Reply To: Image and Spur Rejection in Fast sweep mode ( SA44B )

For spans (not RBW) of 200 kHz or less, the LO frequencies are RF + 10.694 MHz and RF + 2.921 MHz. For spans greater than 200 kHz (up to several GHz), the LO frequencies are RF + 10.7 and RF – 10.7. In both cases the signal is sampled twice.