YSI Professional Plus - Manual (Page 10)

10 11
Number Key Description
6 Right Arrow
Use to navigate right in alpha/numeric entry
screens. Can be pressed simultaneously with
Backlight key to increase display contrast.
7 Down Arrow
Use to navigate through menus and to navigate
down in alpha/numeric entry screens.
8 Power
Press to turn the instrument on.
Press and hold for 3 seconds to turn off.
9 Help
Press to receive hints & tips during operation.
10 Enter
Press to confirm selections, including
alpha/numeric key selections.
11 Left Arrow
Use to navigate left in alpha/numeric entry screens.
Press to return to previous menu in all
screens except alpha/numeric entry.
Can be pressed simultaneously with Backlight
key to decrease display contrast.
12 Exit/Escape
Exits back to Run Screen.
When in alpha/numeric entry screen,
escapes to previous menu.
13 Up Arrow
Use to navigate through menus and to navigate
up in alpha/numeric entry screens.
MaIn dIsplay
Press the Power key to turn the instrument on. the instrument will briefly
display the splash screen with the YSI logo then go directly to the main run
screen. the first time the instrument is powered up or if the instrument
has had a battery change (with batteries removed for more than 2 minutes),
you will need to set the date and time. Follow the instructions under
System Menu | Date/Time.
the display at the left shows the run mode (main
display) with temperature in °C, barometer
in mmHg, Do in % and mg/L, and pH as the
reported parameters. the date, time and battery
level are indicated at the bottom of the screen.
the logging preference of Log one Sample at a
time is indicated at the top of the screen.
this screen also shows the message line towards
the bottom of the display above the date and
time. In this case, it doesn’t show a message
but messages will appear frequently to indicate
calibration steps, set date and time, etc.
A USB symbol will show up on the
bottom of the display when connected to a PC
through USB with the communications saddle. the instrument will display full
battery power when it is receiving power through the USB connection.
Contrast – the contrast adjustment can be accomplished by pressing
the backlight key and the left or right arrow key at the same time.
Menu layout
Press Esc at anytime in the menus to escape back to the Run screen. the
left arrow can be used to go back to the previous menu in all screens except
alpha/numeric entry screens. You must use Esc to get out of the alpha/numeric
screens if you want to exit before finishing or without saving changes. Functions
that are enabled appear as a circle with a dot  or a box with a check mark
Q .
Disabled functions appear as a circle only  or an empty P .
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