User`s guide

29
Operation
Using the Mixers with the E4407B Spectrum Analyzer (Option AYZ)
Figure 2-2
Identification of valid responses is achieved by simply turning on the signal-identification feature. (instrument
preset selects the Image Suppress signal identification mode.) Press
Input/Output, Input Mixer, Signal Ident (On)
and note that now only the valid response (35 GHz) remains.
Press
Peak Search to place a marker on the remaining response. The signal-identification routine can introduce
slight amplitude errors which is indicated by the message Signal Ident On,
Amptd Uncal. Refer to Figure 2-3.
After identifying a signal of interest, press
Signal Ident (Off) before making final amplitude measurements. Note
that Image Suppress should only be used to identify the fundamental signal and not for accurate amplitude
measurements.
Figure 2-3