Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A

52 Chapter 1

Making Basic Measurements

Making Noise Measurements

Figure 1-42 Setting the Attenuati on

8. Activate the noise marker by pressing Marker, More, Function,

MarkerNoise.

Note that the display detection automatically changed to “Avg”

which can be manually set by pressing Det/Demod,

Average (Video/RMS). The marker is floating between the maximum

and the minimum of the noise. For firmware revisions earlier than

A.08.00, the detection type when using Marker Noise changed to

sample. If you wish to use sample detection, press Det/Demod,

Detector, Sample and verify that “Ave rage Ty pe” is set to “Video

average” by pressing BW/Avg, AverageType, Video Avg. This is not

recommended as it is slower and does not increase accuracy.

The marker readout is in dBm(Hz) or dBm per unit bandwidth. See

Figure1-43. For noise power in a different bandwidth, add

. For example, for noise power in a 1 kHz bandwidth, add

or 30 dB to the noise marker value.

10 log×BW()

10 log 1000()×

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 52

Models: E7401A E7402A E7403A E7404A E7405A