Netech EXPMT 2000 User manual

EXPMT 2000
External Pacemaker Analyzer
Operating Manual
110 Toledo Street
Farmingdale, NY 11735
Phone: [phone] Fax: [phone]
www.netech.org
EXPMT 2000 User Manual

Copyright
Copyright © 2003 by Netech Corporation. All rights reserved. No part of this publication
may be reproduced or transmitted in any form other than for the purchaser’s personal use
without written permission from Netech Corporation.
Quality Assurance
Netech is ISO 9001-2000 Registered. This instrument was thoroughly tested and inspected
according to Netech’s ISO 9001-2000 quality standards and test procedures and found to
meet those specifications when it was shipped from the factory.
Warranty
Netech warrants the EXPMT 2000 against defects in materials and workmanship for one year
from the date of original purchase. The standard warranty is extended for a second year if the
instrument is returned to Netech for its recommended annual recalibration.
During the warranty period, we will repair or, at our option, replace at no charge a product
that proves to be defective, provided you return the product shipping prepaid to Netech
Corporation. This warranty does not apply if the product has been damaged by accident or
misuse or as the result of service or modification by other than Netech Corporation, or if its
serial number is defaced or removed.
Netech reserves the right to discontinue the EXPMT 2000 at any time, and change its
specifications, price, or design without notice and without incurring any obligation. Netech
guarantees availability of service parts for 5 years after the manufacture of the unit is
discontinued.
The warranty is void if you elect to have the unit serviced and / or calibrated by someone
other than Netech.
The purchaser assumes all liability for any damages or bodily injury that may result from the
use or misuse of the unit by the purchaser, his employees, agents, or customers. In no event
shall Netech Corporation be liable for consequential damages
Trademarks
Netech and EXPMT 2000 are trademarks of Netech Corporation. Any other trademark names
used in this manual are only for editorial purposes and the benefit of the respective trademark
owner with no intention of improperly using that trademark.
EXPMT 2000 User Manual 2

Table of Contents
1. General Overview
1.1 Introduction ------------------------------------------ 06
1.2 Safety Considerations ------------------------------------ 06
1.3 Specifications ------------------------------------------ 07
1.4 Accessories ------------------------------------------ 08
2. Operating Instructions
2.1 Getting Started ------------------------------------------ 09
2.2 Instrument Familiarity ----------------------------------- 09
2.3 Power Up and Initialization ---------------------------- 10
2.4 Menu Structure -------------------------------------------- 10
2.5 Testing Transthoracic Pacers -------------------------- 11
2.5.1 Selecting Pacer Manufacturer ----------------- 12
2.5.2 Selecting 50 Ohm Test Load ------------------ 12
2.5.3 Selecting Variable Test Loads ---------------- 13
2.5.4 Measuring Pulse Parameters ------------------ 13
2.5.5 Measuring Refractory Periods ---------------- 13
2.5.6 Demand Sensitivity Tests ---------------------- 14
2.5.7 Immunity Tests ---------------------------------- 15
2.5.8 Measuring Energy -------------------------------- 16
2.6 Testing External Transvenous Pacers (AV) -------- 16
2.6.1 Measuring Pulse Parameters ---------------- 16
2.6.2 Measuring Refractory Periods --------------- 17
2.6.3 Demand Sensitivity Tests -------------------- 18
2.6.4 Immunity Tests ----------------------------------- 19
2.6.5 Measuring AV Interval ------------------------ 20
2.6.6 Measuring Energy ------------------------------ 20
2.6.7 Pacemaker Type Selection ------------------- 20
2.7 Printing Pacer Measurements ------------------------ 21
2.7.1 Printing Without a Header --------------------- 21
2.7.2 Printing With a Header ------------------------- 21
2.8 Automatic Pacer Testing --------------------------------- 22
2.9 Printer Functions ----------------------------------------- 23
2.10 Auxiliary Functions -------------------------------------- 24
2.10.1 AV Pacer Test Function -----------------------25
EXPMT 2000 User Manual 3

2.10.2 Transcutaneous Pacer Test Function -----25
2.10.3 Calibration Check ------------------------------ 26
2.10.4 Printer Format Selection ----------------------27
2.10.5 Pacemaker Battery Current Test ---------- 27
3. Palm Pilot Interface
3.1 Introduction ------------------------------------------ 28
3.2 Netech PalmSoft Set Up Procedure -----------28
3.3 Receiving and Saving Data ----------------------28
4. Troubleshooting EXPMT 2000--------------------------- 29
5. Appendix ------------------------------------------------------- 31
This Manual is provided to explain the operation of the EXPMT 2000,
External Pacemaker Analyzer.
It is intended for the biomedical engineering or clinical engineering
technician involved in the testing of external pacemakers.
The operator must be familiar with and follow the safety protocols
recommended by the device manufacturer.
EXPMT 2000 User Manual 4

Safety Notes:
1. Before using the EXPMT 2000 read the instruction manual and
become familiar with the functions and controls.
2. Do not discharge a defibrillator into any connectors of the
EXPMT 2000.
3. The operating instructions of the manufacturers of all
combination defibrillator / pacer instruments and transvenous
pacemakers being tested must be followed.
4. Do not connect transthoracic and transvenous pacemakers
simultaneously. Test only one type at a time.
5. Do not connect the pacer input before the EXPMT 2000 is
turned ON.
6. Do not change the variable pacer test load while a transthoracic
pacemaker is turned on. Turn the pacemaker off before
selecting a test load.
7. Do not discharge the output of a defibrillator into the EXPMT
2000.
EXPMT 2000 User Manual 5

GENERAL OVERVIEW Section 1
1.1 Introduction
The EXPMT 2000 pacemaker analyzer is an advanced microprocessor
based test instrument designed to accurately measure the output
parameters of all external pacemakers, including both transthoracic and
transcutaneous devices.
The instrument is easy to use via the menu structure presented on
a large four line LCD display. Resulting measurements of the tests
performed are simultaneously shown on the LCD display.
The EXPMT 2000 is compact, lightweight, and rugged. It may be
operated with one 9 volt battery or with an optional AC adapter. A standard
RS232 serial port allows for printing and storage of results with optional
printers and PDAs.
1.1.1 Pacemaker Test Functions
The EXPMT 2000 makes several measurements of external
transthoracic, transvenous, and AV pacemakers.
1.1.1.1 Transthoracic Pacers
Test load: 50 Ohms or 12 user selectable loads from 100 to 1000 Ohms
using the plug in test load selector.
Measures: Peak current, pulse width, pulse rate, paced refractory period,
sensed refractory period, and pulse energy.
1.1.1.2 Transvenous Pacers
Measures: Peak current, pulse width, pulse rate, paced refractory period,
sensed refractory period, immunity test (50Hz/60 Hz), A/ V interval, and
pulse energy.
Measures: the current drain of the pacemaker using the optional adapter
(PN: 652-BATT).
1.2 Safety Considerations
Before using the EXPMT 2000, the operator must follow the safety
precautions listed in this manual.
EXPMT 2000 User Manual 6

1.2.1 Defibrillator / Pacer Combination Instruments
Defibrillators deliver high voltage shocks to a patient in order to stop a heart
attack. The defibrillator discharge pulse is potentially dangerous.
1.3 Specifications
1.3.1 External Pacer Analyzer
1.3.1.1 Transthoracic
Test Load: Fixed 50 Ohms, or 12 user selectable loads from 100 to
1000 Ohms, with EXPMT load selector.
Current: 1 to 200 mA.
Accuracy: ±5% +. 5 mA
Pulse Width: 0.5 to 80 ms.
Accuracy: ±1% +.1 ms.
Refractory: 20 – 500 ms.
Accuracy: ±2 % or +10ms.
1.3.1.2 Transvenous (Atrial and Ventricular)
Test Load: 500 Ohms ±1%.
Current: 1 to 25 mA.
Accuracy: ±5% +. 5 mA.
Pulse Rate: 30 to 800 ppm.
Pulse Width: 0.5 to 80 ms.
Accuracy: ±1% +.1 ms.
Refractory: 20 – 500 ms.
Accuracy: ±2 % or +10ms.
Immunity Test: 50/60 Hz.
1.3.2 RS 232 Output
A computer interface is available to print test results or to save them on
a PC. The test results can be saved directly to a Palm Pilot using
Netech’s optional palm software.
1.3.3 Power Requirements
One 9 Volt Alkaline Battery or optional AC adapter.
EXPMT 2000 User Manual 7

