R&S ZNL, Руководство пользователя

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VNA GUI reference
R&S
®
ZNL/ZNLE
435 User Manual 1178.5966.02 ─ 19
Application: Graduated quality check
The two pass/fail signals can be used to distinguish three quality levels of a DUT. The
test is performed on two identical traces Trc1 and Trc2 within the same channel. Trc1
is configured with a tighter, Trc2 with a looser set of limit lines. For Trc1 "TTL1 Pass" is
enabled, for Trc2 "TTL2 Pass".
●
TTL1: signal
If Trc1 passes (and so does Trc2), the quality of the DUT is good.
●
TTL1: no signal, TTL2: signal
If Trc1 fails but Trc2 passes, the quality of the DUT is still sufficient.
●
TTL1: no signal, TTL2: no signal
If both Trc1 and Trc2 fail, the quality is poor.
Instead of using two traces, it is possible to consider two groups of traces that are
assigned to "TTL1 Pass" and "TTL2 Pass", respectively.
Remote command:
CALCulate<Chn>:LIMit:TTLout<Pt>[:STATe]
Shift Lines
By setting the "Stimulus" and "Response" values it is possible to shift a previously
defined limit line in x and y direction, respectively, without having to redefine the con-
stituent line segments.
Remote command:
CALCulate<Chn>:LIMit:CONTrol:SHIFt
CALCulate<Chn>:LIMit:UPPer:SHIFt
CALCulate<Chn>:LIMit:LOWer:SHIFt
10.9.4.2 Define Limit Lines dialog
The "Define Limit Lines" dialog defines the limit lines for the active trace on a segment-
by-segment basis. For each segment, the limit is defined as a line connecting two
points (with linear or logarithmic "Interpolation"), or as a user-defined formula.
Access: [Display Lines] > "Limit Test" > "Define Limit Line..."
Background information
Refer to Chapter 9.4.1, "Limit check" , on page 230.
When you switch to a different sweep type , existing limit lines are preserved. With a
different sweep variable, however, the limit lines cannot be displayed and the corre-
sponding limit check cannot be executed.
If you want to define limit lines for the new sweep variable, you first have to delete all
existing limit lines for the old sweep variable.
Controls on the Define Limit Lines dialog
The "Define Limit Lines" dialog contains a table to edit the individual segments of the
limit lines. The buttons below the table extend or shorten the segment list.
Display Lines softtool