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Model 400E Ozone Analyzer
Instruction Manual
6.7. Diagnostic Mode (DIAG)
A series of diagnostic and configuration tools is grouped together under the menu
heading DIAG located under the SETUP Menu, in the MORE (see APPENDIX B)
subsection. These tools can be used in a variety of troubleshooting and diagnostic
procedures.
The various operating modes available under the DIAG menu is:
Display
Mode
DIAG I/O
DIAG AOUT
DIAG AIO
DIAGO3GEN
DIAG DARK
DIAG FCAL
DIAG TCHN
P/N 04316 Rev: B
Table 6-10: Diagnostic Mode (DIAG) Functions
SIGNAL I/O: Allows observation of all digital and analog signals
present in the instrument. Allows certain digital signals to be
toggled between ON and OFF states.
ANALOG I/O: The analyzer is performing an Analog output Step
Test. This calibrates the Analog output channels.
ANALOG I/O CONFIGURATION: Analog I/O parameters are
available for viewing and configuration.
O3 GEN CALIBRATION: The analyzer is calibrating the O
Generator of the IZS Option.
DARK CALIBRATION: The analyzer is performing a Dark
Calibration procedure. This procedure measures and stores the
inherent DC offset of the Photometer circuitry.
FLOW CALIBRATION: The analyzer is performing a calibration
of the Gas Pressure/Flow Sensors.
TEST CHAN OUTPUT: Used to configure the A4 Analog Output
channel.
Meaning
Operating Instructions
Manual
Section
6.7.1
6.7.2
6.7.3
6.7.4
3
6.7.5
6.7.6
6.5.7
93
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