11 Specifications and Characteristics
268 N1911A/1912A P-Series Power Meters User’s Guide
Characteristic Peak Flatness
The peak flatness is the flatness of a peak- to- average ratio measurement
for various tone- separations for an equal magnitude two- tone RF input.
Figure 11- 159 refers to the relative error in peak- to- average ratio
measurements as the tone separation is varied. The measurements were
performed at –10 dBm with power sensors with 1.5 m cable lengths.
Figure 11-159P-Series sensor error in peak-to-average measurements for a two-tone input
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
0 5 10 15 20 25 30
Input tone separation frequency (MHz)
Error (dB)
HIGH
MEDIUM
LOW
OFF
( < 500MHz)
OFF
( > 500MHz)
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