Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A

Chapter 1 63

Making Basic Measurements

Demodulating AM Signals (Using the Analyzer As a Fixed Tuned Receiver)

Figure 1-54 Measuring Time Parameters

10.You can turn your analyzer into a % AM indicator as follows:

a. Set trigger to free run by pressing Trig, Free Run.

b. Set the sweep time to 5 seconds by pressing Sweep, Sweep Time, 5,

c. Set the video filter to 30 Hz by pressing BW/Avg, Video BW, 30, Hz.

d. Change the reference level to position the trace at midscreen by

pressing AMPLITUDE, Ref Level, and adjacent the refer e n ce le ve l

using the front-panel knob.

e. Reset the video filter to a high value. For example, press BW/Avg,

Video BW, 100, kHz.

f. Set the sweep time to 5 milliseconds by pressing Sweep, Sweep

Time, 5, ms.

The center horizontal line of the graticule now represents 0% AM;

the top and bottom lines, 100% AM. S ee Figure1-55.

Contents

Main Signal Analysis Measurement Guide Agilent Technologies EMC Series Analyzers Notice Safety Information Warrant y LIMITATION OF WARRANTY EXCLUSIVE REMEDIES Where to Find the Latest Informa tion Page Contents Page What is in This Chapter Test Equ ipm ent Comparing Signals Signal Comparison Example 1: Page Signal Comparison Example 2: Page Resolving Signals of Equal Amplitude Resolving Signals Example: Page Page Resolving Small Signals Hidden by Large Signals Resolving Signals Example: Page Page Making Better Frequency Measurements Better Frequency Measurement Example: Page Decreasing the Frequency Span Around the Signal Decreasing the Frequency Span Example: Page Page Tracking Drifting Signals Tracking Signal Drift Example 1: Page Page Tracking Signal Drift Example 2: Page Page Page Measuring Low Level Signals Measuring Low Level Signals Example 1: Page Measuring Low Level Signals Example 2: Measuring Low Level Signals Example 3: Page Measuring Low Level Signals Example 4: Page Page Identifying Distortion Products Distortion from the Analyzer Identifying Analyzer Generated Distortion Example: Page Page Third-Order Intermodulation Distortion Identifying TOI Distortion Example: Page Page Page Measuring Signal-to-Noise Signal-to-Noise Measurement Example: S/N 70 dB/Hz10 30 kHz()log+ 25.23 dB30 kHz()== Making Noise Measurements Noise Measurement Example 1: Page Page Page Page Noise Measurement Example 2: Noise Measurement Example 3: Page Page Demodulating AM Signals (Using the Analyzer As a Fixed Tuned Receiver) Demodulating an AM Signal Example 1: Page Page Page Page Page Demodulating FM Signals Demodulating a FM Signal Example: Page Page Page Page Whats in This Chapter Required Test Equipment Making Stimulus Response Measu rements What Are Stimulus Response Measurements? Using An Analyzer With A Tracking Generator Stepping Through a Transmission Measurement Page Page Page Page Tracking Generator Unleveled Condition Measuring Device Bandwidth Page Page Measuring Stop Band Attenuation Using Log Sweep Page Page Page Page Making a Reflection Calibration Measurement Example: Reflection Calibration Measuring the Return Loss Chapter 2 87 VSWR 110 Making Complex Measurements Making a Reflection Calibration Measurement -----------------------= Table 2-1 Power to VSWR Conversion + 110 Demodulating and Listening to an AM Signal Demodulating and Listening to an AM Signal Example 1: Demodulating and Listening to an AM Signal Example 2:

Agilent Technologies - page 63

Models: E7401A E7402A E7403A E7404A E7405A