Xylem XL Series H-522 - Plus - Manual (Page 32)

3-2 Using The Built In Keypad / Display
XL™ Series
BATTERY INDICATOR / MONITOR LED or POWER LED
The Power light flashes on and off to show that the XL™ is receiving proper +12V
power. If the power source has failed or provides less than +10V, the power light will
stop flashing. This is a visual indication that the system battery is low.
ERROR LED
The Error light is not used at this time.
MEMORY CARD SLOT
The memory card slot accepts an industry standard ATA PCMCIA FLASH Memory
Card. When operated as a data logger, the XL™ stores the data internally in non-volatile
memory. The data can be transferred from the internal memory to an ATA FLASH
Memory Card for use in computers that have PCMCIA support. Most laptop PC’s have
PCMCIA support built into them, and desktop PC’s can be equipped with PCMCIA card
readers. PCMCIA card readers are available at most PC outlets or from Design Analysis.
All XL™ firmware updates are uploaded from an ATA FLASH Memory Card using this
memory card slot
.
ON / OFF Key
The ON/OFF key is used to turn the display on and off. This key will only turn the
display off from the top level of the menu system. If the unit is on and in a submenu, this
key, much like the CANCEL key, will cause the system to return to the previous menu
screen in the menu system hierarchy until the HOME menu screen is displayed, at which
time pressing the ON/OFF key will turn the display off.
Note: If the unit does not respond to a key press, it may be in the process of measuring.
Wait a few seconds and try again.
To save power, the XL™ display will turn off automatically after five minutes of
inactivity.
ENTER Key
The ENTER key has four functions:
I. Pressing the ENTER key while displaying a status screen such as “Stage = 2.45”
or “PtTemp = 23.65” will cause the H-350XL™ model to make a new
measurement of the selected input and update the screen with the new reading.
II. The ENTER key acts as a “YES” key on screens that are looking for a yes or no
response. For example, pressing the ENTER key on the “Erase Data ?” screen will
cause the erase process to start, but pressing the CANCEL key will abort the
option.
III. The ENTER key starts the editing process for fields that can be modified or