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Operation
The item that is between arrows on the screen is the item that is
currently selectable by choosing ENTER (turn-and-release toward
ENTER with the ESCAPE/ENTER control).
In these instructions, to ENTER means to turn-and-release toward
ENTER, and To ESCAPE means to turn-and-release towards ESCAPE.
To scroll UP (or scroll DOWN) means to turn-and-release toward UP
(or DOWN) as many times as necessary to reach the required menu
item.
4.2.1 Mode/Function Selection
When the analyzer is first powered up, and has completed its
initialization and self diagnostics, ESCAPE toggles the instrument
between the ANALYZE screen (Analysis Mode) and the MAIN MENU
screen (Setup Mode). The ANALYZE screen is the only screen of the
Analysis Mode.
The MAIN MENU screen is the top level in a series of screens used
in the Setup Mode to configure the analyzer for the specific application.
The DOWN/UP commands scroll through the options displayed on the
VFD screen. The selectable option appears between arrows. When you
reach the desired option by scrolling, ENTER the selection as described
below.
ESCAPE takes you back up the hierarchy of screens until you reach
the MAIN MENU again. ESCAPING any further just toggles between
the MAIN MENU and the ANALYZE screen.
4.2.1.1 A
NALYSIS
This is the normal operating mode. The analyzer monitors the
oxygen content of the sample, displays the percent of oxygen, and warns
of any alarm conditions. Either control switches you to Setup Mode
Setup Mode switches back to Analyze Mode if no controls are used for
more than five seconds.
4.2.1.2 S
M
ETUP
The MAIN MENU consists of 12 functions you can use to
customize and check the operation of the analyzer. Figure 4-1 shows the
functions available with the 3020T. They are listed here with brief
descriptions:
Teledyne Analytical Instruments
M
ODE
ODE
Model 3020T
.
34
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