Metrohm 746 VA Trace Analyzer - Manual (Page 90)

4.1 Preparations
746 VA Trace Analyzer / 747 VA Stand
4-5
In addition to the softkey <Help>, with parameters for which only certain numeric
values or text expressions can be entered, further softkeys with these numbers or texts
appear as keying-in aids. By pressing these softkeys, the corresponding expression is
entered directly in the entry field and the field closed.
• Enter the desired date in the order year – month – day in the format
YYYY-MM-DD and confirm the entry by pressing the <ENTER> key. The
instrument then returns to the navigation mode.
During the entry of parameters in the edit mode, you have the following possibilities
available, among others:
− Clearing entire field contents with the <CLEAR> key.
− Resetting field contents to the original value with the <ESC> key.
− Shifting the character cursor to the right or left with the <è> or <ç> key.
− Deleting individual characters with the <BACK SPACE> or <DELETE> key.
− Switching between entry mode (cursor fixed) and overwrite mode (cursor flashes)
with the <INSERT> key.
You will find further information regarding the entry of numbers and characters in section
5.2.3.
4 Setting the time
• Use the cursor key <ê> to select the entry field Time , which then be-
comes black-backed.
• If you wish to change the displayed time, follow the same sequence as
described in point 3:
− Press the space bar to enter the edit mode.
− If need be, press the softkey <Help> to display the help message
for the Time parameter. Close this window by pressing the
<ENTER> key.
− Enter the desired time in the order hours – minutes – seconds in the
format hh-mm-ss and confirm the entry by pressing the <ENTER>
key. The instrument then returns to the navigation mode.
5 Setting the screen contrast
• The contrast of the LCD can be set in steps from completely dark (value
0) to extremely bright (value 250); the set contrast value is displayed in
the Contrast parameter.
• If you wish to increase the current contrast, press the softkey
<Contrast up> repeatedly until the desired condition is reached.
• If you wish to lower the current contrast, press the softkey <Contrast
down> repeatedly until the desired contrast is reached.
There is another possibility to set the screen contrast:
Press the <SHIFT> and <é> keys simultaneously to increase the contrast continu-
ously, press the <SHIFT> and <ê> keys simultaneously to lower the contrast con-
tinuously.