Tma 2940 Test Functions; The Tma Confidence Test - TA Instruments TMA 2940 Operator's Manual

Maintenance and Diagnostics
TMA 2940
Test Functions
The TMA
Confidence Test
6–12
The TMA 2940 has three levels of test and
diagnostic functions:
• The confidence test that is run every time
the instrument is started.
• Cycling test functions that continuously test
specific.
• A manufacturing verifier test mode that
coordinates and logs the results of a
sequence of confidence test and drift runs.
These test functions are always present in the
instrument. They are designed to aid manufac-
turing and service in checking and repairing the
instrument.
The TMA runs a confidence test every time it is
started or reset. The confidence test checks most
of the computer and interface components in the
system. Each of the tests that make up the
confidence test provides status and error infor-
mation on the instrument display.
When the confidence test is running, a two-digit
hexadecimal test number is shown on the lower
right of the instrument display (see Figure 6.2).
The number changes each time a new test is
started. Most of the tests are performed very
quickly, so their test numbers may not be
apparent.
TA I TMA 2940
NSTRUMENTS