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what is the prerequisite layer the PCB manufacturer need

Jason

I've translated the PCB file to CAM file, anyone can help me to check if the file is integrated. I don't know what is the prerequisite layer the PCB manufacturer need and which data I must supply. The attached file is CAM file, The CAM file can be opened by a software called CAM350, I use the version 7.0. Generally, we use PADS or Protel draw a PCB, and translate to CAM file, we can see a drill data form which is filled by drill size, quantity and other informations, but  I don't find the drill data form in the CAM350 by using EAGLE! Why? If EAGLE has another file to record this information not display in the CAM350?

 

Jason

Attachments:
cam.rar.zip

  • Jason,

     

    the drill file is still missing. Use CAM processor to generate drill data. You have to use the EXCELLON device, for example, and select the layers 44, Drills and 45, Holes. Output file is usually named   .drd.

    The drd file you attached is only the drawing of the drill symbols. Gerber device is wrong here.

     

    Hope this helps.

    Richard

  • in reply to Richard_H

    Hi, Richard,

     

    Thanks for you help.

     

    I've tried the method you said to output the drd file, and I got the drd file and another file dri. I tried to open dri file by Notepad of windows, I can see the drill information, include size, number. The question is if those files are what the PCB manufacturer really want?

     

    Jason

    Attachments:
    1401.cam.rar.zip
  • in reply to Jason

    The file the board manufacturer wants is drd. It contains drill diameter settings and the drill coordinates. The dri file is just an info file.

     

    Richard

  • in reply to Richard_H

    Hi Richard,

     

    Thanks for your help!

    I will sent the file to the manufacturer and keep contact with them.

     

    Jason

  • Note: A PCB manufacturer does not require just the drill information.

    To produce a PCB, the manufacturer will first take the PCB construction information to work out how to make the PCB.

    If it is a single or double sided, then a single core is needed. If 4 layer. then either a single inner core with prepregs attached to the outside or two cores and a single prepreg to join them. Larger layers need different constructions. Ask your manufacturer.

    Then the copper layers (usually in gerber format) is used to etch the copper away from the areas required.

    Then the holes are drilled using the drill information. These two stages can be performed the other way round (drilled first then etched).

    Then the through hole plating is performed to add copper to the outer tracking and down the vias etc.

    Finally, solder resist and silkscreening is added using the correct gerber files also,

    The copper surface is then protected with either solder or organic coatings.

    All the gerber, silkscreen, signal, solder resist and drill info files are required by a PCB manufacturer.

    I import my gerbers into gcprevue from OrCad to check the files are correct before sending them.

  • in reply to Former Member

    Hi Upton,

    Thanks for your information.

    Your information is very helpful to me, can you help me to check my CAM file if it is correct?

     

    Jsaon