HP 3562A Operating Manual page 26

Single Decade Measu rement
As mentioned previously, measurement spans of
Log Resolution mode.
measurement will
1.
Set New Span Press the FREQ key to activate the fre­
quency selection menu. The start fre­
quency and measurement span can
now be entered with the corresponding
softkeys. For this measurement, start fre­
quency was selected to be
the span was set to
back to Table 3-1 for a summary of the
available start, stop and span values.
2. Check Input Ranges With the narrower frequency span,
the input ranges may need to be
changed due to the band-limited, con­
stant-power noise source. Autoranging
will handle this quickly
3.
Start Press the yellow START key The results
for the crystal resonator are shown in
Figure 3-3.
Analysis via Display Selections
I n the Log Resolution mode the available measu rement d isplays are: frequency
response, coherence fu nction, channel 1 power spectru m , channel
trum and the c ross power spectrum. Exam ples from the results of the precedi n g
measu rement are given t o i l l u strate s o m e o f the available vertical t race coord i nates.
14
Frequency Response Measurements with Log arithmic Resolution
To
demonstrate entry of frequency parameters, a
be
performed with the crystal resonator.
5
1
kHz and
decade. Refer
Figure
Figure 3-5: Three-decade coherence functIOn
1
to 5 decades can be selected in
on decade
e
Figure 3-3
2 power spec­
3-4.
One-decade frequency response phase