DVM: Change

The Change() function attempts to alter the component property identified by a property_address, which provides a path to the component .

IMPORTANT! This function makes the change directly in the schematic and, thus, results in a permanent change that you may not intend to make.

Change() Syntax

Example

The following example illustrates how to change the gain value of a component on a sub-schematic. Change(U1.U3.GAIN,1)

Inline vs. Header Row Function Behavior

The Var(), GlobalVar(), Change() and Temp() functions behave differently depending on whether they are used inline or in a header row.

When used inline, Var(), GlobalVar(), Change(), and Temp() perform the actions described above.

When used in a header row, value is interpreted to be the default as listed in the header row and is used if the test has no value in its column.

For example, the following testplan with a header row ...

performs the following actions:

The test on line 2 sets the variable MAX_Q to 2n based on the value in line 2. Because columns 2 and 3 on line 2 are empty, the global variable VIN to 12 and the GAIN property on U1.U3 is change to 1.
The test on line 3 sets the global variable VIN to 5.0. Because columns 1 and 3 on line 3 are empty, MAX_Q is set to 1n and the GAIN property on U1.U3 is changed to 1.
The test on line 4 changes the GAIN property on U1.U3 to 0.5. Because columns 1 and 2 on line 4 are empty, MAX_Q is set to 1n sets VIN is set to 12.