Source

The Source column allows you to specify the subcircuit definition and parameters for a DVM source. The source column can be blank.

Source Configurations

The following table describes the acceptable source configurations.

Function Description
Dc() Configures a DC source with the specified DC voltage.
Ramp() Configures a PWL source with the specified voltage levels.
Pulse() Configures a PWL source with the specified voltage levels
Saw() Configures a sawtooth source with the specified parameters.
Squ() Configures a square wave source with the specified parameters.
Tri() Configures a triangle wave source with the specified parameters.
Pul() Configures a pulse source with the specified parameters.
PulZRFT() Configures a zero rise and fall time pulse source with the specified parameters.
Sin() Configures a sinusoidal source with the specified parameters.
Cos() Configures a cosinusoidal source with the specified parameters.
Exp() Configures an aperiodic exponential decay pulse source with the specified parameters.
AcFixed() Configures a standard sine wave input voltage source with the specified RMS voltage and frequency.
AcDropout() Configures an AC source with line dropout starting from and returning to the specified RMS voltage and frequency.
AcStartup() Configures an AC source which starts at 0 volts and turns into an AC voltage source with specified RMS voltage and frequency.
AcSurgeSag() Configures an AC source which starts at the normal RMS voltage and steps to the RMS sag or surge voltage before returning to the normal RMS voltage.
AcQSW() Configures a Quasi-Square-Wave source with specified pulse parameters.
AcGlitch() Configures an AC source with the specified RMS voltage and frequency.
  • A glitch abnormality occurs at the specified phase angle (0 to 180 degrees).
  • During the specified pulse width, the source voltage is equal to the glitch voltage if the source voltage is positive. If the source voltage is negative it is equal to (-1) * the glitch voltage.
  • The maximum rise/fall time of the glitch can be set with the slew rate optional parameter described below.
Also the rise time of the underlying square wave voltage source is set with the rise time parameter. >This source can be configured to simultate a broad range of abnormal AC Line voltage conditions.
SubCkt() Configures the subcircuit definition using SUBCKT_NAME.
Source() Configures the subcircuit to use the specified DC voltage without changing the subcircuit definition.

Most often used with Full Power Assist to change input voltage levels without overriding configuration changes resulting from the use of an Analysis/Objective specification.
AcSource() Changes the subcircuit parameters but does not change the subcircuit definition.

Most often used with Full Power Assist to change input voltage levels without overriding configuration changes resulting from the use of an Analysis/Objective specification.

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Configuring Managed Sources

To configure managed sources, follow these steps:

  1. Right click on the DVM control symbol and select Edit Additional Parameters.
  2. From the next menu, select Configure Sources.

Subcircuit definitions for the various source configurations are defined in the following topics

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