Ceyear 4051 Series, Руководство пользователя

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3 Introduction to Use
3.3 Basic measurement methods
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 If no unit is required, press ―Enter‖ or any one of the unit keys to confirm values entered. Highlight the
edited row to confirm the value entered.
3.3.1.5 Get help
The 4051 Series Signal/Spectrum Analyzer features online help: press the yellow 【 Help 】 key to call the
online help file.
3.3.2 Basic operation examples
This section introduces detailed steps of common and important basic settings and functions of the 4051
Series Signal/Spectrum Analyzer with examples to help the user rapidly know the characteristics of the
instrument and understand basic measurement methods.
Firstly, complete preparations before operation according to the following steps:
Step 1. energize and start the instrument;
Step 2. enter the system and initialize settings;
Step 3. proceed to the next operation if there is no prompt error message in the main operating interface of the
front panel.
3.3.2.1 Measure sine signal
The most common measurement task of the Series Signal Analyzer is to determine level and frequency of
signals. When measuring an unknown signal, users can use
【 Preset 】 key to switch the instrument to preset
status and start measurement. In this section, the internal calibration signal of the instrument is used as an
input to introduce how to measure a simple sine signal.
Caution
If the signal level may be higher than +30dBm (= 1 W), a power attenuator should be provided at the RF input
interface of the Series Signal Analyzer, otherwise the signal level over 30dBm will damage the RF attenuator
or the input mixer. At the same time, the total power of all current signals should be taken into consideration.
1) Display the internal 500 MHz calibration signal
Step 1. reset the instrument:
 Press
【
Preset
】
key to restore the instrument to a predefined configuration status.
Step 2. turn on the internal 500 MHz calibration signal:
 Press
【
Input/Output
】
key to pop up Input/Output setting soft menu.
 Press [Cal Port>>] and [500 MHz] to select the internal 500 MHz calibration signal.
 Press 【 Input/Output 】 , [Input Port RF Cal] to select calibration port.
At such time, the internal calibration signal of the instrument is connected to the RF input interface and the
500 MHz calibration signal can be observed on the instrument screen as shown in Fig. 3.17.