Special symbols available in PSpice

PSpice Special library provides parts used in simulation flow for special purposes. These are not electrical parts but are used in schematics to perform special functions. For e.g. Watch1

Part Name: Watch1

Use this component to insert .WATCH command in your simulation. This component enables you to observe voltage at node in simulation status windows while simulation is in progress as shown below

Attach this part at node or net which you will like to observe during the simulation. After this, you need to define following three parameters on symbol instance:

 ■ Analysis: Assign the one of the following three values depending upon the type of

analysis being performed:

❑ DC

❑ AC

❑ TRAN

■ HI: Assign a numeric value to define upper limit of voltage

■ LO: Assign a numeric value to define lower limit of voltage

Simulator pauses if voltage at node is outside of range defined by HI and LO

Team DesignTech

Cadence Design Systems