1000DF00005 Iss. 2
35/44
IrDA / RS232 / Nurse Call Feature
The IrDA (or RS232 / Nurse Call optional feature) is a feature on
Alaris® Syringe Pumps that allows the pump to be connected to a
PC or other Alaris® Syringe Pumps. This allows data to be transferred
between the Alaris® Syringe Pump and a PC or another Alaris®
Syringe Pump.
A
The nurse call interface provides a remote
backup to the internal audible alarm. It should
not be relied upon to replace monitoring of the
internal alarm.
Refer to the Technical Service Manual for further
information regarding the RS232 interface.
Since it is possible to control the syringe pump
using the RS232 interface at some distance from
the pump and hence remote from the patient,
responsibility for the control of the pump is
vested in the software run on the computer
control system.
The assessment for the suitability of any software
used in the clinical environment to control or
receive data from the pump lies with the user
of the equipment. This software should include
detection of the disconnection or other failure
of the RS232 cable. The protocol is detailed in
the Technical Service Manual and is for general
information only.
Any connected analogue and digital components
are required to meet IEC/EN60950 for data
processing and IEC/EN60601 for medical devices.
Anyone connecting additional devices to the
signal input or output is a system configurator
and responsible for meeting the requirements
of the system standard IEC/EN60601-1-1.
Nurse call Specification -
Connector
D Type - 9 Pin
TXD/RXD
EIA RS232-C Standard
TXD Output Voltage Range
Minimum: -5V (mark), +5V
(space)
Typical: -7V (mark), +7V (space)
with 3kΩ load to ground
RXD Input Voltage Range
-30V - +30V max.
RXD Input Thresholds
Low: 0.6V minimum / High: 3.0V
maximum
RXD Input Resistance
3kΩ
minimum
Enable
Active, Low:-7V to -12V
Active, High:+7V to +12V,
powers up the isolated RS232
circuitry
Inactive: Floating/open circuit,
allows isolated RS232 circuitry
to power down.
Isolation Socket/Pump
1.5kV (dc, or ac peak)
Baud Rate
38.4 kBaud
Start Bits
1 Start Bit
Data Bits
8
Data
Bits
Parity
No
Parity
Stop Bits
1
stop
bit
Nurse Call Relay Contacts
Pins 1, 8 + 9, 30V dc, 1A rating
Typical Connection Data -
1 Nurse call (Relay) Normally Closed (NC C)
2 Transmit Data (TXD) Output
3 Received Data (RXD) Input
4 Power Input (DSR)
5 Ground (GND)
6 Not used
7 Power Input (CTS)
8 Nurse call (Relay) Normally open (NC O)
9 Nurse call (Relay) Common (NC COM)
RS232 / Nurse Call Connection Data
IrDA
Baud Rate
38.4 kBaud
Start Bits
1 Start Bit
Data Bits
8 Data Bits
Parity
No
Parity
Stop Bits
1
stop
bit
IrDA, RS232 and Nurse Call Specification