Rohde & Schwarz FSW Series, User Manual

Page: 24 / 371

Measurements and Result Displays
R&S
®
FSW-K7
24 User Manual 1173.9240.02 ─ 17
Label Description
SINAD Signal-to-noise-and-distortion
(Calculated only if AF Spectrum is displayed)
Measures the ratio of the total power to the power of noise and harmonic distortions.
The noise and harmonic power is calculated inside the AF spectrum span. The DC
offset is removed before the calculation.
 







 
power distortion noise
power total
log 20 dB SINAD
THD Total harmonic distortion
The ratio of the harmonics to the fundamental and harmonics. All harmonics inside
the AF spectrum span are considered up to the tenth harmonic.
(Calculated only if AF Spectrum is displayed)
 














 






1
2
2
2
log 20
i
i
i
i
U
U
dB THD
In addition, the following general information for the input signal is provided:
●
Carrier Power: the power of the carrier without modulation
●
Carrier Offset: the deviation of the calculated carrier frequency to the ideal carrier
frequency
●
Modulation Depth (AM or RF Time Domain only): the difference in amplitude the
carrier signal is modulated with
Remote command:
LAY:ADD? '1',RIGH,RSUM
, see
LAYout:
​
ADD[:
​
WINDow]?
​
on page 284
Results:
CALCulate:
​
MARKer:
​
FUNCtion:
​
ADEMod:
​
PM[:
​
RESult<t>]?
​
on page 294
Marker Table
Displays a table with the current marker values for the active markers.
This table may be displayed automatically if configured accordingly (see "Marker Table
Display" on page 138).
Remote command:
LAY:ADD? '1',RIGH, MTAB
, see
LAYout:
​
ADD[:
​
WINDow]?
​
on page 284
Results:
CALCulate<n>:
​
MARKer<m>:
​
X
​
on page 301
CALCulate<n>:
​
MARKer<m>:
​
Y?
​
on page 302