Spacelabs Healthcare Ultraview 90341 User manual

SERVICE MANUAL
070-0744-01 Rev. C | www.spacelabshealthcare.com September 2013
Ultraview® Digital Telemetry
90341, 90343, 90347, 90478, 90479-A/B/C,
91341-09, 91343-09, 91347-09

ULTRAVIEW DIGITAL TELEMETRY - SERVICE MANUAL
www.spacelabshealthcare.com
©2013 Spacelabs Healthcare
All rights reserved. Contents of this publication may not be reproduced in any form without
the written permission of Spacelabs Healthcare. Products of Spacelabs Healthcare 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 Healthcare 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 Healthcare, 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 Healthcare 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 Healthcare as field repairable.
Spacelabs Healthcare is committed to providing comprehensive customer support beginning
with your initial inquiry through purchase, training, and service for the life of your Spacelabs
Healthcare equipment.
CORPORATE OFFICES
Corporate Headquarters
Spacelabs Healthcare
35301 SE Center Street
Snoqualmie, WA 98065
U.S.A.
Telephone: [phone]
Telephone: [phone]
Authorized EC Representative
Spacelabs Healthcare, Ltd.
43 Moray Place
Edinburgh, EH3 6BT
United Kingdom
Telephone: [phone]
Fax: [phone]
Please refer to http://www.spacelabshealthcare.com/en/company/trademarks for a full listing of
Spacelabs Healthcare trademarks. Other brands and product names used herein are trademarks of their
respective owners.
Caution:
US Federal law restricts the devices documented herein to sale by, or on the
order of, a physician.
Before use, carefully read the instructions, including all warnings and cautions.
Rx Only
!

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Table of Contents
1Introduction
Overview.............................................................................................................................. 1-1
System Components...................................................................................................... 1-3
Patient-Worn Transmitters
(90341, 90347, 90343, 91341, 91343, 91347) ........................................................1-4
Selecting Options for the 90341/91341/91347 Lead Display .................... 1-8
Multiparameter Transmission (90343/91343) .............................................. 1-10
Battery Compartment SIP switches .................................................................. 1-10
Additional Data Transmitted ................................................................................1-12
Transmitter Batteries ............................................................................................ 1-12
Receiver Module (90478) ...........................................................................................1-13
Receiver Electrical Requirements ..................................................................... 1-15
Receiver Physical Dimensions ............................................................................ 1-15
Receiver Housing (90479-A/B/C) ..........................................................................1-16
Receiver Housing Physical Dimensions .......................................................... 1-17
Receiver Housing Power Requirements ......................................................... 1-17
Receiver Housing Environmental Requirements ......................................... 1-17
Operating .....................................................................................................................1-17
Storage ..........................................................................................................................1-18
Receiver Housing Rear Panel ............................................................................. 1-18
2Setup
Unpacking .......................................................................................................................... 2-1
Unpacking the Patient-Worn Transmitter ....................................................... 2-2
To unpack the transmitter.................................................................................... 2-2
Unpacking the Receiver Housing ....................................................................... 2-3
To unpack the receiver housing (refer to the
Drawing 12, Sheet 1 of 1)........................................................................................ 2-3
Unpacking the Receiver ........................................................................................ 2-3
To unpack the receiver (refer to Drawing 3, Sheet 2 of 2) ..................... 2-3
Receiver Housing Configuration ..............................................................................2-4
To ready the 90479-A/B/C receiver housing for operation .................. 2-4
SDLC Configurations ............................................................................................. 2-6
AC Mains Voltage Selection ................................................................................ 2-8
To change the voltage selection ....................................................................... 2-8
Fuse Replacement .................................................................................................. 2-9
To replace AC line fuses for the receiver housing......................................2-9
Receiver Installation .............................................................................................. 2-9
To install receiver modules into the receiver housing .............................. 2-9
Receiver Housing Power Operation ................................................................. 2-11
Patient-Worn Transmitter Configuration
(90341, 90343, 90347) ...............................................................................................2-12
Patient-Worn Transmitter Configuration
(91341, 91343, 91347)....................................................................................................2-13
Changing the Default Settings .......................................................................... 2-13
Units with Resistor Pack Programming ...........................................................2-14
Units with SIP Switch Programming .................................................................2-16
Verifying Correct Frequency Operation ........................................................ 2-18
Antenna System Installation .....................................................................................2-19
Site Survey ............................................................................................................... 2-19
Design ........................................................................................................................ 2-19
Installation ................................................................................................................ 2-19
Verification .............................................................................................................. 2-20
Tools for Tracking Transmitter Channels........................................................... 2-20
Wideband and Narrowband Channel Coordination and Deployment 2-23

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Wideband (50 kHz) Patient-Worn Transmitters ............................................ 2-50
Narrowband (25 kHz) Patient-Worn Transmitter............................................2-56
VHF Telemetry Channel Frequencies...................................................................2-68
3Theory
Patient-Worn Transmitters.......................................................................................... 3-1
Transmitter ECG PCBA Block Diagrams
(90341, 90343, 90347, 91341, 91343, and 91347) ......................................... 3-2
Transmitter ECG PCBA Description ................................................................. 3-3
Input Protection ......................................................................................................... 3-3
Lead Drive Switches ................................................................................................ 3-3
Input Buffers ............................................................................................................... 3-3
Lead Off Comparators ............................................................................................ 3-4
Differential Amplifiers ..............................................................................................3-4
Pacer Blanking Switches ........................................................................................3-4
Bessel Filter .................................................................................................................3-4
Final ECG Amplifiers ................................................................................................3-4
DC Restoration Comparators ...............................................................................3-4
Pacer Detection and Pacer Flag Generator ....................................................3-4
Automatic Lead Switching PAL ..........................................................................3-4
Transmitter RF PCBA Block Diagrams (90341, 90343, 90347) ............. 3-5
Transmitter RF PCBA Description (90341, 90343, 90347) ..................... 3-8
Status Mux ................................................................................................................... 3-8
ECG Mux ....................................................................................................................... 3-8
PWM PAL ..................................................................................................................... 3-8
PWM Ramp Generator ............................................................................................ 3-8
PWM Comparator ..................................................................................................... 3-8
PWM Data Formatter .............................................................................................. 3-8
PWM Filter ................................................................................................................... 3-8
Voltage Controlled Crystal Oscillator ............................................................... 3-9
First and Second Frequency Doublers .............................................................3-9
Transmitter RF PCBA Block Diagrams (91341, 91343, 91347) ................. 3-9
Transmitter RF PCBA Description (91341/91343/91347) .......................... 3-11
RF PCBA .......................................................................................................................3-11
Microcontroller ......................................................................................................... 3-14
Configuration SIP Switches ................................................................................. 3-14
Transmitter SpO2PCBA Description (90343/91343 only) ..................... 3-16
Definitions and Acronyms ....................................................................................3-16
Electrical Requirements .........................................................................................3-16
Pulse Oximetry Sensor Drive ...............................................................................3-17
NIBP Interface (SpO2to ABP) ............................................................................3-17
Patient Isolation ........................................................................................................3-17
Functional Descriptions .........................................................................................3-17
Receiver Module ............................................................................................................3-21
Receiver Signal Flow ........................................................................................... 3-22
CPU (80C186) PCBA Description .................................................................... 3-23
Watchdog/Power Reset .......................................................................................3-23
SDLC Mainframe Interface ...................................................................................3-23
RUPI/80C186 Interface .........................................................................................3-24
ECG Data Interface .................................................................................................3-24
High-Level Outputs and Defibrillator Sync Input .......................................3-24
Configuration EEPROM .........................................................................................3-25
Front Panel LED Indicators .................................................................................3-25
Power Supply PCBA ............................................................................................ 3-26
Antenna PCBA ....................................................................................................... 3-26
RF PCBA .................................................................................................................. 3-26

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Digital PCBA ........................................................................................................... 3-26
Modular Receiver Housing........................................................................................3-27
RF Signals ................................................................................................................ 3-27
90479-A Modular Receiver Housing ...............................................................3-27
90479-B/C Modular Receiver Housing ..........................................................3-28
Analog Output ....................................................................................................... 3-28
Power Supply ......................................................................................................... 3-28
Power Supply Functional Description ........................................................... 3-29
AC Input Module ......................................................................................................3-29
AC Input Rectifier and Filter ...............................................................................3-29
100 kHz DC-to-DC ................................................................................................. 3-30
Switcher Feedback Power .................................................................................. 3-30
Gate Drive Transformer ....................................................................................... 3-30
Main Isolation Transformer ................................................................................. 3-30
Secondary Side ....................................................................................................... 3-30
Battery Disconnect ................................................................................................ 3-30
Over/Under Voltage Shutdown .........................................................................3-31
DC ON/OFF ................................................................................................................3-31
+5 V, +12 V, and -12 V DC-to-DC Converter ...................................................3-31
LED/AC Operation ..................................................................................................3-31
Antenna Systems ..........................................................................................................3-31
Antenna Distance and Power Loss .................................................................. 3-31
Path Loss ....................................................................................................................3-32
Diversity Antenna System ................................................................................. 3-32
4Maintenance
Overview............................................................................................................................. 4-1
Cleaning/Disinfecting ...................................................................................................4-2
Physical Inspection ........................................................................................................4-3
Transmitter ................................................................................................................ 4-3
Receivers ................................................................................................................... 4-3
Housing ...................................................................................................................... 4-3
Antenna System Inspection .......................................................................................4-4
Preventive Maintenance ..............................................................................................4-4
Antenna System ...................................................................................................... 4-4
Test Equipment Required ......................................................................................4-4
Verification ..................................................................................................................4-4
Safety Verification .........................................................................................................4-5
Current Leakage Measurements (90479-A/B/C only) .............................. 4-6
Battery Backup Test .....................................................................................................4-6
To conduct the module housing battery backup test...............................4-6
Battery Disposal.............................................................................................................. 4-7
Disassembly/Assembly of the Receiver Module................................................ 4-7
Disassembling the Receiver Module ................................................................ 4-8
Assembling the Receiver Module .................................................................... 4-10
Disassembling/Assembling the Module Housing ...................................... 4-10
Battery Replacement ............................................................................................. 4-10
To replace the internal power backup battery .......................................... 4-10
Top Cover Removal ..................................................................................................4-11
To remove the module housing top cover ....................................................4-11
Power Supply Removal ...........................................................................................4-11
To remove the power supply from the module housing .........................4-11
RF Amplifier Removal ............................................................................................4-12
To remove the RF Amplifier PCBA..................................................................4-12
Disassembling the 90347 and 90341 Transmitters ................................... 4-12
To remove the ECG and transmitter PCBAs................................................4-12

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Assembling the 90347 and 90341 Transmitters ......................................... 4-14
To replace the ECG and transmitter PCBAs ............................................... 4-14
Disassembling the 90343 Transmitter ........................................................... 4-14
To remove the ECG, transmitter, and SpO2PCBAs................................. 4-16
Assembling the 90343 Transmitter ................................................................ 4-16
To replace the ECG, transmitter, and SpO2PCBAs ................................. 4-16
ECG Performance Test ........................................................................................ 4-17
SpO2Performance Test ....................................................................................... 4-18
Disassembling and Reassembling the 91341/91347 Transmitter ........ 4-20
Disassembling and Reassembling the 91343 Transmitter ...................... 4-22
Transmitter Field Alignment Procedures........................................................... 4-24
Definitions ............................................................................................................... 4-24
Test Equipment Required .................................................................................. 4-25
Initial Equipment Setup ...................................................................................... 4-25
Equipment Setup .................................................................................................. 4-25
Equipment Setup .................................................................................................... 4-26
Power-Regulated Current Drain Test...................................................................4-27
First Current Drain Test ...................................................................................... 4-27
Crystal Oscillator Test ......................................................................................... 4-27
Power Output Adjustment ................................................................................ 4-28
Assigned Frequency Alignment ...................................................................... 4-28
Final Current Drain Test ..................................................................................... 4-29
Transmitter Alignment Procedures...................................................................... 4-29
Power Output Test and Center Frequency Adjustment
For Models 90341, 90343, and 90347 .......................................................... 4-29
Power Output Test ................................................................................................ 4-29
Center Frequency Adjustment .........................................................................4-30
Output Power Test and Center Frequency Tests For Models 91341-09,
91343-09, and 91347-09 ..................................................................................... 4-33
Equipment Required ............................................................................................. 4-34
Output Test .............................................................................................................. 4-35
To verify transmitter power ouput ................................................................ 4-35
Verify Center Frequency, Model 91341-09 ................................................... 4-36
To verify transmitter center frequency........................................................ 4-36
Verify Center Frequency, Models 91343-09 and 91347-09 ................... 4-36
To verify transmitter center frequency........................................................ 4-36
Field Current Drain Test ............................................................................................4-37
Initial Test Setup for 90341, 90347, 90343, 91341, 91343, and
91347 Transmitters ................................................................................................ 4-38
Current Drain Test for 90341 and 90347 Transmitters ........................... 4-39
Current Drain Test for 90343 Transmitters ................................................. 4-39
Current Drain Test for 91341/91343/91347 Transmitters ........................4-40
5Troubleshooting
Diagnostics ........................................................................................................................ 5-1
Receiver Self-Test ................................................................................................... 5-1
Receiver LEDs ........................................................................................................... 5-1
Patient-Worn Transmitter .................................................................................... 5-3
Touchscreen Messages and Troubleshooting Guide........................................ 5-3
ECG Alarm Message Summary .......................................................................... 5-4
CHECK XX .................................................................................................................... 5-4
ABNORMAL/MINUTE ALARM ..............................................................................5-4
ASYSTOLE ...................................................................................................................5-4
COUPLET ALARM .....................................................................................................5-4
ECG ALARMS OFF ....................................................................................................5-4
ECG ALARMS SUSPENDED ..................................................................................5-4

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ECG PROCESSING SUSPENDED ......................................................................... 5-5
ECG VOLTAGE TOO LOW .................................................................................... 5-5
HI RATE ALARM ........................................................................................................ 5-5
IN LEARN ...................................................................................................................... 5-5
CHAN 1 & 2 LEADS OFF ......................................................................................... 5-5
CHAN 1 LEADS OFF ................................................................................................. 5-5
CHAN 2 LEADS OFF ................................................................................................ 5-5
LO RATE ALARM ...................................................................................................... 5-5
NEW DOMINANT ...................................................................................................... 5-6
NOISY SIGNAL ........................................................................................................... 5-6
RUN ALARM ................................................................................................................ 5-6
V FIB ............................................................................................................................... 5-6
SpO2Alarm Message Summary ......................................................................... 5-6
ADAPTER DISCONNECTED — CHECK CONNECTION AT MODULE ... 5-7
SENSOR DISCONNECTED — CHECK CONNECTION AT
ADAPTER CABLE ..................................................................................................... 5-7
SENSOR OFF PATIENT — CHECK CONNECTION AT PATIENT .............5-8
FAULTY SENSOR — REPLACE SENSOR .........................................................5-8
AMBIENT LIGHT INTERFERENCE — COVER SENSOR AREA ................. 5-8
INSUFFICIENT SIGNAL — REPOSITION OR REPLACE SENSOR ...........5-8
NOISY SIGNAL ........................................................................................................... 5-8
NIBP Alarm Message Summary ......................................................................... 5-8
NIBP UNAVAILABLE (xx) ...................................................................................... 5-9
NIBP READING FAILURE (xx) .............................................................................. 5-9
NIBP AIR LEAK ........................................................................................................... 5-9
NIBP LOOSE OR NO CUFF ................................................................................... 5-9
NIBP READING CANCELLED ............................................................................... 5-9
NIBP LOW BATTERY ............................................................................................... 5-9
NIBP KINKED HOSE ................................................................................................. 5-9
NIBP EVENT CODE (xx) ......................................................................................... 5-9
Telemetry Radio Frequency Problem Solving .................................................. 5-10
Frequent Squelch .................................................................................................. 5-10
90479-A Receiver Housing ................................................................................. 5-10
90479-B/C Receiver Housing ..............................................................................5-11
Signal Interference ....................................................................................................5-11
Reducing Squelch .....................................................................................................5-11
Use of RF Performance Statistics .................................................................... 5-12
Squelch Statistics Menu .........................................................................................5-13
Receiver Does Not Display an ECG Trace .................................................... 5-14
Specific Receiver Will Not Sign On to Monitor ........................................... 5-14
No Receiver Signs On to Monitor .................................................................... 5-15
Power Supply Voltage Measurements (90479-A/B/C) ........................... 5-16
6Parts
Overview............................................................................................................................. 6-1
Assembly Drawings........................................................................................................ 6-1
A Appendix A — Electromagnetic Compatibility
Electromagnetic Emissions .........................................................................................A-1
Electromagnetic Immunity .........................................................................................A-2
Frequency Separation Distances ............................................................................ A-3
Left Ventricular Assist Device (LVAD) ................................................................. A-4
Command Module (91496) .................................................................................. A-4
To turn pacer detection OFF ............................................................................. A-4
Telemetry .................................................................................................................. A-4
B Appendix B — Symbols

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ULTRAVIEW DIGITAL TELEMETRY - SERVICE MANUAL
Introduction
Overview
The Ultraview®Digital Telemetry System is comprised of patient-
worn transmitters, a ceiling-mounted antenna system, receiver
modules, receiver module housings, central surveillance monitors,
and central strip recorders. Portable bedside patient monitors are
often incorporated into the telemetry system. A patient-worn
ambulatory blood pressure (ABP) monitor and its management
software may also integrate into the system.
Notes:
• Spacelabs Healthcare products and parts are designed and
manufactured in accordance with the Food and Drug
Administration’s (FDA) Quality System Regulation (QSR) and
in compliance with all applicable regulatory requirements. To
ensure proper operation in accordance with these guidelines,
Spacelabs products must be maintained by trained
technicians using only authorized replacement parts.
Spacelabs replacement parts have been thoroughly tested to
ensure reliable performance and include all of the latest
improvements and design changes available to ensure a
quality repair process.
• Prior to deployment of 90341/90343/90347/91341/91343/
91347 transmitters, hospital registration and deployment
registration must be performed with the WMTS Frequency
Coordinator. Refer to www.ashe.org for more information.

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ULTRAVIEW DIGITAL TELEMETRY -
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Figure 1-1 Ultraview Digital Telemetry system components
91341/91347 (ECG)
digital telemetry
transmitter
90341/90347
(ECG)
digital telemetry
transmitter
90343
(ECG and SpO2)
digital telemetry
transmitter
91343
(ECG and SpO2)
digital telemetry
transmitter
Diversity antenna
system
90478-Q receiver
module 90478-T/V receiver module
SL2200/SL2400/SL2600
bedside or portable monitor SL3800 central monitor with SDLC
cabling (1)
90479-A/B/C Digital telemetry
receiver module housing
1

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System Components
Patient-worn transmitters:
90341 ECG (25 kHz narrowband)
90347 ECG (50 kHz wideband)
90343 Multiparameter (50 kHz wideband)
91341 ECG (25 kHz narrowband)
91343 Multiparameter (50 kHz wideband)
91347 ECG (50 kHz wideband)
Ceiling-mounted antenna kits:
174-216 MHz VHF, Passive
433-471 MHz UHF, Passive
608-614 MHz UHF high-gain, Passive
608-614, 1395-1400, 1427-1431.5 MHz, Active
Receiver modules:
Receiver module housings:
90479-A/B/C
Central surveillance monitors:
90387 Ultraview 1700
91387 Ultraview SL3800
Central strip recorder:
90469
Portable patient monitors:
90369 Ultraview 1050
91367 Ultraview SL™ 2200
91369 Ultraview SL2400
90478-N 202-203 MHz English, Dutch
90478-G 430-442 MHz English, German, French,
Italian, Spanish, Dutch,
Swedish
90478-R 455-460 MHz English
90478-U 460-470 MHz English, French, Italian
90478-I 608-614 MHz English, French
90478-Q 608-614 MHz English, French
90478-T 602-607 MHz English
90478-V 615-619.5 MHz English

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91370 Ultraview SL2600
Patient-worn ABP monitors:
90217 Ultralite™ ABP monitor
90121 Report Management software
Patient-Worn Transmitters
(90341, 90347, 90343, 91341, 91343, 91347)
The patient-worn transmitter is a small, battery-powered device that
collects physiologic data and communicates it via radio frequencies
(RF) through a system of ceiling-mounted antennas to a receiver
and central monitoring station for viewing and analysis. The
transmitter must be in range of a receiver module or its ceiling-
mounted antenna system for surveillance monitors to display
waveforms and generate alarm events and patient data (trends).
Spacelabs offers several patient-worn transmitter models that vary
in frequency-operation and clinical functionality, described in Table
1-1 and in Table 1-2 on page 1-7.

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Table 1-1 Patient-Worn Transmitter Specifications: 90341, 90347, and 90343
ECG only ECG only Multiparameter
(ECG & SpO2)
Model,
frequency
(MHz), &
country
90341-74: 174.0125 to
197.9875 MHz (US)
90341-16: 198.0125 to
216.9875 MHz (US)
90341-16-IEC: 202.6875
to 205.1375 MHz
(Netherlands)
90341-50: 458.525 to
458.0875 MHz (UK)
90341-32: 433.0625 to
434.7875 MHz (Germany,
Austria, Czech Republic,
France, Italy, Spain,
Portugal, Belgium,
Netherlands, Australia)
90341-34: 433.075 to
433.350 MHz (Spain)
90341-52: 468.625 to
468.675 MHz (Finland)
90341-42: 438.025 to
439.975 MHz (Sweden)
90341-46: 440 to
441.975 MHz (Norway)
90341-40: 469.1625 to
469.850 MHz (Australia)
90341-53: 470 to
470.500 MHz (New
Zealand)
90341: 460 to 470 MHz1
(US, Canada)
90341-05: 608 to
614 MHz2(US, Canada,
Australia)
90347-05: 608 to 614
MHz (US, Canada,
Australia)
90347-05-IEC: 608 to
614 MHz (France)
90343-05: 608 to 614
MHz (US, Canada,
Australia)
90343-05-IEC: 608 to
614 MHz (France)
90343-16: 202.6825 to
205.1375 MHz
(Netherlands)
90343-16-AAMI:
202.6825 to 205.1375
MHz (Taiwan)
Regulatory
approvals CE marked to MDD3 &
RTTE Directive
FCC/Industry Canada
(IC)
(90341 & 90341-05 only)
CSA
FCC/IC
CSA
MDD
FCC/IC (90343-05 only)
CSA
MDD
Bandwidth 25 KHz 50 kHz
ECG leads
transmitted II and V1 or II and III Seven
(from 4 vectors)

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1Private Land Mobile Radio band (US & Puerto Rico only)
2Wireless Medical Telemetry Service (US & Puerto Rico only)
3Medical Device Directive
ECG lead
viewing/
analysis
II and V1 or two of six
(in Limb Lead mode)
Two of seven
SpO2No Yes: Spacelabs algorithm
with Nellcor sensors
NIBP No Yes: Interfaces with
Spacelabs 90217 ABP
monitor
Pacer ID Yes: +2 mV to +7 mV
Remote
Record button Yes
Battery type One 9 V alkaline or lithium
Alkaline
Battery life
(refer to Table
1-6 on page 1-
12)
52 hours 24 hours with ECG &
continuous SpO2,
48 hours ECG only
Antenna type Right arm leadwire
Size
(H × W × D)
13.3 × 7.2 × 2.5 cm
(5.25 × 2.85 × 0.98 in)
Weight 192.7 g (6.78 oz)
w/o battery
241 gm (8.5 oz)
w/o battery
Water
resistance Yes: EN 60529-IPX2
Incompatibility 9034x-15 Not compatible with
9034X telemetry processors
Output power <1 mW EIRP
Tab le 1-1 Patient-Worn Transmitter Specifications: 90341, 90347, and 90343
(Continued)
ECG only ECG only Multiparameter
(ECG & SpO2)

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Tab le 1-2 Patient-Worn Transmitter Specifications: 91341, 91343, 91347
ECG only ECG only Multiparameter
(ECG & SpO2)
Model,
frequency
(MHz), &
country
91341-09: (US only)
1395 to 1400 MHz
(Entire US)
1427 to 1431.5 MHz
(FCC band swap in effect
in certain US cities)
91347-09: (US only)
1395 to 1400 MHz
(Entire US)
1427 to 1431.5 MHz
(FCC band swap in effect
in certain US cities)
91343-09: (US only)
1395 to 1400 MHz
(Entire US)
1427 to 1431.5 MHz
(FCC band swap in effect
in certain US cities)
Regulatory
approvals FCC
CSA
MDD
FCC
CSA
MDD
FCC
CSA
MDD
Bandwidth 25 kHz 50 kHz
ECG leads
transmitted II and V1 or II and III Seven (from 4 vectors)
ECG lead
viewing/
analysis
II and V1 or two of six
(in Limb Lead mode) Two of seven
SpO2No Yes: Spacelabs algorithm
with Nellcor sensors
NIBP No Yes: Interfaces with
Spacelabs 90217 ABP
monitor
Pacer ID Yes: +2 mV to +7 mV
Remote
Record button Yes
Battery type One 9 V alkaline or lithium
Alkaline
Battery life
(refer to Table
1-6 on page 1-
12)
52 hours 24 hours with ECG and
continuous SpO2;
48 hours ECG only
Antenna type Integrated dipole
Size
(H × W × D)
16.5 × 8.1 × 2.5 cm
(6.5 × 3.2 × 0.98 in) 16.5 × 8.1 × 3 cm (6.5 × 3.2 × 1.18 in)
Weight 209.8 g (7.4 oz) w/o
battery
209.8 g (7.4 oz) w/o
battery
261 g (9.2 oz) w/o battery
Water
resistance
Yes: EN 60529-IPX2

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ULTRAVIEW DIGITAL TELEMETRY -
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A patient-activated RECORD button can be used to initiate an event
recording at the system printer (this feature must first be enabled at
the monitor using the ECG TM SETUP menu). All four telemetry
patient-worn transmitters incorporate a low battery indicator that
flashes when the battery capacity has approximately three hours of
remaining energy.
• Wideband (50 kHz) 90343, 90347, 91343, and 91347 ECG
transmission enables you to view two of seven available leads
(from four vectors with a synchronized RF digital signal).
• Narrowband (25 kHz) 90341/91341 ECG transmission enables
you to view either two of two or two of four available leads
(from two vectors with a synchronized RF digital signal).
• The 91341, 91343, and 91347 transmitter provides functionality
for local lead fault indicators and user-configurable transmit
frequency operation.
The front labels on the transmitters are color coded to their
compatible receivers.
• The 90341, 90343, and 90347 transmitter labels are blue.
• The 91341, 91343, and 91347 transmitter labels are green.
Selecting Options for the 90341/91341/91347 Lead Display
There are two operational modes available with the 90341 dual-lead
transmitter: (1) the standard mode which offers a choice of one V
lead (V1-6), plus lead II, or (2) the limb lead mode which offers
choices of the leads I, II, III, AVR, AVL, or AVF. The standard mode is
available if the chest lead is applied. The limb lead mode is available
when there is not a chest lead applied. Loss of the chest electrode
changes the ECG - LEAD SELECT menu to the limb lead mode if the
left arm, left leg, and right arm electrodes are intact.
Note:
Both modes work correctly with or without the right leg
electrode attached. However, for optimum performance, the
right leg electrode should always be used.
Incompatibility Not compatible with 9034X telemetry processors
Output power <5 mW EIRP, max
Tab le 1-2 Patient-Worn Transmitter Specifications: 91341, 91343, 91347 (Continued)
ECG only ECG only Multiparameter
(ECG & SpO2)

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Notes:
• If one of the leads fails, a lead fault message will display in the
upper-left corner of the waveform zone. If there is not a valid
lead vector, the message LEADS OFF displays and an alarm
tone sounds.
• The 91341 and 91347 dual-lead transmitters have blue
indicators near the ECG connector block. Each indicator
provides the status of its respective lead wire and flashes if its
lead wire is disconnected from the skin electrode or if the skin
electrode makes poor electrical contact with the patient.
Figure 1-2 91341/91347 transmitter
Table 1-3 90341/91341 Lead Options
Connected Electrodes (X)
Valid Lead Vectors
C
(C)
LA
(L)
LL
(F)
RA
(R)
X X X X V1-6 and II (standard mode)
X X X III (standard mode)
X X X I (standard mode)
X X Total lead failure (standard mode)
XXXII(standardmode)
X X None (lead failure)
X X None (lead failure)
X None (lead failure)
X None (lead failure)
X None (lead failure)
X None (lead failure)
None (lead failure)
X X III (limb lead mode)
X X I (limb lead mode)
X X II (limb lead mode)
X X X I, II, III, AVR, AVL, AVF (limb lead mode)
Lead fault indicators
(91341 and 91347)

