Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 528 / 813

CALCulate R&S
®
ZVA/ZVB/ZVT
1145.1084.12 6.66 E-6
–
The response value of a segment that is created implicitly, e.g. an upper
limit line segment, is –20 dB. *RST value
SCPI, Command
Types
Confirmed, with query.
Example:
CALC:LIM:LOW -10, 0, 0, -10
Define the following lower and (default) upper limit line segments:
CALC:LIM:DISP ON
Show the limit line segments in the active diagram.
CALCulate<Ch/Tr>:LIMit:LOWer:FEED
<stimulus_offset>,<response_offset>[,<trace_name>]
Generates a lower limit line using the stimulus values of a data or memory trace and specified offset
values.
<Ch/Tr> Channel number used to identify the active trace. This trace
provides the stimulus data for the limit line unless another trace
<trace_name> is specified.
<stimulus_offset> Stimulus offset value, used to shift all imported limit line
segments in horizontal direction.
Range [def. unit] -1000 GHz to +1000 GHz [Hz]
*RST value 0 Hz
<response_offset> Response offset value, used to shift all imported limit line
segments in vertical direction.
Range [def. unit] -10
12
dB to +10
12
dB [dB]
*RST value 0 dB
<trace_name> Name of the selected trace as used e.g. in
CALCulate<Ch>:PARameter:SDEFine.
If no trace name is
specified the analyzer uses the active trace no. <Ch/Tr>.
SCPI, Command
Types Device-specific, no query.
Example:
CALC:LIM:LOW:FEED 1 GHZ, -10
Use the stimulus values of the active trace, shifted by 1 GHz to
the right and decreased by 10 dB, to create a lower limit line.
CALC:LIM:LOW:SHIF -3; CALC:LIM:CONT:SHIF 1 GHz
Shift the limit line by an additional –3 dB in vertical and by 1 GHz
in horizontal direction. If an upper limit line exists it is also shifted.