Spacelabs 90217, 90217Q User manual

Ambulatory Blood Pressure

Monitor

90217/90217Q

Service Manual

070-0502-00 Rev. F

more time to care

© 2004 Spacelabs Medical, Inc.

All rights reserved. Contents of this publication may not be reproduced in any form without the written permission of Spacelabs
Medical. Products of Spacelabs Medical are covered by U.S. and foreign patents and/or pending patents. Printed in U.S.A.
Specifications and price change privileges are reserved.

Spacelabs Medical considers itself responsible for the effects on safety, reliability and performance of the equipment only if:

• assembly operations, re-adjustments, modifications or repairs are carried out by persons authorized by Spacelabs
Medical, and

• the electrical installation of the relevant room complies with the requirements of the standard in force, and

• the equipment is used in accordance with the operations manual.

Spacelabs Medical will make available, on request, such circuit diagrams, component part lists, descriptions, calibration instructions
or other information which will assist appropriately qualified technical personnel to repair those parts of the equipment which are
classified by Spacelabs Medical as field repairable.

Spacelabs Medical is committed to providing comprehensive customer support beginning with your initial inquiry through purchase,
training, and service for the life of your Spacelabs Medical equipment.

CORPORATE OFFICES

U.S.A.

Spacelabs Medical, Inc.
5150 220th Ave SE
Issaquah, WA 98029
Telephone: [phone]
Telephone: [phone]
Fax: [phone]

Authorized EC Representative
UNITED KINGDOM

Spacelabs Limited
71 Great North Road, Hatfield
Herts AL9 5EN
Telephone: [phone]
Fax: [phone]

BirthNet, Data Shuttle, Flexport, Intesys Clinical Suite, Maternal Obstetrical Monitor, MOM, Mermaid, Multiview, PCIS, PCMS,
PrintMaster, Quicknet, Sensorwatch, TRU-CAP, TRU-CUFF, TRU-LINK, UCW, Ultralite, Ultraview, Ultraview Clinical Messenger,
Ultraview SL, Uni-Pouch, Universal Flexport, Varitrend and WinDNA are trademarks of Spacelabs Medical, Inc.

Other brands and product names are trademarks of their respective owners.

CAUTION:

US Federal law restricts the devices documented herein to sale by, or on the order

Rx

Only

of, a physician.

Table of Contents

Contents

Introduction

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

User Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Programming Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Setup

Installing the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Initializing the Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Operational Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Theory

Pressure Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Oscillometric Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

90217 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Digital Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Unit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Software Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Maintenance

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Calibration Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Operational Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Manifold Kit - P/N 050-0110-xx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Troubleshooting

Monitor Event Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Base Station Report Event Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Problem Solving Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Parts

90217 Field Replaceable Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Symbols

Appendix A — Electromagnetic Compatibility

Electromagnetic Emissions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Electromagnetic Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Frequency Separation Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

i

Contents

Overview

The Model 90217 is a small, lightweight battery-powered Ambulatory Blood Pressure (ABP)
monitor that uses the noninvasive Oscillometric method to measure blood pressure and heart rate.
This data is then stored into memory for later transfer to an ABP Analysis System
(FT1000A/FT2000A or equivalent), a PC Interface, a Base Station, or a Report Generator for data
analysis, report printing, and archiving.

The 90217 monitor is housed in a plastic case with a removable battery cover that provides access
to its three AA cells. Inside the monitor are three printed circuit boards: the Main, Power, and
Display boards.

Introduction

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

User Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Programming resides in an internal 128 KB RAM and microprocessor ROM. Most of the code
exists in the RAM and can be updated via an infrared (IR) serial port located at the rear of the unit.
The internal ROM contains a boot code and other codes for downloading and completing special
tasks.

The IR serial port transfers collected data to a report generator and sends setup changes to the
ABP monitor.

A rechargeable lithium battery keeps the RAM and real-time clock backed up during periods when
the AA batteries are removed.

Note:

Beginning with August 2004 shipments, all 90217 models have a “Q” suffix, indicating a quick­disconnect fitting for cuffs. Prior versions had a Luer fitting. This manual includes information
relating to both.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

User Controls

The 90217 ABP monitor provides two user controls: a START/STOP button and a Power ON/OFF
switch.

Display

Power ON/OFF Switch

When turned ON, this switch activates the monitor and begins executing the timed blood pressure
program.

START/STOP Button

This front panel control manually starts a blood pressure measurement, stops a measurement
already in progress, or sets special modes of operation (refer to the 90207, 90217 Ambulatory
Blood Pressure Monitors Operations Manual, P/N 070-0137-xx).

The monitor display is a 4-digit LCD that presents the following information (refer to the 90217
Ambulatory Blood Pressure Monitors, Operations Manual (P/N 070-0137-xx) for instructions on
use).

Systolic/Diastolic Pressure and Heart Rate

Patient information appears on the display sequentially with systolic first, diastolic next, and then
heart rate. Each parameter appears for approximately one second. The screen is blanked for one
second and the sequence of readings is re-displayed two more times.

A bar indicator at the left of the display identifies which parameter is currently being displayed. It
appears next to the “sys” for systolic, next to “dia” for diastolic pressure, and next to the heart
symbol for heart rate.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Time of Day

A real-time clock provides the time of day, which appears between measurement cycles and can
be programmed in either a 12- or 24-hour mode.

Cuff Pressure

This pressure can be shown while the monitor is taking a measurement. If cuff pressure is not
selected, “----” appears. Cuff pressure can be enabled or disabled in software.

Event Code

Event codes are 4-digit LCD messages that begin with “EC” or, in some cases, show specific
codes such as “LLL” for a low battery. If enabled, a beep sounds during an event code and the
code is displayed on the monitor. Refer Troubleshooting on page 5-1 for event code information.

Count Down Sequence

Whenever the monitor begins a measurement cycle, it turns its tone ON (if beep is enabled) and
counts down from 5555 to 1111 on the display.

IR Communications

Introduction

During IR communications, the monitor first displays 9999 on the LCD to indicate that it has
detected a cable connect and has gone into the communication mode. The monitor periodically
attempts to contact a modem. The left two digits on the monitor display indicate the steps in the
communication process. For more information, refer to Base Station via Modem on page 2-3.

Programming Options

These monitor options are user programmed:

Day or Night Modes

Day mode = beeper ON, inflation time approximately 15 seconds

Night mode = beeper OFF, inflation time approximately 20 seconds

Measurement Intervals and Periods

Measurement intervals are selectable from 6 to 120 minutes (in one minute increments) for each
period. It is also possible to not have readings taken during a specified period. Up to 12 periods
may be defined.

Clinical Verification Mode

When set to this mode, the monitor is forced to bleed to 40 mmHg or to one step below diastole
(whichever is lower) for each reading.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Office Check Mode

This mode verifies monitor operation and allows a user to view cuff pressure and blood pressure
results regardless of any previous disabling of the display. During Office Check Mode, the monitor
bleeds an additional pressure step below diastole.

This mode is enabled for the first five successful blood pressure readings (or attempted readings)
following monitor initialization. Office Check can be disabled by a patient cancel and can be re­enabled after turning the power switch ON and holding the START/STOP button in while the last
digit of the software version number is displayed.

Blood Pressure/Heart Rate Measurements Displayed

These measurements can be selected to appear or not to appear at the end of a measurement.

Cuff Pressure Displayed

This measurement can be selected to appear or not to appear during the measurement cycle.

1-4

Contents

Installing the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Initializing the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operational Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installing the Batteries

Two types of batteries are used in the 90217 ABP Monitor: three standard AA batteries (Spacelabs
Medical P/N 146-5011-xx) to power the cuff air pump, and one rechargeable lithium battery to
backup the clock and RAM circuits when the AA batteries are removed or are exhausted. This
lithium battery receives its charge from the AA batteries and does not normally require
replacement. Its expected life is at least nine years.

If alkaline batteries are used as the AA batteries, they must be replaced after each patient use.
Nickel cadmium batteries require a full charge before each use.

Setup

AA Batteries

To replace the three AA batteries:

1 Switch the monitor’s power switch to OFF.

2 Remove the battery compartment cover plate by sliding it to the right until it can be pulled free.

3 If present, remove the old AA batteries from the monitor and replace each with a fresh alkaline

battery (or fully charged nickel cadmium), being careful to match polarities where indicated (+
or -).

Note:

The monitor will not operate if batteries are incorrectly installed.
If the monitor is going to be stored longer than two weeks, remove the AA batteries to

prevent the possibility of leakage or discharge. Spacelabs Medical is not responsible
for product damage caused by battery leakage. If your unit has been damaged by a
leaky battery, contact the battery manufacturer for any recoverable repair costs.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

4 After correctly inserting the batteries, gently slide the battery cover back into place.

5 Switch the monitor ON and verify that the display appears. If there is no display, switch the

monitor OFF and refer to in this manual. When power is first switched ON, the first four digits
of the RAM code revision are displayed for about 1 second, followed by a blanked display,
followed by the last two digits of the revision number.

Initializing the Monitor

The ABP monitor must be initialized prior to use. Initialization specifies the monitoring period,
patient information, time format, measurement interval, monitor tone ON/OFF during selected
periods, event code display, and whether or not to display pressure values. To initialize the
monitor, connect it to one of the following analysis systems.

If using 90121 or 92506 products, refer to the appropriate Operations manual for setup and
operation.

Local Report Generator

For a direct connection to a Local Report Generator, place the monitor into the chute on the Report
Generator (Model 90239A or equivalent):

Local Report Generator Direct Connect Configuration

Ensure that the monitor lines up

Model
90217

against the side to align IR ports

Local Report
Generator
(90239A)

PC Interface

For a direct connection to an IBM XT/AT/PS2 (or equivalent) via a Model 90219-02/90219-03
(or equivalent):

1 Connect the ABP monitor to the 90219 Analysis System.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

2 Connect the 90219 Analysis System cable from the monitor to the serial port on the PC.

PC Interface Direct Connect Configuration

Model 90219 Analysis System

90217

cable to serial port

ABP

Monitor

3 Refer to the 90219 Ambulatory Blood Pressure PC Interface/Base Station Operations Manual

(P/N 070-0238-xx) for instructions for operating the Analysis System.

Base Station via Modem

For a modem connection to a remote IBM XT/AT/PS2 (or equivalent) base station:

Modem Connection Configuration

Setup

cable to

TO

BASE

STATION

MODEM

PUBLIC

TELEPHONE

NETWORK

MODEM

serial port

ABP

Monitor

PHONE

Note:

The initialization procedure is provided in the 90219 Ambulatory Blood Pressure PC
Direct/Base Station Operations Manual (P/N 070-0238-xx).

1 The 90217 can use one of the following modems for communication:

• Hayes Smartmodem 1200

• Hayes Optima 9600 or equivalent

• Most 2400 baud modems

If the remote site also has 90202 or 90207 monitors, a Hayes Smartmodem 1200 must be used
with those monitors.

High speed modems are set up via software commands.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

The Hayes Smartmodem 1200, which attaches to the monitor, must be set up as follows:

Switch #

1 down

2up

3 down

4 down

5 down

6up

7up

8 down

9up

10 up

2 Connect the serial port cable (P/N 012-0096-xx) between the monitor and the modem.

Note:

If call waiting or call forwarding are options on the telephone used to transfer data,
ensure that both are deactivated or modem communications may be interrupted. In
addition, telephone systems, such as CBX or PBX, can cause interference with the
modem, or the modem can cause interference with the switching system.

Setting at

Monitor Site

To initialize the monitor for a remote connection:

1 Contact the base station by telephone (for remote operation only).

2 Ask the base station operator to initialize the monitor. Give the following information to the

operator:

• Patient's name.

• Patient ID number.

• If the monitor display is to be active or inactive.

• Time of day (12- or 24-hour format).

• If measurements are to be displayed (systolic/diastolic and heart rate).

• Multiple or single cycle times. If using a single cycle for the 24-hour monitoring period,
indicate the cycle interval and whether the tone is ON or OFF. For multiple cycle time,
specify each cycle interval and whether the tone is ON or OFF for each cycle.

• Any other information the base station operator may request.

3 The base station operator enters the patient information in the computer.

4 Prepare the monitor to receive the patient data from the base station.

• Switch the modem ON.

• When instructed by the base station operator, switch the ABP monitor ON.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Note:

The modem link must be established within 45 seconds for the 90217. If this does not
happen, switch the monitor OFF and return to step 1.

5 When the information transfer is complete, the ABP monitor beeps and voice communication is

restored.

• Switch the monitor OFF and disconnect it from the modem.

• If there is a direct connection between the monitor and the base station, switch the monitor
OFF and disconnect it from the ABP data interface unit.

To transfer readings from the monitor to the base station:

1 Contact the base station by telephone (for remote operation only).

2 Ask the base station operator to read the monitor. Give the following information to the operator:

• Patient's name.

• Patient ID number.

• Any other information that the base station operator may request.

3 The base station operator enters the patient information into the computer. (If the monitor is in

a remote location, the operator must turn power to the base station modem ON.)

4 Prepare the monitor to transfer data to the base station.

• Switch the modem ON.

• When instructed by the base station operator, switch the ABP monitor ON (for remote
operation only).

Setup

Note:

The modem link must be established within 45 seconds for the 90217. If this does not
happen, switch the monitor OFF and return to step 1.

5 When the information transfer is complete, the ABP monitor beeps and voice communication is

restored.

• Switch the monitor OFF and disconnect it from the modem.

Modem Indicator Lights

When the monitor is switched ON, the modem’s RD (receive data) and SD (send data) lights flash
for several seconds. The OH (on hook) indicator is lit when the monitor starts communicating with
the remote modem. When both modems connect, the CD (carrier detect) is lit. The SD and RD
lights flash as data is being transferred.

After the transmission is complete and the monitor is turned OFF, the HS, TR and MR indicators
will always remain lit at the local modem.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

90217 Modem Connection Status Indications

The left-most digit of the 90217 display shows the various stages of the modem connection
process:

1 Sending modem identify query.

2 Waiting for response to identify query.

3 Sending modem reset commands.

4 Sending modem setup commands.

5 Send off-hook command.

6 Waiting for contact.

7 Contact established.

9 Not attempting to contact modem.

Once contact has been established, the second digit from the left on the 90217 display indicates
the baud rate of the connection. On high speed modems, the indicated speed refers to the
connection between the ABP monitor and the modem. The two modems may be communicating at
some speed other than that at which the modem is communicating with the monitor.

The baud rate codes are as follows:

0 1200

1 not used

2 2400

3 4800

4 9600

5 19.2 k

6 38.4 k

Setup Test

Note:

Verify that all cable connections are installed correctly and are connected securely.

Switch the ABP monitor ON. It initially displays 9999. When the monitor is being read or initialized,
these digits change to indicate that communication is taking place between the monitor and the
analysis system. When communication is complete, the digits stop changing.

The right-most digit indicates that a message has been sent from the monitor to the base station.
The second digit from the right indicates that a non-garbled message has been received by the
monitor. A common failure mode is with only the right digit spinning. This indicates garbled
messages are being received and an “I don’t understand” response is being transmitted by the
monitor.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Operational Tests

Conduct the following procedures to verify proper operation of the 90217 ABP Monitor.

Equipment Required

• 90219-02 system

• 90219-03 ABP Base Station software

• Type AA alkaline batteries (3)

• Cable, 90217 to PC, P/N 012-0097-xx (greater than -02)

• Setup for air leaks (refer to Air Leak Test on page 2-8)

• Analog manometer (optional)

• Stop watch or equivalent

• Battery spring insertion tool, P/N 003-0084-00

Setup

Visual Inspection

1 Check the display window and ensure that it is clear (free from scratches, contamination, etc.)

with the words SYS DIA appearing on the left side.

2 Verify that the front panel START/STOP button responds with a clear “snap” when pressed.

3 Inspect inside the battery compartment to ensure that the battery springs are clean and provide

a good electrical contact with the batteries.

4 Install the three AA batteries and verify that the battery door closes and latches properly.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Air Leak Test

1 Connect the test setup illustrated below.

Note:

This figure shows the use of both an analog and digital manometer. Both or either can
be used in these tests. If only one manometer is used, block off the unused hose.

fitting

2 Close the squeeze bulb valve.

3 Turn ON the 90217 and press the START/STOP button.

4 Verify the following monitor response:

• Two beeps are sounded.

• The display counts down: 5555, 4444, 3333, 2222, 1111.

• Pumping begins and “_ _ _ _” is displayed (could display the pump pressure, depending
upon how the monitor was initialized).

5 Verify that the system pumps up to 165 mmHg, ±8 mmHg, before the pressure begins to drop

in 7 to 9 mmHg steps. Ensure that the pressure does not drift down.

Note:

It may take 3 or 4 steps before the cuff size is learned by the monitor and the steps fall
within this range.

6 Verify that the display reads EC18.

7 Open the bulb valve and remove the monitor from the manometer setup.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

PC Interface Test

Note:

The PC Inferface Test is only applicable for use with a PC System that operates with
the 90219 software.

1 Connect the system as illustrated:

2 Power ON all devices.

3 Start the 90219-03 Base Station software (loaded on hard drive).

4 Type: ABP (or ABPPCI) and press the Enter key on the base station.

Note:

If the file name has been changed from ABP, type DIR and press Return to determine
the new name.

5 Switch the 90217 power switch ON.

6 Press (in this order):

Space Bar

1 (ABP communication)

3 (direct connect - skip this step if a PC Interface data key is attached instead of a

base station data key)

Setup

2 (read ABP unit)

7 Press any key (wait).

8 Type 8, press the Enter key, and type Y (yes).

Note:

“8” is the name of a dummy file, which should be setup on the computer already.

9 Press the END key.

10 Verify that the clinical data appears on the computer screen. The last reading on this screen is

the results of the test done earlier in these procedures.

11 Verify that the date and time are correct and that the event code EC18 appears.

12 Press the ESC key.

13 Initialize the 90217 by typing:

1 (initialize ABP)

14 Press the END key and use the up arrow key until PATIENT NAME is selected.

15 Type:

TEST and press the Enter key

1234567890 and press the Enter key

NONE and press the END key

16 Verify that the display reads “***MONITOR INITIALIZED***”.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

17 Press:

Space Bar

ESC key

ESC key

ESC key

Y key (yes)

18 Remove the 90217 from the system and switch power OFF.

19 Remove one AA battery.

20 Wait one minute and reinstall the battery.

21 Switch ON 90217 power and verify that the time remained correct.

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Contents

Pressure Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Oscillometric Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

90217 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Digital Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Software Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Pressure Amplifier

The pressure amplifier monitors the voltage produced across the pressure transducer. This
voltage is proportional to the pressure in the arm cuff.

The pressure transducer circuits require temperature compensation to account for changes in
sensitivity. This is accomplished by using a reference current to provide a constant current source
into the bridge. Any change in bridge resistance due to temperature will change the bridge voltage
in an amount that compensates for any change in sensitivity.

Theory

Voltage across the transducer is amplified differentially and turned into a single ended voltage that
is amplified, offset and sent to the processor’s A/D converter, the oscillometric amplifier and the
overpressure detector.

Offset Adjust

Both transducer offset and operational amplifier offset are nulled out using a pressure offset
adjustment. Minor variations in the offset are tracked and compensated for in software.

Gain Adjust

Changes in gain are compensated for with a gain adjustment. The voltage gain to the A/D
converter is +15 mV/mmHg, and the voltage is offset by approximately 0.09 volts. This 0.09 volts is
inserted to prevent the A/D converter signal from going negative during drifts in the offsets. The

0.09 volt offset is subtracted in software.

3-1

Ambulatory Blood Pressure Monitor 90217 Service Manual

Oscillometric Amplifier

Gain, Offset, and Filtering

The oscillometric amplifier is DC coupled. A D/A converter provides large amounts of DC offset to
the amplifier to prevent the large static pressure component of the waveform from over driving the
amplifier. It provides gain (x64), DC offset, and high frequency filtering (3dB point = approximately
80 Hz). The oscillometric filtering that was present in earlier designs is now done by software.

RAM Protect and Reset Circuit

When the +5 volt power supply begins to drop, the RAM protect circuit asserts a reset signal to the
processor that protects RAM data during power collapse. This same circuit provides a start up
processor reset signal at power up. Reset time is a product of the reset R-C time constant and the
hold off time necessary for the power converter to reach +5 volts (the reset time constant is 350
msec).

A/D Voltage References

The A/D reference (+ADR) is generated from a LM4041-1.2 band gap reference. Its reference
output of 1.2 volts is amplified to 4.608 volts by a gain adjustable amplifier (+ADR = +4.608 volts,
adjustable).

30 Second Pulse

The real-time clock produces a pulse every minute with a 30 second duration. This pulse’s leading
and trailing edges are conditioned into separate pulses and applied through a diode to the
processor’s WAKE_UP line to awaken it every 30 seconds.

Second Pulse

The SECONDS line goes to the LCD where it blinks the colon and changes the LCD polarity.

Cable Connected

If a cable is connected to the RS-232 communications connector with the power switch ON, the
power converter activates and awakens the processor. A cable connected condition prevents the
power converter from going down as a result of a shutdown fault generated by the watch dog
timer, but cannot prevent an over-pressure shutdown. Once a cable has been connected, the
processor goes into a listening mode, awaiting instructions from the RS-232 port.

These instructions adhere to the ABP communications protocol.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Watch Dog Timers

The watch dog timers ensure that the cuff cannot remain inflated because of a software crash.
There are two watch dog timers in the Model 90217: one resides inside the processor; the other
inside the real-time clock. Each counts 180 seconds before timing out. Both timers start at
converter power up.

The real-time clock watch dog timer triggers the hold off that disables the pump, opens the bleed
valve, and informs the CPU of its action. In 16 seconds after the hold off is asserted (if the software
does not end the reading) fault shutdown resets the system. The hold off is also asserted at the
end of every reading. The hold off always stays active for 32 seconds or until a manual reading is
started.

Fault Shutdown

The fault shutdown circuitry resets the system because of two conditions:

• There is an over-pressure condition not detected by software.

• Pressure reading takes longer than 180 seconds (this indicates a software crash since a
software time out should have already stopped the reading).

Over-Pressure Detector

In addition to software over-pressure detection, there is also a hardware over-pressure detector
that activates at approximately <295 mmHg. A one-half second delay in initiating an over-pressure
response prevents motion artifacts from causing a false over-pressure detection.

Theory

3-3

Ambulatory Blood Pressure Monitor 90217 Service Manual

90217 Block Diagram

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Digital Circuitry

Display Board

Information is sent from the processor to the LCD controller via a serial bus (CBUS). The LCD
controller activates the necessary segments to display information on the 4-segment LCD. Each of
the segments can be controlled separately. The processor determines which segments must be
turned ON and sends this information to the controller.

An exclusive OR gate blinks the colons once per second when in the clock mode and also
changes drive polarity.

Real-Time Clock

The real-time clock sends and receives data via a bidirectional serial bus that goes to the
processor. The clock is backed up by the 3-volt lithium cell when the main batteries are removed.
The clock uses an adjustable 32 KHz crystal.

Theory

RAM

A 128 KB x 8 RAM stores patient collected information, programmed information, and RAM code
software execution. RAM is backed up by the 3-volt lithium cell during main battery removal.

Addressing and Control

Addressing and control are accomplished using a combination of processor ports, latches, and
gates.

Communications RS-232 Connector

The communications connector is a modified RS-232 interface. When the communications cable
(IR cable) is connected to the back of the unit, a reed relay activates the monitor if the power
switch is turned ON.

At this point, the processor checks and determines that the C_CON cable connected line is
asserted and goes into the communication mode. The processor determines whether the cable is
communicating with a modem or a report generator and responds accordingly.

Communications are done using two lines: transmit and receive. Data is converted into IR signals
in the cable and ABP monitor.

Processor

The processor type is an 80C198 with a 7.37 MHz crystal. It contains on-board RAM, ROM, A/D
converter, data ports, addressing control, serial bus lines, and modulator ports that control motor
speed and speaker outputs.

The on-board ROM contains routines for communication and start up. The majority of the ABP
monitor’s program is loaded into RAM using the infrared RS-232 port.

3-5

Unit Power

All power for the 90217 ABP Monitor comes from the main batteries (3 AA cells) and the
rechargeable 3-volt lithium battery.

Unregulated Power Supplies

+VSW

The switched battery voltage (+VSW) is provided by the main batteries via the unit power switch.
With this switch ON, +VSW is applied to the power converter, the air pump, and to the various
circuits, which must remain active during the processor idle down mode.

+VBB

The backup battery supply (+VBB) is always a diode drop (0.3 volts) down from the main battery
voltage (+VSW), the +5, or the lithium battery voltage, whichever is the highest.

• If the power switch is OFF and there are charged main batteries in the unit, the main batteries
supply the voltage through a diode (+VBB will be approximately 3.3 to 4.5 V).

• If the power switch is ON and the +5 V supply is higher than +VSW, the power comes from the
+5 V supply through a diode (+VBB is approximately 4.6 to 4.8 V).

• If the main batteries are removed, the voltage is developed from the lithium backup battery
through a diode (+VBB is approximately 3 V).

Ambulatory Blood Pressure Monitor 90217 Service Manual

Power Converter

The power converter is a MAXIM “MAX655” step-up converter. It develops the +5 V supply from
the main battery voltage, which ranges from 2.5 to 4.8 VDC.

Low and High Current Modes

When the power converter is in its low current mode, it draws 40 µamps of quiescent current.

The power converter goes into a high current mode upon receiving an interrupt from any of its
three wake-up sources: cable connect, clock, or START/STOP button. A 5 msec delay following a
wake-up signal keeps the power converter in high current mode while the processor wakes up and
asserts the PWR_HI line.

The power converter develops the +5 V supply, the +5 VA supply, and the converter reference
voltage, ONNV_VREF.

+5 V Supply

The +5 V supply is developed directly from the +VSW (main batteries and is regulated to +4.75 to
+5.25 volts). The maximum current available is 60 ma (typical draw is approximately 20 ma).

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Ambulatory Blood Pressure Monitor 90217 Service Manual

+5 VA Supply

+5 VA is a secondary power source for the analog circuitry. It can be disconnected to reduce
power consumption when the analog circuits are not being used by asserting the PWR_DWN line.

CONV_VREF

The converter reference (CONV_VREF) is created by a band gap reference (about 1.25 volts) to
produce +5 volts (adjusted to + 5 volts) at the +5 VA supply.

Backup Battery Circuit

A 3-volt rechargeable lithium cell provides backup power to the clock and RAM circuits when the
main batteries are removed or exhausted. This lithium battery receives its charge from the three
AA batteries and has a 20 - 35 ma/hrs capacity with sufficient charge to last approximately
4 months without the main batteries installed.

Main Battery

The main battery voltage is monitored by reading the BAT VOLTS line with the A/D converter. The
voltage at this point is a divided down sample of the +VSW voltage.

Wake-up Interrupt

Theory

The power converter is activated when one of its three wake-up sources generate an interrupt and
trips the 5 msec one-shot. The microprocessor must assert the PWR_HI line during this 5 msec
period to place the power converter in its high power mode.

Three sources can place the power converter into high power mode:

• An RS-232 serial cable is connected

This cable connect is detected when the reed switch is activated by an external magnet. When
the reed switch closes, it causes an interrupt to the processor on the WAKE_UP line.

• A clock wake-up

The real-time clock produces an output that changes state every 30 seconds. These
transitional states are shaped into pulses that create interrupts to the processor.

• The START/STOP button is pressed

When the START/STOP button is pressed, the WAKE_UP line is asserted.

Once an interrupt request has gone to the processor by asserting the WAKE_UP line, the
processor looks to see which of the three sources asserted the WAKE_UP line.

Power Switch

When the power switch is ON (closed), the +VSW supply comes up and provides power to all the
circuitry in the ABP unit. The +VBB supply receives power directly from the main batteries to
ensure that the lithium battery will not be drained when main batteries are available.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Software Flow Chart

3-8

Contents

Periodic maintenance consists of cleaning the unit, replacing or recharging the batteries, testing
the unit for accurate operation, and calibrating when necessary.

Cleaning

Use a soft, damp cloth and mild detergent mixed with water to wipe the exterior of the monitor.
Clean the carrying pouch and air hose with isopropyl alcohol.

Maintenance

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Calibration Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operational Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Manifold Kit - P/N 050-0110-xx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Disassembly Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

The cuff wrap may be sterilized only with ethylene oxide (ETO) sterilization methods using
standard hospital procedures. Use standard aeration techniques after sterilization. Small soiled or
stained areas may be cleaned by gentle scrubbing with a sponge or cloth soaked in a mild soap
and water solution.

The cuff wrap with the air bladder removed is machine washable on “delicate” cycle only. Do not
wash with bed linens, gowns, or in large commercial-type washers.

To remove the bladder for cleaning, refer to the figures below and follow these steps:

1 Using your fingers only, fold or roll up the bladder inside the cuff. Do not use pencils, pens, or

other hard objects as damage to the bladder could easily occur.

2 Remove the bladder through the hose exit opening. Once the bladder has been removed, be

sure to attach the hook and loop surfaces on the cuff before washing.

3 After washing and drying the cuff, reinstall the bladder in the reverse o rder of its removal. Make

certain that all folds in the bladder are removed prior to inserting it back inside the cuff.

Note:

The bladder may be installed with the hose exiting the second cuff opening. However,
the bladder must be positioned with its long side toward the center of the cuff.

4-1

Ambulatory Blood Pressure Monitor 90217 Service Manual

Air Bladder Removal

Air Bladder Reinstallation

4-2

Ambulatory Blood Pressure Monitor 90217 Service Manual

Calibration Check

To verify calibration of the 90217 ABP Monitor:

1 Obtain a full-size mercury sphygmomanometer (manometer) or aneroid gauge.

2 Disconnect the cuff hose from the monitor.

3 Connect the T-tube splitter to the monitor pneumatic connector and the sphygmomanometer.

4 Wrap the pressure cuff around the rigid cylinder, and fasten the cuff. Connect the cuff hose to

the remaining connection on the T-tube splitter. Refer to Figure 4-1 for the test setup.

Maintenance

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5 Press the START/STOP button on the front of the monitor. After the pump has stopped, the

monitor display should read approximately 165 mmHg (only if the START/STOP button has
been operated since the last measurement; otherwise it should read 35 mmHg above the
average of the last five readings). Compare the readings on the monitor and the manometer
while the pressure bleeds down. The monitor reading should be within three millimeters of the
manometer reading or 2% of the reading, whichever is greater (± the accuracy of the
manometer). At the end of this procedure, the monitor will display an event code.

6 Disconnect the T-tube splitter from the monitor. Disconnect the air hose and

sphygmomanometer from the T-tube. Re-connect the cuff to the monitor.

Calibration Procedures

The following procedures allow field testing and calibration of the Model 90217 ABP Monitor.

Equipment Required

• Computer system, 90219-02 compatible with appropriate software

• DC voltmeter, 4.5 digits, Fluke 8060A or equivalent

• Diskette, 90217, Production Test Aids (P/N 063-0609-xx)

• Diskette, 90217 RAM code, current version

• AA type batteries, 3 ea.

• Cable, IR communications, 90217/90207 (P/N 012-0097-02 or later)

• Calibration test setup (refer to page 4-7)

• Screwdriver, 0.05-inch flat blade, insulated handle

• Screwdriver, Phillips, #0 tip

• Screwdriver, Phillips, #1 tip

• Hemostats

• Magnet

4-4

Ambulatory Blood Pressure Monitor 90217 Service Manual

Preparation

• Carefully read through these procedures

• Connect the communications cable to the IR port on the 90217

• Load the Production Test Aids software (Xmain.exe) onto the hard disk of the computer
system

• Copy the 90217 RAM code into same directory as Xmain.exe program (Production Test Aids
software)

• Ensure that charged batteries (3) are installed into the 90217 monitor

Note:

A voltimeter may be used to check battery condition.

NiCad: 1.30 V = full charge (> 1.25 V minimum)

Alkaline: 1.56 V = full charge (> 1.50 V minimum)

Pre-calibration Checks

1 Remove the back cover on the 90217 monitor.

2 Measure the +4.608 volt reference (TP7) on the Main Board.

a Place a magnet near the IR port on the monitor (or connect the IR cable to the port).

b Switch ON the monitor power.

c Connect a DC voltmeter positive lead to TP7 (+4.608) and the negative lead to TP9

(ground). Refer to the following figures for test point locations.

Maintenance

4-5

Ambulatory Blood Pressure Monitor 90217 Service Manual

TP9 TP8

TP7

TP6

R42

R49

R22

d Verify that TP7 is between +4.605 and +4.611 volts. If not, readjust R22 to obtain

+4.608 ±0.002 V.

3 Measure the +5 V supply (TP6) on the Main Board.

a Connect a DC voltmeter with the positive test lead on TP6 (+5 volts) and the negative on

TP9 (ground).

b Verify that TP6 measures between +5.05 and +4.95 volts. If not, adjust R78 on the power

board until TP6 measures +5.0 ±0.01 volts.

4 Replace the back cover of the 90217 case (removed in step 1).

4-6

Ambulatory Blood Pressure Monitor 90217 Service Manual

Calibration Setup

1 Verify that the IR cable is connected to the serial port on the computer system and to the IR port

on the back of the 90217 (when communicating correctly, the monitor will display 9999 and
occasionally 2999).

2 Start the “X” program by changing to the subdirectory where the file XMAIN.exe is located and

typing: X and pressing the Enter key.

3 When the computer establishes contact with the monitor, the Test Utility Main Menu appears:

1. SYSTEM CONFIGURATION

2. MAKE CONTACT WITH MONITOR.

ENTER SELECTION__

From this menu, select MAKE CONTACT WITH MONITOR by typing the item number
appearing to the left of this menu item (2) and pressing Enter.

Verify that the screen clears and momentarily displays SPEED 4 IS ENGAGED (and other
miscellaneous information). If the RAM code is corrupted, the program downloads code.

4 At the conclusion of the above process, the Manufacturing Test Utility Main Menu reappears

with additional menu items and the monitor’s RAM and ROM code version numbers:

Maintenance

1. SYSTEM CONFIGURATION

2. INITIALIZE MONITOR.

3. DOWNLOAD 90217 RAM CODE.

4. EXHAUSTIVE MEMORY TEST.

5. SET 90217 GAIN AND OFFSET.

7. SPEAKER TEST.

8. PUMP TEST.

9. HARDWARE OVERPRESSURE TEST.

10. COMMUNICATIONS TEST.

11. MANOMETER MODE.

12. RESET FOR ANOTHER MONITOR.

ENTER SELECTION __

ROM ID = 90217 V 03.02.xx
RAM ID = 90217 V 03.02-xx

5 Select 2. INITIALIZE MONITOR.

6 Verify that the screen displays ABP RESET SUCCESSFUL and CLOCK SUCCESSFULLY

SET and that the Main Menu screen again appears.

4-7

Ambulatory Blood Pressure Monitor 90217 Service Manual

Pressure Offset and Gain Adjustment

1 Adjust the pressure offset:

a From the Main Menu, select 5. SET 90217 GAIN AND OFFSET.

b Verify that the following screen appears:

90217 GAIN AND OFFSET ADJUSTMENT

1. Adjust offset pot for 00 with hose disconnected.

2. Adjust gain to match manometer at about 200 mmHg.

3. Due to interaction, repeat 1 and 2 as needed.

0.1 mmHg 20 counts

c Verify that the mmHg value appearing at the bottom of the screen reads 0.0 ±0.3. If not,

readjust R49 (pressure offset adjustment) until the mmHg value at the bottom of the screen
reads 0.0 ±0.1.

2 Adjust the pressure gain:

a Connect the sphygmomanometer test configuration to the 90217 monitor:

b Manually pump system pressure to 195 mmHg.

c Verify that the mmHg value appearing at the bottom of the screen reads 195 ±1.0. If not,

adjust R42 (pressure gain adjustment) until the mmHg value reads 195.

3 Repeat the offset and gain adjustments until no further adjustments are required to produce the

correct values.

4-8

Ambulatory Blood Pressure Monitor 90217 Service Manual

Pressure Leakage

1 In the sphygmomanometer test configuration, use a hemostat to clamp the hose going to the

90217 and pump the pressure to 280 mmHg ±4.

2 Clamp the hose going to the squeeze bulb with a hemostat and measure the leakage rate

(system leakage).

3 Unclamp the hoses going to the 90217 and squeeze bulb.

4 Repump the system to 280 mmHg, reclamp the hose to the bulb and measure the leakage rate

(90217 + system leakage).

5 Subtract the first leakage rate (system leakage) from the second leakage rate (90217 + system

leakage).

6 Verify that the pressure drop due to 90217 leakage is <6 mmHg per minute, or <4 mmHg per

4 minutes for 90217-41 (Japan) and <4 mmHg per 2 minutes for 90217-32 units (German).

7 Release the system pressure.

Over-Pressure Checks

1 Press the Esc key (the Main Menu should return).

2 From the Main Menu, select 9. HARDWARE OVERPRESSURE TEST.

Maintenance

3 Verify that the pump starts and continues to run, building pressure until the hardware over-

pressure limit is achieved. Verify that the pressure value appearing at the bottom of the screen
falls between 285 and 295 mmHg.

4 Press the Esc key.

Over-Pressure Relief Valve Check

1 Power OFF the 90217.

2 Disable the hardware over-pressure circuit by connecting TP8 (over-pressure test point) to TP9

(ground) using a small patch cable.

3 Power ON the 90217.

4 From the initial menu, select 2. MAKE CONTACT WITH MONITOR.

5 When the Main Menu appears, select 9. HARDWARE OVERPRESSURE TEST.

6 The pressure will increase until it opens the over-pressure relief valve. When the pressure

increase levels off at a rate of 3 sec/mmHg, check the pressure displayed on the manometer
and verify that it falls between 300 and 325 mmHg.

7 Remove the jumper between TP8 and TP9.

8 Power OFF the 90217.

9 Press the Esc key.

10 Power ON the 90217.

4-9

Ambulatory Blood Pressure Monitor 90217 Service Manual

Hardware Safety Timers Check

1 From the Main Menu, select 2. MAKE CONTACT WITH MONITOR.

2 When the Main Menu appears, select 11. MANOMETER MODE.

3 Manually pump up the system pressure to 165 mmHg ±10.

4 Remove the IR cable and start the timer.

5 Exit the X program and return to DOS by pressing Esc two times.

6 When the valve opens (pressure decreases rapidly), verify that the elapsed time is between 178

and 182 seconds (fault holdoff timer).

7 When the 90217 display changes from showing pressure to showing the software version,

verify that the elapsed time falls between 194 and 198 seconds (watch dog timer).

8 Remove the test setup and restore any 90217 screws previously removed.

Operational Verification

These procedures verify that the 90217 ABP monitor’s blood pressure readings are consistent with
design standards.

Note:

These procedures use the DynaTech Nevada CuffLink Blood Pressure Simulator. If
you are using a different simulator, refer to its operator’s manual and determine
equivalent tests. Refer to the end of this Maintenance chapter for instructions on using
the CuffLink simulator in the automatic or the manual mode.

Equipment Required

• DynaTech Nevada CuffLink Noninvasive Blood Pressure Analyzer (and equivalent) and
associated tubing, manuals, fittings (software version 2.0 or higher is required)

• 1/8 inch I. D. tubing (P/N 162-0019-00 or equivalent)

• Adult cuff (P/N 016-0264-00 or equivalent)

• Luer connector (P/N 103-0008-00)

Blood Pressure Simulator Preparation

1 Turn ON the CuffLink simulator and allow it to warm up for a minimum of 15 minutes.

2 Verify that the calibration sticker is current. If it is not, the simulator will need to be calibrated by

the manufacturer or its authorized service facility.

3 Check the zero pressure by selecting ADAMS Adult from SelectBp in the Main Menu.

4 Press ENT.

5 Press F5 to zero the pressure.

6 Press Esc to return to the Main Menu.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

7 Perform a leak rate check on the blood pressure simulator and associated tubing as follows:

a While in the Main Menu, move the cursor to Press and select Leak Test by pressing ENT.

b Connect a squeeze bulb to the hose, which will connect directly to the unit under test.

c Pump up the system pressure to approximately 170 mmHg.

d Wait 10 seconds for the pressure to stabilize.

e Press the START (F1) key on the CuffLink simulator and wait one minute while the leak

rate is measured.

f At the end of the minute, the leak rate will appear on the CuffLink display.

g If the leak rate is greater than 10 mmHg/min, retighten all external hose connections and

repeat the test. If the system continues to fail, isolate each length of tubing to locate and
repair the source of the leak.

h Press the Esc key to return to the Main Menu.

90217 Test Preparation

1 Set up the ABP monitor by connecting it to the CuffLink.

2 Refer to the table below for a list of systolic/diastolic/heart rate settings to be performed on the

90217 monitor:

Pressure Setting Range

Systolic 60 52 to 60

Diastolic 30 26 to 33

Heart Rate 40

Maintenance

Systolic 100 91 to 103

Diastolic 65 60 to 70

Heart Rate 60

Systolic 120 111 to 124

Diastolic 80 74 to 88

Heart Rate 80

Systolic 150 143 to 161

Diastolic 100 92 to 108

Heart Rate 120

Systolic 200 196 to 218

Diastolic 150 142 to 158

Heart Rate 120

Systolic 255 253 to 277

Diastolic 195 185 to 205

Heart Rate 120

4-11

Ambulatory Blood Pressure Monitor 90217 Service Manual

3 Connect the 90217 to the simulator:

4 Move the CuffLink cursor to SelectBp and press the ENT key to select ADAMS Adult.

5 Press the F2 key (AdjEnv) and verify that the gain is at 100%. If it is not, adjust it us i n g the arrow

keys. At the same time, verify that OFFSET and/or SHIFT are at 0.

6 Press the ENT key.

7 Press the Esc key to return to the Main Menu.

8 Move the cursor to AUTO using the arrow keys and select Execute using the ENT key.

9 Press the F1 key to select ADULT readings.

10 Zero the pressure by pressing the F5 key.

11 Press the Esc key until the first pressure simulation reading is displayed on the CuffLink.

12 Press the START/STOP button on the ABP monitor to start the reading.

Note:

The CuffLink simulator may automatically change to the next blood pressure setting
when the current reading is complete. If you must repeat a reading, press the Esc key
repeatedly until the ADULT INFANT menu is shown at the bottom of the screen. Press
the F1 key to select ADULT readings and then use the Esc key to increment to the
reading desired.

13 Repeatedly press the START/STOP button on the 90217 to sequence through the list of blood

pressures simulated by the CuffLink.

14 At the end of the readings, verify that the systolic and diastolic readings are within given ranges

provided in step #2.

Note:

If the readings are out of range, retest the ABP monitor at the same setting. If it still
fails, check all hose connections, perform the leak test as described in the beginning
of these procedures, and check the gain settings on the simulator. If all this fails, refer
to Troubleshooting on page 5-1.

4-12

Ambulatory Blood Pressure Monitor 90217 Service Manual

CuffLink Manual Operation

The following steps outline the manual selection of simulated blood pressures and heart rates.
These may be used to repeat a reading which was out of range or produced no reading.

1 When the CuffLink is warmed up, move the cursor to the SelectBp option of the Main Menu

and ADAMS Adult. Press the ENT key to make a selection.

2 Press the F2 key and verify that the gain is set to 100%. At the same time, verify that the SHIFT

and/or OFFSET are at 0. Press the ENT key.

3 Press the F1 key to move to the Heart Rate menu. Use the arrow keys to move the cursor to

the desired heart rate. Press the ENT key to make a selection.

4 Use the arrow keys to move the cursor to the desired blood pressure and press the ENT key.

5 The CuffLink is ready to simulate the selected heart rate and pressure. Press the START/STOP

button on the monitor to begin.

CuffLink Automatic Operation

Use the following procedure to set or change the automatic sequences stored in the CuffLink:

1 Move the cursor to the Auto option of the Main Menu and select Utility by pressing the ENT

key.

2 Use the arrow keys to move the cursor to the EDIT box. Select sequences to edit and press the

appropriate button (F1, F2, F3, etc.). F1 is assigned to ADULT. In the first screen, answer YES
to the Pop-OFF test and NO for the rest. The second and third screens list the sequence of
blood pressures and heart rates. Use the arrow keys to move around the list and use the F4
and F5 keys to change the settings. Set CYCLES for each blood pressure reading. When
finished making changes, press F3 (STORE) to end the edit session.

Maintenance

3 Use the arrow keys to move the cursor to the NAME box. Select the sequence to be named

and press the appropriate button (F1, F2, F3, etc.). Use the arrow keys to move to each
character and use the UP and DOWN arrow keys to change the character. When complete,
press ENT to end the edit.

4-13

Ambulatory Blood Pressure Monitor 90217 Service Manual

Manifold Kit - P/N 050-0110-xx

Note:

• Manifold kit (P/N 050-0110-00) is used for equipment that has a luer lock

connector.

• Manifold kit (P/N 050-0110-01) is used for equipment with a quick-disconnect

connector.

To replace the manifold in the 90217 monitor:

1 Disassemble the 90217 ABP Monitor and remove the 672-0171-xx assembly. Separate the

manifold from the rest of the assembly by cutting through the 176-0279-00 four-conductor
flexstrip cable. Refer to Disassembly Procedures on page 4-15.

2 Unsolder the remaining section of flexstrip from the 672-0171-xx assembly and clear the holes

of solder.

3 From the back (non-display) side of the display board, insert the leads from the new flexstrip.

They are pre-attached to the manifold and should fit into the cleared holes in the old assembly.
Do not bend or stress the new flexstrip any more than necessary during replacement.

4 Ensure that the flexstrip is squarely aligned with the display board and fully seated. Solder the

four leads in place and trim excess lead length.

5 Install the 672-0171-xx assembly back into the case.

6 Perform a full monitor calibration. Refer to Calibration Procedures on page 4-4.

7 Reassemble the 90217 monitor.

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Disassembly Procedures

Caution Observe precautions for handling electrostatic-sensitive devices!

Note:

• Never touch electrostatic-sensitive electronic components without following proper

antistatic procedures, including the use of an ESD wrist band and mat. An
electrostatic discharge from your fingers can permanently damage electronic
components.

• All static-sensitive electronic components are packaged in static-shielding bags.

Retain this bag for repackaging the component should you need to store it or
return it to Spacelabs Medical for any reason.

To open the monitor and access its internal components:

1 Remove the Communications label from the back of the unit (refer to Parts on page 6-1 of this

manual for replacement part number) and remove the two screws that are exposed (see
below).

2 Remove the identify label on top of the unit (see illustration below) and remove the two exposed

screws to separate the top and bottom case pieces.

Maintenance

To separate the ECB assembly from the bottom case half:

1 Remove the front panel label from the unit (refer to Parts on page 6-1 of this manual for

replacement part number) and expose the two screws holding the ECB assembly.

2 Remove these two screws (see previous illustration) and separate the ECB assembly from the

lower half of the case.

4-15

Contents

Monitor Event Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Base Station Report Event Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Problem Solving Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

If monitor problems develop, use the information provided in this chapter as a problem solving
guide.

Monitor Event Codes

The 90217 ABP Monitor displays a two-digit event code whenever it is unable to successfully
complete a blood pressure measurement. This event code appears as the last digits on the
monitor display and is preceded by the letters EC (for example, in the displayed event code EC01,
01 is the event code).

Troubleshooting

The following list contains a brief description of event codes, which can appear:

EC03 Patient cancel.

EC04 Out of time for measurement. NO time to collect additional data but enough time to

evaluate data already collected. Evaluation did not produce a valid reading.

EC05 Individual result corrupted.

EC10 Hung 20 seconds at a bleed step.

EC11 Did not pump high enough. Failed to inflate cuff above systole.

EC13 Reset of Office Check mode.

EC15 Bad checksum in ROM.

EC16 Low battery detected before cuff measurement.

EC18 Too few entries in table to perform analysis.

EC20 Pulse pressure too small. Diastole is greater than historical diastole +20 and there

are large oscillometric entries at cuff pressures below diastole which indicate that
diastole might be lower.

EC25 Bad checksum in RAM containing code. Initialize monitor to download correct code.

EC28 Diastole greater than 200 mmHg.

EC30 Software could not track changes in oscillometric activity.

EC32 Software overpressure.

EC38 Pulse pressure equals 16 mmHg or less.

EC39 Oscillometric (input) queue overflow.

EC40 No non-discarded entries at lower cuff pressures but within 16 mmHg of systole.

EC42 No cuff attached.

EC45 Illegal bleed size. Not between 4 and 8 mm.

5-1

Ambulatory Blood Pressure Monitor 90217 Service Manual

EC48 Pulse pressure is less than historical pulse pressure minus 20 and many pulses

failed either screen or failed match.

EC50 No non-discarded entries at higher cuff pressures but within 16 mmHg of diastole.

EC52 Kinked hose.

EC55 Unexpected loss of power. User may have turned power switch OFF during a

reading.

EC58 Diastole is less than historical diastole minus 15 and many pulses failed either

screen or failed match.

EC62 Loose cuff. Reached 25 mmHg but not target pressure. Cuff may not be attached.

EC69 Too few entries to calculate heart rate.

EC70 Excessive motion at highest cuff pressures.

EC79 Partially clogged bleed line. All blood pressure attempts are inhibited. Attempts can

be enabled by turning power switch OFF then ON again.

EC80 Pulse pressure too small. Many pulses failed either the screening or the matching

criteria and one of the following: (a) there is an oscillometric entry at a cuff pressure
higher than systole whose amplitude is above the level defining systole, suggesting
that systole might be higher; (b) there is an oscillometric entry at cuff pressure below
diastole whose amplitude is above the level defining diastole, suggesting that
diastole might be lower.

EC85 Bad clock.

EC90 Excessive motion throughout the measurement. Three out of five entries were

rejected.

EC95 Cuff pressure baseline out of bounds. Initializing the monitor resets the cuff

pressure.

EC99 Unexpected or Contradictory Data.

The following codes may also appear on the monitor display:

LLL Main batteries (3 AA cells) are low and do not have sufficient power to operate the

pump and complete a measurement. No retry attempt is made following an LLL
message.

FULL The monitor contains 240 readings and cannot store any more.

5-2

Ambulatory Blood Pressure Monitor 90217 Service Manual

Base Station Report Event Codes

The following list contains the extended event codes, which may appear in a blood pressure
report. The extended event code digit appears in the first (tens) digit position (for example, 11).
The list is grouped according to the monitor event code (if applicable), which would be displayed at
the time of the event. The codes are printed as a numeric value in the systolic column with all other
columns printing zero.

Monitor displays -- EC00

Base Station report prints:

10 Measurement aborted as the result of excess movement artifact. Frequent “10”

messages may indicate an air leak.

20 A) A very large number of movement artifacts.

B) Heart rate arrhythmia.

30 A) Movement artifact at mean arterial pressure.

B) Heart rate arrhythmia.

40 A) Movement artifact at systole.

B) Heart rate arrhythmia.

Troubleshooting

50 A) Movement artifact at diastole.

B) Heart rate arrhythmia.

Monitor displays -- EC01

Base Station report prints:

11 Did not pump above the mean arterial pressure.

21 Did not pump above the systolic pressure.

Monitor displays -- EC02

Base station report prints:

12 Did not reach initial cuff pressure. The cuff may have been improperly applied or

there may be an air leak.

22 Overpressure.

32 Overpressure.

42 No cuff attached.

52 Kinked hose.

62 Cuff applied too loosely.

72 Kinked hose.

82 Kinked hose.

Monitor displays -- EC03

Base station report prints:

03 Patient canceled measurement by pressing monitor’s START/STOP button.

5-3

Ambulatory Blood Pressure Monitor 90217 Service Manual

Monitor displays -- EC04

Base Station report prints:

04 Measurement not completed within 110 seconds. Occasional EC04 messages may

result from excessive patient movement. Frequent EC04 messages would either
indicate an improperly placed cuff or a monitor malfunction, which requires service.

Monitor displays -- EC05

Base Station report prints:

15 Equipment malfunction. Return it to Spacelabs Medical for service.

25 Unit failed to initialize. Please re-initialize.

35 At least one of the blood pressure or time readings obtained before the event code

is erroneous. Interpret all readings with caution.

55 A) Measurement aborted because cuff pressure was too high.

B) Measurement aborted because measurement has taken longer than two minutes
to complete.

65 Equipment malfunction. Return unit for service.

75 Equipment malfunction. Return unit for service.

85 Equipment malfunction. Return unit for service.

95 Cuff pressure baseline out of bounds.

Monitor displays -- LLL

Base Station report prints:

16 Low battery prior to start of measurement.

26 Low main battery after measurement started.

Monitor displays -- EC08

Base Station report prints:

18 Too few data entries to accurately determine blood pressure.

28 Diastole above 200 mmHg.

38 Pulse pressure less than 16 mmHg.

Monitor displays -- EC09

Base Station report prints:

19 Hardware fault (valve open with pump turned ON).

29 Diastolic pressure value cannot be obtained from the data available.

39 Systolic pressure value cannot be obtained from the data available.

49 Mean arterial pressure value cannot be obtained from the data available.

59 Heart rate value cannot be obtained from the data available.

69 Heart rate value cannot be obtained from the data available.

5-4

Ambulatory Blood Pressure Monitor 90217 Service Manual

Problem Solving Checklist

Use this table to diagnose a monitor problem:

Problem Possible Cause Solution

Troubleshooting

Modem indicators are
incorrect.

Monitor display is incorrect. No data was transferred.

Only the last digit to the right
changes when attempting to
communicate.

Monitor displays “LLL” and
alarm sounds.

Cuff is too tight.

Cuff is too loose when inflated.

Modem switch settings are
incorrect.

Data being received fails the CRC
test and is declared corrupt.

Data is not retained. Replace backup battery.

Power is low or not there.

Can be one of the following: time­out, no reading due to air leak in the
system, improper cuff size, or cuff
not properly attached to the monitor.

If using a modem, phone line is bad.

If using a modem, phone system is
incorrectly configured.

Main battery is low.

Cuff placed on the patient too
tightly.

The air pump stayed ON too long.

Cuff is placed on the patient too
loosely.

Air pump is not staying ON long
enough.

Check modem cable for tight
connection.

Check communications cable
for tight connections. If it is
loose and a bright external light
is present, the light may be
corrupting the data.

Check the batteries for correct
polarity and a full charge. If
needed, replace or recharge
the batteries.

Isolate cause and correct.

Have phone company check
out line.

Verify modem configuration
with the phone company and
with Spacelabs Medical
Technical Support.

Turn OFF monitor immediately.
Replace batteries to continue
monitoring.

Reposition the cuff.

Return the unit to Spacelabs
Medical for service.

Reposition the cuff.

Return the unit to Spacelabs
Medical for service.

5-5

Contents

90217 Field Replaceable Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

90217 Field Replaceable Parts Lists

Assemblies

Description Part Number

Manifold Assembly . . . . . . . . . . . . . . . . . . . . . . . . .650-0399-xx

ECB PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .672-0171-xx

Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .119-0060-xx

Parts

Accessories

Carrying Pouch 016-0340-xx

Strap 016-0262-xx

Belt 016-0080-xx

Calibration Kit 016-0040-xx

Garment Clip 344-0008-00A

Battery Set (3 AA alkaline cells) 146-5011-xx

Patient Diary 000-0027-xx

Operations Manual 070-0137-xx

Manifold Kit (for units with Luer-Lock connectors) 050-0110-00

Manifold Kit (for units with Quick-disconnect connectors) 050-0110-01

Table 1: Standard Accessories

Description Part Number

6-1

Ambulatory Blood Pressure Monitor 90217 Service Manual

Table 2: Cuff Accessories

Description

Pediatric Cuff 12 to 20 cm 015-0118-01Q 015-0118-01

Adult Cuff 17 to 26 cm 015-0067-01Q 015-0067-01

Adult Cuff 24 to 32 cm 015-0068-02Q 015-0068-02

Large Adult Cuff 32 to 42 cm 016-0077-01Q 016-0077-01

Extra-large Adult Cuff 38 to 50 cm 016-0109-01Q 016-0109-01

Cuff Support Harness 015-0070-xx

Service Manual 070-0502-xx

Quick-disconnect Coupling (to convert Luer cuffs to Quick-disconnect) 712-0794-00

Male Quick-disconnect to Luer Adapter
(to adapt Luer monitor to Quick-disconnect cuff)

Limb

Circumference

Table 3: Optional Accessories

Accessories Part Number

Part Number

Quick-Disconnect

Part Number

Luer-Lock

712-0773-00

Labels

Description Part Number

Domestic

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-0828-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-0829-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

International English

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-0828-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-0829-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

French

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-1112-00

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Ambulatory Blood Pressure Monitor 90217 Service Manual

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-1107-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

German

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-1111-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-1106-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

Spanish

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications . . . . . . . . . . . . . . . . . . . . .334-1109-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-1104-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

Italian

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-1110-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-1105-00

Parts

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

Japan

Label, Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 334-1098-00

Label, Communications. . . . . . . . . . . . . . . . . . . . . .334-0828-00

Label, Operating Instructions . . . . . . . . . . . . . . . . . 334-0829-00

Label, ID, Serial Number . . . . . . . . . . . . . . . . . . . . .334-0922-00

Service Kits

Manifold Kit, (for non-Q Option) . . . . . . . . . . . . . . . 050-0110-00

Manifold Kit, (for Q-Option) . . . . . . . . . . . . . . . . . . .050-0110-01

Drawings

Title Part Number Drawing # # of Pages

90217 Assembly 650-0398-00

90217 ECB Assembly 672-0171-01 2 1

1 2

6-3

Symbols

The following list of international and safety symbols describes all symbols used on Spacelabs Medical
products. No one product contains every symbol.

Symbol Description Symbol Description

HELP Key Keyboard Connection

SPECIAL FUNCTIONS Key Mouse connection

RECORD Key START/STOP Key

NORMAL SCREEN Key START/STOP

MONITOR SETUP Key STOP or CANCEL Key

ALARMS Key CONTINUE Key

PREVIOUS MENU Key ENTER Key

ON — Power Connection to Mains

ON Position for Push Button Power
Switch

On Direction ON/OFF

Television; Video Display Video Output

OFF — Power Disconnection from
Mains

OFF Position for Push Button Power
Switch

ON — Part of the Instrument Only OFF — Part of the Instrument Only

7-1

Ambulatory Blood Pressure Monitor 90217 Service Manual

Symbol Description Symbol Description

Stand-by STAND-BY Key

PAUSE or INTERRUPT Slow Run

Reset Power Indicator LED

?

Alarm

Temporary Shut Off of Alarm Tone
or Screen Indicators

Indicator — Remote Control Indicator — Local Control

PRINT REPORT Key Indicator — Out of Paper

Partial ON/OFF Recorder Paper

1
2

1

3

Normal Screen Return to Prior Menu

2
3

Clock/Time Setting Key TREND/TIMER Key

HELP (Explain Prior Screen) Key Keypad

Activate Recorder for Graphics Indoor Use Only

START (NIBP) Key Auto Mode (NIBP)

Output No Output (Terminated)

7-2

Ambulatory Blood Pressure Monitor 90217 Service Manual

Symbol Description Symbol Description

Data Input/Output Input/Output

Input Reset

Menu Keys Waveform/Parameter Keys

1
2
3

1
2
3

Monitor Setup
Select Program Options

B

Access Special Function Menu Return Unit to Monitor Mode

1

Serial Port 1 Serial Port 2

External marker push button
connection

Arterial Pulse

1
2
3

1
2
3

A

Set Initial Conditions Menu

2

SDLC

SDLC Port

Electrocardiograph or
Defibrillator Synchronization

Gas Exhaust Foot Switch

Enlarge, Zoom Delete

x

12,200 m

PCMCIA Card Event

Keep Dry Fragile; handle with care

Environmental Shipping/Storage
Altitude Limitations

Environmental Shipping/Storage
Temperature Limitations

This Way Up

Environmental Shipping/Storage
Humidity Limitations

7-3

Ambulatory Blood Pressure Monitor 90217 Service Manual

Symbol Description Symbol Description

Open Padlock Closed Padlock

Down Arrow Up Arrow

Hard Drive Power Indicator LED

Antenna Mermaid Connector

Microphone Omnidirectional Microphone

Audio Output, Speaker Activate Telemetry Recorder

Network Connection Universal Serial Bus

Gas Sampling Port Gas Return Port

Remote Alarm; Nurse Alert Nurse Call

Battery Status Low Battery

Battery
Replace only with the appropriate
battery.

