7-4 Rad-8 Signal Extraction Pulse Oximeter Operator’s Manual
7
specifications
SERIAL INTERFACE SETUP (CONTINUED)
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 ASCII1 format on a serial printer, simply connect
the laser printer to the serial port and set output mode to ASCII1. Once serial communi-
cation is established, the Rad-8 automatically will start printing the ASCII1 text data.
WARNING: ALL EXTERNAL DEVICE CONNECTIONS TO THE RS-232 SERIAL
PORT MUST BE IEC-60950 COMPLIANT.
Nurse call specifications
The nurse call features are accessible via the 1/4” round female connector on the back
of the unit.
NURSE CALL
The nurse call feature on the Rad-8 Pulse Oximeter is based on the relay closing or
opening depending on alarm, Low Signal IQ events or both. In addition the nurse call
polarity can be inverted to accommodate various nurse call stations requirements.
The nurse call relays have the following electrical specification per switch:
PARAMETER SPECIFICATION
MAX VOLTAGE 36 VDC or 24 VAC peak
WARNING: THE NURSE CALL FEATURE IS DISABLED WHEN THE AUDIBLE
ALARMS ARE SILENCED WHILE THE NURSE CALL SETTING IS SET TO
“ALARMS”.
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