Fluke Biomedical ASM-990 Series - Manual (Page 9)

Operation
Membrane Switch/Front Panel Overview
2
2-1
Section 2
Operation
2.1 Membrane Switch/Front Panel Overview
Figure 2-1 illustrates the membrane keypad of the ASM-990 series. The function of each key is
summarized below:
a. The “ON/OFF” key is used to apply power to, or remove power from, the unit. If the unit is off when
this key is pressed, then the unit will turn on. The LCD will then display an introductory screen,
consisting of the company name, logo, and address. This screen/message will remain for a period
of five seconds. It then will revert to the operating mode (refer to Figure 2-2). If the unit’s power is
already on when this key is pressed, then the unit will turn off (i.e. no characters will be displayed
on the LCD).
b. The “AUDIO” key is used to enable/disable the audible alarm/speaker. An icon, resembling a small
speaker, will appear in the lower left corner of the LCD if this feature has been selected/enabled.
c. Depressing the “LIGHT” key will illuminate the LCD’s backlight for a time period, user menu
selected, from 5 seconds to 255 seconds. Conversely, if the backlight is already on, then pressing
this key will turn it off.
d. Pressing the “START/STOP/RST/SAVE” key will cause the unit to begin logging all subsequent
readings to internal memory (if it had previously been in the “STOP” mode). Otherwise, if the unit
had previously been in the “START” mode, it will cause the unit to cease logging readings;
however, the unit will continue to make, and display, measurements. This action will also reset the
internal counter. The “SAVE” key/function is used to manually log the current reading. It can also be
used to read the physical location, for each measurement, in barcode format (if the unit is equipped
with the barcode option).
e. The “SEL” key, when pressed, will activate the menu system. Refer to the section entitled “BASIC
OPERATION” for the correct sequence of events for each menu select item.
f. Depressing the “ESC” key will return the user to the normal operating screen. This key will only be
active after the “SEL” key has been pressed, and a menu item is currently being displayed.
g. The “UP” and “DOWN” arrow keys are used to scroll through various functions within a particular
menu.