Agilent Technologies Signal Analyzer N9030a - Manual (Page 516)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
AMPTD Y Scale
AMPTD Y Scale
The Amplitude front-panel key activates the Amplitude menu and selects Reference Level or
Reference Value (depending on the measurement) as the active function.
Some features in the Amplitude menu apply to multiple measurements; others apply only to
specific measurements. Keys that only apply to some measurements are blanked or grayed out in
measurements that are not supported.
Key Path Front-panel key
Initial S/W Revision Prior to A.02.00
Reference Level
The Reference Level specifies the amplitude represented by the topmost graticule line.
Changing the reference level does not restart a measurement, because it is a display function only;
instead it vertically ‘pans’ all displayed traces and markers to the new value. If a change to the
reference level changes the attenuation value (e.g. through an auto coupling), then the
measurement will be restarted.
See "Amplitude Representations" on page 517
Key Path AMPTD Y Scale
Remote Command :DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel <real>
:DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel?
Example DISP:WIND:TRAC:Y:RLEV 20 dBm
Sets the reference level to 20 dBm, which displays in the current Y axis unit. For example, if the
Y axis unit is dBµV, then 126.99 dBµV will be displayed.
Couplings If you reduce the attenuation, the analyzer may have to lower the reference level to keep it below
its allowed maximum. This allowed maximum level is specified in the “Max” row, below, along
with other variables which affect it.
When you increase attenuation, the reference level does not change.
Preset 0 dBm
State Saved Saved in instrument state
Min RefLevelMin = –170 dBm + RefLevelOffset - ExtGain.
Max The maximum Ref Level is typically:
+30 dBm + RL Offset – External Gain (for MXA and PXA)
516 Remote Language Compatibility Measurement Application Reference