Alaris Gateway Workstation User manual

Alaris®Gateway Workstation

Technical Service Manual

This manual has been prepared for use by qualified service personnel only.

Cardinal Health cannot accept any liability for any breakdown or deterioration in performance of parts or equipment resulting from unauthorised repair or modification.

t Cardinal Health, 1180 Rolle, Switzerland

Alaris® and Asena® are registered trademarks of Cardinal Health, Inc. or one of its subsidiaries.

All other trademarks are the property of their respective owners.

© 2005-2008 Cardinal Health, Inc. or one of its subsidiaries. All rights reserved.

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Contents

Chapter
1.	General Information	4
2.	Routine Maintenance	8
3.	Troubleshooting	17
4.	Circuit Descriptions	19
5.	Spare Parts Replacement Procedures	22
Appendix
A.	Electromagnetic Compatibility	51
B.	Spare Parts Listing	56
C.	Disposal	62
D.	Service Contacts	64
E.	Document History	66

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Chapter 1

General Information

In this chapter

Introduction	5
General Precautions	6
Features of the Workstation	7

General Information

Introduction

The Alaris® Gateway Workstation (herein after referred to as "Workstation") has been designed as a modular system providing a communications gateway between the Alaris® Infusion Pump and any Patient Data Management System (PDMS), Patient Monitoring (PM) System or Clinical Information System (CIS) that requires access to the infusion data retained within the pump.

•Central management system for multiple Alaris® Infusion Pumps

•Medical Device Interface (MDI) – a unique mounting mechanism providing data communications and mains power to the Alaris® Infusion Pump

•Reduced cable clutter with the use of a single AC power inlet

•Simple to set up with adaptable modular design

•Efficient organisation of multiple infusion lines and configurations

•Battery back-up in the event of power supply interruption

•Optional high visibility beacon assists with the location of pumps in an alarm state

•Nurse call interface for all Alaris® Infusion Pumps attached to the Workstation

•Software running on the Workstation allows remote access to the device

The device supports optional upgrades to enhance the data communication interfaces and to support software for connections to such client / server systems.

Data can be accessed and the software installed on the Workstation can be configured from a client PC using a standard Web browser; this may be performed over an Ethernet network or by directly linking to the Workstation.

The software is provided under and is subject to a license from Cardinal Health, Inc.

The Asena® brand name has been recently changed to the Alaris® brand name. This change in brand name has no effect on the intended use or functionality of the product.

Product Familiarity

The Workstation provides power and communications for the complete range of Alaris® Infusion Pumps (excluding the Alaris® System).

Prior to operation of the Workstation and prior to attempting any repairs or servicing, carefully read the Directions for Use (DFU)

As part of continuous improvement, product enhancements and changes are introduced from time to time.

Purpose of this Manual

This Technical Service Manual describes how to set up, test and maintain the Workstation. This manual is intended for use by personnel experienced in medical equipment testing and maintenance procedures.

Conventions Used in this Manual

BOLD			Used for Workstation controls and indicators and Web Service software buttons referenced in this
			manual, for example, ON/OFF button, press OK to continue.
	'Single quotes'		Used to indicate cross-references made to another section of this manual. For example, see Chapter 2,
			'Configuration & Calibration'
underline			Used to indicate links to another section of this manual.
Italics			Used to refer to other documents or manuals. For example, refer to the relevant Directions for Use (DFU)
			for further information. Also used for emphasis, for example, ...position the narrow end of the tool...
			Wherever this symbol is shown a Hints & Tips note is found. These notes provide useful advice or
			information that may help to perform the task more effectively.

Wherever this symbol is shown a Toolbox note is found. These notes highlight an aspect of test or maintenance that is important to know about. A typical example is drawing attention to a software upgrade that should be checked that it has been installed.

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General Information

General Precautions

wPrior to using the Workstation, carefully read the Operating Precautions in the Directions for Use (DFU).

VThis Workstation contains static sensitive components. Observe strict precautions for the protection of static sensitive components when attempting to repair and service the Workstation.

BAn explosion hazard exists if the equipment is used in the presence of flammable anaesthetics. Exercise care to locate the equipment away from any such hazardous sources.

ADangerous Voltage. An electrical shock hazard exists if the Workstation casing is opened or removed. Refer all servicing to qualified service personnel.

If the equipment is dropped, subjected to excessive moisture or spillage, humidity or high temperature, or otherwise suspected to have been damaged, remove it from service for inspection by qualified service personnel.

