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Making Basic Measurements Using Spectrum Analyzer Mode
Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions
Example: Using the maximumhold and minimum hold functions, monitor
the envelopes of a signal.
1. Connect an antenna to the spectrum analyzer input.
2. Press (PRESET), (FREQUENCY], 100
m,
and (SPAN), 20
m).
3.
Press
CAMPLITUDE),
9
I-),
ATTEN
AUTO MAN , 0 [+demv], [SPAN),
SPAN ZOOM, 500
@.
Refer to Figure 4-9. Notice that the signal has been held in the center of
the display.
4. Turn off the marker track function by pressing MK TRACK ON OFF (OFF).
5.
To measure the excursion of the signal, press
[TRACE)
then MAX BOLD A
As the signal varies, maximum hold maintains the maximum responses of
the input signal, as shown in Figure 4-9.
PEAK
LOG
10
dB/
MAX
m
MA
SI
SC
FI
COW
-
Figure 4-9. Viewing an Unstable Signal Using Max Hold A
Annotation on the left side of the screen indicates the trace mode. For
example, MA SB SC indicates trace A is in maximum-hold mode, trace
B and trace C are in store-blank mode. (See “Screen Annotation” in
Chapter 2.)
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