List of Intrinsic Variables

AEDT recognizes a set of intrinsic variables that can be used to define expressions. Intrinsic variable names are reserved and may not be used as user-defined variable names.

To view the list of Intrinsic Variables, click Project > Project Variables and select the Intrinsic Variables tab.

Name	Unit	Description
_Empty		Empty value, taken to be model default by simulator (Twin Builder)
_I1	mA	Armature current; this variable is only used in RMxprt.
_I2	mA	Exciting current; this variable is only used in RMxprt.
_I3	mA	Current; this variable is only used in RMxprt.
_I4 through _I9		Not used
_t,_u,_v		Variables to define parametric equation-based curve.
_V1 to _V9	mV	Port Voltage in user-defined model (V).
Ang	Ang	Angle. Postprocessing variable
Budget Index		Postprocessing variables; cannot be set by the user
Distance	mm
Electrical Degree	deg	Electric degree of the rotating machine; cannot be set by the user.This variable is not applicable to Maxwell; it is only used in RMxprt.
F	GHz	Frequency of the circuit/system analysis
F1, F2, F3	GHz	Frequency tones 1, 2, 3 in harmonic balance analysis. (Hz).
FNoi	GHz	Offset noise frequency in harmonic balance noise analysis.
Freq	Hz	Frequency for analysis and postprocessing; cannot be set by the user
Hmax	ns
Hmin	ns
la, lb	mA	Postprocessing variables; cannot be set by the user
Index		Identifier for a data point; cannot be set by the user
IWave Phi, IWave Theta	deg	Incident wave spherical coordinate variables. Phi is the angle from the origin in the z direction and Theta the angle from the x-axis.
Normalized Deformation, Normalized Distance		Postprocessing variables; cannot be set by the user
OP	mW	Postprocessing variables; cannot be set by the user
Pass		Post processing variables, not settable by the user.
Phase	deg	Angle of a complex number.
Phi	deg	The angle measured from the x-axis and can be from 0 to 360 degrees.
R	mm	R is the cylindrical coordinate system variable.
Rho		Rho is the spherical coordinate system variable.
Rspeed	rpm	Speed of the machine.
Spectrum	GHz	Postprocessing variable.
Temp	cel/deg	Analysis temperature (deg)
Tend	ns
Theta	deg	The angle measured from the z-axis, which is the axis perpendicular to the plane of the work space, and must be from 0 to 180 degrees.
Time	ns	Time point in transient analysis
Time0	ns	Time 0 point in a transient analysis
Vac, Vbe, Vce, Vds, Vgs	mV	Post processing variables; cannot be set by the user
X,Y,Z	mm	Point coordinate variables in the modeler.
ZAng, XRho	deg	A spherical coordinate system; cannot be set by the user

Not shown on the Intrinsic Variables tab are the Speed and Position variables that are available only in Maxwell 2D and 3D transient designs with Motion Setup. These variables are treated as intrinsic variables and are not user-editable. Their values are dynamically calculated during solve time and are expressed in standard SI units. While these variables are related to motion setups, they are not necessarily used in motion setups. For example, they may also be used with the transient design's excitations. See Motion Variables Tab for additional information.