Refer all servicing to qualified service personnel only. Circuit board repairs are not recommended - replacements are available.

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General Information

Features of the Workstation

Horizontal 4 tile assembly

3 MDI Tile Base Unit

Front View

Vertical 2 tile assembly

Base Module

Tile Warning
Indicator
				A/B Status
Battery				Indicators
Indicator				ON Status
				Indicator
AC Power				System Fault
Indicator
ON/OFF	Rear View			Indicator
Barcode Reader				RS232 Serial Interface
				(optional)
RS232 Serial Interface				RS232 Serial Interface
				(optional)
(optional)
Nurse Call				Auxiliary
Interface				Interface
Standard RS232				Ethernet
Serial Interface				Interface
				Potential
				Equalisation (PE)
	115-230V		115-230V	Connector
	~50-60Hz	AUX
	350VA		~50-60Hz
AC Power				AC Power
Input				Output

a			ON/OFF Button	Press once to switch the Workstation on. Press and hold for 1 second to switch
				the Workstation off. In the event that the system needs to be reset, depress and
				hold for at least 4 seconds, then press again to switch the Workstation on.
j			Battery Indicator	When illuminated the Workstation is operating from the internal battery; when
				flashing the battery power is depleted.
k			AC Power Indicator	When illuminated the Workstation is connected to the AC power supply and
				the battery is being charged.
			‘A’ Status Indicator	Provides a visual indication that the software is operational.
			‘B’ Status Indicator	Provides a visual indication that the network is operational.
			‘ON’ Status Indicator	When illuminated the Workstation is operational.
w			System Fault Indicator	The Workstation will illuminate this indicator when an internal fault is present
				and detected.
				(Consult accompanying documents for further information).

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Chapter 2

Routine Maintenance

In this chapter

Required Test Equipment	9
Required Tests	9
Electrical Safety Test	10
Power-up Check	12
Beacon (where fitted)	12
Pump Loading/Removal Checks	12
Battery Test	13
Setting the Time and Date	14
Recommended Cleaning and Inspection	15
Performance Verification Procedure	16

Routine Maintenance

Required Test Equipment

The following test equipment is required to perform the tests in this chapter.

1.Metron QA-90 Medical grade electrical safety tester

2.PC with Ethernet LAN connection, COM port and Internet Explorer 6.0 installed

3.Cat5e Ethernet cable (2m)

4.Cat5e Ethernet Crossover cable (2m)

5.Alaris® Infusion Pump with IrDA enabled which has been serviced within the past 12 months.

6.IEC AC Mains Lead, straight, 134748 (5A)

Required Tests

The following tests are required to test the different Workstation configurations.

			Workstation Configuration
		Auxiliary	Workstation	Workstation with
	Functional test	Workstation		Wireless LAN
			(Option 2)
		(Option 1)		(Option 3)
	Electrical Safety Test
	Power-up check
	Beacon (when fitted)
	Pump Loading/Removal Test
	Battery Test
	Setting the Time and Date

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Routine Maintenance

Electrical Safety Test

The Electrical Safety Test MUST be performed twice.

The first test will ensure the PE and Insulation Resistance are acceptable for safe AC power application.

The second test, with the Workstation on AC power, is to ensure the Leakage Current values are correctly measured.

Electrical Safety Test Calibration

Ensure that no physical contact is made with the unit under test during the electrical safety test cycle.

Connect a Medical grade electrical safety tester, (e.g. Safety Tester) to a main's outlet, ensuring that the connections for Live and Neutral are correct.

1.Connect the enclosure lead to the PE point of the Workstation. Plug the mains test lead from the safety tester into the Workstation mains inlet.

2.Switch on the Workstation.

3.Set up and perform a standard electrical safety test to IEC/EN60601-1 Class I, using an Earth Continuity test current of 25A. If the safety tester requires an applied 'Type' to be entered, select 'Type B' but no applied parts should be specified.

The required test result limits are as follows:

Current Consumption	<300mA
Protective Earth Resistance (all test points)	<100mΩ
Insulation Resistance	>200MΩ
Earth Leakage Current:
Open Supply (OS)	<1000μA
Normal Condition (NC)	<500μA
Open Supply Reverse Mains (OSRM)	<1000μA
Normal Condition Reverse Mains (NCRM)	<500μA
Enclosure Leakage Current:
Open Supply (OS)	<500μA
Normal Condition (NC)	<100μA
Open Earth (OE)	<500μA
Open Supply Reverse Mains (OSRM)	<500μA
Normal Condition Reverse Mains (NCRM)	<100μA
Open Earth Reverse Mains (OERM)	<500μA

First Electrical Safety Test

PE Connector - Earth Continuity Test

1.Connect the AC lead from the Safety Tester to the Workstation Mains Inlet.

