Generate Sweep |
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pi620_GenerateSweep ViStatus pi620_GenerateSweep (ViSession instrumentHandle, ViUInt32 signalType, ViReal64 symmetry_, ViUInt32 mode, ViReal64 startFrequency_kHz, ViReal64 endFrequency_kHz, ViReal64 frequency_step_size_kHz, ViReal64 frequency_step_time_ms); Purpose Generate a signal with a sweep on the output of the active channel of the instrument. This function will automatically fill the memory and adjust the update clock and counter step to get the desired Frequencies. Parameter List instrumentHandle Variable Type ViSession The ViSession handle that you obtain from the pi620_init function. The handle identifies a particular instrument session.
Default Value: None
signalType Variable Type ViUInt32 Shape of the signal:
0 = Sine 1 = Triangle 2 = Square symmetry_ Variable Type ViReal64 symmetry of the signal type if Triangle or Square. A symmetry of 50 percent will result in a square with a duty cycle of 50% or a triangle with equal up-going and down-going ramps. mode Variable Type ViUInt32 Sweep mode:
0 = Signal starts at Start Frequency and sweeps to End Frequency with Frequency step size with Frequency step time duration at each step. When End Frequency is reached it will sweep back to Start Frequency. This will repeat till another mode is selected.
1 = Signal sweeps Start Frequency to End Frequency with FSK pin high or from End Frequency to Start Frequency with FSK pin low. startFrequency_kHz Variable Type ViReal64 Lower frequency of the signal. endFrequency_kHz Variable Type ViReal64 Upper frequency of the signal. frequency_step_size_kHz Variable Type ViReal64 Increment/decrement value of signal frequency. frequency_step_time_ms Variable Type ViReal64 The time spent at each intermediate frequency. Return Value Refer to Function Return Value page. |
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