Agilent Technologies 4395A, Ручное изменение

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Data Processing
Absolute Squared (ABS
2
)
This calculates the power of the spectrum.
Video A veraging
Video A veraging is one of the noise reduction techniques . The video bandwidth can be selected
to be RBW/1, RBW/3, RBW/10, RBW/100, or RBW/300.
Detection
This detects the value of a given display point in one of three modes: positive , negative ,
and sample . F or more information, see \Detection Modes" under the heading \Network
Measurement Basics" in this chapter .
Attenuator A djustment
This adjustment corrects the value to what it was before being attenuated.
A veraging
Refer to \A veraging" under \Data Processing for Network Measurement" in this chapter .
Frequency Characteristics Level Correction
This process digitally corrects for frequency response errors in the analog down-conversion
path.
Raw Data Arrays
These arrays store the results of all the data produced by the peak detector . These arrays
are directly accessible via GPIB or by using the internal disk drive or the memory disk. In
spectrum analyzer mode , row data arrays hold only the real number part of values .
Memory Arrays
If the data-to-memory operation is performed (using the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DATA ! MEMORY softkey), the data
arrays are copied into the memory arrays (data trace arrays are also copied into the memory
trace arrays at same time). These arrays are accessible using the internal disk drive or the
memory disk. When accessed via GPIB , these arrays are read-only . are also output via GPIB ,
but data cannot be input into them via GPIB .
If memory is displayed, the data from the memory arrays goes through the same data
processing ow path as the data from the data arrays .
F ormat/Unit conversion
This converts the measured values (dB value) to other unit (dBV , dBV , watt, an d volt). When
noise measurement is selected, this divides measured values by the equivalent noise bandwidth
to measure noise level directly .
Data Hold
Refer to \Data Hold" under \Data Processing for Network Measurement" in this chapter .
Data Math
Refer to \Data Math" under \Data Processing for Network Measurement" in this chapter .
A-8 Basic Measurement Theory