2.Connect the enclosure lead from the Safety Tester to the PE stud on the rear cover of the Workstation with a crocodile clip.

3.Perform the Earth Continuity Test.

4.Disconnect the enclosure lead from the PE stud.

IEC Mains Outlet Screw/Tile - Earth Continuity Test

1.Apply the free end of the enclosure lead firmly to one of the IEC Mains Outlet screws on the bottom tile.

2.Perform the Earth Continuity Test.

3.Repeat the test for one screw on every IEC Mains Outlet in turn.

4.Repeat the test for one screw on the tile plate.

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Electrical Safety Test continued

Tile Module/Mounting Bar - Earth Continuity Test

1.Fit a high current probe to the enclosure lead.

2.Firmly apply the probe point to one of the module tile plate mounting screws.

3.Perform the Earth Continuity Test.

4.Repeat the test for each tile plate mounting screws in turn.

5.Carefully apply the probe point to one end of the tile mounting bar.

6.Perform the Earth Continuity Test.

7.Repeat the test for each tile mounting bar in turn.

Note: Ensure that, in all cases, the resistance to earth of any continuity test DOES NOT exceed 100mΩ.

IEC Outlet Earth Pin - Earth Continuity Test

1.Connect the enclosure lead to the Tile IEC Earth Point.

2.Fit the test equipment to the rear IEC Mains Outlet.

3.Perform the Earth Continuity Test.

4.Repeat the test for each IEC Mains Outlet in turn.

Note: Ensure that, in all cases, the resistance DOES NOT exceed 100mΩ.

Insulation Resistance Test

1.Disconnect the Earth Lead from the Tile IEC and reconnect the enclosure lead to the crocodile clip.

2.Attach the crocodile clip to the PE stud on the rear cover of the Workstation.

3.Perform the Insulation Resistance Test.

Second Electrical Safety Test

Earth and Enclosure Leakage Current Test

Ensure all Earth Continuity Tests and the Insulation Resistance Test results pass before proceeding with the Earth and Enclosure Leakage Current Test.

1.Connect the Safety Tester AC lead to the Workstation Mains Inlet.

2.Ensure that the enclosure lead is connected to the PE stud. Ensure that the Battery Indicator on the front panel keypad is illuminated. If the Battery Indicator is flashing or is not illuminated, the Workstation will require charging for at least 30 minutes before proceeding.

3.On the Safety Tester, conduct a single Earth Continuity Test.

4.Disconnect the Safety Tester from the Workstation.

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Routine Maintenance

Power-up Check

This test checks that the speaker and the keypad LEDs are operating correctly after power-up.

1.Observing the front panel keypad, connect the Workstation to the AC Mains supply using an IEC Mains Lead and ensure that the AC Power Indicator is illuminated.

2.Switch the Workstation on using the ON/OFF button.

3.Check that the 'ON' Status indicator is illuminated, the System Fault indicator flashes rapidly and the secondary speaker produces a beep. After a few seconds, the primary speaker, situated at the rear of the Workstation, will produce a tone.

4.The secondary speaker will then buzz for 1 second followed by a 1 second tone from the primary speaker.

5.The 'A' Status indicator will start flashing once per second.

6.After 30 seconds, the 'B' Status indicator will flash approximately once every 30 seconds.

Beacon (where fitted)

This test checks that the Beacon is working correctly.

1.Connect the Workstation to the AC Mains supply using an IEC Mains Lead and ensure that the AC Power Indicator is illuminated.

2.Observing the end Beacon, switch the Workstation on using the ON/OFF button.

3.Check the red LED on the Beacon glows dimly.

4.Check that the red LED on the beacon flashes brightly and then dims.

5.Check that the amber LED on the beacon flashes brightly and then dims.

6.No more beacon activity should occur unless a pump is alarming.

Pump Loading/Removal Checks

Connect the Workstation to the AC Mains supply using an IEC Mains Lead and ensure that the AC Power Indicator is illuminated. Load pump to each tile in turn and check:

•Pump is properly located on its electrical connectors

•Pump is mechanically locked into position

•Pump mains indicator turns on when fully fitted

When removing the pump from the tile check:

•Pump mains indicator turns off

•Check that the red LED on the tile turns OFF when the pump is removed. If the LED stays ON, the Workstation should be serviced by a qualified service engineer.

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Routine Maintenance

Battery Test

This test verifies that the battery is functioning correctly, with and without AC mains attached to the Workstation:

Barcode Reader

Connector

Nurse Call

Connector

Rear View of	Cat5e Ethernet	Test PC
Workstation	Crossover Cable	with Wireless LAN card

1.Connect the Workstation to the test equipment as shown. Connect Workstation to AC mains using IEC Mains Lead.

2.Connect the Cat5e crossover cable between the Auxiliary Connector port on the rear of the Workstation and the test PC ethernet port.

3.Switch on the Workstation. Wait for the Workstation to initialise (approx. 45 seconds).

4.Manually set the test PC's IP address to 192.168.0.130, Subnet mask 255.255.255.0.

5.On the Test PC, launch Internet Explorer. In the address bar at the top of the screen enter the following address: http://192.168.0.128

6.Confirm that the Workstation web service startup page is displayed. Click the Refresh icon and confirm that the startup page continues to be displayed when the refresh is complete.

7.Click OK on the startup screen.

8.Check that, at the bottom right hand corner of the monitoring page on the test PC, the battery symbol shows a capacity percentage of between 5% and 100%. If the capacity is less than 5% then the Workstation must remain connected to AC mains until the capacity reaches 50%.

9.Remove the AC mains lead and ensure that the Workstation continues to operate and shows a capacity percentage of between 5% and 100%. If the unit does not operate or shows a percentage less than 5% then it is likely that a battery sub-system fault has

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Setting the Time and Date

1.Ensure that the Cat5e crossover cable between the Auxiliary Connector port on the rear of the Workstation and the test PC ethernet port.

2.Connect the Workstation to AC mains using an IEC Mains Lead. Switch on the Workstation.

3.Manually set the test PC's IP address to 192.168.0.130, Subnet mask 255.255.255.0.

4.On the Test PC, launch Internet Explorer. In the address bar at the top of the screen enter the following address: http://192.168.0.128

5.Click OK on the startup screen. Confirm that the tile monitoring page is displayed.

6.Click on Date & Time in the navigation panel on the left of the screen. The following screen is displayed:

7.Enter the correct date and correct time .

8.Click Update to confirm.

9.Click on Event Logs in the navigation panel on the left of the screen. An entry for Time Changed and Date Changed at the bottom of the list indicates that the time and date have been updated successfully.

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Routine Maintenance

Recommended Cleaning and Inspection

Cleaning the Workstation: -

Before the transfer of the Workstation to a new patient and periodically during the use, clean the Workstation by wiping over with a lint-free cloth lightly dampened with warm water and a standard disinfectant / detergent solution.

Recommended cleaners are:

Brand	Concentration
Hibiscrub	20% (v/v)
Virkon	1% (w/v)

Do not use the following disinfectant types:

-NaDcc (such as PRESEPT)

-Hypochlorites (such as CHLORASOL)

-Aldehydes (such as CIDEX)

-Cationic Surfactants (such as Benzalkonium Chloride)

-Iodine (such as Betadine)

-Concentrated Isopropyl alcohol based cleaners will degrade plastic parts.

Before cleaning always switch OFF and disconnect from the AC power supply.

Never allow fluid to enter the casing and avoid excess fluid build up on the pump.

Do not use aggressive cleaning agents as these may damage the exterior surface of the Workstation.

Do not steam autoclave, ethylene oxide sterilise or immerse this Workstation in any fluid.

To ensure that this Workstation remains in good operating condition, it is important to keep it clean and carry out the routine maintenance procedures described below.

Interval	Routine Maintenance Procedure
When loading pumps	Check that each pump is properly located on its electrical connectors and is mechanically locked into position.
When removing pumps	Check that the red LED turns OFF on the Tile Plate when the pump is removed. If the LED stays ON, the
	Workstation should be serviced by a qualified service engineer.
As required	Thoroughly clean external surfaces of the equipment before and after prolonged periods of storage.
12 Monthly	Inspect AC outlets, communication connectors and the AC inlet for damage.
	Perform electrical safety checks. The complete unit leakage current must be measured. If more than 500μA the
	equipment should not be used, but should be serviced by a qualified service engineer.

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	Routine Maintenance
Performance Verification Procedure
Model / Serial Number:		Service Order / Inventory Number:
Hospital Name / Reference:			Software Version:
INSPECTION	Physical inspection and clean
OPERATION CH2	Power-up Check
	Ensure that the speaker and Keypad LEDs are functioning correctly.
	Check Beacon operation (if fitted).
	Pump Removal/Loading Checks
	Battery Test
SETUP CH2	Set the correct Date and Time.
	Class I (no applied parts)
	Perform tests with no pumps attached
ELECTRICAL	Earth Resistance Test <= 200mΩ
SAFETY TESTS CH2	Earth Leakage Current <= 500 μA
	Enclosure Leakage Current <= 100 μA
	attach printed test results
Verification
Performed	_______________________________	_____________________________			__________________________
By
	Sign	Print			Date

CHX indicates the chapter number in the Technical Service Manual (TSM) - 1000SM00015.

E.G. CH2 = Refer to TSM Chapter 3.

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Chapter 3

Troubleshooting

In this chapter

Troubleshooting Guide

18

Troubleshooting

Troubleshooting Guide

Warnings

Use extreme caution when servicing equipment whilst it is connected to the AC mains.

This equipment contains static-sensitive components. Wherever the ESD symbol V appears observe strict precautions for the protection of static-sensitive components when attempting to service and repair the equipment.

Always visually inspect the tiles, communications cables and connectors, power cord and plug for damage. If the power cord or plug are damaged they should be replaced.

Should further technical assistance be required call your local Cardinal Health Service Centre.

Workstation has been Dropped or Damaged

If the equipment is damaged, the damaged parts should be identified and replaced before any further troubleshooting is carried out.

During inspection, careful attention should be paid to the power tile and each docking tile, which may be damaged if the docking station is dropped.

Workstation has been Exposed to Fluids

Excessive fluid spills can lead to fluid ingress into the docking station. Even if the fluid dries out, deposits can be left which cause the equipment to fail.

If fluid ingress is suspected the docking station should be inspected internally.

Clean and dry out the equipment.

Take care to ensure dried out deposits do not remain on the PCBs or other electrical components. Replace permanently damaged tiles.

Workstation Will Not Power from AC Supply

First check the function of the AC power cable with another piece of working equipment.

Check that the AC power is switched on at the outlet, if applicable.

Check that the power cord is seated properly in the AC power inlet. Also check the fuse in the AC power plug.

If the AC Power switch does not illuminate when the pump is connected to a live AC cable, check the fuses at the AC power inlet.

Power Not Present at Pump

Check that the docking station is switched on and has power.

Check that the pump is correctly seated on the tile.

Hold a magnet next to the Infra-Red communications port on the tile. If the Warning LED does not light up the tile must be replaced. If the LED does light up, suspect a problem with the pump and remove from service to be examined by qualified service personnel.

Warning LED Remains Lit when Pump is Removed from Tile

Replace the complete tile, following the instructions in chapter 5 'Spare Parts Replacement Procedures'.

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Chapter 4

Circuit Descriptions

In this chapter

Functional Module Block Diagram	20
Module Overview Functional Description	21

Circuit Descriptions

Functional Module Block Diagram

The Alaris® Gateway Workstation

The Workstation has been designed as a modular system providing a communications gateway between the Alaris® Infusion Pump and any Patient Data Management System (PDMS), Patient Monitoring (PM) System or Clinical Information System (CIS) that requires access to the infusion data retained within the pump.

The device supports optional upgrades to enhance the data communication interfaces and to support software for connections to such client / server systems.

The user can access data and configure software installed on the Workstation from a client PC using a standard Web browser; this may be performed over an Ethernet network or by directly linking to the Workstation.

The software is provided under license from Cardinal Health, Inc.

