Agilent Technologies 8935 Series, Руководство пользователя

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Chapter 8 217
Performance Tests
RF Analyzer Residual FM Performance Test 23
RF Analyzer Residual FM
Performance Test 23
The purpose of this test is to verify that the Test Set meets the
specification limits in PTR (Performance Test Record)
Table 9-23, “RF
Analyzer Residual FM Test 23 Record,” on page 274 . The AM/FM test
source provides a CW signal with minimal residual FM. The FM is
measured by the Test Set’s internal RF analyzer.
Figure 8-28 Setup
Procedure
1. On the AM/FM test source, set the test mode to residual FM.
2. On the Test Set:
a. Press
Preset
.
b. Select the INSTRUMENT CONFIGURE screen.
c. Set the
RF Display
field to
Freq
.
d. Select the CDMA GENERATOR screen.
e. Set the
CW RF Path
field to
Bypass
.
f. Select the RF ANALYZER screen.
g. Set the
Tune Freq
to
560 MHz
.
h. Set the
Input Port
field to
Ant
.
i. Set the
IF Filter
field to
230 kHz
.
j. Select the AF ANALYZER screen.
k. Set the
AF Anl In
field to
FM Demod
.
l. Set the
Filter 1
field to
300Hz HPF
.
m. Set the
Filter 2
field to
3kHz LPF
.
n. Set the
Detector
field to
RMS
.
ANT IN
AM/FM Test Source
LOW RESIDUAL OUTPUT