Rohde & Schwarz ZVL series, Руководство по эксплуатации

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R&S ZVL Command Reference
Instrument-Control Commands
Operating Manual 1303.6580.32-05
371
CALCulate<Chn>:LIMit:UPPer[:DATA] <start resp>,<stop resp>{,<start
resp>,<stop resp>}
Defines the response (y-axis) values of the upper limit line and/or creates new limit line segments.
The commands
CALCulate<Chn>:LIMit:LOWer[:DATA]
and
CALCulate<Chn>:LIMit:UPPer[:DATA]
use a fixed numbering scheme for limit line
segments: Upper limit line segments are assigned odd numbers (1, 3, 5,...), lower limit line
segments are assigned even numbers (2, 4, 6,...).
Rules for creating segments
The following rules apply to an active trace with n existing upper and n existing lower limit line segments:
An odd number of values is rejected; an error message –109,"Missing parameter..." is generated.
An even number of 2*k values updates or generates k upper limit line segments.
For n > k the response values of all existing upper limit line segments no. 1, 3, ...,2*k–1 are
updated, the existing upper and lower limit line segments no. 2*k+1, ..., 2*n are deleted. The
existing lower limit line segments no. 2, 4, 2*k are not affected.
For n < k the response values of the upper limit line segments no. 1, 3 to 2*n–1 are updated, the
upper limit line segments 2*n+1, 2*n+3,..., 2*k–1 are generated with default stimulus values (see
CALCulate<Chn>:LIMit:CONTrol[:DATA]
. In addition, the missing lower limit line segments
2*n+2, 2*n+4,..., 2*k are generated with default stimulus and response values
<Chn>
Channel number used to identify the active trace.
<start resp>,
<stop resp>
Pair(s) of response values.
Range [def. unit]
Almost no restriction for limit segments; see
Rules for Limit Line Definition.
[dB]
*RST value –
The response value of a segment that is created implicitly, e.g. an lower limit
line segment, is –20 dB.
SCPI, Command
Types
Confirmed, with query.
Example: CALC:LIM:UPP -10, 0, 0, -10
Define the following upper and (default) lower limit line segments:
CALC:LIM:DISP ON
Show the limit line segments in the active diagram.
CALCulate<Chn>:LIMit:UPPer:FEED
Generates an upper limit line using the stimulus values of a data or memory trace and specified offset
values.
<Chn>
Channel number used to identify the active trace. This trace provides the