Nellcor OxiMax N-550, Service Manual

Page: 106 / 138

Data Port Interface Protocol
96
Actual column headings are in the third row of the Column Heading line.
Patient data, from left to right, are the time that the chart was printed, the
current %SpO
2
value being measured, the current pulse rate in beats per
minute (bpm), the current Pulse Amplitude (PA), and the operating status of
the N-550.
Time Tag
Time Tag represents a real-time clock in: Day, Month, Year, and 24-hour
clock. The clock is maintained by either AC or battery power.
Patient Data
Patient data and the operating status of the N-550 are highlighted in the
patient data display. Parameter values are displayed directly beneath the
heading for each parameter. In this example, the %SpO
2
is 100 and the pulse
rate (PR) is 190 beats per minute. The asterisk (*) next to the 190 indicates
that 190 beats per minute is outside of the alarm limits, indicated at the
far-right end in the top row, for pulse rate. If no data for a parameter is
available, three dashes (- - -) will be displayed in the printout.
The number under PA is an indication of pulse amplitude. The number can
range from 0 to 254 and will typically range around 45. There are no alarm
parameters for this value. It can be used for trending information and indicates
a change in pulse volume, pulse strength, or circulation.
Operating Status