Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A - page 72

72 Chapter 2

Making Complex Measurements

Making Stimulus Response Measurements

Figure 2-1 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. Since we are only interested in the rejection of the bandpass filter,

tune the analyzer center frequency and span to center the bandpass

response and display the rejection ±50 MHz from the center of the

bandpass.

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

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

Center Freq, 200, MHz.

5. Set the resolution bandwidth to 3M Hz by pressing BW/Avg, ResBW,

3, MHz.

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

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

See Figure 2-2.

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

maximum power that the device under te st can t o le ra te.

NOTE To reduce ripples caused by source return loss, use 10 dB (E740 1A) or

8 dB (all other models) or greater tracking generator output

attenuation. Tracking generator output attenuation is normally a

function of the source power selected. However, the output attenuation

may be controlled in the Source menu. Refer to specifications and

characteristics in your specif ications guide for more informat i on on the

relationship between source power and source attenuation.

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: