Agilent Technologies 4294A, Operating Manual

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42 Chapter 2
Learning Operation Basics
Results of Analysis
Results of Analysis
Determine the Self-resonance Frequency and Resonant Impedance
Step 1. Press the
[A]
key to activate Trace A.
Step 2. Press the
[Search]
key to display the Search menu. The main marker (a trace marker
identified by number 0) appears in the center of the graph.
Step 3. Press the
SEARCH TRK on OFF
key to turn on the search tracking function (the key label
should change to
SEARCH TRK ON off
). When this function is enabled, the instrument
performs a search action upon completion of each sweep cycle.
Step 4. Press the
MIN
key to move the main marker to the minimum |Z| value. Since the search
tracking function is enabled, the instrument detects and moves the main marker to the
minimum |Z| value each time it has completed one sweep cycle.
You can determine the self-resonance frequency and resonant impedance by reading the
sweep parameter (frequency) and measurement parameter values indicated by the main
marker that appears in the upper-left area of the graph for Trace A. In the example shown
in Figure 2-9, the DUT exhibits its self-resonance frequency and resonant impedance at
approximately 5.13 MHz and 155 m
W , respectively.
Figure 2-9 Result of Searching for the Self-Resonance Frequency (with the Search Tracking
Function On)