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Re: Gerbv

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On 17/08/2018 2:58 pm, gnuarm.deletethisbit@gmail.com wrote:
> On Thursday, August 16, 2018 at 9:52:10 PM UTC-4, Chris wrote:
>> On 17/08/2018 5:22 am, gnuarm.deletethisbit@gmail.com wrote:
>>> Anyone using Gerbv as a Gerber viewer?  I'm having a problem where a few drill locations in a drill file look out of location.  I seem to have narrowed the problem to the use of trailing zero suppression.  I can verify the drill file (which contains only line feeds it appears, so not so easy to view) has a few entries with the trailing zero suppressed.  In Gerbv these are all being interpreted as if zero suppression were off.  In fact, it tells me when it translates automatically, it is using no zero suppression.  If I manually turn on trailing zero suppression it so munges the drill file that no drill show up on the screen at all and if I click the zoom to extents button it takes me far off the board and shows me a small area with no visible features.
>>>
>>> Is this broken in Gerbv?  I'm going to ask the fab house to turn off zero suppression and see if that fixes the problem at my end.
>>>
>>> Rick C.
>>>
>>
>> FWIW, I only ever send the drill ident.gbr map and never checked the
>> .drl file.
>>
>> What I see is similar to you: that gerbv seems to be interpreting values
>> at 1/10 of what they should be. For example:
>>
>> In the original .drl file a coordinate such as X07904Y02588 is being
>> interpreted as X = 790.4mil Y = 258.8mil instead of 7904mil & 2588mil resp.
>>
>> If I manually edit the drl file to remove the leading zeros and add a
>> trailing one then it comes good.
>>
>> This is with Gerbv v2.6A. Like I said: FWIW.
> 
> What program is generating your file?

I'm using DesignSpark PCB 8.1.1 to generate the Gerbers.

> I'm also using v2.6a.  Gerbv seems to have manual controls but defaults to automatic.  I tried setting trailing zero suppresion and it didn't work.  You seem to be using both trailing and leading zero suppresion which won't work anywhere.  If you lop off a zero at the beginning and one at the end, who could you figure out where the zeros were lopped off?  In your case I would have the generating software not trailing zero suppress (it doesn't save so much in the file anyway).  Or if there is nothing in the 0.1 mil digit, you can tell Gerbv there are only 3 bits past the decimal point.  Don't know if this will work since this feature seems to be less than tested.
> 
> In my case I found I needed a command, INCH,LZ which says work in inches and leading zeros are included which means missing digits are assumed to be trailing zeros.
> 
> Rick C.

This sort of thing isn't bread and butter stuff for me so that's one 
reason I haven't paid much (any!) attention to the .drl drawing 
particularly. I just used a cheapo PCB fab found at random on the 'net 
and they didn't require/ask for .drl files.

Sorry I can't be of more help.
--
Chris.

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Gerbv gnuarm.deletethisbit@gmail.com - 2018-08-16 12:22 -0700
  Re: Gerbv Chris <c@b.a> - 2018-08-17 11:52 +1000
    Re: Gerbv gnuarm.deletethisbit@gmail.com - 2018-08-16 21:58 -0700
      Re: Gerbv Jack <jack4747@gmail.com> - 2018-08-16 22:41 -0700
      Re: Gerbv Chris <c@b.a> - 2018-08-17 17:28 +1000
  Re: Gerbv Theo Markettos <theom+news@chiark.greenend.org.uk> - 2018-08-17 12:34 +0100
    Re: Gerbv Tim <tim@bugblat.invalid> - 2018-08-17 14:27 +0100
      Re: Gerbv Theo Markettos <theom+news@chiark.greenend.org.uk> - 2018-08-17 19:15 +0100
        Re: Gerbv Tim <tim@bugblat.invalid> - 2018-08-17 22:27 +0100
          Re: Gerbv Theo Markettos <theom+news@chiark.greenend.org.uk> - 2018-08-18 13:13 +0100
            Re: Gerbv Dave Nadler <drn@nadler.com> - 2018-08-18 08:27 -0700
            Re: Gerbv Dimiter_Popoff <dp@tgi-sci.com> - 2018-08-18 20:22 +0300
              Re: Gerbv Chris <xxx.syseng.yyy@gfsys.co.uk> - 2018-08-18 23:33 +0100
                Re: Gerbv Dimiter_Popoff <dp@tgi-sci.com> - 2018-08-19 13:09 +0300
                Re: Gerbv Chris <xxx.syseng.yyy@gfsys.co.uk> - 2018-08-19 23:30 +0100
                Re: Gerbv Dimiter_Popoff <dp@tgi-sci.com> - 2018-08-20 01:44 +0300
                Re: Gerbv Chris <xxx.syseng.yyy@gfsys.co.uk> - 2018-08-20 01:12 +0100
                Re: Gerbv Dimiter_Popoff <dp@tgi-sci.com> - 2018-08-20 12:58 +0300
                Re: Gerbv Chris <xxx.syseng.yyy@gfsys.co.uk> - 2018-08-20 13:55 +0100
                Re: Gerbv lasselangwadtchristensen@gmail.com - 2018-08-21 11:22 -0700
    Re: Gerbv gnuarm.deletethisbit@gmail.com - 2018-08-17 07:37 -0700

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