Operating instructions

R&S ESCI SENSe:BANDwidth Subsystem
1166.6004.12 6.155 E-1
[SENSe<1|2>:]BANDwidth|BWIDth[:RESolution]:TYPE NORMal | FFT | CFILter | RRC | NOISe |
PULSe
This command switches the filter type for the resolution bandwidth between "normal" analog or FIR
filters in 1, 3, 10 steps and the FFT filtering for bandwidths <100 kHz.
The advantage of FFT filtering is the higher measurement speed compared to digital filters with
analog filter characteristic. However, FFT filters are only suitable for periodic signals, and they are
only available for span > 0 Hz.
Steep-edged channel filters and filters with RRC (Root Raised Cosine) characteristic are available.
The possible combinations of filter type and filter bandwidth are listed in the table "List of available
channel filters" in chapter 4, section "Setting Bandwidths and Sweep Time– Key BW".
The filter type PULSe selects the 6 dB bandwidths for EMI measurements rather than the 3 dB
bandwidths for spectrum analysis, which is selected with type NOISe.
Notes: - When changing the filter type, the next larger filter bandwidth is selected if the same filter
bandwidth is not available for the new filter type.
Example: "BAND:TYPE NORM"
Characteristics: *RST value: NORMal
SCPI: device-specific
Mode:all
[SENSe<1|2>:]BANDwidth|BWIDth:VIDeo 1Hz to 10MHz
This command defines the instrument's video bandwidth. Bandwidths from 10 Hz to 10 MHz in 1, 3,
10 steps are available. The command is not available if FFT filtering is switched on and the set
bandwidth is ≤ 30 kHz or if the quasi-peak detector is switched on.
Example: "BAND:VID 10kHz"
Characteristics: *RST value: - (AUTO is set to ON)
SCPI: conforming
Mode: A
[SENSe<1|2>:]BANDwidth|BWIDth:VIDeo:AUTO ON | OFF
This command either automatically couples the instrument's video bandwidth to the resolution
bandwidth or cancels the coupling.
The ratio video bandwidth/resolution bandwidth can be modified with the command
[SENSe<1|2>:]BANDwidth:VIDeo:RATio.
Note: In receiver mode, the video bandwidth is set to ten times the resolution bandwidth.
Example: "BAND:VID:AUTO OFF"
Characteristics: *RST value: ON
SCPI: conforming
Mode: A
[SENSe<1|2>:]BANDwidth|BWIDth:VIDeo:RATio 0.01 to 1000
This command defines the ratio video bandwidth (Hz) / resolution bandwidth (Hz).The ratio to be
entered is reciprocal to the ratio RBW/VBW used in manual control.
Example: "BAND:VID:RAT 3" 'Sets the coupling of video bandwidth to video
'bandwidth = 3*resolution bandwidth
Characteristics: *RST value: 3
SCPI: conforming
Mode: A