Nellcor N-180, Manual

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N-180 Pulse Oximeter Service Manual
A-2
Table A-1: Serial Data Output
Character transmitted to
monitor
String received from monitor
R (pulse rate) Rnnn
S (oxygen saturation) Snnn
P (not used) P000
L (low rate alarm limit) Lnnn
H (high rate alarm limit) Hnnn
O (low sat. alarm limit) Onnn
A (alarm status in ASCII
coded decimal
(Logic 1 equals alarm condition)
Bit 0 high rate
Bit 1 low rate
Bit 2 low sat
Bit 3 high sat
M (monitor status) (In ASCII coded decimal)
Bit Status
1 0
0 Pulse search Locked Search
1 Sensor Attached Off
2 Audio alarm Enabled Disabled
3 ECG Not in
use In use
4-7 Not used — —
T (time) T000000
Q (high saturation alarm
limit)
Qnnn