Agilent Technologies E7401A, E7402A, E7403A, E7404A, E7405A - page 75

Chapter 2 75

Making Complex Measurements

Making Stimulus Response Measurements

12.Reconnect the DUT to the analyzer. Note that the units of the

reference level have changed to dB, indicating that this is now a

relative measurement.

Press Trace/View, More, Normalize, Norm Ref Posn to change the

normalized reference position. Arrowheads at the left and right

edges of the graticule mark the normalized reference position, or the

position where 0 dB insertion loss (transmission measurements) or

0 dB return loss (reflection me a surements) will normally resid e .

Using the knob results in a change in the position of the normalized

trace, within the range of the graticule.

13.To measure the rejection of the filter 45 MHz above the center of the

bandpass, press Marker, 200, MHz (to ensure that the marker is in the

center of the signal), and then press Delta, 45, MHz. The marker

readout displays the rejection of the filter at 45 MHz above the

center of the bandpass. See Figure2-4.

NOTE Because the default trace is comprised of 401 discrete points, the

indicated marker frequency may differ slightly from the frequency that

you entered. Due to the horizontal resolution of the trace, the marker

frequency value will be rounded to within 0.25% of the span of the value

entered. If the analyzer is an ESA-E serie s wi th firmware revision

A.04.00 or later, the number of sweep points may be set to any value

between 101 and 8192.

Figure 2-4 Measure the Rejecti o n Ra n ge

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: