User's Manual

7-4
Rad-87 Pulse CO-Oximeter Operator’s Manual
7
Serial Interface Specifications
The digital interface for serial communication is based on the standard RS-232 protocol. The
Rad-87 Pulse CO-Oximeter by default always outputs ASCII 1 text data through the serial port,
unless the user selects a different output mode in the Output menu. To interface with the Rad-87
and receive serial text data, simply connect a serial interface cable with a serial output connector
located on the back of the Rad-87.
NOTE: Trend data packets are collected at 2 second intervals. Each data packet contains: the
date, time, SpO
2
, perfusion index, SpMet, SpCO, SpHb, PI, pulse rate, and alarm and
exception values (in ASCII 2 format).
Serial Interface Setup
To interface with the Rad-87 serial port, set the following communication parameters on the
interfacing serial device:
PARAMETER SETTING
Baud Rate
9600 Baud bidirectional
Number of bits per character
8
Parity
None
Bits
1 start, 1 stop
Handshaking
None
Connector type
Female DB-9
The pin-outs for the RS-232 connector are shown in the following table:
PIN SIGNAL NAME
1
No Connection
2
Receive data – RS-232 ±9 V (±5 Vmin)
3
Transmit data – RS-232 ±9 V (±5 Vmin)
4
No Connection
5
Signal Ground Reference for COM signals
6
No Connection
7
No Connection
8
No Connection
9
No Connection
Serial Printer Setup
To print the SpO
2
and pulse rate data in ASCII 2 format on a serial printer, simply connect the
serial printer to the serial port and set output mode to ASCII 2. Once serial communication is
established, the Rad-87 will automatically start printing the ASCII 2 text data.
WARNING: ALL EXTERNAL DEVICE CONNECTIONS TO THE RS-232 SERIAL PORT
MUST BE IEC-60950 COMPLIANT.
Specifications