HP 48g Graphing Calculator - Manual (Page 366)

Responding to Alarms
When an appointment alarm comes due, the (<•)) annunciator turns
on, the beeper sounds at short intervals for about 15 seconds, and the
alarm message is displayed. If you press a key during the beeps, the
alarm is acknowledged, and the current appointment is deleted.
If you don’t acknowledge an alarm during the beeps, the beeper stops
and the message is cleared from the display. A repeating alarm is
normally automatically rescheduled. A nonrepeating alarm becomes
“past due,” but not deleted—the (<•>) annunciator remains on to show
you have a past-due alarm to respond to.
If you have several past-due alarms, you can view them by pressing
CSCBMI) uK . Press PLiRG to delete an alarm. Each time you
press S3(I!MD
f-iLRM HCK
, the oldest past-due alarm is deleted.
The (!•>) annunciator turns off when no past-due alarms remain.
To respond to an appointment alarm:
B While the alarm is beeping, press any key, such as [CANCEL^
m After the beeping stops, the message appears. Press f^fTIME)
H L R M H C K . (You can then press (CANCEL ) to return to the
26 stack.)
To respond to a control alarm:
■ Do nothing. You don’t acknowledge a control alarm when it comes
due—it’s automatically considered to be acknowledged. When a
control alarm comes due, a copy of the alarm index is returned to
level 1, then the specified object is executed. The alarm index is a
real number that identifies the alarm based on its chronological
order in the system alarm list—you can use it with programmable
alarm commands (described in the HP 48G Series Advanced User’s
Reference).
To acknowledge all past-due alarms at once:
■ Press (5)(TiMD R L H hi fl U K H .
It’s possible for a repeating alarm to have a short enough repeat
interval that it reschedules and executes faster than you can delete it
from the alarm list. This may occur if you mistakenly set a repeating
appointment alarm for a very short interval. It may also occur in the
26-4 Time Management