Mirror Freq. Spectrum (NB-IoT)
Cleared
When is selected, the entire frequency spectrum will be flipped around the carrier frequency.
Uses for this function include
- Undoing the effect of swapping I and Q connections on the measurement instrument.
- Enabling demodulation of a signal whose frequency spectrum is flipped at that point in the RF Radio Frequency: A generic term for radio-based technologies, operating between the Low Frequency range (30k Hz) and the Extra High Frequency range (300 GHz). signal path.
- Compensating for a design error in which the upconverter has mirrored the frequency spectrum.
This parameter is nearly identical to the non-demod-specific parameter found under . The difference is that the non-demod-specific parameter applies to all results, including the pre-demod spectrum and any measured frequency error. The NB-IoT-specific affects only post-demod results (not the pre-demod spectrum) and does not change the sign of the measured frequency error.
External Down Converter
When using an external down converter, specify the User Correction Spectrum "Normal" parameter and make sure the "Mirror Spectrum" parameter is not selected () and use the Mirror Frequency parameter in the MeasSetup Frequency dialog box instead ().
See Also
