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receiver response to a CW input for E8362B

Question asked by lzw on Mar 10, 2006
Latest reply on Mar 30, 2006 by Dr_joel
Hi Gurus,

Can anyone explain a little bit about the receiver response to a CW input in the non-ratio measurement?

For example if we apply a -60 dBm 1.8 GHz CW at the port 2, and use receiver B to do the non ratio power measurement. It will give us two tones at the display. One is at 1.8 GHz and other is at the somewhere lower frequency end with offset (2nd LO+2nd IF+41.66...kHz).

From the block diagram, there is a a filter in front of the ADC.  If we do the peak power reading of the two displayed tones, it power level is almost the same. When it seems there is no effect on the image tone from the 2nd mixer?

Thanks in advance!

Sincerely yours,