Delta OHM HD2817T Series, Manual

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5. Keyboard description
The HD2817T... models are fitted with an LCD display and an eight-key keyboard.
Vertical ZOOM key
In graphic mode, it enlarges or reduces the graph’s vertical scale.
Horizontal ZOOM key
In graphic mode, it enlarges or reduces the graph’s horizontal scale.
Up arrow
When used in the menu, it selects an item from a list or increases the selected parameter
value.
Down arrow
When used in the menu, it selects an item from a list or decreases the selected parameter
value.
UNIT key
It changes the temperature unit of measurement between Centigrade or Fahrenheit. By
repeatedly pressing the UNIT key, the desired unit of measurement can be displayed.
In graphic mode, it allows selection of a new physical quantity.
ESC key
When used in the menu, it goes up one level in the menu hierarchy from a sub-level to an
upper level. To go directly from any level to measurement mode, press MENU.
ENTER/FUNC key
This key has a double function:
As ENTER key, in the menu, it confirms the selected item.
As FUNC key, in standard view, it enables the MAX (maximum), MIN (minimum), AVG
(average) sequence for the displayed measurement.
To reset the previous measurements and restart with a new calculation, press ENTER/FUNC
until the message “
CLR Func? ” appears, then use the arrows to select YES and confirm
using ENTER.
MENU key
It allows to access the instrument menu main screen. In the menu, it returns to normal
measurement.