Simulating the sample design

1. start the simulator accusim analog_design (substitute your file name)
2. setup the analysis type
   1. select the Setup Analysis item from the palette menu
   2. select the Transient box on the pop-up menu. A transient analysis simulates the circuit with arbitrarily changing inputs. The other analysis types are DCOP, DC Sweep, and AC Sweep. These options simulate the circuit under DC Operating conditions, a sweep of several DC values, and a sweep of several AC waveforms respectively.
   3. enter 20N in the Maximum Time Step item. This setup tells the simulator to simulate for 100 nano-seconds, with a normal time step of 1 nano-second and a maximum time step under steady-state conditions of 20 nano-seconds.
   4. select OK on the pop-up form.
3. monitor the I/O signals
   1. select the I/O signals by clicking the left mouse button on the nets in the schematic view window
   2. select the Trace item on the palette menu
   3. select the Unselect All item on the palette menu
4. apply the stimulus
   1. select the Force item on the palette menu
   2. enter enb in the Signal field
   3. select the Pulse button
   4. enter 5 in the Pulse* field
   5. enter 12.5N in the Width* field
   6. enter 25N in the Period* field
   7. enter .1N in the Rise* and Fall* fields
   8. click on the OK button
   9. select the Force item on the palette menu
   10. enter d_in in the Signal field
   11. select the PWL button
   12. enter the following data in the Time* and Value* fields
       

                   0  0
               6.25N  0
               6.30N  5
              31.25N  5
              31.30N  0
              68.75N  0
              68.80N  5

5. run the simulation by typing run
6. change the load capacitor value
   1. select the capacitor by clicking the left mouse button on it in the schematic window
   2. select the Edit --> Property --> Change from the schematic window pop-up menu
   3. select the instpar = 10P item from the pop-up list
   4. select OK on the pop-up form
   5. enter 15P in the Value field of the pop-up form
   6. select OK on the pop-up form
   7. notice that the property value turns red. This means that there is an entry in the back annotation file for this property.
7. re-run the simulation by typing run and notice the change in the output.
8. exit accusim
   1. select the Close item from the window manager border menu
   2. select the Save Design Viewpoint item of the pop-up form
   3. unselect the Save Accusim Setup item of the pop-up form
   4. select the OK button of the pop-up form
9. Incorporate the back annotation into the schematic
   1. start design architect
   2. open the design viewpoint
      1. select the Design Sheet item on the palette menu
      2. enter your analog design name in the Component Name field
      3. enter default in the Viewpoint Name* field
      4. select the OK button on the pop-up form.
   3. merge the back-annotations into the schematic using the Miscellaneous --> Merge Annotations --> All item from the menu bar
   4. check and save the design and close the design architect