Teledyne LeCroy Spectrum Analyzer - Manual (Page 6)

Spectrum Analyzer Software
4 921324 Rev A
6. Choose a weighting Window to be used for the FFT.
7. Change Scale to alter the spectrum trace based on your reference signal. Enter new
values for any of the following:

Output units of measure:

dBm

dBV

dBmV

dBµV

V rms

Arms

Reference Level – Lowering/raising this value moves the trace up/down on the grid.

Scale – Amplitude/div. Lowering/raising this value has the effect of “zooming” in/out
on the trace. (This alters the appearance of the spectrum trace; it does not open a
separate zoom trace.)
Tip: An easy way to rescale the trace is to touch-and-drag: a) the trace or the Center
Frequency indicator left or right, which changes the Center Frequency setting; b) the
Zero Point indicator up or down, which changes the Reference Level setting.
8. Select to display additional traces:

Show Source displays the pre-transform source trace.

Show Zoom displays a zoom of the source trace.
Each trace opens in a separate grid from the spectrum trace, and a new descriptor box
appears on screen. Touch the descriptor box to open the trace setup dialog and make
further adjustments.