All batteries should be disposed of
properly to protect the environment.
Lithium batteries should be fully
discharged before disposal.
Batteries such as lead-acid (Pb) and
nickel-cadmium (Ni-Cd) must be
recycled. Please follow your internal
procedures and or local (provincial)
laws regarding disposal or recycling.

Replace only with the appropriate
battery.
(+ / - signs may be reversed)

Caution - hazardous voltages. To
reduce risk of electric shock, do not
remove the cover or back. Refer
servicing to a qualified field service
engineer (U.S.A.).

DANGER - High Voltage
(International)

7-4

Ambulatory Blood Pressure Monitor 90217 Service Manual

Symbol Description Symbol Description

Protective Earth Ground Functional Earth Ground

Replace Fuse Only as Marked Fuse

Power supply jack polarity.
(+ / - signs may be reversed)

Alternating Current Direct Current

Both Direct and Alternating Current AC/DC Input

AHz

VW

Amperes Hertz

Volts Watts

IEC 601-1 Type B equipment. The
unit displaying this symbol contains
an adequate degree of protection
against electric shock.

IEC 601-1 Type BF equipment
which is defibrillator-proof. The unit
displaying this symbol contains an
F-type isolated (floating) patient­applied part which contains an
adequate degree of protection
against electric shock, and is
defibrillator-proof.

Equipotentiality Terminal

Class II Equipment

IEC 601-1 Type BF equipment. The
unit displaying this symbol contains
an F-type isolated (floating) patient­applied part providing an adequate
degree of protection against electric
shock.

IEC 601-1 Type CF equipment. The
unit displaying this symbol contains
an F-type isolated (floating) patient­applied part providing a high degree
of protection against electric shock,
and is defibrillator-proof.

Loop Filter Adult NIBP

IEC 601-1 Type CF equipment. The
unit displaying this symbol contains
an F-type isolated (floating) patient­applied part providing a high degree
of protection against electric shock.

7-5

Ambulatory Blood Pressure Monitor 90217 Service Manual

S

Symbol Description Symbol Description

Note Note

WARNING

ETL Laboratory Approved

®

Canadian Standards Association
Approved

U

Risk of Explosion if Used in the
Presence of Flammable Anesthetics

!

!

Warning About Potential Danger to
Human Beings

Noninvasive Blood Pressure (NIBP),
Neonate

Fetal Monitor Connection
RS232 (Digital)

Happy Face Sad Face

CAUTION

Operates on Non-Harmonized
Radio Frequencies in Europe

Attention - Consult Operations or
Service Manual for Description

Caution About Potential Danger to a
Device

Fetal Monitor Connection (Analog)

Physiological Monitor Connection
RS232 (Digital)

Magnifying Glass Compression

File Cabinet List of Rooms

Arrows Printer

Recycle Service Message

Radio transmitting device; elevated
levels of non-ionizing radiation

7-6

Ambulatory Blood Pressure Monitor 90217 Service Manual

Abbreviations used as symbols are shown below.

Symbol Description Symbol Description

1 - 32

ANT 1
ANT 2

CH
ch

C.O.
CO
co

ECG
ecg

EMG
emg

Access Codes
1 Through 32

Diversity Antenna System 1
Diversity Antenna System 2

AIR Air

Arr1
ArrNet2

EEG, EMG, or ECG Channel
EEG Channels - CH1, CH2, CH3, CH4

cmH

EMG Channel - CH5

Cardiac Output

Electrocardiogram

DIA
dia

EEG
eeg

Electromyogram ESIS

Arrhythmia Net 1
Arrhythmia Net 2

O Centimeters of Water

2

Diastolic

Electroencephalogram

Electrosurgical Interference
Suppression

EXT External FECG Fetal Electrocardiogram

FHR1
FHR2

HLO
hlo

NIBP
nibp

O

2

RESP
resp

SPO2
SpO2
SpO
SaO

Fetal Heart Rate, Channel 1
Fetal Heart Rate, Channel 2

GND
gnd

Ground

High-Level Output Multiview Multi-Lead Electrocardiogram

Noninvasive Blood Pressure N

O Nitrous Oxide

2

PRESS

Oxygen

press

Pressure

PRS

Respiration SDLC Synchronous Data Link Control

Arterial Oxygen Saturation

2

2

as Measured by Pulse Oximetry

SVO2
SvO2
Sv

O

Mixed Venous Oxygen Saturation

2

7-7

Ambulatory Blood Pressure Monitor 90217 Service Manual

Symbol Description Symbol Description

SYS
sys

TEMP
temp

VAC Vacuum Connection

Systolic

Temperature UA Uterine Activity or Umbilical Artery

T1
T2
T3
T4

Temperature 1
Temperature 2
Temperature 3
Temperature 4

7-8

Appendix A — Electromagnetic

Contents

Electromagnetic Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Electromagnetic Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Frequency Separation Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Electromagnetic Emissions

Note:

The 90217 ABP monitor has been tested under laboratory conditions and is suitable
for use in all establishments, including domestic establishments and those directly
connected to the public low-voltage power supply network that supplies buildings
used for domestic purposes. The customer, or user, of the module should ensure that
it is used in such an environment.

Emission Test Compliance Electromagnetic Environment

Compatibility

RF emissions

CISPR 11

Group 1
Class B

Electromagnetic Immunity

Note:

The ABP monitor is intended for use in the electromagnetic environment specified
below. The customer, or user, of the module should ensure that it is used in such an
environment.

Immunity Test

Electrostatic
discharge (ESD)

IEC 61000-4-2

IEC 60601
Test Level

±6 kV contact
±8 kV air

The ABP monitor uses RF energy only for internal
function. Therefore, RF emissions are very low and
are not likely to cause any interference in nearby
electronic equipment

Compliance

Level

6 kV contact
8 kV air

Electromagnetic Environment

Floors should be wood, concrete, or
ceramic tile. If floors are covered with
synthetic material, the relative
humidity should be at least 30%.

A-1

90207 Ambulatory Blood Pressure Monitor Service Manual

Frequency Separation Distances

Note:

The ABP monitor is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer, or user, of the module can
help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the
module, as recommended below, according to the maximum output power of the
communications equipment.

Recommended Separation Distances Between Portable and Mobile RF Communications

Equipment and the Monitor (Always evaluate electronic equipment on site before use.)

Immunity

Test

Radiated RF

IEC 61000-4-3

IEC 60601
Test Level

3 V/m
80 MHz to

2.5 GHz

Compliance

Level

3 V/m
1 kHz sine
80% AM

Electromagnetic Environment

Portable and mobile RF communications equipment
should be used no closer to any part of the monitor,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance:

3.5

V

3.5

E

E

P

]

1

P

]

1

7

P

]

1

d =

[

150 kHz to 80 MHz

d =

[

80 MHz to 800 MHz

d =

[

800 MHz to 2.5 GHz

Where P is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer, and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,* should
be less than the compliance level in each frequency
range.**

Interference may occur in the vicinity of
equipment marked with the following symbol.
IEC 60417-5140: Non-ionizing
electromagnetic radiation

* Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones

and land mobile radios, amateur radio, AM and FM radio broadcast, and TV broadcast cannot be
predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in
the location in which the monitors are used exceeds the applicable RF compliance level above, the
monitors should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the monitors.

** Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [ V

] V/m.

1

A-2

90207 Ambulatory Blood Pressure Monitor Service Manual

Appendix A — Electromagnetic Compatibility

Rated Maximum

Output Power of

Tra nsmitter

(watts)

0.01 0.02 0.02 0.04

0.1 0.06 0.06 0.1

1 0.2 0.2 0.4

10 0.6 0.6 1.1

100 1.8 1.8 3.5

Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by

absorption and reflection from structures, objects, and people.

Separation Distance According to Frequency of Transmitter

(meters)

150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz

A-3