R&S ESCI Limit Lines
1166.6004.12 4.189 E-1
X Axis - Select interpolation
Linear or logarithmic interpolation can be carried out between the frequency
reference points of the table. The ENTER key toggles between LIN and LOG
selection.
IEC/IEEE-bus commands CALC:LIM3:CONT:SPAC LIN
CALC:LIM3:UPP:SPAC LIN
CALC:LIM3:LOW:SPAC LIN
Scaling - selection of absolute or relative scaling
The limit line can either be scaled in absolute (frequency or time) or relative units.
Any of the unit keys may be used to toggle between ABSOLUTE and RELATIVE,
the cursor must be positioned in the X Scaling or the Y Scaling line.
X-Scaling ABSOLUTE The frequencies or times are interpreted as
absolute physical units.
X-Scaling RELATIVE In the data point table, the frequencies are referred
to the currently set center frequency. In time
domain mode, the left boundary of the diagram
constitutes the reference.
Y-Scaling ABSOLUTE The limit values refer to absolute levels or
voltages.
Y-Scaling RELATIVE The limit values refer to the reference level (Ref
Level) or, in case a reference line is set, to the
reference line.
Limit values with the unit dB are always relative
values.
The RELATIVE scaling is always suitable, if masks for bursts are to be
defined in the time domain, or if masks for modulated signals are required in
the frequency domain.
An X offset with half the sweep time may be entered in order to shift the mask
in the time domain into the center of screen.
IEC/IEEE-bus command: CALC:LIM3:CONT:MODE ABS
CALC:LIM3:UPP:MODE ABS
CALC:LIM3:LOW:MODE ABS
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