In IF path configurations,there are wide band filter path and narrow band filter path. The narrowband filter path employs a crystal filter with 30kHz bandwidth centered at 10.7MHz for better signal selectivity, and also adds receiver gating capability for narrowband pulse measurements. But if I execute a spectrum analysis using option 090(SA),dose the system change the path to WBF?In the block diagram it didn't show any WBF's info so I also want to kown the bandwidth of the wide band filter.I think it should wider than the anti-alise filter's band width,because the FFT after ADC will give a 33MHz band on both side of LO frequency,otherwise FFT bandwidth can't get that wide.Really appreciate that.
There is no filter in the wideband path, so the bandwidth is only limited by the ADC filter. And yes, when you create a Spectrum Analyzer channel, the default IF path is wideband. In fact, wideband is default for all the measurement apps with the exception of IMD and narrowband pulse mode.