14 QPSK EVM Measurement
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For the purpose of this example, we have set the Average/Hold Number to 10, thus we have only traces 0
thru 10. The Spectrogram was started at 02:28:08:700 pm on April 25, 2012 (that is, 700 ms after 2:28:08
pm), although the screen dump itself shows a duifferent time, as it was taken ten minutes after the
Spectrogram data. Trace 0 is showing a start time of 5.30 seconds, meaning 5.3 secodns after the
Spectrogram started (trace 10 has a strat time of 0, as it was the first trace taken but has now rolled up into
the tenth trace slot).
The Meas Results file, when opened, shows the header data and ten traces of trace data. Below is an
extract from the result file for the above display. Note the start time of 20120425142808700 showing in
the last row before the first DATA row, and the relative time of 5.299231048 showing in the first DATA row:
Result Type
Spectrogram
MeasResult
Swept SA
A.11.00.01
N9020A
503 508 513 526 ALL ALV B1C B1X
B25 B2X B40 BAB BBA CR3 CRP DP2
DRD EA3 EDP EMC EP1 ERC ESC ESP
EXM FSA HBA K03 LFE MPB P03 P08
P13 P26 PFR RTL RTS S40 SB1 SEC
SM1 UK6 YAS YAV
1
Segment
0
Number of Points
1001
Sweep Time
0.523333333
Start Frequency
5999984415
Stop Frequency
6000009415
Average Count
0
Average Type
LogPower(Video)
RBW
240
RBW Filter
Gaussian
RBW Filter BW
3dB
VBW
240
Sweep Type
Swept
X Axis Scale
Lin
PreAmp State
Off
PreAmp Band
Low
Trigger Source
Free
Trigger Level
1.2
Trigger Slope
Positive
Trigger Delay
0
Phase Noise Optimization
Wide
Swept If Gain
Low
2458
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 ...