Ceyear 4051 Series, User Manual

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8. Specifications and test methods
8.5 Performance characteristics test
678
Average Num 10
Set as Off when the pre-amplifier option is provided.
3) Turn on Trace Average. Set Peak Search for the 4051 analyzer, set the peak value as the center frequency,
turn on Noise Marker and set as follows:
Span: 100Hz
Reference level -80 dBm
Attenuation 0 dB
Single measurement
Fig. 8.14 Schematic diagram of display average noise level test
4) Read the mark amplitude. If this value is less than or equal to the requirement of the 4051 analyzer, record
it as the display average noise level within the range from 10 MHz to 1GHz into the corresponding test
item of the 4051 Record Sheet. Otherwise, it should be considered as noncompliant.
Average noise display (1GHz to 2GHz)
5) Reset 4051 and set as follows:
Reference level -40 dBm
Start frequency: 1GHz
Stop Frequency: 2GHz
Marker All Markers Off
6) Repeat step 3 ~ 4.
7) Read the mark amplitude. If this value is less than or equal to the requirement of the 4051 analyzer, record
it as the display average noise level within the range from 1GHz ~ 2 GHz into the corresponding test item
of the 4051 Record Sheet. Otherwise, it should be considered as noncompliant.
Average noise display (2GHz to 3GHz)
8) Reset 4051 and set as follows:
Reference level -50 dBm
Start frequency: 2GHz
Stop Frequency: 3GHz
Marker All Markers Off
9) Repeat step 3 ~ 4.