envea STACK 710, User Manual

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4 Getting Started STACK 710
28
(PC-000878-MA Issue 7, December 2021)
ENVEA UK Ltd
4.2 Function Keys
The following function keys are located on the touch panel below the LCD display
on the side of the STACK 710 Transceiver:
Exit- Return to the previous menu level or cancel data entry.
Up- Change menu item or increase data value.
Down- Change menu item or decrease data value.
Enter- Select menu item or save the data entry.
1. Displayed Value
When the LCD display shows only the instrument reading, pressing the or
arrows will change the value displayed. If the units are %, the value is Opacity.
If the units are mg/m , the value is Dust Density. If no units are shown, the
value is Optical density.
2. Menu Selection
When the LCD display shows only the instrument reading, press or to go
to the menu. Use the and arrows to select the required menu item and
press
To cancel a menu selection, press
3. Data Entry
To change a data value, use the arrow to increase the value and the arrow
to decrease it.
When the value is correct, press to store it permanently.
To abandon the change and revert to the previous value, press .
The STACK 710 provides an accelerator facility for entering large numbers.
To increase the value, hold down the arrow. Initially, the least significant digit
is highlighted white on black. The highlighted digit is incremented, completing the
decade in which it starts plus one more cycle through the values from 1 to 9 and
0. The highlight then moves to the next higher digit leaving the previous digit at
0. Releasing the key allows a short pause for further changes to the value with
single presses of the and arrows. If the keys are released for about 2
seconds, the highlight progresses down the digits, pausing for about 2 seconds
on each one to allow further adjustment. When the highlight leaves the lowest
digit, the value is validated and may be automatically adjusted to bring it within
permissible limits. The value can be stored by pressing when the highlight is
on the last digit and the symbol is present. Pressing
leaves the original
value unchanged. It is not possible to store a value that is out of limits.
Decreasing the value using the arrow works in a similar manner.