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4 Operation
The item that is between arrows on the screen is the item that is cur-
rently 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 initializa-
tion 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 Analysis Mode
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
switches back to Analyze Mode if no controls are used for more than
five seconds.
4.2.1.2 Setup Mode
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 3020M. They are listed here with brief descriptions:
1 AUTO-CAL: Used to define and/or start an automatic calibration
sequence.
2 PWD: Used to establish password protection or change the
existing password.
3 LOGOUT: Logging out prevents unauthorized tampering with
the analyzer settings.
4-2
Teledyne Analytical Instruments
Model 3020M
.
Setup Mode
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