Operating instructions

SENSe:BANDwidth Subsystem R&S ESCI
1166.6004.12 6.154 E-1
If the resolution bandwidth is modified in FM DEMOD mode, the coupling to the demodulation
bandwidth is automatically switched off.
Example: "BAND 120 kHz" 'Sets the IF bandwidth to 120 kHz
Characteristics: *RST value: - (AUTO is set to ON)
SCPI: conforming
Mode: all
[SENSe<1|2>:]BANDwidth|BWIDth[:RESolution]:AUTO ON | OFF
In RECEIVER mode with activated quasi peak detector, this command either automatically couples
the IF bandwidth of the receiver to the frequency range or cancels the coupling .
In SPECTRUM mode, this command either automatically couples the resolution bandwidth of the
instrument to the span or cancels the coupling.In FM DEMOD mode, this command either
automatically couples the IF bandwidth of the instrument to the demodulation bandwidth or cancels
the coupling (BW
RBW
= 10 * BW
Demod
).
In FM DEMOD mode, the coupling refers to the demodulation bandwidth (BW
RBW
= 10 * BW
Demod
).
The automatic coupling adapts the resolution bandwidth to the currently set frequency span
according to the relationship between frequency span and resolution bandwidth. The 6 dB
bandwidths 200 Hz, 9 kHz and 120 kHz and the channel filters available from Version 1.10 are not
set by the automatic coupling.
The ratio resolution bandwidth/span can be modified with the command
[SENSe<1|2>:]BANDwidth[:RESolution]:RATio.
Example: "BAND:AUTO OFF" 'Switches off the coupling of the IF bandwidth to the
'frequency range (receiver mode).
'Switches off the coupling of the resolution bandwidth to
'the span (analyzer mode).
'Switches off the coupling of the IF bandwidth to the
'demodulation bandwidth (FM demod mode).
Characteristics: *RST value: ON
SCPI: conforming
Mode: R, A-F, FM
[SENSe<1|2>:]BANDwidth|BWIDth[:RESolution]:RATio 0.0001 to 1
This command defines the ratio resolution bandwidth (Hz) / span (Hz). The ratio to be entered is
reciprocal to the ratio span/RBW used in manual control.
Example: "BAND:RAT 0.1"
Characteristics: *RST value: 0.02 with BAND:TYPE NORMal or RBW > 30 kHz
0.01 with BAND:TYPE FFT for RBW ≤ 30 kHz
SCPI: conforming
Mode: A