Tektronix LTA7P Series, Service Manual

Page: 73 / 172

Performance Verification: Ajustment/Verification Fixture
TLA7Nx, TLA7Px, & TLA7Qx Logic Analyzer Module Service Manual
4- 25
Certification
The internal system clock and clock output timing are checked for accuracy. The
adjustment/verification fixture accuracy is certifiable if these parameters meet
specifications.
The procedure is described in the performance verification section, beginning on
page 4--25. Make a copy of the Calibration Data Report at the end of this chapter
and then record the results on the copy.
Performance Verification
This section contains procedures to verify the accuracy of the adjustment/verifi-
cation fixture.
The tests in this section provide a valid confirmation of performance and
functionality when the following requirements are met:
H
The adjustment/verification fixture must have been operating for a warm-up
period of at least 30 minutes, and must be operating at an ambient tempera-
ture b20
_
C and +30
_
C.
H
The adjustment/verification fixture must have been last adjusted at an
ambient temperature b20
_
C and +30
_
C.
H
The adjustment/verification fixture must be in an environment within the
same limits as for the logic analyzer, described in the
Specifications section
of the
Tektronix Logic Analyzer Family User Manual
.
These tests should be performed once every two years.
Each test verifies one or more parameters.
Table 4- 5: Adjustment/verification fixture performance verification tests
Test name Specification tested
Power supply V
DD
Internal clock frequency
1
50.065 MHz
Data skew
1
Less than 50 ps between any 2 channels
Hold time
1
0.0 ns
Setup time
1
+3.0 ns
1
Certifiable parameter
Prerequisites
Tests Performed