3 Short-Range Comms & IoT Mode
3.2 Modulation Analysis Measurement
State Saved Yes
Range Log Mag (dB) | Linear Mag (Abs Value) | Real (I) (Lin) | Imaginary (Q) (Lin) | I-Q | Constellation | Phase | I-
Eye | Q-Eye | Group Delay
3.2.3 Amplitude
The Amplitude front-panel key activates the Amplitude menu and selects Reference
Value as the active function.
3.2.3.1 Y Scale
The Y Scale Tab contains controls that pertain to the Y axis parameters of the
measurement. These parameters control how data on the vertical (Y) axis is
displayed and control instrument settings that affect the vertical axis.
Auto Scale
Changes the Y reference value and Scale per Division so the full trace is displayed
without clipping.
Remote Command
:DISPlay:EVM:WINDow[1]|2|...|6:Y[:SCALe]:AUTO:ONCE
Example
:DISP:EVM:WIND3:Y:AUTO:ONCE
do the Y auto scale for the third window
Ref Value
The reference value specifies the amplitude of a signal displayed on the reference
graticule line. The reference line is at the top, center, or bottom of the graticule,
depending on the value of the Ref Position function.
The Ref Value control applies only to the selected window. If the table type window
is selected, the Ref Value control is unavailable. The functionality depends on the
selected window.
Remote Command
:DISPlay:EVM:WINDow[1]|2|...|6:Y[:SCALe]:RLEVel <real>
:DISPlay:EVM:WINDow[1]|2|...|6:Y[:SCALe]:RLEVel?
Example
:DISP:EVM:WIND3:Y:RLEV 20
set the Y ref value of the third window to 20
:DISP:EVM:WIND3:Y:RLEV?
query the Y ref value of the third window
Short Range Comms & IoT Mode User's &Programmer's Reference 201
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