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Noise
Noise spikes that may occur in low ppmv applications can be eliminated using the Infinite Impulse Response
Filter formula. The values entered for Freq_Noise, Press_Noise, Temp_Noise, and Flow_Noise represent
the multiplicative noise smoothing factors (between 0.1 and 1.0) for these parameters. The noise smoothing
values are factory set to 1.0 which essentially disables noise smoothing. Highlight the variable to be altered;
press
to select. Enter new noise smoothing coefficient when the "New Value?" prompt is displayed.
enter
Press
to save change and return to the Noise Menu; press
enter
Note that infinite impulse noise filtering is disabled when enhanced noise smoothing (boxcar averaging) is
enabled. Refer to (Chapter 5): Flags2 for more information on enabling enhanced noise smoothing.
Level 3 Configure Menu
Figure 10 shows the sub-menus of the Configure Menu when the Level 3 access code has been entered. Scroll
up, down, left, and right until desired menu item is highlighted; press
!
CAUTION
PolyCoef (Polynomial Coefficients)
PolyCoeff_0
PolyCoeff_1
PolyCoeff_2
PolyCoeff_3
PolyCoeff_D
PolyCoeff_E
Temp_Set_Pt
Propor_Band
Temp_Reset
Convr_Factor
Moist_Span
Switch to Level 2
Configure Menu
The constants and variables which may be altered in the Level 3 Configure
Menu greatly affect analyzer function and signal processing. The default
values for many of these variables are determined during factory calibra-
tion of the instrument. DO NOT change the values of system constants and
variables without full understanding of their effects on analyzer function and
output data.
Õ
Level 2
Configure Menu
PolyCoef
Constants
LVL2 Conf
Default Memory
ENTER = ERASE Memory
CANCEL = Do Not Erase
Figure 10: Level 3 Configure Menu
to quit.
cancel
to continue.
enter
To Access:
Press
/
button
test
config
Enter Level 2 Access Code
Highlight Configure Menu
Press
enter
Labels
Flags2
Timers
Alter Moist Label
Alter Press Label
Alter Temp Label
Alter Flow Label
Alter Current Label
Alter Moist Gen Lbl
Enter New Value
Prg_Ref_Tmr
Prg_Meas_Tmr
Prg_Flow_Tmr
Software Configuration 5-7
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