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M400E Ozone Analyzer Operator’s Manual Basic Operation of the M400E Analyzer
6. BASIC OPERATION OF THE M400E ANALYZER
6.1. OVERVIEW OF OPERATING MODES
The M400E analyzer software has a variety of operating modes. Most commonly, the analyzer will be operating
in SAMPLE mode. In this mode, a continuous read-out of the O
3
concentrations is displayed on the front panel
and is available to be output as analog signals from the analyzer’s rear panel terminals. The SAMPLE mode
also allows:
TEST functions and WARNING messages to be examined.
Manual calibration operations to be initiated
The second most important operating mode is SETUP mode. This mode is used for configuring the various sub
systems of the analyzer such as for the iDAS system, the reporting ranges, or the serial (RS-232/RS-
485/Ethernet) communication channels. The SET UP mode is also used for performing various diagnostic tests
during troubleshooting.
Mode Field
SAMPLE RANGE=500.0 PPB O3= XXXX
<TST TST> CAL SETUP
Figure 6-1: Location of Mode field on M400E Analyzer Display
The mode field of the front panel display indicates to the user which operating mode the unit is currently running.
Besides SAMPLE and SETUP, other modes the analyzer can be operated in are:
Table 6-1: Analyzer Operating Modes
MODE EXPLANATION
SAMPLE
Sampling normally, flashing text indicates adaptive filter is on.
SAMPLE A
1
Indicates that unit is in SAMPLE mode while AUTOCAL feature is active (IZS Only).
M-P CAL
This is the basic calibration mode of the instrument and is activated by pressing the CAL key.
SETUP [X.X]
SETUP mode is being used to configure the analyzer. The gas measurement will continue during
this process. The revision of the M400E firmware being run will appear after the word “SETUP”
ZERO CAL [type] Unit is performing ZERO calibration procedure
LO CAL A [type] Unit is performing LOW SPAN (midpoint) cal check procedure
SPAN CAL [type] Unit is performing SPAN calibration procedure
DIAG Mode
One of the analyzer’s diagnostic modes is active (Section 6.13).
[type:]
A
1
: Initiated automatically by the AUTOCAL feature (IZS Only).
M: initiated manually by the user.
R: initiated remotely through the COM ports or digital control inputs.
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