LCD/Select Button Usage
7-3
The Mk7 LCD is very similar to the Mk10, but has fewer features and is physically
smaller (Figure 7-5). There are 4 label digits, and 5 enunciators.
•
Figure 7-5 Mk7 LCD with all segments turned on
LCD/Select Button Usage
The data is displayed on the LCD as a series of pages, up to a maximum of 90. The
number of maximum pages depends on the number of Specials and Annuals days
specified in the calendar in the Tariff Setup, daylight saving entries, miscellaneous
strings and other data in this space. Each page displays a single quantity from the meter.
The left seven-segment characters show the description and the right seven-segment
characters show the value, with an optional unit showing above the value.
If the display is too long to fit into the 8 characters of seven-segment, the display will
scroll a character every second to show the entire line. An underscore “_” shows the
start of the line. The 7 characters of the seven-segment display on the left will not scroll.
Thus a description will have to be abbreviated to a maximum of 7 characters.
To progress to the next page, press the
Select
button. Each time the button is pressed the
display moves to the next page. The display may also be setup to automatically cycle
the display through the pages, pausing if the
Select
button is pressed.
The LCD can come with or without a backlight. The backlight may be set to only
activate while the LCD is in use, which is recommended to reduce power consumption.
The turn on time of the backlight can be configured using EziView. The backlight does
not operate when running on the UPS battery.
If the meter is off (no voltage applied), pressing and holding the
Select
button will wake
up the meter using its internal battery (it may take up to a second for the meter to wake
up). All LCD screens may be viewed in this mode, including alternate display sets.
This allows a manual meter reading even if power is lost. The display will
automatically turn itself off after the
No Power Timeout
(configured in EziView, see the
LCD chapter in the Atlas Software Reference Manual).
Note that the meter does not measure in the wakeup state, and the communication ports
do not operate. The time the meter is woken up is still counted as off time in the emter
runtime counters.
LCD Display 7-3
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