Vaisala DMT340 - Manual (Page 77)

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 75
Display Contrast Setting
Display contrast is automatically adjusted based on the ambient
temperature. However, depending on the installation location and
viewing direction, it may be necessary to fine-tune the contrast manually.
Using Display/Keypad
1. Open the Main Menu
by pressing any of the ▲▼◄► arrow
buttons.
2.
Select ►Display, press the ►arrow button.
3. Select Contrast, press the ADJUST button.
4. Adjust the
contrast by pressing the ◄► arrow buttons.
5. Press OK and EXIT to return to the basic display.
Using Serial Line
Use the serial line command CON to view or set the display contrast.
CON [xxx]
where
xxx
= Contrast value for display. Recommended range -9 ... 9,
default 0. Negative values make screen lighter, positive
values make it darker.
Example (view current contrast setting):
>con
Contrast : 0
>
Example (set contrast to 5):
>con 5
Contrast : 5
>
Keypad Lock (Keyguard)
This function locks the keypad and prevents unintentional key presses.
1. Keep pressing the left-hand function button for 4 seconds to lock
the keypad (at any display).
2. To unlock the keypad, press the OPEN button for 4 seconds.