1.3.4 Physical Characteristics
1.3.4.1 Dimensions
7.75 x 4 x 1.5 in. (19.7 x 10.2 x 3.8 cm)
1.3.4.2 Weight
1 lb (0.9 Kg)
1.3.5 Environmental Operating Specifications
Storage Temperature: -25 to 50oC
Operating temperature: 15 to 40oC
Maximum Humidity: 95% Relative Humidity
1.4 Accessories
1.4.1 Standard Accessories
AC Adapter (110 VAC) 301 (110VAC)
AC Adapter (220 VAC) 301-220 (220 VAC)
Operating Manual 950-USER-MANUAL
Service Manual 950-SERV-MANUAL
Carrying Case 950-CASE
Universal Pacer Adapters (set of 2) 953
Unterminated Banana Plug (set of 2) 6383-02
1.4.2 Optional Accessories
Printer DPM 441
Serial Printer Interface Cable 903
Transthoracic Cable Adapters:
HP 951-HP
Zoll 951-Zoll
PhysioControl 951-Physio
Marquette 951-MARQ
Universal A/V Pacer Adapter Cable 652
Pacemaker Battery Test Adapter 652-BATT
EXPMT 2000 User Manual 8

OPERATING INSTRUCTIONS Section 2
2.1 Getting Started
Before unpacking the EXPMT 2000 inspect the shipping box for any visual
damage. If damage is found, do not unpack the unit and immediately notify
the shipping carrier.
If no damage is found to the shipping box, open the box and perform a visual
inspection of the EXPMT 2000. If any damage to the unit is observed please
contact Netech Customer Service.
The Netech warranty statement is listed in the warranty section of this
manual. When shipping an instrument to Netech for repair or calibration
make sure that the instrument is properly packed. A completed Service
Return Form must be included with the returned instrument to ensure the
timely repair and return of your instrument. The Service Return Form may
be obtained at our web site www.Netech.org or from the Netech
Customer Service Department.
2.2 Instrument Familiarity
Before proceeding to use the EXPMT 2000 make sure you read this manual
and become familiar with the functions, the controls, and the menu
operation.
EXPMT 2000
8
5
7
6
9
3
2
4
1
10
EXPMT LOAD
SELECTOR
EXPMT 2000 User Manual 9

1. On / Off Switch
2. Serial Port
3. Five ECG Leads
4. LCD Display
5. Transvenous Inputs
6. Pacer Input Selector
7. Trancutaneous Inputs
8. Function Keys
9. DC Power Input
10. Transcutaneous Load Selector.
2.3 Power Up and Initialization
The EXPMT 2000 is battery powered. The power On / Off switch is located
on the right hand side of the instrument. When the instrument is turned on,
the model and the software revision level are displayed for about 5 seconds.
2.3.1 RS 232 Setup
The EXPMT 2000 can be connected to a printer / PC or a Palm Pilot via the
RS 232C SERIAL PORT located on the side of the instrument.
The default settings for the serial communication are:
Baud Rate = 9600, Data Bits = 8, Parity = None, Stop Bit = 1
These settings must be the same for the PC or the Printer. To retrieve the
data into a Palm Pilot use the optional interface cable for the Palm Pilot.
2.4 Menu Structure
The EXPMT 2000 is easily operated via a menu system utilizing an
eight key keypad located on the front of the instrument below the
display. Menus appear on the display above the four keys labeled ‘F1’,
‘F2’, ‘F3’, and ‘F4’. The four lower keys are labeled ‘←’, ‘ESC’, ‘PRN’
and ‘→’. Follow the instructions on the display and press the
appropriate key to use the instrument .
The ‘ESC’ key will change the display to the previous menu, and in
some situations it will confirm the menu selection. The ‘PRN’ key
activates an optional printer. The arrow keys, ‘←’ and ‘→’, move the
display forward or backward within a group of possible selections.
EXPMT 2000 User Manual 10

