R&S ESR Series User Manual page 311

®
R&S ESR
●
The table contains the number of samples used in the calculation and, for each
trace, the following values:
–
–
–
● CISPR specifications vs R&S ESR
● Examples of CISPR
● Softkeys for CISPR APD
CISPR specifications vs R&S ESR specifications
The following table compares the characteristics of the R&S ESR against the CISPR
specifications for APD measurements.
Dynamic range of the amplitude
Amplitude accuracy
Maximum measurement time
Minimum measurable probability
Amplitude level assignment
Sampling rate
Display resolution of APD mea-
surement data
●
Use the intermittent measurement if the dead time is < 1 % of the total measure-
ment time.
●
Measure the probabilities corresponding to all pre-assigned levels simultaneously.
●
The R&S ESR records the probability of time for each of the 625 disturbance lev-
els.
Examples of CISPR APD
APD of the inherent noise of the R&S ESR
The following example shows the APD of the inherent noise of the R&S ESR (input ter-
minated by 50 Ω.
User Manual 1175.7068.02 ─ 12
Average amplitude
Peak amplitude
Crest factor
APD...................................................................................... 308
Measurements.............................................................. 311
CISPR 16-1-1
> 60 dB
better than ±2.7 dB
≥ 2 min
10
min. 2 amplitude levels with a res-
olution of 0.25 dB or better
≥10 MSamples
(using an RBW of 1 MHz)
< 0.25 dB
specifications.................................................308
-7
Spectrum Measurements
Measurements
R&S ESR
> 75 dB
< 0.2 dB (typical)
2 min (no dead time)
-7
10
691 levels with a resolution of
0.145 dB
16 MSamples (with RBW = 1
MHz)
4.0 MSamples (with RBW = 120
kHz)
0.26 MSamples (with RBW = 9
kHz
5.8 kSamples (with RBW = 200
Hz)
Default: 0.145 dB for range = 100
dB
Min. 0.00145 dB for range = 1 dB
308