Ceyear 4041 Series, User Manual

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Chapter XI Performance Characteristics Test
156
Fig 11-11 Third-Order Intermodulation Distortion Testing Setup (4 GHz to 44 GHz)
Third-order intermodulation distortion (4 GHz~13 GHz)
17) Connect the instrument as shown in Fig 11-11. Replace the RF directional coupler with millimeter wave
directional coupler, and select the appropriate low pass filter and adapter according to the test frequency. Do
not connect the directional coupler to the spectrum analyzer.
18) Set the frequency of synthesized signal generator #1 to 6 GHz, the amplitude to 0 dBm, and the RF output
on.
19) Set the frequency of synthesized signal generator #2 to 6.0001 GHz, the amplitude to -110 dBm, and the RF
output off.
20) Set the frequency of the calibration factor of the power meter to 6 GHz.
21) Disable the difference marker function of the spectrum analyzer and set the center frequency to 6 GHz, with
other settings left unchanged.
22) Repeat steps 6~16.
Third-order intermodulation distortion (13 GHz~44 GHz)
23) Connect the instrument as shown in Fig 11-11. Replace the RF directional coupler with millimeter wave
directional coupler, and select the appropriate low pass filter and adapter according to the test frequency. Do
not connect the directional coupler to the spectrum analyzer.
24) Set the frequency of the synthesized signal generator #1 to 15 GHz and amplitude to 0 dBm.
25) Set the frequency of synthesized signal generator #2 to 15.0001 GHz, the amplitude to -110 dBm, and the RF
output off.
Spectrum
Analyzer
Synthesized signal
generator #2
Sensor
2.4 mm cable
10 MHz IN
10MHz output
BNC cable BNC T connector
Millimeter wave directional coupler
Power
meter
BNC cable
Synthesized signal
generator#1
2.4 mm cable
Adapter
Adapter
Direct connection, non-cable
Adapte
r
Adapter
Adapter
Adapter
Low pass filter
Low pass filter