3.3.2 Home Screen
The home screen is composed of seven parts: readings (1), error/status line (2), instrument activity
line (3), selection buttons (4), time/date (5), concentration units (6) and USB status (7).
Figure 29 – Home Screen
Readings (1)
Displays the concentration being measured in real-time. The display can be configured to show just
the instantaneous data or the instantaneous and average data (refer to Section 3.4.8 Home Screen).
Error/Status Line (2)
The error/status line provides users with information on any problems the instrument may have. It
displays the highest priority error or status condition contained in the Status Menu (refer to
Section 3.4.4).
Instrument Activity (3)
This line shows what function the instrument is currently performing. Generally, it will show three
groups of actions: Warm-up, Measurement or Calibration.
Selection Buttons (4)
These buttons are used on the home screen to enter one of two menus. The Quick Menu (refer to
Section 3.4.1) contains all information and features necessary for scheduled maintenance. The Main
Menu (refer to Section 3.4.2) contains all information and fields available to users and is generally only
used during initial set-up and diagnostics.
Time and Date (5)
The time and date are displayed in between the menu buttons at the bottom of the screen.
Concentration Units (6)
The instrument units are displayed in the bottom right corner of the display.
USB Detection (7)
A USB symbol will be displayed in the bottom right corner when the USB memory stick is plugged (the
USB socket is behind the front panel). If the USB symbol is not displayed means the USB memory stick
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