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4 Input/Output Functions
Input/Output
Frequency Interpolation
This setting controls how the correction values per-bucket are calculated. We interpolate between
frequencies in either the logarithmic or linear scale.
This setting is handled and stored individually per correction set.
See
Key Path
Input/Output, Corrections, Properties
Remote Command
[:SENSe]:CORRection:CSET[1]|2|...|8:X:SPACing LINear | LOGarithmic
[:SENSe]:CORRection:CSET[1]|2|...|8:X:SPACing?
Example
CORR:CSET:X:SPAC LIN
Preset
Unaffected by a Preset. Set to Linear by Restore Input/Output Defaults.
State Saved
Saved in instrument state.
Initial S/W Revision
A.02.00
Modified at S/W Revision
A.14.00
Interpolation
For each bucket processed by the application, all of the correction factors at the frequency of interest
(center frequency of each bucket) are summed and added to the amplitude. All trace operations and post
processing treat this post-summation value as the true signal to use.
To effect this correction, the goal, for any particular start and stop frequency, is to build a correction trace,
whose number of points matches the current Sweep Points setting of the instrument, which will be used to
apply corrections on a bucket by bucket basis to the data traces.
For amplitudes that lie between two user specified frequency points, we interpolate to determine the
amplitude value. You may select either linear or logarithmic interpolation between the frequencies.
If we interpolate on a log scale, we assume that the line between the two points is a straight line on the log
scale. For example, let’s say the two points are (2,4) and (20,1). A straight line between them on a log scale
looks like:
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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 ...