Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A - page 77

Chapter 2 77

Making Complex Measurements

Making Stimulus Response Measurements

Measurements are made continuously, updating at the end of each

sweep. This allows you to make adjustments and see ch an g e s as th ey

happen. The single sweep mode can also be used, providing time to

study or record the data.

The N dB bandwidth measurement error is typically ±1% of the span.

Example:

Measure the 3 dB bandwidth of a 200 MHz ba ndpass filter.

1. To measure the rejection of a bandpass filter, connect the equipment

as shown in Figure 2-5. This example use s a 20 0 MHz bandpass

filter.

Figure 2-5 Transmission Measurement Test Setup

2. Perform a factory preset by pressing Preset, Factory Preset (if

present).

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

Y-AxisUnits, dBm.

4. Set the span to 100 MHz by pressing SPAN, Span, 100, MHz.

5. Set the center frequency to 200 MHz by pressing FREQUENCY,

Center Freq, 200, MHz.

6. Set the resolution bandwidth to 10kHz by pressing BW/Avg, Res BW,

10, kHz.

7. Turn on the tracking generator and if necessary, set the output

power to –10 dBm by pressing Source, Amplitude (On), –10, dBm.

CAUTION Excessive signal input may damage the DUT. Do not exceed the

maximum power that the device und er test can tolerate.

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: