problem with hspice measure

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pathto_teraze

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Hi,
I want to do some integration in Hspice .measure
such as:

.measure tran integ (v(1)-v(2))*idd from=20n to=50n

but I cannot get it to work.

Anyone can tell me the right syntax?

Thank you very much!
teraze
 

I have a question:
Do you use a explicit current source called idd?, for example:

idd 0 1 1mA

If you try to measure the current, put in the same branch a voltage source with 0V like this:

idd 0 aux 1mA
vdummy aux 1 0V

And put in the .measure statement:

.measure tran integ (v(1)-v(2))*i(vdummy) from=20n to=50n

Regards,
 

Hi,
Thank you for your reply.
Actually, idd refers to the current along a specific net, for example, in my circuit, a net is called "test1".

I have put a voltage source with 0V on this specific net named v22, and I measure the current goes through this net as i(v22)

then when I do
.measure tran inge_pwr integ (v(1)-v(2))*i(v22) from=20n to=50n

I have these errors like:
Errorinput.sp:44) unknow word before or at "-"

It looks like hspice do not accept "+" or "-" in its integration.

I don't know whether my understanding is right.

Need your help.

Thanks

 

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