The following menu displays momentarily on Power up:
E X P MT 2 0 0 0
V e r s i o n X . R X *
* Current Software Version
Pacer Main Menu (A/V): (If the Input selector Switch is in A/V)
S e l e c t P a c e T y p e
P r e s s F 1 o r F 4
A t r i a l V e n t r i
F1 F2 F3 F4
Pacer Transthoracic Menu: (If the Input selector Switch is in TRANS)
X T h o r a c i c T y p e
S e l e c t m a n u f
< - P R N = H e a d e r - >
Z O L L H P M D E L I F E
F1 F2 F3 F4
2.5 Testing Transthoracic Pacers
The EXPMT 2000 will test all transthoracic pacemakers. The
brand of transthoracic pacemaker to be tested must be selected
through the menu system.
The EXPMT 2000 provides a choice of utilizing either a fixed 50
Ohm test load or a variable test load (using the plug in adapter) for
testing transthoracic pacemakers. Before performing any tests
connect the pacemaker to be tested directly to the EXPMT 2000 or
to the variable test load input adapter.
EXPMT 2000 User Manual 11

There are three levels of soft key menus in the Main Pacer Test
Menu.
Level 1: PPM Wdth Amp Ref
Level 2: Sens Imm AV-D Enr
Level 3: Type Aut Pri Aux
Press either the ‘←’ or ‘→’ key to move between the three soft key
menu Levels.
2.5.1 Selecting Pacemaker Manufacturer
A. Move the PACER INPUT SELECTOR switch on the side
to the TRANS. INPUT position.
B. Turn the EXPMT 2000 instrument on.
C. Press the ZOLL ‘F1’, HP ‘F2’, MDE ‘F3’, or LIFE ‘F4’ key.
D. Press either the ‘ ←’ or ‘ →’ key to move to the next menu
level and then press the ‘LF-12’ key to select LifePak 12
models or the ‘Others’ key to select all other
manufacturers.
E. A test function is selected using ‘F1’, ‘F2’, ‘F3’, or ‘F4’
keys.
F. Press either the ‘ ←’ or ‘ →’ key to reach Level 2 and
Level 3 menus.
2.5.2 Selecting 50 Ohm Fixed Test Load
A. Connect the transcutaneous pacer to the TRANS INPUT
fixed 50 OHMS input connectors (see the next section for
variable loads).
B. Turn the EXPMT 2000 on.
C. Turn the pacer on.
D. Select the desired pacer manufacturer.
E. Select the desired parameter to be measured (PPM,
Wdth, Amp, Ref) using ‘F1’, ‘F2’, ‘F3’, or ‘F4’ keys.
F. The EXPMT 2000 will now display the measured
parameters.
G. Press either the ‘ ←’ or ‘ →’ key to reach Level 2 and
Level 3 menus.
EXPMT 2000 User Manual 12

2.5.3 Selecting Variable Test Loads
A. Connect the variable test load adapter into the TRANS
input of the EXPMT 2000.
B. Connect the transcutaneous pacer to the input of EXPMT
Test Load Adapter.
C. Rotate the LOAD SELECTOR switch to the desired test
load for the measurement. 12 selections from 100 to
1000 Ohms.
D. Turn the EXPMT 2000 on.
E. Turn the pacer on.
F. Select the desired pacer manufacturer.
G. Select the desired parameter and begin measurements.
2.5.4 Measuring Pulse Parameters: Rate, Width, and
Amplitude
A. Press the PPM ‘F1’ key to measure the Rate.
B. Press the Wdth ‘F2’ key to measure the Width.
C. Press the Amp ‘F3’ key to measure the Amplitude.
Note: The EXPMT 2000 pacer will continuously measure the
parameters and update the display with the new values. Pressing
the ‘F1’,‘F2’, or ‘F3’ key will select the measurement priority. The
parameter selected will be updated first followed by the others.
2.5.5 Measuring Refractory Periods
A. Select Level 1 in the Pacer Test Main Menu.
B. Press the Ref ‘L4’ key for the refractory period measurement.
Refractory Menu: Ref ‘F4’ Key Pressed
R e f r a c t o r y T i m e
P a c e S e n s e
F1 F4
C. Press the ‘Pace’ F1 key for paced refractory period
measurement.
EXPMT 2000 User Manual 13

