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32 Chapter 1
Making Basic Measurements
Tracking Drifting Signals
6. Press SPAN, Span Zoom, 500, kHz.
Notice that the signal has been held in the center of the display.
See Figure 1-24.
Figure 1-24 Signal With 500 KHz Span
7. Turn off the signal track function by pressing FREQUENCY,
Signal Track (Off).
8. To measure the excursion of the signal, press Trace/View, Max Hold.
As the signal varies, maximum hold maintains the maximum
responses of the input signal.
Annotation on the left side of the screen indicates the trace mode.
For example, M1 S2 S3 indicates trace 1 is in maximum-hold mode,
trace 2 and trace 3 are in store-blank mode.
9. Press Trace/View, Trace, to select trace 2. (Trace 2 is selected when 2
is underlined.)
10.Press Clear Write to place trace 2 in clear-write mode, which displays
the current measurement results as it sweeps. Trace 1 remains in
maximum hold mode, showing the frequency shift of the signal.
11. Slowly change the frequency of the signal generator ± 50 kHz in
1 kHz increments. Your analyzer display should look similar to
Figure 1-25.