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13 Modulation Accuracy (Composite EVM) Measurement
AMPTD Y Scale
Ref Position: Slot CDE/EVM View – Freq Error Window
Sets the reference position of the vertical axis for the slot-by-slot results in the frequency error window.
Key Path
AMPTD Y Scale
Mode
WCDMA
Remote Command
:DISPlay:RHO:VIEW6:WINDow3:TRACe:Y[:SCALe]:RPOSition TOP | CENTer |
BOTTom
:DISPlay:RHO:VIEW6:WINDow3:TRACe:Y[:SCALe]:RPOSition?
Example
DISP:RHO:VIEW6:WIND3:TRAC:Y:RPOS TOP
DISP:RHO:VIEW6:WIND3:TRAC:Y:RPOS?
Preset
CENTer
State Saved
Saved in instrument state.
Initial S/W Revision
Prior to A.02.00
Auto Scaling
Toggles the Auto Scaling function between On and Off. When Auto Scaling is On, pressing the Restart
front-panel key results in automatically determining scale per division and reference values based on the
measurement results.
When you set a value to either Scale/Div or Ref Value manually, Auto Scaling automatically changes to
Off.
Details of the Auto Scaling functionality depend on the selected view and window, as described in the
following sections:
•
"Auto Scaling: I/Q Error View - EVM Window" on page 2014
•
"Auto Scaling: I/Q Error View – Mag Error Window" on page 2015
•
"Auto Scaling: I/Q Error View – Phase Error Window" on page 2016
•
"Auto Scaling: Slot CDE/EVM View – Evm Window" on page 2016
•
"Auto Scaling: Slot CDE/EVM View – Peak CDE Window" on page 2017
•
"Auto Scaling: Slot CDE/EVM View – Freq Error Window" on page 2017
Key Path
AMPTD Y Scale
Initial S/W Revision
Prior to A.02.00
Auto Scaling: I/Q Error View - EVM Window
When Auto Scaling is On, pressing the Restart front-panel key automatically displays the scale per division
and reference value results for the vertical axis in the EVM window.
2014
W-CDMA & HSPA Measurement Applications Reference
Summary of Contents for E6640A
Page 80: ...Table of Contents lxxx W CDMA HSPA Measurement Applications Reference ...
Page 188: ...3 Programming the Test Set Common Commands 188 W CDMA HSPA Measurement Applications Reference ...
Page 256: ...5 Mode Functions Mode Setup 256 W CDMA HSPA Measurement Applications Reference ...
Page 324: ...6 System Functions System 324 W CDMA HSPA Measurement Applications Reference ...
Page 369: ...8 Channel Power Measurement Auto Couple W CDMA HSPA Measurement Applications Reference 369 ...
Page 389: ...8 Channel Power Measurement Marker W CDMA HSPA Measurement Applications Reference 389 ...
Page 664: ...9 ACP Measurement Auto Couple 664 W CDMA HSPA Measurement Applications Reference ...
Page 669: ...9 ACP Measurement BW W CDMA HSPA Measurement Applications Reference 669 ...
Page 984: ...9 ACP Measurement View Display 984 W CDMA HSPA Measurement Applications Reference ...
Page 1001: ...10 Spectrum Emission Mask Measurement W CDMA HSPA Measurement Applications Reference 1001 ...
Page 1668: ...12 Code Domain Measurement Auto Couple 1668 W CDMA HSPA Measurement Applications Reference ...
Page 2354: ...14 QPSK EVM Measurement 2354 W CDMA HSPA Measurement Applications Reference ...
Page 2364: ...14 QPSK EVM Measurement Auto Couple 2364 W CDMA HSPA Measurement Applications Reference ...