Making Basic Measurements Using Spectrum Analyzer Mode
Resolving Small Signals Hidden by large Signals Using the Resolution Bandwidth Function
If a 30 kHz filter is used, the 60 dB bandwidth will be 450 kHz. Since the half-bandwidth (225 kHz) is wider than the frequency separation, the signals most likely will not be resolved. See Figure 4-5. (To determine resolution capability for intermediate values of amplitude level differences, consider the hlter skirts between the 3 dB and 60 dB points to be approximately straight. In this case, we simply used the 60 dB value.)
MKR 300.010 MHz
REF
PEAK
LOG 10 dB/
WA St3
SC F(
COW
4 | | |
ICENTERSRES300.000EW30 MHzkHr | “SW 30 CHZ | SPANSWP2 00020 msecMHZ |
Figure 4-5. Signal Resolution with a 30 kHz Resolution Bandwidth
