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Teledyne Analytical Instruments 

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  MORE  DIAG: Using the Diagnostics 

A series of diagnostic tools is grouped together under the SETUPMOREDIAG menu.  As these 
parameters are dependent on firmware revision (see Menu Tree A-6 in Appendix A).  The individual 
parameters, however, are explained in more detail in the indicated in 6-15.  These tools can be used in a 
variety of troubleshooting and diagnostic procedures and are referred to in many places of the 
maintenance and trouble-shooting s. 

: Allows observation of all digital and analog signals in 

the instrument.  Allows certain digital signals such as valves and 
heaters to be toggled ON and OFF. 

6.13.2 

: When entered, the analyzer performs an analog 

output step test.  This can be used to calibrate a chart recorder or 
to test the analog output accuracy. 

6.13.3 

: the signal levels of the instruments 

analog outputs may be calibrated (either individually or as a 
group).  Various electronic parameters such as signal span, and 
offset are available for viewing and configuration. 

6.13.4  

T: The analyzer is performing an electric test.  This 

test simulates IR detector signal in a known manner so that the 
proper functioning of the sync/demod board can be verified. 

6.13.5 

:  The analyzer is performing a dark 

calibration procedure.  This procedure measures and stores the 
inherent dc offset of the sync/demod board electronics. 

6.13.6 

: The analyzer records the current 

output of the sample gas pressure sensor.  This value is used by 
the CPU to compensate the CO

2

 concentration. 

6.13.7 

: This function is used to calibrate the gas flow 

output signal.  This setting is retained when exiting DIAG. 

6.13.8 

: Configures the A4 analog output channel. 

6.13.9