R&S 1322.8003K06, User Manual

Page: 139 / 555

Common Measurement Settings
R&S
®
FSPN
139 User Manual 1179.4363.02 ─ 01
The "Dev Per Division" defines the amount of phase deviation covered by each division
of the diagram (the value multiplied by 10 is the complete value range of the y-axis).
Note that the value defined per division refers to the default display of 10 divisions on
the y-axis. If there are fewer divisions (for example because the window is reduced in
height), the range per division is adjusted accordingly.
The "Ref Position" determines the position of the reference value for the phase devia-
tion on the y-axis of the diagram. The position is a percentage of the diagram height
with 100
% corresponding to the upper diagram border. The default setting is 50 %
(diagram center).
The "Ref Value" determines the phase deviation displayed at the reference position.
Remote command:
Mode:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:AUTO
on page 352
Deviation / division:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:PDIVision
on page 396
Reference position:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RPOSition
on page 396
Reference value:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RVALue
on page 397
Auto scale once:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:AUTO
on page 352
Unit:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:UNIT
on page 397
Selecting the AF coupling mode
The "AF Coupling" property controls the automatic correction of the phase and fre-
quency offset of the input signal.
●
"DC": The phase runs according to the existing frequency offset. In addition, the
DC signal contains a phase offset of
±π
.
●
"AC": The frequency offset and phase offset are automatically corrected, i.e. the
trace is always symmetric with respect to the zero line.
Remote command:
AF coupling:
CONFigure:TRANsient[:WINDow<n>]:AF:COUPling
on page 394
Positioning the zero-phase
The R&S FSPN normalizes the last trace point in the phase diagram (right diagram
border) to zero rad or degree.
You can also define a different position of the zero phase when you select manual
"Zero Phase Ref Pos" mode. For manual zero-phase positioning, define any point on
the x-axis (time value) as the zero-phase position, and the R&S
FSPN adjusts the
trace of the phase display accordingly.
Manual selection of the zero-phase position is available for DC AF coupling mode.
Remote command:
Mode:
CONFigure:TRANsient[:WINDow<n>]:AF:COUPling:RPOint:MODE
on page 394
Position:
CONFigure:TRANsient[:WINDow<n>]:AF:COUPling:RPOint[:X]
on page 395
PN Transient Analysis Configuration