Dhh805-A Display Overview; Symbols; Keypad Overview - ABB DHH805-A Operating Instruction

3.2 DHH805-A display overview

The display of DHH805-A is a 128 x 64 pixel graphic display
with backlight. Viewable area is 5,6 cm x 2,8 cm (2.2 in. x 1.1
in.) for 4 viewable message lines. The display provides three
types of information:
— Header information including: menu or submenus titles,
alpha or numeric entry mode indicator and battery level
— Main data display shows operating menus and
submenus (editable parameters and device information
included)
— Footer information defining: display navigation keys
functionality (defined hereafter) as well as some defined
operation icons (i.e.: information frames or uppercase lock).

3.2.1 Symbols

Battery symbol indicates DHH805-A remaining
portion of battery.
Electrical plug symbol indicates the AC adapter is
connected and batteries are recharging.
This symbol indicates that the selected parameter
can be edited with alphabetic characters
This symbol indicates that the selected parameter
can be edited with numeric characters
The symbol here on the left indicates that the
chosen submenus contain a list of selectable
options.
This symbol appears on the bottom of the display
and indicates that the device is performing HART
commands and/or is communicating with a live
connected HART instrument.

3.3 Keypad Overview

DHH805-A keypad has three basic key types: single function
keys, dual-function keys, and soft keys with changing
definitions. The following table shows keys and their relevant
meanings:
ON. In order to power the HHT on, user has to keep
this key pressed for five (5) seconds (until the
backlight is on). The unit will display the ABB logo,
the software revision number and ABB website
address. The message "Polling..." will be briefly
displayed: in this phase, the HHT scans the network
according to its customized configuration (address
0 or polling mode) and then it provides the list of all
the connected devices, if any. If at least one device
with is found, the HHT immediately goes into online
status and displays information about the device. If
no device is found, the HHT Main navigation screen
is shown.
OFF. To turn DHH805 off, press and hold the OFF
key for approximately five (5) seconds. The unit will
display the message "Shutting down...".
8 OI/DHH805-EN Rev. D | Handheld communicator Model DHH805-A
3 DHH805-A overview
DISPLAY CONTRAST. This key allows the user to
adjust the contrast of the LCD display for ambient
lighting and user preferences at any time and in any
operating mode. Pressing and holding this key
cycles through all available contrast settings. After
adjusting Display Contrast, wait at least five (5)
seconds before turning unit off to insure storage of
new contrast setting.
BACKLIGHT. This key toggles the backlight feature
between Very low intensity / Low intensity / Mid
intensity / High intensity to illuminate the display in
poor ambient light conditions. Battery life is affected
by use of the backlight feature; High intensity is the
most aggressive. To disable backlight function
access the dedicated menu entry under "Settings"
LEFT / RIGHT ARROW KEYS. These keys support
cursor movement forward and backward for text /
numeric editing needs on customizable parameters.
The default edit mode is "overwrite."
DELETE / HELP. This editing key will delete the
character located on the left of the cursor in a text /
numeric string while editing customizable
parameters. The HELP function is performed during
the device navigation only on some specific items.
This function can be exploited only when a device is
connected to the HHT. When available, the
information icon will appear in the bottom center of
the display.
LEFT NAVIGATION KEY. This key has different
meanings according to the menu or submenu user
is navigating. It can mean:
— Back: go back to the previous menu /
submenu
— Cancel: exit without saving the selected
parameter value
— No: as answer within some specific question
frames
RIGHT NAVIGATION KEY. This key has different
meanings according to the menu or submenu user
is navigating. It can mean:
— Edit: edit customizable parameters
— Select: enter a submenu or select a
parameter value in a list (enumeration)
— Apply: apply the new entered value
— Ok: save selected parameter and display
stored parameter value
— Yes: as answer within some specific question
frames
— On: for powering on the device for the first
time before activation.
UP NAVIGATION KEY. The up navigation key is
useful when scrolling up/down a list (menu and
submenus with their relevant entries). This key
enables the writing in uppercase during the editing
of customizable parameters (i.e.: change password).
This key can also be used for scrolling up a long
help message.
DOWN NAVIGATION KEY. The down navigation
key is useful when scrolling up/down a list (menu
and submenus with their relevant entries). This key
disables the writing in uppercase (if selected) during
the editing of a customizable parameters (lowercase
as default). This key can also be used for scrolling
down a long help message.
ALPHA-NUMERIC KEYPAD. All the keys are
essential to insert alphabetic or numeric strings in all
editable fields. Numbers (with the decimal point and
the minus sign) are the only characters that can be
written when editing numerical fields whereas within
alphanumerical strings they always follow all the
letters enabled for the pressed key.