Rohde & Schwarz R&S UPP, User Manual

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Instrument Functions
R&S
®
UPP
540 User Manual 1411.1055.32 ─ 10
Source
Used to determine how the lower limit is set.
"Value " Available in the graphics subsystems
Sweep, FFT, Waveform, Bar Graph
Input of a fixed limit value for the Source = Value setting.
In the parameter field below, a lower limit constant for all X values is
entered in the unit which has been selected in the Unit
Funct Track
parameter field. If a relative unit is selected, the associated reference
value (a few parameter fields higher up) is used.
All scans of a trace are compared to this common limit and the limit
violations are marked.
"File" Available in the graphics subsystems
Sweep, FFT, Bar Graph
Available to all graphic systems except Waveform.
Limits are checked by using a limit file.
The name of the limit file is entered in the parameter field below.
This limit file contains reference values for a limit curve in a special
format (see
Chapter 5.54.4, "Limit Files" , on page 619).
Each new scan interpolates the entries in the limit file to the X values
of the scan.
All scans of a trace are compared to this common limit curve and the
limit violations are marked.
Curve, Spectrum and Bar Graph Display