GUI Reference
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User Manual 1173.9557.02 ─ 13
If the active trace exceeds the limits, then no TTL signal is generated. It is possible to
activate both pass/fail signals for the same trace or assign several traces to a signal.
Monitoring several traces
If a channel contains several traces, is possible to assign them one after another to each
pass/fail signal. The procedure divides the traces of the channel into four groups that are
either assigned to signal 1, to signal 2, to both signals, or to none of them.
If several traces with independent limit check are assigned to a pass/fail signal, then the
TTL signal is generated only if all traces are within limits. It is switched off as soon as one
trace exceeds the limits.
Application: Graduated limit check
The two pass/fail signals can be used to distinguish three quality levels of a DUT. The
test is performed with a looser and a tighter set of limit lines that are assigned to two
traces with identical channel and trace settings. The limit check for the two traces is
monitored by means of the signals "TTL Out Pass 1 /TTL Out Pass 2", respectively.
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If the DUT is passed in both limit checks, the quality is good.
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If the DUT is failed in the limit check with tighter limits, the quality is still sufficient.
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If the DUT is failed in both limit checks, the quality is poor.
Instead of using two traces, it is possible to consider two groups of traces that are
assigned to "TTL 1 Pass" and "TTL 2 Pass".
Remote command:
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 constituent line
segments.
Remote command:
4.2.5.2
Define Limit Lines (Dialog)
The "Define Limit Lines" dialog defines the limit lines for the active trace on a segment-
by-segment basis. In each segment the limit line is defined as a straight line connecting
two points.
Trace Settings
