Rohde & Schwarz Scope Rider RTH - Harmonics Measurement (Option R&S RTH-K34)

Spectrum Analysis
R&S
®
Scope Rider RTH
131User Manual 1326.1578.02 ─ 12
Number of Average [n] (used for average trace) 64
Record Length [n] 6554
Start Frequency [Hz] 0
Frequency Resolution [Hz] 76293.9
Table 6-6: Spectrum (trace) data (converted to table data)
Frequency Clear/Write Max Min Average
[Hz]
[V]/[A]
*)
[V]/[A]
*)
[V]/[A]
*)
[V]/[A]
*)
0 0.000113039
76293.9 0.000226932
...
*) depends on probe setting
Converting voltage or Ampere to power values
The spectrum results are provided as voltages or in Amperes (depending on the probe
setting). To convert the these results (U/I) to power values (P), use the following equa-
tions:
)
V1
U
lg(20)U(P
dBV

)
A1
I
lg(20)I(P
dBA

)
1
R
lg(1030)U(P)mW1/
R
U
lg(10)
mW1
P
lg(10)U(P
dBV
2
dBm


)
1
R
lg(1030)I(P)
mW1
RI
lg(10)
mW1
P
lg(10)I(P
dBA
2
dBm




Where:
●
R = 50 Ω
●
P = U * I = U
2
/ R = I
2
* R
6.3 Harmonics Measurement (Option R&S RTH-K34)
With this measurement, you can easily measure the harmonics of an input signal. In
addition, the total harmonic distortion (THD) is calculated.
Harmonics Measurement (Option R&S
RTH-K34)