:29:26 am
content: Thank you for the reply.As i sad, i am new to Altium.Unfortunately, i don't know the causes of all the errors!Regards,Rasool

author: tszaboo
author_rank: Super Contributor
timestamp: August 24, 2015, 10:30:11 am
content: Quote from: R Sharifi on August 24, 2015, 09:29:26 amYou've connected inputs to unspecified nets, outputs to unspecified function nets. Basically the issue is that your opamp has specified input and output pin, and that is "the digital way" handle signals. If you connect an input through a resistor, then it is not "driven" by altium means, so it will throw you a warning. Change the component library, make the pins unspecified. That will take care for most of your errors and warnings.

author: R Sharifi
author_rank: Newbie
timestamp: August 24, 2015, 10:54:06 am
content: Bravo,I changed the type property of the op amp to graphical ( it was standard ) and all of the errors were eliminated!Thank you very much.How can I verify a reply as the answer in this forum?Regards,Rasool

author: R Sharifi
author_rank: Newbie
timestamp: August 24, 2015, 11:22:00 am
content: I have an other question.I have an 1/4 LM324 which is repeated three times. I want to it ueses of one IC, but in my multi channel design, it uses three seperate ICs!How can i solve this one?regards,Rasool

author: alexanderbrevig
author_rank: Frequent Contributor
timestamp: August 24, 2015, 11:30:05 am
content: Quote from: R Sharifi on August 24, 2015, 11:22:00 amWow, I've never thought about that one! I'm curious to see if anyone got a solution.EDIT: similar problem, no solution (http://www.edaboard.com/thread261571.html)EDIT2: maybe you'll have to map the IO to a port and then have another sheet where you manually drag out from the bus/port to the LM324 chips. After some googling it seems the REPEAT does not allow shared symbols across repeats.

author: tszaboo
author_rank: Super Contributor
timestamp: August 24, 2015, 11:55:57 am
content: Quote from: R Sharifi on August 24, 2015, 11:22:00 amThe bottom left on the sub schematic, you should see the channels that you are using, gray color. Click on it and edit the properties of the opamp, by double clicking it. There should be part 1/4, 2/4 and so on on different pages.