Using The Diagnostic Signal I/O Function - Teledyne T101 Operation Manual

Teledyne ML - T101 Operation Manual

9.1.3. USING THE DIAGNOSTIC SIGNAL I/O FUNCTION

The signal I/O parameters found under the diagnostics (DIAG) menu combined with a
thorough understanding of the instrument's theory of operation (Section 10) are useful
for troubleshooting in three ways:
The technician can view the raw, unprocessed signal level of the
•
analyzer's critical inputs and outputs.
All of the components and functions that are normally under instrument
•
control can be manually changed.
• Analog and digital output signals can be manually controlled.
This allows the user to systematically observe the effect of these functions on the
operation of the analyzer.
Figure 9-2 shows an example of how to use the signal I/O menu to view the raw voltage
of an input signal or to control the state of an output voltage or control signal. The
specific parameter will vary depending on the situation. Please note that the analyzer
will freeze its concentration output while in the diagnostic signal I/O menu. This is
because manually changing I/O outputs can invalidate the instrument reading.
Troubleshooting & Service
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