# where can find the all equation definition in ads or RFDE?

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#### liletian

##### Full Member level 6
Hi Guys
I am learning from RFDE examples, the wierd thing is I often can not find the equations they have already defined in output display windows, I am wondering where I can find all the equations they have defined. Second, I am often confusing about the equation definition, how to use the different dimension variables? Can anyone give me some suggestions on those two topics, I will greatly appreciate it.
Thanks

#### cooleyn

##### Member level 1
Search the equation or function in ADS, and the help documents are enough.

#### pancho_hideboo

Re: where can find the all equation definition in ads or RFD

Equations and constants are little different between simulation netlist and data display.

For example, you can see functios available on data display from followings.

Also you can see detail function definitions in the following AEL.
$HPEESOF_DIR/expressions/ael About functions available in simulation netlist, see followings. http://eesof.tm.agilent.com/docs/adsdoc2005A/pdf/expsim.pdf These are valid for RFDE. #### liletian ##### Full Member level 6 Re: where can find the all equation definition in ads or RFD Thank you so much, your reply is great, the two tutorials is exactly what I need. For the detail funtion definitions, I do found the files in$HPEESOF_DIR/expressions/ael,
behavioral_fun.ael dk_defined_fun.ael ptExpr.ael
behavioral_fun.atf dk_defined_fun.atf ptExpr.atf
, but how to read and edit those equation files, any suggestions?
Thanks a lot

Equations and constants are little different between simulation netlist and data display.

For example, you can see functios available on data display from followings.

Also you can see detail function definitions in the following AEL.
$HPEESOF_DIR/expressions/ael About functions available in simulation netlist, see followings. http://eesof.tm.agilent.com/docs/adsdoc2005A/pdf/expsim.pdf These are valid for RFDE. #### pancho_hideboo ##### Advanced Member level 5 Re: where can find the all equation definition in ads or RFD liletian said: Thank you so much, your reply is great, the two tutorials is exactly what I need. For the detail funtion definitions, I do found the files in$HPEESOF_DIR/expressions/ael,
behavioral_fun.ael dk_defined_fun.ael ptExpr.ael
behavioral_fun.atf dk_defined_fun.atf ptExpr.atf
, but how to read and edit those equation files, any suggestions?
If you want to see AEL file's content, you can see it by seeing "*.ael" not "*.atf".
"*.atf" is compiled version of "*.ael".
Although you can modify AEL files in $HPEESOF_DIR/expressions/ael, you should not do it. Rather you should put modified AEL files in$HOME/hpeesof/expressions/ael.