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The User-defined Window
Selecting USER SAVD 1 forces the HP 3563A to use the time waveform stored in the SAVE DATA
#1 data block as the window. This feature allows you to apply your own waveform as a window.
There are three ways to store a waveform in the SAVE DATA # 1 memory block:
1. Measure a time waveform then store it using the SAVE RECALL menu. For information on
this technique, refer to "Saving and Recalling States and Traces" in chapter 8.
2. Synthesize a frequency response curve, transform it to the time domain using FFT-
additional math on the time-domain trace, then store it using SAVE RECALL. Chapter 17
explains how to synthesize the frequency response, and chapter 15 shows how to use the math
functions.
3. Create a waveform on an external controller and transmit it over the HP-IB. For information
on this technique, refer to the HP 3563A Programming Manual.
The user window is multiplied by the time record in the time domain. To normalize the window, use
the X marker and the DIV math function.
Viewing Windowed Data
The HP 3563A allows you to view the effects of the force and exponential windows on time records.
To do this, select either of these windows, select an averaging type then activate previewing (in the
AVG menu). Next select the TIME REC 1 or 2 display in the FILTRD INPUT menu (under MEAS
DISP). Press INST WNDOWD to view the windowed data or INST to view the data before the
window is applied.
To adjust the exponential window, use INST to display the dotted line representing the window.
When it is ready, press TIME REC 1 or 2 again, then press INST WNDOWD to show the effect of the
window. Then press YES to accept the record. Be careful when making numeric entries while
previewing: the
1
and 0 keys represent YES and
numeric entry.
Using The Linear Resolution Mode
N O
if the analyzer is not specifically looking for a
Selecting a Window
\
do any
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