Input related spurs

Spurs on the LO at F_offset will manifest as a spur when the input signal frequency is offset by an equal amount.


F_offset = 200 khz on LO1
Fcenter =1G, F_LO1=5G (4GHz 1st IF)
Fspan = 10 MHz


Input signal = 999.8 MHz fed to spectrum analyzer
Display shows response at 999.8 MHz and 1000 MHz (due to lo spur)

If the RBW > 200kHz, would the power contributed by the LO spur affect the amplitude accuracy measurement of the main signal?
The detector determines power for a single point by looking at the power of IF spectrum limited by the RBW. Each display pixel is a bin consisting of several measurement points.