Martel Electronics DMC1410 - Manual (Page 13)

The parameter selection menu is called up when [UPPER] or
[LOWER] is selected from the main menu. It contains the following
options: [SELECT], [NEXT], and [DONE]. When the display is
selected, a parameter will start to flash. Use the [SELECT] option to
change the parameter, and the [NEXT] option to switch to another
variable. [DONE] returns to the home menu and enables the
selected mode.
2.3 Cursor control / Setpoint control
The output value can be controlled by the four cursor control arrows
on the keypad. By pressing one of the arrows a cursor will be added
to the display under the last digit of the output value. The left and
right arrow keys are used to select which decade to be changed in
the output value. The up and down arrow keys are used to increase,
decrease, or ramp the output value.
The menu bar will change to the setpoint menu with the touch of any
one of the four arrow keys.
The three function keys are associated with 0, 25, and 100% values,
respectively. 0 and 100% values can be stored by entering a value
and then holding down the corresponding function key. The 25% key
will then automatically step through the 25% values.
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