YSI 6 series User Manual page 142

650 MDS Section 3
3.2.8 USING THE YSI 650 KEYPAD
On/Off Backlight
Arrows
Escape Key
Enter Key
Alpha/Numeric Keys
Minus/Hyphen (-) Key
Period (.) Key
The 650 keypad allows the user to navigate various sonde and 650 menu selections and to make
alpha/numeric entries into both the 650 and sonde software. The arrow keys are used to select various
options in the menus; the cellular phone-style alpha/numeric keys allow data entry; the Enter key is used to
confirm selections; and the Escape key returns the user to the previous position in the menu structure.
The alpha/numeric keys of the 650 can be used to enter both numbers and letters. For many entries,
however, where only numbers are appropriate, the software automatically allows ONLY numeric entry,
e.g., the letters (ABC) associated with the "2" key cannot be activated. Examples of this type of fixed
numeric entry include setting the clock of the 650 or sonde, entering calibration parameters for sonde
sensors, and changing entries such as DO warm-up time and optical wiper interval in the Sonde
Advanced|Sensor submenu. You will follow an example of this type of entry when you set the 650 clock
in the example below.
When both numeric and alpha entry are appropriate for input, the 650 keypad provides a cellular phone-
style interface for choosing the proper character. As shown in the above diagram, the 2-9 keys can also be
used to input alpha characters. Basically, to activate a particular alpha/numeric character, the user must
press the appropriate key repeatedly until the desired letter or number appears in the display. For example,
to enter an M, press the numeric 6 key once and release. To enter an N, press the numeric 6 key twice in
rapid succession and then release. Lower case letters are also available for input using this basic method.
The following chart shows the alpha/numeric sequence available for each numeric key in the order they
will appear as the key is pressed repeatedly.
YSI Environmental Monitoring Systems Operations Manual 3-12