R&S ESU Series Operating Manual page 274

R&S ESU
SELECT LIMIT The SELECT LIMIT LINE softkey activates the LIMIT LINES table and the selection
LINE bar jumps to the uppermost name in the table.
The following information is offered in the columns of the table:
Name
Compatible
Limit Check Activate automatic violation check for upper/lower limits.
Trace
Margin
Name and Compatible - Enabling limit lines
A maximum of 8 limit lines can be enabled at any one time. In split screen mode,
they may be assigned to screen A, screen B or to both screens. A check mark at the
left edge of a cell indicates that this limit line is enabled.
A limit line can only be enabled when it has a check mark in the Compatible column,
i.e. only when the horizontal display (time or frequency) and vertical scales are iden-
tical to those of the display in the measurement window.
Lines with the unit dB are compatible to all dB(..) settings of the y-axis.
If the scale of the y-axis or the domain (frequency or time axis) are changed, all non-
compatible limit lines are automatically switched off in order to avoid misinterpreta-
tion. The limit lines must be enabled anew when the original display is re-displayed.
Remote command:
Limit Check - Activate automatic limit violation check (analyzer mode only)
When LIMIT CHECK ON is activated, a GO/NOGO test is performed in the active
screen. In the center of the diagram, a display window appears which indicates the
results of the limit check test:
LIMIT CHECK: PASSED
LIMIT CHECK: FAILED
LIMIT CHECK: MARGIN
The following example shows two active limit lines:
LIMIT CHECK: FAILED
LINE VHF_MASK: Failed
LINE UHF2MASK: Margin
A check for violations of limit lines takes place only if the limit line of the assigned
measurement curve (trace) is enabled.
Operating Manual 1302.6163.12 - 03
Enable the limit line.
Indicates if the limit line is compatible with the measurement
window of the given trace.
Select the measurement curve to which the limit is assigned.
Define margin.
CALC:LIM3:NAME "GSM1"
CALC:LIM3:UPP:STAT ON
CALC:LIM4:LOW:STAT ON
No violations of active limits.
One or more active limit lines were violated. The
message contains the names of the limit lines
which were violated or whose margins were not
complied with.
The margin of at least one active limit lines was
not complied with, however, no limit line was vio-
lated. The message contains the names of the
limit lines whose margins were not complied with.
Instrument Functions
Basic Settings
4.243