Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 76)

<9 DATA FILES AND FORMAT> 9-4
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
system .bak
System History Back-Up
A back-up of historical log of
configuration changes
System Configuration History - When the system.his file exceeds
100KB size the contents is saved to this .bak file and the .his file
is emptied. This .bak file is in the form of ASCII data files that can
be opened with Microsoft “Notepad” as simple .txt file formats.
The content can then be copied and pasted into Microsoft Excel
spread. Each configuration change is logged with the date (MM-
DD-YYYY) and time that it occurred, the parameter (e.g. opl) and
the new value. Also, whenever the analyzer is started-up or shut-
down the ‘TruePeak Open/Close” parameter will be logged.
Example:
11-20-2006 08:13:10 opl(inch) 39.96 43.31
11-20-2006 08:13:26 temperature(F) 509.0 86.0
11-20-2006 08:13:40 pressure(psi) 14.50 14.50
system .usr
System User
System configuration as shipped from
the factory
This contains all ‘Factory’ configuration settings as the analyzer
was shipped. This is used for reference purposes only.
valspe .his
Validation Spectra
All spectra captured during On-Line and
Off-Line Validations
Spectra captured for historical Validations (On-Line and Off-Line)
are stored in this file.
valspe .bak Validation Spectra Back-Up
Backed-up spectra captured during On-
Line and Off-Line Validations
When the valspe.his file exceeds 1MB size the contents is
saved to this .bak file and the .his file is emptied. This .bak file is
Spectra captured for historical Validations (On-Line and Off-Line)
are stored in this file.
zero00 .spe Zero Calibration Spectra
Absorption Spectrum and coefficients at
time of calibration
This file is essential to the analyzer calibration - if this file does
not exist or is corrupted, modified or otherwise tampered with
then the analyzer calibration is invalid. It contains essential
information relating to the Zero Calibration of the analyzer.
zero01
to
zero10
..spe
Historical Zero Calibration
Spectra
Previous Absorption Spectrum
and coefficients at time of previous
calibrations
zero01 through zero09 are previous files with zero01 being the
most recent. The most recent previous zero01 can be restored
in the analyzer as 'Previous Calibration'. The factory calibration
which can also be restored in the analyzer is named zero10.
zeroref .cfg
System Configuration
At the time of current Zero Calibration
System Configuration at the time of current Zero Calibration
(zero00.spe)
memory .res File Size Management for Results FACTORY PERSONNEL ONLY - used by TruePeak software to
manage the .res files
memory .spe File Size Management
for Spectra FACTORY PERSONNEL ONLY - used by TruePeak software to
manage the .spe files