Changes

Next, open the [[RF.Spice A/D]] Device Manager using the keyboard shortcut {{key|Ctrl+D}}. Open the menu item '''Menu > File > Import Simulation Model from Text File…''' Follow the instructions on the screen. Enter the model name and a description for your new model such as "New NPN-type BJT model". Use the [[Windows]] Explorer's Open Dialog to browse your folders, locate the model text file and open it. The program will prompt that your new model has been added to the database.  <table><tr><td>[[File:AnaTUT16 15.png|thumb|350px| Importing the new BJT process model called "MyNewBJTModel".]] </td></tr></table>

Next, go back to the circuit of the previous part. Open the property dialog of the transistor Q1 and click the {{key|New Model}} button of that dialog. the Select Model Dialog opens up where you can search for "MyNewBJTModel".  <table><tr><td>[[File:AnaTUT16 16.png|thumb|480px| Importing the new BJT process model called "MyNewBJTModel".]] </td></tr></table> Note that the process devices such as BJTs share the same model by default. Therefore, once you change the model of Q1, the model of Q2 will also change and get updated. Run a new live simulation of your circuit to examine its DC bias. As you can see from the figure below, the collector and emitter voltages of both Q1 and Q2 have changed compared to the previous part.