Hi StudentNI,
Currently, users do not have the ability to do this.
However, you can take an alternate path which will produce
almost the same result using subcircuit parameters
Here's how you do this:
When creating a component, during the model creation stage, append
to your the SPICE ".subckt" statement
"PARAMS: param1=xx param2=xx param3=xx...", where "param1"
is an arbitrary name and its right hand side value is an arbitrary number
You can use these parameter names alone, or as part
expressions, in your SPICE model.
For example:
.SUBCKT FOO 1 2 3 4 5 PARAMS: AV=100K VRP=1 VRN=1 RO=10 Rin=10Meg
V1
1 2 DC {VRN}
R1
100 0 {(Rin/5)+1}
B1
101 0 V = { (V(V_POS)+V(V_NEG))/2 + VRP
}
...
.ENDS
When you place this component on the schematic, double click
it, and press "edit model", you will notice a special instance
parameter text box containing the parameters you defined on the .subckt line. You
can overwrite the default values for each instance of the component! This has
the same effect as the virtual component with the exception of the user
friendliness of tabular format.
Cheers,
Alec
Max
National Instruments
