Tektronix TDS6404, Service Manual

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Performance Tests
4- 84
TDS6000 Series Service Manual
m. Verify that the instrument triggers one Unit Interval (UI) after the 1 in
the input signal (see Figure 4--36). Enter pass or fail in the test record.
4.
Verify that the pattern matching circuits can do isolated 0:
a. Adjust the trigger LEVEL to trigger at 75% (+1 division) on the sine
wave.
b. Set the Format to Binary and then touch the Clear button.
c. Set the Serial Pattern Data pattern bits to XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXX1
2
.
d. Touch Apply .
e. Verify that the instrument triggers on a 1 (see Figure 4--37). Enter pass or
fail in the test record.
f. Touch the Clear button.
g. Set all Serial Pattern Data bits to X except for the nth bit, where n is the
step number.
h. Touch Apply .
i. Verify that the trigger occurs (n modulo 3) clock cycles after the 1 (see
Figure 4--37). Enter pass or fail in the test record.
j.
Repeat steps g through i until all 32 bits of the Serial Pattern Data have
contained a 1.
5.
Disconnect the hookup:
Disconnect the cables and adapters from the inputs
and outputs.