BDDF00001 Issue 5
51/56
Alaris™ Syringe Pumps
IrDA, RS232 and Nurse call Specification
RS232 / Nurse call Connection Data
RS232 / 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
- powers up the isolated RS232 circuitry
Active, High:+7V to +12V,
Inactive: Floating/open circuit, allows isolated RS232 circuitry to power down .
Isolation Socket/Pump
1 .5kV (dc, or ac peak)
Baud Rate
115 .2 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)
