Connections For A High Dynamic Range Swept If Conversion Loss Measurement - Agilent Technologies 8719D User Manual

Connections for a High Dynamic Range Swept IF Conversion Loss Measurement

14. To set the frequency offset mode LO frequency, press:
15. 'Ib select the converter type and low-side LO measurement coniiguration, press:
In this low-side LO, up converter measurement, the analyzer's source frequency range wiII
be offset lower than the receiver frequency range. The source frequency range can be
determined from the following equation:
receiver frequency range (100 - 1000 MHz) - LO frequency (1500 MHz) = 1.6-2.5 GHz
16. To view the conversion loss in the best vertical resolution, press:
Figure 3-13 shows the conversion loss of this low-side LO, mixer with output altering.
Notice that the dynamic range from the pass band to the noise floor is welI above
dynamic range Iimit of the R Channel. If the mixer under test also contained amplification,
then this dynamic range would have been even greater due to the conversion gain of the
mixer.
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F I L T E R
E X T E R N A L
Figure 3-12.
M a k i n g M i x e r
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