Operating instructions

R&S ESCI SENSe:BANDwidth Subsystem
1166.6004.12 6.153 E-1
SENSe:BANDwidth Subsystem
This subsystem controls the setting of the instrument's filter bandwidths. Both groups of commands
(BANDwidth and BWIDth) perform the same functions. The measurement windows are selected by
SENSe1 (screen A) and SENSe2 (screen B).
COMMAND PARAMETERS UNIT COMMENT
[SENSe<1|2>]
:BANDwidth
[:RESolution]
:AUTO
:RATio
:TYPE
:VIDeo
:AUTO
:RATio
:TYPE
:DEMod
:BWIDth
[:RESolution]
:AUTO
:RATio
:TYPE
:VIDeo
:AUTO
:RATio
:TYPE
:DEMod
<numeric_value>
<Boolean>
<numeric_value>
NORMal | FFT | CFILter | RRC |
NOISe | PULSe
<numeric_value>
<Boolean>
<numeric_value>
LINear | LOGarithmic
<numeric_value>
<numeric_value>
<Boolean>
<numeric_value>
NORMal | FFT | CFILter | RRC |
NOISe | PULSe
<numeric_value>
<Boolean>
<numeric_value>
LINear | LOGarithmic
<numeric_value>
HZ
--
--
--
HZ
--
--
HZ
HZ
--
--
--
HZ
--
--
HZ
Option FM demodulator
Option FM demodulator
[SENSe<1|2>:]BANDwidth|BWIDth[:RESolution] <numeric_value>
This command defines the receiver IF bandwidth or, in SPECTRUM mode, the analyzer's resolution
bandwidth.
Analog resolution filters from 10 Hz to 10 MHz in 1, 3, 10 steps are available. These filters are
implemented as 4-circuit LC filters in the range from 300 kHz to 10 MHz and as digital filters with
analog characteristic in the range of 10 Hz to 100 kHz.
In addition, the EMI bandwidths 200 Hz, 9 kHz and 120 kHz are available (6 dB bandwidths each).
These bandwidths can only be obtained by entering numeric values and not with the commands
INCrement and DECrement.
The EMI bandwidths are only available when parameter PULSe is selected by command
BAND:TYPE.
FFT filters from 1 Hz to 30 kHz (3 dB bandwidth each) are also available in the frequency domain
(span > 0) for fast measurements on periodic signals. The instrument automatically switches to
analog filters above 30 kHz.
The FFT bandwidths are not available if the preselector is switched on.
A number of especially steep-edged channel filters can be selected provided that parameters
CFILter or RRC are selected using the BAND:TYPE command. The possible combinations of filter
type and filter bandwidth are listed in the table "List of available channel filters" of chapter 4, section
"Setting Bandwidths and Sweep Time– Key BW".
If the resolution bandwidth is modified in SPECTRUM mode, the coupling to the span is
automatically switched off.