IviSpecAn Configure Frequency Center Span
IviSpecAnBase Capability Group
This VI configures the frequency range of the spectrum analyzer using the center frequency and the frequency span. If span corresponds to zero Hertz, then the spectrum analyzer operates in time-domain mode. Otherwise, spectrum analyzer operates in frequency-domain mode.
This VI modifies the IviSpecAn>>Basic Operation>>Frequency Start and IviSpecAn>>Basic Operation>>Frequency Stop properties as follows:
Frequency Start = Center Frequency - Span/2
Frequency Stop = Center Frequency + Span/2
Note:
In auto-coupled mode, resolution bandwidth (RBW), video bandwidth (VBW), and sweep time may be affected by this VI.
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instrument handle The instrument handle that you obtain from the IviSpecAn Initialize or IviSpecAn Initialize With Options VIs. |
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center frequency The center frequency of the frequency sweep.
Units: Hertz Default Value: 5.0 MHz |
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span The frequency span of the frequency sweep.
Units: Hertz Default Value: 1.0 MHz |
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error in (no error) The error in cluster can accept error information wired from VIs previously called. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs.
The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. |
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instrument handle out The instrument handle that you obtain from the IviSpecAn Initialize or IviSpecAn Initialize With Options VIs. |
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error out The error out cluster passes error or warning information out of a VI to be used by other VIs.
The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. |