Tektronix 2465B - Q Appendix C; Power up Tests; Kernel Test; Confidence Tests

Appendix C
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'D 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 A/B 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 YY
where XX is a two-digit test number and YY is a failure code. Table C-1 shows the
function affected by detected failures.
2465B/2455B/2445B Operators
C-1