Ceyear 4041 Series, Руководство пользователя

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Chapter XI Performance Characteristics Test
140
and record the percentage of error between the measured differential marker and the span. Two signal generators
and spectrum analyzer shall share the common reference frequency.
Note: The test may be conducted with a signal generator. First, set the center frequency and span of spectrum
analyzer, set the frequency of signal generator as the value of first signal generator, set the differential marker on
the spectrum analyzer, and then set the frequency of signal generator as the value of the second signal generator.
Read the differential marker of two signals on the spectrum analyzer and record it as the measurement value.
Signal generators and spectrum analyzer shall share the common reference frequency.
A) Testing equipment
Synthesized signal generator 1464C
b) Adapter
2.4 mm (f)-2.4 mm (f) adapter * 2
c) Cable
One BNC (m-m) cable
2.4 mm (m-m) cable (1)
d) Test steps
Fig 11-3 Span Accuracy Testing Setup
1) Connect the test instrument as shown in Fig 11-3. The spectrum analyzer provides a reference frequency for the
synthetic signal generator.
2) Set the spectrum analyzer as follows: center frequency f
0
: 22 GHz (10 GHz for 4041 D, 13.25 GHz for 4041 E,
and 16 GHz for 4041 F), reference level: 0 dBm, span: according to the item "span accuracy" in the 4041 Series
Spectrum Analyzer Record Sheet.
3) First, set the output frequency of signal generator to f
1
(f
1
= f
0
-0.4×span, i.e. the frequency span set by the
spectrum analyzer), set the power to -10 dBm, and turn on the RF output.
4) Press
【
Peak
】
,
【
Marker
】
, and [Detla] on the spectrum analyzer.
5) Set the output frequency of signal generator to f
2
(f
2
= f
0
+0.4×span) and the output power to -10 dBm.
6) Press
【
Peak
】
button on the spectrum analyzer to set the differential marker to f
2
. After the sweep is completed,
read the frequency difference Δf of two signals on the spectrum analyzer.
BNC cable
Synthesized
signal generator
Spectrum Analyzer
Adapter
10 MHz IN
2.4 mm cable
Adapter
10 MHz output