Rohde & Schwarz FSW13, User Manual

Page: 839 / 1150

Remote Commands
R&S
®
FSW
839 User Manual 1173.9411.02 ─ 19
Manual operation: See "VBW" on page 410
See "RBW/VBW " on page 411
See "Default Coupling" on page 412
[SENSe:]BANDwidth|BWIDth:VIDeo:RATio <Ratio>
This command defines the coupling ratio of the video bandwidth to the resolution band-
width (RBW/VBW).
Parameters:
<Ratio> Range: 0,001 to 1000
*RST: 1
Example: BAND:VID:RAT 3
Sets the coupling of video bandwidth to video bandwidth =
3*resolution bandwidth
Usage: SCPI confirmed
Manual operation: See "RBW/VBW " on page 411
[SENSe:]BANDwidth|BWIDth:VIDeo:TYPE <Mode>
This command selects the position of the video filter in the signal path.
Changing the video filter position is possible only if the resolution bandwidth is
≤
100 kHz.
Parameters:
<Mode> LINear
The video filter is applied in front of the logarithmic amplifier.
In linear mode, measurements with a logarithmic level scale
result in flatter falling edges compared to logarithmic mode. The
reason is the conversion of linear power values into logarithmic
level values: if you halve the linear power, the logarithmic level
decreases by 3
dB.
LOGarithmic
The video filter is applied after the logarithmic amplifier
*RST:
LINear
Example: BAND:VID:TYPE LIN
Video filter ahead of the logarithmic amplifier
11.7.2.2 Configuring the Sweep
Useful commands for configuring sweeps described elsewhere:
●
[SENSe:
​
]AVERage:
​
COUNt
​
on page 911
●
[SENSe:
​
]AVERage<n>[:
​
STATe<t>]
​
on page 912
●
[SENSe:
​
]AVERage<n>:
​
TYPE
​
on page 912
Setting Basic Measurement Parameters