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12 Code Domain Measurement
Meas Setup
Preset
CPICh
State Saved
Saved in instrument state.
Range
CPICH|SCH|Symbol Based|Antenna–2 CPICH|Antenna–1 TSTD SCH|Antenna–2 TSTD SCH
Initial S/W Revision
Prior to A.02.00
Pilot-aided Timing Estimator (BTS only)
Enables additional symbol timing estimation to each detected code channel through the demod
calculation process by referring to the pilot channel (i.e. CPICH or Ant2 CPICH, accordingly) timing
correlation. It is expected to improve symbol reference vector estimation robustness for some specific
impairment conditions: for example, the signal under test is assumed to have asymmetric filter response.
Note that this function would not always be effective to any signal condition; on the contrary, turning the
key “on” may decrease the estimation robustness and measurement speed for some different cases. A
typical example it is worth to try this out is when you find that the peak symbol EVM result is unexpectedly
high compared to the RMS symbol EVM result.
Key Path
Meas Setup, Sync Type, CPICH
Meas Setup, Sync Type, Antenna–2 CPICH
Mode
WCDMA
Remote Command
[:SENSe]:CDPower:SYNC:CPICh:ESTimator OFF|ON|0|1
[:SENSe]:CDPower:SYNC:CPICh:ESTimator?
Example
CDP:SYNC:CPIC:EST 0
CDP:SYNC:CPIC:EST?
Notes
This command is effective when [:SENSe]:RADio:DEVice is set to BTS and [:SENSe]:CDPower:SYNC
[:BTS] is set to CPICh or A2CPich.
Preset
Off
State Saved
Saved in instrument state.
Range
On|Off
Initial S/W Revision
A.03.00
Sync Type (BTS)
Displays a menu that allows you to select the Sync Type. The selections are as follows:
•
CPICH - Synchronizes with the CPICH channel.
−
Pilot-aided Timing Est(imator) - Enables additional symbol timing estimation to each detected code
channel through the demod calculation process by referring to the pilot channel (CPICH) timing
correlation.
•
SCH - Synchronizes with the SCH channel.
•
Symbol Based (See Note below) - Accesses the menu for the code symbol to synchronize with. This
submenu provides the following selections:
1720
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 ...