Communications; Serial Output - Nonin 8500 Operator's Manual

Communications

Communications

Serial Output

Models 8500 provides real-time data output capability via the pulse oximeter sensor connector (a
9-pin Sub-D connector). The pulse oximeter sensor connector pin assignments are listed below.
Pin Number Assignment
1 1-Wire
2 Infrared Anode, Red Cathode
3 Infrared Cathode, Red Anode
4 Serial Data, TTL Levels
5 Detector Anode
6 Sensor Type
7 Cable Shield (Ground)
8 No Connection
9 Detector Cathode, +5 V
Information from the device, in the real-time mode, is sent in an ASCII serial format at 9600 baud with
9 data bits, 1 start bit, and 1 stop bit. The data are output at a rate of once per second.
Real-time data may be printed or displayed by devices other than the pulse oximeter. At start up a
header is sent identifying the format and the date and time as HH:MM:SS, where "HH" represents the
hour, "MM" represents the minutes, and "SS" represents the seconds. The data are sent once per
second in the following format:
SPO =XXX
2
where "XXX" represents the SpO
rate will be displayed as "---" if no data is available.
®
HR=YYY
value, and "YYY" represents the pulse rate. The SpO
2
and pulse
2
15