Appendixc; Power Up Tests; Kernel Test; Confidence Tests - Tektronix 2465A Operator's Manual

AppendixC
Power Up Tests
Power-up tests are automatically performed each time the instrument is turned on.
These tests provide the user with the highest possible confidence that the instrument
is operational. They include a Kernel test and Confidence tests.
Kernel Test
A kernel test failure is considered "fatal" to the operation of the instrument. A
Kernel test failure causes the TRIG'O indicator to flash and displays a binary code
pattern on other front panel indicators. If a kernel test fails, the user can attempt to
operate the instrument normally by pressing the NB TRIG button. Operation is
unpredictable; it depends on the nature of the failure.
Confidence Tests
Confidence tests are performed after the processor kernel has been found
operational. These tests check a portion of the instrument for correct operation.
If a Confidence test fails, the readout will indicate the nature of the failure by a
coded message in this format:
TEST XX FAIL VV
where XX is a two-digit test number and VY is a failure code. Table C-1 shows the
function affected by detected failures.
2465A/2455A/2445A Operators
C-1