Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A Tracking Signal Drift Example 2:

30 Chapter 1

Making Basic Measurements

Tracking Drifting Signals

8. The signal frequency drift can be read from the screen if both the

signal track and marker delta functions are active. Set the analyzer

and signal generator as follows:

a. Press Marker, Delta.

b. Tune the frequency of the signal generator. The marker readout

indicates the change in frequency and amplitude as the signal

drifts. See Figure 1-21.

Figure 1-21 Using Signal Tracking to Track a Drifting Signal

Tracking Signal Drift Example 2:

The analyzer can measure the short- and long-term stability of a

source. The maximum amplitude level and the frequency drift of an

input signal trace can be dis pla yed and held by using the

maximum-hold function. You can also use the maximum hold f unctio n if

you want to determine how much of the frequency spectrum a signal

occupies.

1. Connect a signal generator to the analyzer input.

2. Set the signal generator frequency to 300M Hz with an amplitude of

−20 dBm.

3. Set the analyzer as follows:

a. Press Preset, Factory Preset (if present).

b. Set the Y-Axis Units to dBm by pressing AMPLITUDE, More,

Y-AxisUnits, dBm.

c. Set the resolution bandwidth to spectrum analyzer coupling by

pressing BW/Avg, Resolution BW (SA).

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: