Tektronix TLS 216 User Manual page 230

Triggering on a Sequence
3–148
Table 3–9: Logic Functions
Logic Boolean Requirement for a TRUE Input Pattern (Start or End)
AND All the inputs must match their logic level as they appear in the pattern
definition: HIGH (H), LOW (L), or Don't Care (X).
NAND At least one of the inputs must cease to match its logic level as it appears in
the pattern definition.
OR At least one of the inputs must match its logic levels as it appears in the
pattern definition.
NOR All the inputs must cease to match their logic levels as they appear in the
pattern definition.
Table 3–10: Time Qualifiers
Trig When Time Qualifiers versus Trigger Event
< Time The inputs must first compare TRUE
must then compare TRUE with the end pattern before a user-specified time
expires.
The logic scope triggers at the point the end pattern becomes TRUE.
> Time The inputs must first compare TRUE
must then compare TRUE with the end pattern after a user-specified time
expires.
The logic scope triggers at the point the end pattern becomes TRUE.
Time Out The inputs must first compare TRUE
must then not compare TRUE with the end pattern before a user-specified
time expires.
The logic scope triggers at the point that time expires.
In Range The inputs must first compare TRUE
must then compare TRUE with the end pattern after a user-specified
minimum time expires but before a user-specified maximum time expires.
The logic scope triggers at the point that the end pattern becomes TRUE.
Out of Range The inputs must first compare TRUE
must then compare TRUE with the end pattern before a user-specified
minimum time expires or after a user-specified maximum time expires.
The logic scope triggers at the point that the end pattern becomes TRUE.
1
Inputs are TRUE when they meet the Boolean requirement for the logic function selected;
otherwise they are FALSE. See Table 3–9.
2
The logic scope starts timing the period at the point when the inputs become TRUE (see
footnote 1).
1,2
with the start pattern. The inputs
1,2
with the start pattern. The inputs
1,2
with the start pattern. The inputs
1,2
with the start pattern. The inputs
1,2
with the start pattern. The inputs
TLS 216 User Manual