Feature Summary

•Central management system for multiple Alaris® Infusion Pumps

•Medical Device Interface – a unique mounting mechanism proving data communications and mains power to the Alaris® Infusion Pump

•Reduced cable clutter with the use of a single AC power inlet

•Simple to set up with adaptable modular design

•Efficient organisation of multiple infusion lines and configurations

•Battery back-up in the event of power supply interruption

•High visibility beacon assists with the location of pumps in an alarm state (where fitted)

•Nurse call interface for all Alaris® Infusion Pumps attached to the Workstation

•Software running on the Workstation allows remote access to the device

Electronics Architecture
The Alaris® Gateway Workstation
Key			Services Board PCB*				J2	RS232 Serial Port - Com2**
Data Lines
						4 Port RS232		RS232 Serial Port - Com3**
Power Lines			Quad UART	J4	J1		J3
Combination						Serial Isolation
			Internal			PCB**	J4	RS232 Serial Port - Com4**
* Available as a User Option				J7
			USB 1
** Not available at time of initial release								RS232 Serial Port - Com5**
							J5
			Internal	J10
			USB 2
			PCMCIA	J8	CiscoAIR-LMC 352*			CiscoAIR-ANT4941*
Expansion	J5	J5	Audio (Mono)	J11				Speaker
Expansion	J6	J6	LVDS	J13				Colour LCD Display with
			Display
LVDS	J3	J14	UART 1	J12				Resistive Touchscreen**
Display
Compact	J1		Barcode	J15				Barcode Reader*
Flash			Reader
AA1100			Isolated	J14				RS232 Serial Port - Com1
			RS232
Single Board Computer*
			Isolated
				J3	J1		J2	External Network RJ45
			Ethernet
128MByte CF Card*
							J5	Nurse Call Interface
						Ethernet	J4	Auxiliary Gateway RJ45
						Isolation PCB*
							J6
			Internal	J9			J3
			Network
				J1	J2	Internal	J3
						Network
Keypad / Status LEDs				J2		Nurse Call	J5
Battery Pack		J2	Power	J4			J13	Visual Status Indicator
Power and	J1							AC Power to Pumps
Control		J6	LVPS Control	J3
+15v Power	J1	J6	Power	J5	J1	Tile PCB		IrDA Interface to Pumps
Mains Power	J1
Power Supply Unit								Mains	Mains
								Inlet	Outlet
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Circuit Descriptions

Module Overview Functional Description

Services Board and Single Board Computer

The Single Board Computer (SBC) is an off the shelf processor board supplied to Cardinal Health, Inc. by DSP Designs. The SBC connects both mechanically and electrically to the Services Board PCB which provides the processor with the peripheral external interfaces. The SBC also contains the 128 MByte Compact Flash card. Also available on the Services Board is a PCMCIA connector into which attaches the Cisco wireless card and antenna.

Low Voltage Power System Board

The Low Voltage Power System Board (LVPS) provides the Workstation with low voltage DC power. The LVPS Board gets power from the PSU module connected to the AC mains supply. A smart rechargeable battery pack is connected to the LVPS Board as a second power source used when the AC mains is unavailable; this makes the LVPS Board act as a UPS.

The LVPS Board has an on-board charger that is responsible for keeping the smart battery pack charged. The LVPS Board provides regulated 3.3V and 5V to the Services Board and also provides either +15V from the power supply or battery terminal voltage to the Tile Boards. The circuitry for switching on and off the Docking Station is on the LVPS Board, which the User activates with an externally mounted keypad.

Tile Board

In the Workstation the Tile Board provides the interface to the pumps providing power (directly from the AC mains) and an IrDA port for communication with the pumps. The Tile board itself communicates via the Internal Switched Ethernet to the SBC. The Tile board also controls the Visual Status Indicator and Nurse Call interface directly without the need for the SBC to be fitted.

The Tile Board is designed in four different configurations:

•Vertical mount, two tiles high

•Vertical mount, three tiles high

•Horizontal mount, two tiles wide

•Horizontal mount, three tiles wide

To enable the modular construction, Tile Boards connect in series to extend the number of tiles within the Workstation as the configuration shape grows.

Ethernet Isolation Board

The function of the Ethernet Isolation Board is to provide electrical separation between the internal electronics of the Workstation and the external Ethernet connections. This board isolates both the primary 10 Base T / 100 Base-Tx interface and also the Ethernet connection with an Auxiliary Docking Station. The board also provides the relay for the nurse call function.

Power Supply Unit

The Power Supply Unit (PSU) converts AC mains voltage into +15VDC used to power all electronic sub-systems within the Workstation when AC mains is connected. The AC mains input is implemented as a spur off the Live and Neutral wiring within the device that also provides AC mains power to the pumps and to the AC mains outlet connector.

Battery Pack

A 9.6v, 2.7A internal battery provides a UPS function should a temporary disconnection from the AC mains power supply occur. The NiMH battery pack includes a gas gauge and supports the SMB interface.

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