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80 Chapter 2
Making Complex Measurements
Making Stimulus Response Measurements
Figure 2-8 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-Axis Units,
dBm.
4. Set the start frequency to 100 kHz by pressing
FREQUENCY,
Start Freq, 100, kHz.
5. Set the stop frequency to 1 GHz by pressing
Stop Freq, 1, GHz.
6. Set the resolution bandwidth to 10 kHz by pressing
BW/Avg, Res BW,
10, kHz.
7. Set the frequency scale to log by pressing
FREQUENCY,
Scale Type (Log).
8. For E7405A analyzers with Option UKB, set the input coupling to
DC by pressing
Input, Coupling (DC).
9. 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 under test can tolerate.
NOTE To reduce ripples caused by source return loss, use 10 dB (E7401A) 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 specifications guide for more information on the
relationship between source power and source attenuation.