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  3. Problems running a pnoise PM jitter simulation from a script...

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Problems running a pnoise PM jitter simulation from a script (solved)

wintermute
wintermute over 13 years ago

Hi everyone,

I need to run a bunch of pnoise simulations using jitter as noise type with the PM button checked. This works fine when I run it directly from the ADE window but when I try to save an OCEAN script and run that instead it doesn't quite work. When I run it this way and then open the Direct Plot > Main Form-window the results that are available seem to be the same as if I'd run the simulation with the FM rather than the PM button checked in the pnoise setup window. The relevant part of the script that I get when saving looks like this:

analysis('pnoise ?relharmnum "1"  ?start "1k"  ?stop "1G" 
        ?maxsideband "10"  ?oprobe "/I8"  ?noisetypeUI "jitter"  ?crossingdirection "rise" 
        ?thresholdvalue "0.75"  ?annotate "status"  )

I have tried doing this using a probe (I used the idc component from analogLib for this) as well as a node voltage for output. I've also looked into the documentation (mainly the OCEAN and SpectreRF reference documents) and searched the internet quite a bit to see if there's any way of making the script use PM but so far I haven't had any luck with this. I would therefore like to ask if anyone here might know what's going on here and/or if there's any way to make the script use PM rather than FM.

I'm using IC5.1.415 and Spectre 7.1.1 32bit.

 

EDIT:
I finally managed to solve this. My supervisor tipped me of about the possibility to view the netlist and the simulation commands by choosing Simulation > Netlist > Display in the ADE. Looking at the commands being output when the simulation is run from the ADE I found that these didn't quite match what was being saved to the script. In the script I got
         ?noisetypeUI "jitter"
which should be changed to
         ?noisetype "pmjitter"
in order to run a jitter PM simulation rather than a jitter FM one.

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