Ceyear 4051 Series, User Manual

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4. Operating Instruction
4.1 Function operation guide
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Method 2. Adjust the measurement span through the Up/Down key and knob on the front panel. The span step
corresponding to the Up/Down key on the front panel of 4051 Series Signal/Spectrum Analyzer is based on
way of 1-2-5-10, while the step size corresponding to the knob is 1/10 of maximum order of current span.
Method 3. If the frequency of display signal is drifting, you can enable the signal track function, then the
Series Signal Analyzer will automatically adjust the center frequency based on the signal peak.
Prompt
The span is likely to change automatically when the center frequency is changed.
For 4051 Series Signal/Spectrum Analyzer, the minimum value of frequency display range is -100 MHz,
while the maximum value is related to the maximum nominal value of analyzer:
 4051A 4.1 GHz;
 4051B 9.1 GHz;
 4051C 13.5GHz;
 4051D 18.3GHz;
 4051E
 4051F
27GHz;
40.4GHz;
 4051G 45.5GHz;
 4051H
50.2
GHz.
 4051L 70GHz.
When the center frequency is adjusted to approach the lowest frequency limit, if current span is > 2 × (center
fre 100 MHz), the current span will automatically change to = 2 × (center frequency value + 100
MHz). When the center frequency is adjusted to approach the nominal highest frequency limit of Series Signal
Analyzer, if current span is > 2 × (maximum value of display range - center frequency value), the current span
will automatically change to = 2 × (maximum value of display range - center frequency value).
Prompt
Rules of signal track
When the signal track function is enabled, the Series Signal Analyzer, with the current marker frequency value
as center and 1/10 of current measurement span as search span, will set the frequency value corresponding to
the signal peak searched to the center frequency of next measurement.
Method 4. Adjust the center frequency, start frequency and stop frequency through 【 Marker → 】 .
For the use and operation of 【 Marker → 】 key, please refer to the ―4.1.3 Operation guidance on general
analysis and display function‖ herein.
5) How to change frequency offset
If you hope that the frequency measurement range displayed on screen is to be corrected within the frequency
measurement range of Series Signal Analyzer during actual work, the correction value of frequency offset can
be set with number keys on the front panel by pressing
【
Frequency
】
key on the front panel and activating
[Freq Offset] menu. The step size set for frequency offset corresponding to the Up/Down key and knob on the
front panel is same as frequency step size.
4.1.2.3 Settings of bandwidth, filter and sweep
The section mainly describes the meaning of the parameters corresponding to
【
BW
】
key and
【
Sweep
】
key and provides the operation guidance. When the Series Signal Analyzer is executing the spectrum
measurement, the
【 BW 】 key and 【 Sweep 】 key can be used to set the parameters including resolution