DRD file info dispalyed incorrectly in Gerber viewers

There are a couple of settings in GCprevue that can affect this.

When loading or reloading the drill file there is a dialog box with a

"Format" button.

Verify that the inches/metric setting is correct and that the precision is

set correct.

"David Bailey" <baileymon@charter.net> wrote in message

news:i1e91f$vbu$1@cheetah.cadsoft.de...

>I am using Eagle Pro 5.9 (I'm upgrading after I get this next board out).

>I have done three other boards and not had this problem.

>

When viewing the CAM Processor outputs for my current board on GCPrevue

18.2.2, all the Gerber files look fine, but when I import in the DRD file,

the displayed positions of the drill holes are around  (but not exactly)

10 times the correct places.  I see a little set of displayed Gerbers in

the lower left corner and a big screen of drill holes.

>

I have reread the manual, checked this support mail site, redone several

things with the design files including starting over several times, and

double checked my CAM processor files.

>

As I said, I have done three other boards and have had no problems

displaying/verifying the CAM output files on GCPrevue.

Just in case, I tried another Gerber viewer that ran online, submitted the

Gerber and DRD files, and got the same results.

>

Finally, I looked at the DRD file, and the drill positions are correct

with respect to the placement on the board.  They should not be displayed

with a scale.  And I cannot find a scale factor anywhere.

>

I am a firm believer in cockpit error.  But this has got me perplexed as I

cannot see anything I have setup incorrectly.

>

Since the dimensions in the DRD file appears to agree with the hole

positions in the Gerbers, I am probably ok to send this out, but I don't

see why 2 different Geber viewer have a problem with displaying the DRD

output from this board but not the other 3 boards.

>

any ideas?

>

Thanks, Dave

>

>

On 7/12/2010 1:26 AM, David Bailey wrote:

I am using Eagle Pro 5.9 (I'm upgrading after I get this next board

out).  I have done three other boards and not had this problem.

>

When viewing the CAM Processor outputs for my current board on GCPrevue

18.2.2, all the Gerber files look fine, but when I import in the DRD

file, the displayed positions of the drill holes are around (but not

exactly) 10 times the correct places. I see a little set of displayed

Gerbers in the lower left corner and a big screen of drill holes.

>

I have reread the manual, checked this support mail site, redone several

things with the design files including starting over several times, and

double checked my CAM processor files.

>

As I said, I have done three other boards and have had no problems

displaying/verifying the CAM output files on GCPrevue.

Just in case, I tried another Gerber viewer that ran online, submitted

the Gerber and DRD files, and got the same results.

>

Finally, I looked at the DRD file, and the drill positions are correct

with respect to the placement on the board. They should not be displayed

with a scale. And I cannot find a scale factor anywhere.

>

I am a firm believer in cockpit error. But this has got me perplexed as

I cannot see anything I have setup incorrectly.

>

Since the dimensions in the DRD file appears to agree with the hole

positions in the Gerbers, I am probably ok to send this out, but I don't

see why 2 different Geber viewer have a problem with displaying the DRD

output from this board but not the other 3 boards.

>

any ideas?

>

Thanks, Dave

>

>

>

Hi David,

I've had this issue too. Here's what's going on EAGLE outputs the

excellon DRD file in 2.4 leading zeros suppressed absolute:inches

format. GC-Prevue tries to automatically determine the format your drill

file is in, however it doesn't always make the right determination. When

it messes up it usually selects 2.3 which is off by a decimal place

which explains why your holes are off by a factor of 10.

When you import your files, check the format and make sure it's 2.4

leading zeros suppressed absolute: inches.

hth,

Jorge Garcia

Cadsoft Computer, Inc.

Thanks to both Doug and Jorge

I guess since the first 3 boards had no problems being brougt into a Gerber

viewer, it made it hard to see problem,

So I had a problem missing the obvious of the precision being bought in

wrong as 3 instead of 4.  Changed it when re-importing the DRD file and all

is well again.

As I said, I believe in cockpit error first and foremost.

Thanks again.  Dave

"Doug" <doug@midnitesolar.com> wrote in message

news:i1f8bi$v3e$1@cheetah.cadsoft.de...

There are a couple of settings in GCprevue that can affect this.

When loading or reloading the drill file there is a dialog box with a

"Format" button.

Verify that the inches/metric setting is correct and that the precision is

set correct.

>

>

"David Bailey" <baileymon@charter.net> wrote in message

news:i1e91f$vbu$1@cheetah.cadsoft.de...

>>I am using Eagle Pro 5.9 (I'm upgrading after I get this next board out).

>>I have done three other boards and not had this problem.

>>

>> When viewing the CAM Processor outputs for my current board on GCPrevue

>> 18.2.2, all the Gerber files look fine, but when I import in the DRD

>> file, the displayed positions of the drill holes are around  (but not

>> exactly) 10 times the correct places.  I see a little set of displayed

>> Gerbers in the lower left corner and a big screen of drill holes.

>>

>> I have reread the manual, checked this support mail site, redone several

>> things with the design files including starting over several times, and

>> double checked my CAM processor files.

>>

>> As I said, I have done three other boards and have had no problems

>> displaying/verifying the CAM output files on GCPrevue.

>> Just in case, I tried another Gerber viewer that ran online, submitted

>> the Gerber and DRD files, and got the same results.

>>

>> Finally, I looked at the DRD file, and the drill positions are correct

>> with respect to the placement on the board.  They should not be displayed

>> with a scale.  And I cannot find a scale factor anywhere.

>>

>> I am a firm believer in cockpit error.  But this has got me perplexed as

>> I cannot see anything I have setup incorrectly.

>>

>> Since the dimensions in the DRD file appears to agree with the hole

>> positions in the Gerbers, I am probably ok to send this out, but I don't

>> see why 2 different Geber viewer have a problem with displaying the DRD

>> output from this board but not the other 3 boards.

>>

>> any ideas?

>>

>> Thanks, Dave

>>

>>

>>

>