R&S FSV3000 Series - How to Optimize the Amplitude Display

Common Measurement Settings
R&S
®
FSVA3000/ R&S
®
FSV3000
375User Manual 1178.8520.02 ─ 01
Auto Scale Once
Automatically determines the optimal range and reference level position to be dis-
played for the current measurement settings.
The display is only set once; it is not adapted further if the measurement settings are
changed again.
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:AUTO ONCE on page 905
Scaling
Defines the scaling method for the y-axis.
For more information, see Chapter 8.4.1.3, "Scaling", on page 368.
"Logarithmic"
Logarithmic scaling (only available for logarithmic units - dB..., and A,
V, Watt)
"Linear with
Unit"
Linear scaling in the unit of the measured signal
"Linear Per-
cent"
Linear scaling in percentages from 0 to 100
"Absolute"
The labeling of the level lines refers to the absolute value of the refer-
ence level (not available for "Linear Percent" )
"Relative"
The scaling is in dB, relative to the reference level (only available for
logarithmic units - dB...). The upper line of the grid (reference level) is
always at 0 dB.
Remote command:
DISPlay[:WINDow<n>][:SUBWindow<w>]:TRACe<t>:Y:SPACing on page 907
DISPlay[:WINDow<n>][:SUBWindow<w>]:TRACe<t>:Y[:SCALe]:MODE
on page 906
8.4.4 How to Optimize the Amplitude Display
This section gives you some advice on how to optimize the display of the measured
signal amplitudes depending on the required evaluation.
1. Perform a measurement with the default settings to get an impression of the values
to be expected.
2. Use the "Auto Level" function ([AUTO] menu) to optimize the reference level.
3. Use the "AF Auto Scale" function ([AUTO] menu) to optimize the scaling.
4. To determine a precise level at a specific point in the signal:
● Reduce the "Range" of the y-axis to a small area around the required level. If
necessary, change the "Ref Level Position" so the required range remains visi-
ble.
● Select "Linear with Unit" scaling.
Now you can set a marker at the point in question and read the result.
Amplitude and Vertical Axis Configuration