Reply To: Image and Spur Rejection in Fast sweep mode ( SA44B ) Forums › SA Series Discussions › Image and Spur Rejection in Fast sweep mode ( SA44B ) › Reply To: Image and Spur Rejection in Fast sweep mode ( SA44B ) Justin CrooksModerator Justin Crooks August 10, 2016 at 9:05 am The 2.9 MHz IF is used when span is 200 kHz or less, to provide superior image rejection for narrow-band sweeps. It sweeps once with a 10.7 MHz IF, and once with a 2.9 MHz IF, and compares results to provide the cleanest spectrum possible.
