Datasheet
5.4. Detector
Set the detector type of analyzer for different signal measurement.
5.4.1. Detector Type
While displaying a wider span, analyzer always capture the whole data for each pixel whthin a
specified time. Then, the data will be processed (Peak Value, Average Value) by current selected
detector and shown on screen after finishing the processing.
Key points:
Select appropriate dectector type according to the application to ensure the accuracy of the
measurement.
Optional detector types are: Pos Peak, Neg Peak, Sample, Normal, RMS Avg and Voltage Avg,
the default is Pos Peak.
Each selected type is shown with a parameter icon on the left status bar of screen as Figure 2-6
below:
Figure 2-6
1. Pos Peak
Search the maximum from the samling data segment and display it. In this type, the signal will not be
missed even with very small resolution, which is very helpful for EMC test.
2. Neg Peak
Search the minimum from the sampling data segment and display it at the corresponding pixel.
3. Sample
Sample type shows the transient level of the center time in corresponding interval for each pixel of
curve. If the span is far bigger than RBW, the detector will not be such reliable. So sample type is
only applicable for Noise signal or similar ones.
4. Normal
Normal also can be named as Pos Normal or Rosenfell, that is searching both the minimum and
maximum from the sampling data segment and displays maximum at each odd pixel, minimum at
each even pixel. In this type, user can intuitively view the change range of amplitude.
5. RMS Avg
Caculate the data from the smapling data segment with mean square root operation and display the
result. This type can reject noise and easy for user to view the weak signal.
Where, VRMS denotes the mean square root value of voltage, unit is V. N denotes the number of
smples assigned for each pixel. vi denotes the envelop of the samples, unit is V.
Reference Resistance R can be used for Power calculation:
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