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Nexxim Simulator >
Nexxim Oscillator Analysis >
Oscillator Analysis Netlist Formats >
.OSC Single-Tone Statement

.OSC Single-Tone Statement

Oscillator analysis is invoked from the netlist with a .OSC statement. The single-tone syntax is used when the circuit has only DC input sources.

.OSC TONES=val MAXK=val

The TONES value in the OSC statement specifies an initial estimate of the resonant frequency to find in the analysis. The TONES frequency must equal the value of the FREQ parameter on the oscillator probe. The TONES value overrides the probe FREQ parameter if they are not the same.

The MAXK value specifies the highest harmonic to include in the analysis.

The entry INITIAL_GUESS_ONLY=YES limits the calculation to the initial guess phase. When this entry is present, the second phase with harmonic balance analysis is not performed. By default, or when the entry INITIAL_GUESS_ONLY=NO is present, both phases of calculation are performed.

Here is an example of a single-tone oscillator analysis netlist:

*Single-tone oscillator analysis
.param freq_guess=2e6

//
// circuit details not shown

Rosc_probe 2 3 osc_probe=1 A=0.001 FREQ=freq_guess

.OSC TONES=freq_guess MAXK=31

.END

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