Ceyear 4041 Series, User Manual

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Chapter XI Performance Characteristics Test
165
Fig 11-15 Reference Level Uncertainty and Scale Fidelity Testing Setup
1) Connect the power meter ML2437A and the power probe MA2445D and zero them, and set the calibration
factor frequency to 50 MHz.
2) Connect the test device according to Fig 15. The spectrum analyzer provides the reference frequency for the
synthesized signal generator 1464C, and the output of the signal generator is connected to the spectrum
analyzer and the power probe respectively through the power divider.
3) Set the
【
Ampt
】
[Ref Level] on 4041 series, and use the knob or step key
【
↑
】 【
↓
】
. If the maximum
reference level can be set to +30 dBm and the minimum reference level can be set to -120 dBm, the
specifications of the reference level range meet the requirements. In this case, mark
“ √ ”
in the 4041 Series
Handheld Spectrum Analyzer Record , otherwise, mark
“
×
”
in the test result column.
4) Set the output frequency of 1464C to 50 MHz, and adjust the output frequency to make the power meter
reading be -3 dBm

0.05 dB.
5) Set the spectrum analyzer as follows:
Center frequency .......................................................................................................................................... 50 MHz
Reference level .............................................................................................................................................. 0 dBm
Span ................................................................................................................................................................ 1 kHz
Logarithmic scale dB/div .................................................................................................................................. 1 dB
Resolution bandwidth ..................................................................................................................................... 10 Hz
6) Adjust the output amplitude of 1464C to make the signal 2-3 divisions below the reference level of the
spectrum analyzer.
7) Press
【
Peak
】 【
Marker
】
[Detla] on the spectrum analyzer.
8) Press
【
↓
】
key on 1464C once.
9) Set the reference level of the spectrum analyzer to the reference level listed in the 4041 Series Spectrum
Analyzer Record Sheet ; wait for completion of sweep, and press
【
Peak
】
.
BNC cable
Synthesized signal
generator
Spectrum
Analyzer
Adapter
10 MHz output
10MHz IN
2.4 mm cable
Power meter
Sensor
Power divider