Specifications

112 Chapter 13
Stimulus Response Measurements (ESA Options 1DN and 1DQ)
Making a Stimulus Response Transmission Measurement
Stimulus Response Measurements
(ESA Options 1DN and 1DQ)
Making a Stimulus Response Transmission
Measurement
The procedure below describes how to use a built-in tracking generator
to measure the rejection of a band pass filter, a type of transmission
measurement. Refer to the concepts chapter “Stimulus Response
Measurement Concepts” on page 158 for more information a making
stimulus response measurements including adjusting the tracking
generator output power and measuring the N dB bandwidth.
Step 1. To measure the rejection of a band pass filter, connect the equipment as
shown in Figure 13-1. A 200 MHz bandpass filter as the DUT.
Figure 13-1 Transmission Measurement Test Setup
Step 2. Perform a factory preset:
Press
Preset, Factory Preset (if present).
Step 3. View the rejection of the bandpass filter. Set a wide RBW:
Press
FREQUENCY Channel, Center Freq, 200, MHz.
Press
SPAN X Scale, Span, 100, MHz.
Press
BW/Avg, Res BW, 3, MHz.
Step 4. Turn on the tracking generator:
Press
Source, Amplitude (On), –10, dBm.
CAUTION Excessive signal input may damage the DUT. Do not exceed the
maximum power that the device under test can tolerate.
NOTE To reduce ripples caused by source return loss, use 10 dB (E4401B or
E4411B) 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.