Measurement Basics
R&S
®
FSW-K7
27
User Manual 1173.9240.02 ─ 23
4.3 Sample Rate and Demodulation Bandwidth
The maximum demodulation bandwidths that can be obtained during the measure-
ment, depending on the sample rate, are listed in the tables below for different demod-
ulation filter types. The allowed value range of the measurement time and trigger offset
depends on the selected demodulation bandwidth and demodulation filter. If the AF fil-
ter or the AF trigger are not active, the measurement time increases by 20
%.
A maximum of 24 million samples can be captured, assuming sufficient memory is
available; thus the maximum measurement time can be determined according to the
following formula:
Meas.time
max
= Sample count
max
/ sample rate
The minimum trigger offset is (-Meas.time
max
)
Table 4-1: Available demodulation bandwidths and corresponding sample rates
Demodulation BW
Sample Rate (Flat Top)
Sample Rate (Gaussian Top)
100 Hz
122.0703125 Hz
400 Hz
200 Hz
244.140625 Hz
800 Hz
400 Hz
488.28125 Hz
1.6 kHz
800 Hz
976.5625 Hz
3.2 kHz
1.6 kHz
1.953125 kHz
6.4 kHz
3.2 kHz
3.90625 kHz
12.8 kHz
6.4 kHz
7.8125 kHz
25.6 kHz
12.5 kHz
15.625 kHz
50 kHz
25 kHz
31.25 kHz
100 kHz
50 kHz
62.5 kHz
200 kHz
100 kHz
125 kHz
400 kHz
200 kHz
250 kHz
800 kHz
400 kHz
500 kHz
1.6 MHz
800 kHz
1 MHz
3.2 MHz
1.6 MHz
2 MHz
6.4 MHz
3 MHz
4 MHz
12 MHz
5 MHz
8 MHz
20 MHz
8 MHz
16 MHz
32 MHz
10 MHz
32 MHz
40 MHz
18 MHz*
1
32 MHz
72 MHz
28 MHz*
1)
64 MHz
112 MHz
Sample Rate and Demodulation Bandwidth
