1: General Description
5
Figure 1.4 Keypad
1.4.2 Keypad
The instrument is configured and controlled via a 16-key tactile membrane keypad, as shown in Figure 1.4.
ON/OFF Key
The
ON/OFF
key is shown on the top left of the keypad. When turned
ON
an initialization screen is displayed on
the LCD showing the instrument’s serial number and software revision. Once this appears, the instrument can be
started by pressing the
ENTER
key once – the initialization screen is then replaced by a
MAIN MENU
which
provides access to the remaining functions.
Menus and the menu selection keys
The PUB menus are arranged hierarchally with the
MAIN MENU
being at the top level. Menu navigation is
achieved by three keys on the right hand side of the keypad which are used to scroll
UP
and
DOWN
a menu list and
SELECT
a menu item. When scrolling through a menu, an arrow-shaped cursor moves up and down the left hand
side of the screen to indicate the active menu choice which can then be selected by pressing the
ENTER
(
SELECT
) key.
Some menus have more options than can be shown on the screen at the same time, in which case the
‘overflowed’ choices can be brought into view by continuing to scroll
DOWN
beyond the bottom visible item. Menus
generally ‘loop around’ if you scroll beyond the first or last items.
If you select
Exit
on any menu it usually takes you back up one level in the menu hierarchy, but in some cases it
may go directly to the ‘Flow Reading’ screen.
Some screens require you to move the cursor left and right along the display as well as up and down. This is
achieved using keys 5 (scroll
LEFT
) and 6 (scroll
RIGHT
).
Dual function numerical keypad
The block of keys shown in the center of the keypad in Figure 1.4 are dual function keys. They can be used to
enter straight-forward numerical data, select the displayed flow units, or provide quick access to frequently
required control menus.
Note: Some of the features accessed by these keys are restricted in the PUB model range. An “Option not
available” message is displayed if you select a restricted function.
ON/OFF
Scroll UP
ENTER
Scroll DOWN
Numerical keypad
Scroll LEFT
Scroll RIGHT
with dual function keys
(SELECT)
Summary of Contents for PUB Series
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