Rohde & Schwarz FSW Series, User Manual

Page: 114 / 371

Configuration
R&S
®
FSW-K7
114 User Manual 1173.9240.02 ─ 17
High Pass ....................................................................................................................114
Low Pass .....................................................................................................................114
Weighting .................................................................................................................... 115
Deemphasis ................................................................................................................ 116
Deactivating all AF Filters ........................................................................................... 116
High Pass
Defines a high pass filter with the given limit to separate the DC component. The filters
are indicated by the 3 dB cutoff frequency. The 50 Hz and 300 Hz filters are designed
as 2nd-order Butterworth filter (12 dB/octave). The 20 Hz filter is designed as 3rd-order
Butterworth filter (18 dB/octave).
The high pass filters are active in the following demodulation bandwidth range:
None No AF Filter used (default)
20 Hz 100 Hz ≤ demodulation bandwidth ≤ 1.6 MHz
50 Hz: 200 Hz ≤ demodulation bandwidth ≤ 3 MHz
300 Hz: 800 Hz ≤ demodulation bandwidth ≤ 8 MHz
Manual: A high pass filter with the manually defined frequency is used.
Note: If online demodulation output is active, the predefined (fixed) filters are not avail-
able. In this case, the frequency for the high pass filter must be defined manually (see
also
chapter 5.9.2, "Analog Demodulation Output Settings" , on page 124).
If a filter was already configured when online demodulation output is activated, it is
replaced by a manual filter that provides corresponding results, if possible.
Remote command:
[SENSe:
​
]FILTer<n>:
​
HPASs[:
​
STATe]
​
on page 264
[SENSe:
​
]FILTer<n>:
​
HPASs:
​
FREQuency[:
​
ABSolute]
​
on page 263
[SENSe:
​
]FILTer<n>:
​
HPASs:
​
FREQuency:
​
MANual
​
on page 263
Low Pass
Defines a low pass filter type. Relative and absolute low pass filter are available.
Demodulation