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Multiparameter Transmission (90343/91343)
The following data can be transmitted by the multiparameter,
patient-worn transmitter:
•SpO
2(with Nellcor pulse oximetry sensors)
- saturation
-SpO
2sensor status
-pulserate
• NIBP (with the model 90217 ABP monitor)
-systolic
- diastolic
- mean pressure
- measurement time
- alarm conditions
Battery Compartment SIP switches
SpO2data averaging is used to smooth the oximetry saturation
value by averaging the patient input values over 4, 8, or 16 seconds.
This selection is made by setting the SIP switches 1 and 2 beneath
the battery compartment in the multiparameter, patient-worn
transmitter. The default value is 8 seconds. Refer to Figure 1-3 on
page 1-11.
Notes:
• Setting both SIP switches 1 and 2 to ON disables SpO2data
transmission.
•ToenableSpO
2, remove the battery, set the selected interval,
and re-install the battery.
• Disabling SpO2operation in the 90343/91343 patient-worn
transmitter lengthens battery life.
Caution:
Avoid using pencils or sharp instruments to configure the SIP
switches.
Table 1-4 SIP switch 1 and 2 Settings
SIP switch 1 SIP switch 2 Effect
OFF OFF 4 seconds averaging enabled
OFF ON 8 seconds averaging enabled (default)
ON OFF 16 seconds averaging enabled
ON ON Disable SpO2operation

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The current setting of the SpO2averaging period can be displayed
by pressing the ECG CHANNEL FORMAT key and enabling SpO2.
Figure 1-3 SIP switch setting in battery compartment
The sampling interval selection enables you to determine how often
an SpO2measurement will be taken. Less frequent SpO2readings
can extend the usable life of the battery. (Refer toTransmitter
Battery Service Life1(hours) on page 1-12 for more information.) This
selection is made by setting SIP switches 3 and 4 beneath the
battery compartment. The default setting is CONTINUOUS.
1 2 3 4
SpO2averaging
period
SpO2reading
interval
5 6 7 8
ON
OFF
enable
normal
enabledisable
IABP
disable
NIBP Adult
enable
NIBP
enable
IABP
enable
Neonate
enable
Service use
operation
Caution:
No SpO2monitoring occurs between episodic sampling intervals.
Clinical practice or medical judgement should be used in selecting
continuous or episodic SpO2monitoring mode for each specific
patient.
Table 1-5 SIP switch 3 and 4 Settings
SIP switch 3 SIP switch 4 Effect
OFF OFF Continuous sampling (default)
OFF ON 2-minute sampling interval
ON OFF 5-minute sampling interval
ON ON 30-minute sampling interval
Caution:
SIP switch 8 must remain OFF for normal operation.

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Additional Data Transmitted
The following information is also transmitted:
• Patient record
• Low battery indicator
•Pacerflag
• Transmitter type and channel number codes
•Electrodeconnectionstatus
Transmitter Batteries
The patient-worn transmitters use a 9V lithium or alkaline battery. A
yellow LED flashes when battery level is low.
1Operational service life (in hours) assuming a new alkaline battery
(minimum 580 mAH capacity) or lithium battery (minimum 1200
mAH capacity) used until the local low battery indicator begins to
flash.
2NIBP operations from a 90217 ABP monitor sending readings to
the 90343/91343 multiparameter telemetry transmitter. The
90217 ABP monitor will inflate a standard size adult cuff at least
240 times with alkaline batteries.
Table 1-6 Transmitter Battery Service Life1(hours)
Battery
Type 9 Volt Alkaline (ANSI/NEDA 1604A) 9 Volt Lithium (ANSI/NEDA 1604LC)
Load
Conditions2
ECG
Only
ECG and
Con-
tinuous
SpO2
ECG and 2-
minute
Episodic
SpO2
ECG and 5-
minute
Episodic
SpO2
ECG and
30-minute
Episodic
SpO2and
NIBP
ECG
Only
ECG and
Con-
tinuous
SpO2
ECG and 2-
minute
Episodic
SpO2
ECG and
5-minute
Episodic
SpO2
ECG and
30-minute
Episodic
SpO2
90343,
91343
48 24 36 38 40 120 60 100 104 106
90341,
90347,
91341,
91347
52 N/A N/A N/A N /A 13 2 N /A N/A N/A N/A