Covidien Nellcor OxiMax N-560, Руководство по обслуживанию

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Technical Discussion
N-560 Service Manual 115
beep volume) are used by the N-560 until it is turned off. Default values will
be restored when the N-560 is turned back on.
Patient Data is stored by the N-560 and can be downloaded to a printer
through the data port provided on the back of the N-560. An in-depth
discussion of the data port is covered in the
Data Port Interface Protocol
on
page 95.
Charging Circuits
The power supply will charge the battery any time the N-560 is connected to
AC power. The voltage applied to the battery is 14 ±0.15 volts DC.
Real-Time Clock (RTC)
Real time is counted by the DS1307 Real-Time Clock. As long as lithium
battery power or AC power is available, the N-560 will keep time. If the
lithium battery is removed, the time clock must be reset.
Storage of Patient Data
Whenever the N-560 is turned on, it stores a “data point” in memory every
four seconds (regardless of whether the N-560 is monitoring a patient or not).
Alarm limit changes will also be stored in trend data. The N-560 can store up
to 24 hours of trend data. There are no limitations on displaying or printing
data.
The N-560 trend data will be lost if the battery fails or is removed.
CAUTION : Changing alarm limit settings uses up trend memory space.
Change alarm limits only as needed.
Note
: Trend memory always contains the MOST RECENT 24 hours of
data, with newly collected data over-writing the oldest data on a rolling basis.
The N-560 continues to record data points as long as the N-560 is powered on,
with “blank” data points collected if no sensor is connected to the N-560 or
patient. “Blank” data will over-write older patient data if the memory
becomes full. Therefore, if you want to save old patient data, it is important
that you turn your N-560 off when you are not monitoring a patient before it
fills up and over-writes the old data with new data (or “blank” data).