R&S ESU Series, Operating Manual

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Operating Manual 1302.6163.12 - 03 6.157
R&S ESU Remote Control – Description of Commands
SENSe Subsystem
Characteristics: *RST value: PULSe
SCPI: device-specific
Mode: R, A
[SENSe<1|2>:]BANDwidth|BWIDth:VIDeo 1 Hz to 30 MHz
This command defines the instrument's video bandwidth. Bandwidths from 1 Hz to 30 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 quasipeak detector is switched on.
In receiver mode, the video bandwidth is set to ten times the resolution bandwidth.
Example:
"BAND:VID 10kHz"
Characteristics: *RST value: - (AUTO is set to ON)
SCPI: conform
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.
In receiver mode, the video bandwidth is set to ten times the resolution bandwidth.
The ratio video bandwidth/resolution bandwidth can be modified with the command
[SENSe<1|2>:
]BANDwidth:VIDeo:RATio
.
Example:
"BAND:VID:AUTO OFF"
Characteristics: *RST value: ON
SCPI: conform
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 operation.
In receiver mode, the video bandwidth is set to ten times the resolution bandwidth.
Example:
"BAND:VID:RAT 3"
'Sets the coupling of video bandwidth to video bandwidth = 3*resolution bandwidth
Characteristics: *RST value: 3
SCPI: conform
Mode: A
[SENSe<1|2>:]BANDwidth|BWIDth:VIDeo:TYPE LINear | LOGarithmic
This command selects the psition of the video filter in the signal path, provided that the resolution
bandwidth is
≤
100 kHz:
• If LINear is selected, the video filter is connected ahead of the logarithmic amplifier (default)
• If LOGarithmic is selected, the video filter follows the logarithmic amplifier
The essential difference between the two modes is the transient response at falling signal edges: