Re: Problems using measure command

Hi:

al davis escribió:
> On Saturday 05 December 2009, Rubén Gómez Antolí wrote:
>> I try now and run ok, thanks.
> 
> Thank you for helping to improve the documentation!

I must help in the way I can. :^)

(And, on the other hand, I have solving my own problems)

>> There are anyway to obtain a RMS wave output (with a control
>>  structure,  specific print sintaxis or anything)?
> 
> I don't understand.  Isn't that what the RMS measure does?
>

Measure give me the RMS value of a signal, this isn't exactly what I want.

>> Something that next (for control structure):
>>
>> .control
>> i=0
>> while i<=end_tran_time do
>>         measure rms_wave = rms(probe="signal(output)" begin=i
>>                            +  end=time_step_a)
>>         eval rms_vawe >> wave_file
>>         i= i+ time_step
>>         time_step_a = time_step_a + time_step
>> .end_control
> 
> ok ....
> 
> The "while" command is on the to-do list.  Once it exists, you 
> will be able to do that.
> 
> I am still trying to figure out what you are trying to do ..
>

Ok (I hope that expression exits on english too), one image better that 
a millar of words:

http://fie-conference.org/fie96/papers/219.pdf

Image at page 3 on top.

> building a file  .. "wave_file" ... which will contain a table 
> of the RMS values of the wave, in time intervals, over time.

Yes, the objectiv is print these rms values over time: a rms wave of a 
signal.

> 
> The signal is a modulated waveform, and you want to look at the 
> envelope as a time domain signal?

I'm not sure here (language problem here). In the previous control 
structure I try to attach to ecuation of:

http://en.wikipedia.org/wiki/RMS_value

but, I see that not the same in spanish Wikipedia:

http://es.wikipedia.org/wiki/Valor_eficaz


> This calls for the real Verilog-AMS, behavioral modeling.  It's 
> coming.  With that, you could make a device that would do that.
>

Ok.

>> I have still hope to not write a octave or python function
>>  for made  this. Should be more easy write a rms wave plugin?
> 
> You could make a plugin.  Look at the existing "measure" 
> plugins, particularly measure_rms.cc.
>

Meantime Verilog-AMS behavioral modeling is coming, I try to get a 
plugin or anything to do this.

> al.

Thanks for all, sorry about language problems.

Salud y Revolución.

Lobo.
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