Audio Analyzer Measurement Functions
4
Keysight U8903B User’s Guide
205
Format
Press the
Format
softkey to select the format of the returned measurement reading.
– Off
Selecting Off will return the measurement reading without any formatting (raw value).
– Delta
Selecting Delta will return the measurement result by deducting the reference ratio from the measured ratio. The result
will be returned in unit
Δ
dB.
– Linear
Selecting Linear will return the measurement result by dividing the measured ratio by the reference ratio. The result is
returned in unit x.
Set to 0dB
This is only available for analog analyzer.
Press the
Set to 0dB
softkey to store the measured ratio as the reference ratio, and set the measurement reading format to
Delta.
Set result as ref. from
Press the
Set result as ref. from
softkey to store the measurement result from the selected channel as the reference ratio.
Ref. Ratio
Press the
Ref. Ratio
softkey to set the reference ratio value.
Even Harmonic
Press the
Even Harmonic
softkey to display the even harmonics order selection. Press the Enter key on the navigation
panel to select the desired even harmonics order, and press the
Even Harmonic
softkey again to confirm the selection.
– ALL
– 2
– 4
– 6
– 8
Odd Harmonic
Press the
Odd Harmonic
softkey to display the odd harmonics order selection. Press the Enter key on the navigation panel
to select the desired odd harmonics order, and press the
Odd Harmonic
softkey again to confirm the selection.
– ALL
– 3
– 5
– 7
– 9
Freq Lock
This is only available for analog and
Bluetooth
analyzer.
Press the
Freq Lock
softkey to select the searching method for the fundamental frequency.
– Auto
Selecting Auto will allow the U8903B to search for the fundamental frequency automatically.
– Gen Lock
Selecting Gen Lock will allow the U8903B to search for the fundamental frequency based on the generator frequency
value of the respective generator channel. You can select the generator channel by setting the
Src Channel
in the
Meas.
Config.
menu page. This Gen Lock method is only useful if you use the internal audio generator.
– Custom
If you have a known input signal, you can define the fundamental frequency value by setting the searching method to
Custom and setting the frequency value in
Fund Freq
.
Fund Freq
Press the
Fund Freq
softkey to set the fundamental frequency value. This setting is only available when
Freq Lock
is set to
Custom.
Table 4-12
Analog/Digital/
Bluetooth
Analyzer > Functions > THD Ratio menu description (continued)
Menu
Description
Содержание U8903B
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Страница 42: ...1 Getting Started 42 Keysight U8903B User s Guide LCD display Figure 1 4 U8903B LCD display 2 3 1 4 ...
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Страница 574: ...A Appendixes 574 Keysight U8903B User s Guide Figure A 11 Bluetooth generator sine waveform generation ...