Tektronix TLA7AA Series, Service Manual

Page: 54 / 116

TLA7AXX/TLA7NAX Logic Analyzer Module Service Manual
5- 1
Adjustment Procedures
This chapter contains procedures for self calibration. Adjustments must be
performed when performance verification tests have failed. Adjustments must
also be made following replacement of any circuit board in the logic analyzer
module. For TLA7Axx/TLA7NAx modules, adjustments must be performed by
a qualified Tektronix Service Center technician. See
Service Options
on page 7--3
for more information.
Self calibration is an internal routine that optimizes performance at the current
ambient temperature to maximize measurement accuracy. No external equipment
or user actions are needed to complete the procedure. The logic analyzer module
saves data generated by the self calibration in nonvolatile memory. Passing self
calibration provides a higher level of confidence of module functionality.
NOTE
. Performing the self calibration does not guarantee that all parameters
operate within limits. Operation within limits is achieved by performing the
adjustment procedures. Verification of operation within limits is accomplished by
performing the performance verification procedures.
You can run the self calibration at any time during normal operation. To maintain
measurement accuracy, perform the self calibration if the following conditions
occur:
H
After repair and replacement of any circuit board.
H
It has been a year since the last self calibration was run.
Self Calibration