Teledyne 3020T - Manual (Page 38)

4 Operation Model 3020T
4-2 Teledyne Analytical Instruments
toward UP to move the VFD screen two selections upwards on the list of
options (menu).
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
. Setup Mode
switches back to Analyze Mode if no controls are used for more than 5 s.
4.2.1.2 Setup Mode
The MAIN MENU consists of 11 functions you can use to customize
the operations of the analyzer. Figure 4-1 shows the functions available with
the Model 3020T. They are listed here with brief descriptions:
1 AUTO-CAL: Used to define and/or start an automatic calibration
sequence.