Trace length (pad to pad)

VectorHead schrieb:

Is there a way to get eagle to report the trace length from pad to pad?

 

Doing this by hand is not practical or accurate when trying to equalize

the phase between two different nets.

Try length.ulp or length-freq-ri.ulp.

--

Mit freundlichen Gruessen / Best regards

Richard Hammerl

  CadSoft Support -- hotline@cadsoft.de

  FAQ: http://www.cadsoft.de/faq.htm

Excuse my ignorance, what is "ULP" and what do the letters stand for as the

help file says nothing about it? How do you use it? Do you go to a separate

Eagle library and invoke it there? I am very new to Eagle and find some of

the acronyms confusing. I too would like to measure line lengths.

Don

"Richard Hammerl" <ric@cadsoft.de> wrote in message

news:g3ap7o$3mv$2@cheetah.cadsoft.de...

VectorHead schrieb:

Is there a way to get eagle to report the trace length from pad to pad?

 

Doing this by hand is not practical or accurate when trying to equalize

the phase between two different nets.

 

Try length.ulp or length-freq-ri.ulp.

 

 

--

Mit freundlichen Gruessen / Best regards

Richard Hammerl

CadSoft Support -- hotline@cadsoft.de

FAQ: http://www.cadsoft.de/faq.htm

Don Owen wrote:

Excuse my ignorance, what is "ULP" and what do the letters stand for as the

help file says nothing about it? How do you use it? Do you go to a separate

Eagle library and invoke it there? I am very new to Eagle and find some of

the acronyms confusing. I too would like to measure line lengths.

Don

 

 

"Richard Hammerl" <ric@cadsoft.de> wrote in message

news:g3ap7o$3mv$2@cheetah.cadsoft.de...

VectorHead schrieb:

Is there a way to get eagle to report the trace length from pad to pad?

 

Doing this by hand is not practical or accurate when trying to equalize

the phase between two different nets.

 

Try length.ulp or length-freq-ri.ulp.

 

 

--

Mit freundlichen Gruessen / Best regards

Richard Hammerl

CadSoft Support -- hotline@cadsoft.de

FAQ: http://www.cadsoft.de/faq.htm

ULP = "User Language Program"

These are programs which can be run either in the schematic or the board

editor window (depending on the job the ULP does).

Under the "File" menu, choose "Run" and then type the name of the ULP

you wish to run. Alternatively, just type "Run " of course)

ULPs are stored in the directory "User Language Programs" which you can

access from the Control Panel (the window you first see when you load Eagle)

A large selection comes with the normal installation, and a great many

more can be downloaded from the Cadsoft site.

John G.

Richard Hammerl a écrit :

VectorHead schrieb:

Is there a way to get eagle to report the trace length from pad to pad?

 

Doing this by hand is not practical or accurate when trying to

equalize the phase between two different nets.

 

Try length.ulp or length-freq-ri.ulp.

 

 

Hi

The to ulp files "length.ulp"  and "length-freq-ri.ulp" are wonderfull

programms.

But the problem with it is that they calculate the all lenght of a signal.

It could be nice if they can calculate the length of a signal

from a pad to pad of 2 parts and not the length of the all signal.

for exemple:

I have an bus Processor connected to 2 SDRAM.

The Data Bus goes from the processor to the 2 SDRAM.

Let's take the signal D0.

                               => Wire2 => SDRAM1.D0

Processor.D0 => Wire1 => Via

                               => Wire3 => SDRAM2.D0

Processor.D0______/----

SDRAM1.D0

                   \____________SDRAM2.D0

If I use "length.ulp"  and "length-freq-ri.ulp", the length calculated

for the signal D0 will be :

     Length Signal D0 : Wire1 + Wire2 + Wire 3

But it will be wonderfull to select : Parts Processor, SDRAM1 as

argument and the programm return :

     Length Signal D0 : Wire1 + Wire2

     Length Signal D1 : ...

     Length Signal D2 : ...

     Length Signal D3 : ...

     ...

for the all commun signals between the to parts.

This will help a lot for the lentgh matching when routing high speed Board's

I dont know if this is easy to do.

Best Regard's

AbdAllah MEZITI