R&S FSV-K7 Operating Manual page 212

®
R&S FSV-K7/K7S
Res BW (span > 0)
Opens an edit dialog box to enter a value for the resolution bandwidth. The range is
specified in the data sheet.
This softkey is only available for spectrum measurements (see
surement Result
Remote command:
[SENSe:]ADEMod:SPECtrum:BANDwidth|BWIDth[:RESolution]
Meas Time
Opens an editor for entering the measurement time of the analog demodulation. For
details on the measurement time values refer to
surement Time and Trigger
Note: For FM Stereo measurements (option K7S), the minimum measurement time is
2 ms.
Remote command:
[SENSe:]ADEMod:MTIMe
AF Filter
The bandwidth of the demodulated signal can be reduced by high pass or low pass fil-
ters and also a de-emphasis can be switched on. The selected filters are used for AM,
FM and PM demodulation in common. Individual settings are not possible.
High Pass ← AF Filter
Opens the "High Pass" selection list to switch on 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).
"None" deactivates the AF high pass filter. Default is "None".
The high pass filters are active in the following demodulation bandwidth range:
20 Hz
50 Hz:
300 Hz:
Note: for FM stereo (K7S), all filters are active at all times, as the demodulation range is always 400 kHz
Operating Manual 1176.7561.02 ─ 06
└ Weighting...................................................................................................... 213
└ None................................................................................................... 213
└ CCITT................................................................................................. 213
└ CCIR Unweighted............................................................................... 214
└ CCIR Weighted...................................................................................214
└ A Weighted......................................................................................... 214
└ Deemphasis.................................................................................................. 214
└ All AF Filter Off..............................................................................................215
Display", on page 20).
Offset",
on page 133
100 Hz ≤ demodulation bandwidth ≤ 1.6 MHz
200 Hz ≤ demodulation bandwidth ≤ 3 MHz
800 Hz ≤ demodulation bandwidth ≤ 8 MHz
FM Stereo Option R&S FSV–K7S
Instrument Functions FM Stereo (R&S FSV–K7S)
Chapter 2.1.3, "Sample Rate, Mea-
on page 13.
Chapter 2.1.10, "Mea-
on page 140
212