Rohde & Schwarz FPC1000 User Manual page 139

FPC1000
Figure 11-2: Numerical results for an AM signal, including limit evaluation
For each aspect, the R&S FPC1000 shows the measured "Result", and, if you are
using limits, the "Upper Limit" and "Lower Limit" value you have defined, including the
"Status" of the limit check ("Pass" or "Fail").
The following results are evaluated:
●
Carrier Freq Offset
Shows the deviation of the calculated carrier frequency to the ideal carrier fre-
quency in Hz.
●
Carrier Power
Shows the power of the carrier without modulation in dBm.
●
Freq Deviation (FM domain)
Shows the frequency deviation that the carrier signal is modulated with.
●
Modulation Depth (AM domain)
●
Shows the difference in amplitude the carrier signal is modulated with.
●
+Peak / -Peak
Shows the minimum and maximum frequency deviation (FM signals) or modulation
depth (AM signals).
● ±Peak/2
Shows the average frequency deviation (FM signals) or modulation depth (AM sig-
nals).
(| +Peak | + | -Peak |) / 2
●
RMS
Shows the root mean square of the frequency deviation (FM signals) or modulation
depth (AM signals).
●
Modulation Frequency
Shows the modulation frequency.
●
SINAD
Shows the signal-to-noise-and-distortion
The SINAD measures the ratio of the total power to the power of noise and har-
monic distortions. The noise and harmonic power is calculated inside the AF spec-
trum span. The DC offset is removed before the calculation.
●
THD
User Manual 1178.4130.02 ─ 02
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Analog Demodulation
Measurements and Result Displays
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