ATI
Q45D Portable Dissolved Oxygen
Part 5
– Operation
4.6
Keys
All user configurationsoccur through the use of four membrane keys. These keys are used as
follows:
MENU/ESC
To scroll through the menu section headers or to escape from anywhere in
software. The escape sequence allows the user to back out of any changesin a
logical manner. Using the escape key aborts all changes to the current screen
and backs the user out one level in the software tree. The manual will refer to
this key as either MENU or ESC, depending upon its particular function. In the
battery-powered version of the Q45, this is also the ON button.
UP
(arrow)
To scroll through individual list or display items and to
change number values.
LEFT
(arrow)
To move the cursor from right to left during changes to a number value.
ENTER
To select a menu section or list item for change and to store any change.
4.7
Display
The large custom display provides clear information for general measurement use and user
configuration. There are three main areas of the display: the main parameter display, the
secondary message line, and the icon area.
Main Parameter
During normal operation, the main parameter display indicates the
present process input with sign and units. This main display may be
configured to display any of the main measurements that the system
provides. During configuration, this area displays other useful set-up
information to the user.
Lower Line
During normal operation, the lower line of the display indicates user-
selected secondary measurements that the system is making. This also
includes calibration data from the last calibration sequence and the
transmitter model number and software version. During configuration,
the lower line displays menu items and set-up prompts to the user.
Finally, the lower line will display error messages when necessary. For a
description of all display messages, refer to Section 9.31.
