How to implement my right angle routing strategy in Ultiboard?

[程迪]

Hi,

 I want to design a PCB to save me from a lot of dirty work with SCB68 blocks. We are using many PCI-6225 cards to aquire 0-10V signals from a test rig. The signals are bundled together as 20 channels per cable including 20 signal wire and 1 AI_SENSE wire.

So I need to convert two SCSI 68pin connector to four Dsub37 female connectors for each PCI-6225 card. I used Multisim to build the schematics and Ultiboard to draw PCB. First I cannot find PCI-6225 connector's information in multisim, so I used M_series 60x1's symbol in the library and modified it to meet the datasheet of PCI-6225. 

Then when I transport the file to Utilboard, the auto routing algorithm gave me a spider web 😞 So I want to use the following right angle routing strategy to get a simpler PCB. red line is in the copper_bottom, green line in the copper_top, and blue circles are vias. the rest of the board will be covered with GND.

The only problem is: I do not know how to implement this alogrithm. Can anyone help me?

P.S. I do not have strong EMI requirements. So I think this design should be fine in my low speed DAQ application.

DI CHENG

[_user32]

You could do a few things:

1) fanout the connector part
2) identify nets and set a routing strategy in the spreadsheet (use net groups).

Pat

[_user32]

程迪,

You could also route a bus - create all signals on the 68 pin connector as part of a bus group then press (Ctrl_B) and click on all signals that you want to route within the bus and then start routing away from the connector on your preferred layer.

These best practices guides in Ultiboard should also help with routing techniques...

https://decibel.ni.com/content/docs/DOC-26701

Regards,

Pat N