R3132 Series Spectrum Analyzer Operation Manual
5.2.5 Resolution Bandwidth Accuracy and Selectivity
5-22
Table 5-8 RBW Selectivity Test Setting
Calculate selectivity
15. Calculate selectivity for each RBW using the following formula, then record its
result on the performance verification record sheet.
Selectivity = (60 dB down width data)/(3 dB down width data)
RBW Frequency Span
1 MHz 20 MHz
300 kHz 5 MHz
100 kHz 2 MHz
30 kHz 500 kHz
10 kHz 200 kHz
3 kHz 50 kHz
1 kHz 20 kHz
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