R&S FSV-K7, Operating Manual, Page: 212 / 262

FM Stereo Option R&S FSV–K7S
R&S
®
FSV-K7/K7S
212 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
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 Chapter 2.1.10, "Mea-
surement Result Display" , on page 20).
Remote command:
[SENSe:]ADEMod:SPECtrum:BANDwidth|BWIDth[:RESolution]
on page 140
Meas Time
Opens an editor for entering the measurement time of the analog demodulation. For
details on the measurement time values refer to
Chapter 2.1.3, "Sample Rate, Mea-
surement Time and Trigger Offset" , on page 13.
Note: For FM Stereo measurements (option K7S), the minimum measurement time is
2 ms.
Remote command:
[SENSe:]ADEMod:MTIMe
on page 133
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 100 Hz ≤ demodulation bandwidth ≤ 1.6 MHz
50 Hz: 200 Hz ≤ demodulation bandwidth ≤ 3 MHz
300 Hz: 800 Hz ≤ demodulation bandwidth ≤ 8 MHz
Note: for FM stereo (K7S), all filters are active at all times, as the demodulation range is always 400 kHz
Instrument Functions FM Stereo (R&S FSV–K7S)