Keysight U8903B - Page 453

Appendixes A
Keysight U8903B User’s Guide 453
Functions
(THD+N Level)
Unit
–dBg
–dBm
–dBr
–dBu
–dBV
–W
–V
– ΔV
–dBSPL
–x
Select the unit type.
Format
–Off
– Logarithmic
– Linear
–Delta
Select the reading format of the returned measurement reading.
Set to 0dB
Store the measured level as the reference level, and set the measurement
reading format to Logarithmic.
Set result as ref. from Channels 1 to 8
Store the measurement result from the selected channel as the reference
frequency.
Ref. Level
Set the reference level value.
There is only one reference level for each channel.
Ref. Imp
Set the reference impedance value.
This setting is only available when the unit is set to W.
Cal SPL
Set the calibration level value.
This setting is only available when the unit is set to dBSPL.
Functions
(THD+N Level)
Freq Lock
–Auto
– Gen Lock
– Custom
Select the searching method for the fundamental frequency.
Fund Freq
Set the fundamental frequency value.
This setting is only available when the frequency lock is set to Custom.
Analog Notch
–Enable
– Disable
Enable or disable the analog notch filter.
This filter is used to emulate the analog notch filter used in the HP8903B.
Table A-7 Analog analyzer menu tree description (continued)
Level 1 Level 2 Level 3 Description