HP 8591C Bedienungsanleitung Seite 215

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I
-
Making Measurements Using Spectrum Analyzer Mode
Stimulus-Response Measurements
Stepping
through
the
Measurement
There are four basic steps in performing a stimulus-response measurement,
whether it be a transmission or reflection measurement: set up the spectrum
analyzer settings, calibrate, normalize, and measure.
1. If necessary, perform the self-calibration routine for the tracking generator
described in “Performing the Tracking Generator Self-Calibration Routine”
in Chapter 2.
2. To measure the rejection of a low-pass filter, connect the equipment as
shown in Figure 5-4. This example uses a
hlter
with a cut-off frequency of
300 MHz as the DUT.
SPECTRUM ANALYZER
RF
OUT
LJ
I
NPUl
DUT
pul18c
Figure 5-4. Transmission Measurement Test Setup
CAUTION
Excessive signal input may damage the DUT. Do not exceed the maximum
power that the device under test can tolerate.
3. Activate the tracking generator menu by pressing
[AUXCTRL)
and
Track
Gen
To activate the tracking-generator power level, press
SRC PWR
OM
OFF until ON is underlined. See Figure 5-5.
5-15
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