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Hspice .tran error: warning: no tran outputs specified ... analysis omitted

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ehsan_r34

ehsan_r34

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Hi,

In edit LL output I found this : "warning: no tran outputs specified ... analysis omitted"

and when I open Avanwaves I see : "No data in design..."

Please help me
 

no probe statements specified

Probably u are using a "probe" option and then not giving any " .probe v() i()"

statement... thats y its not doing the tran analysis...
when u use use a probe option it is a must to mention the nodes on wich output is to be checked...
 

hspice .tran

Use :

.tran STEP=10p STOP=0.5n
.options accurate=1 NUMDGT=8 DELMAX=1n method=gear INGOLD=2 POST=1
 

    ehsan_r34

    ehsan_r34

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tran hspice

newbiedes's reply is probably correct.
Please take a look if you have *.tr0 output. If your simulation ends up correct but there is only warning message as above, then missing probe v(), i() would be the reason. In Hxpice 2008.03 version, it showed **warning** no probe statements specified, thus, .tr# omitted, which is clearer than your mentioned message
 

no probe statements specified, thus

Thank you very much

But I haven't use .probe

Thank you SADEGH, It works. Please let me know why this warning happen.
Also tell me about .option in detail.
 

probe tran

.probe=0
saving all NETs values (voltage)
and you do not have to define exactly points which you want to view
this kinf of TRAN simulation is very slow but good enough for "debug"
if you using
.PROBe=1
then you also have to use
.PROBE TRAN
+V(what signal you need)
+I(what signal you need)

defined in such case sih\gnals values during the simulation will be saved and you can explore them later in *.tr0, *.tr1 etc files
good luck
 

hspice .option post=1 probe

You may see any Hspice tutorial for a detailed explanation of .tran.

The important point is the .option part, which will make the transient analysis accurate. I believe you are using Hspice 2006, 2007 or 2008 since this option was added after 2005. For fast simulations and if you do not want to see the waveforms, just comment the .options line. This is very fast, but rather inaccurate. For accurate simulations, use the line and you are happily done.

cheers
 

no .tr0 output hspice

wow.. that's sound new to me, thanks for update, Sadegh.j as I always insert .option line from the 1st day of my design life, really not knowing about that.
 

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