D. Press the ‘Sense’ F4 key for sensed refractory period
measurement.
E. STBY will flash on the top line of the display until the new
refractory period is measured.
Note: Some transthoracic pacemakers require a separate ECG
input during measurement of the refractory period. The 5 ECG
leads should be used for this purpose. A 100 mV, 40msec
square wave is output at the jacks and must be connected to
the EKG input leads of the pacemaker before the measurement
is made.
Note: The pacemaker pulse rate must be limited to a maximum of
180 PPM during the refractory period measurement. Each time
a function is selected the measurement will start
instantaneously and the STBY message is flashed until the
measurement is completed. Press the ‘ESC’ key at any time to
cancel the measurement or go back to the previous menu.
2.5.6 Demand Sensitivity Tests
A. Select Level 2 in the Main Pacer Test Menu.
B. Press the Sens ‘F1’ key for the demand sensitivity
measurement.
Sensitivity Menu: Sens ‘F1’ Key Pressed
S e n s t v t y = S T B Y
S q r 4 0 mS
F1 F2 F3 F4
C. The default waveform is a square wave with a sensitivity of 40
milliseconds.
D. Press the ‘F1’ key to select a different waveform - (Sqr) square,
(Tri) triangle, or (SSQ) waveform.
E. Press the ‘F2’ key to select a different sensitivity. 100, 200, 10,
25, and 40 msec are available.
F. ‘STBY’ will flash on the top line until a measurement is made.
EXPMT 2000 User Manual 14

During the sensitivity measurement, the pacemaker pulse rate
selection depends on the waveform and the width selected. For
certain widths and pacer rates, the waveform may fall within the
refractory period of the pacemaker and will not be sensed. This
may produce an erroneous reading. Hence, the maximum pacer
rate must be set using the table below.
Waveform Refractory Maximum
Width Period Pacer Rate
msec msec ppm
200 <300 110
<400 90
100 <300 140
<400 110
40/25/10 <250 180
<300 170
<350 140
<400 110
2.5.7 Immunity Tests
A. Press the ‘ESC’ key to return to the previous menu.
B. Select Level 2 in the Main Pacer Test Menu.
C. Press the Imm ‘F2’ key for the noise immunity test.
Immunity Menu: Imm ‘F2’ Key Pressed
N o i s e I m m u n i t y
6 0 H z 5 0 H z
F1 F2 F3 F4
D. Press the 60Hz ‘F1’ key for a sine wave of 60Hz
E. Press the 50Hz ‘F4’ key for a sine wave of 50Hz.
G. The peak amplitude is displayed from 0 to 10 mV and may be
increased or decreased. The default setting is 5.7 mV. Each
EXPMT 2000 User Manual 15

time the ‘Æ’ key is pressed the amplitude increases by 0.7 mV.
Each time the ‘Å’ key is pressed the amplitude decreases by 0.7
mV.
2.5.8 Measuring Energy
A. Press the ‘ESC’ key to return to the previous menu.
B. Press ‘→’ key to go to Pacer Test Menu soft key Level 2 where
energy may be selected.
C. Press ENR ‘F4’ key for Energy measurement.
D. Energy will be displayed on the top line of the display. Energy
will be measured continuously and updated while in the Energy
menu.
Energy Measurement Menu
E. Press the ‘ESC’ key to return to the previous (Level 2) menu.
T r n E n r g =
S e n s I m m A V D E n r
F1 F2 F3 F4
2.6 Testing External Transvenous Pacers (AV)
The EXPMT 2000 will test both atrial and ventricular transvenous
pacemakers. Before performing any tests connect the pacemaker to be
tested to either the ATR (Atrial) or VENT (Ventricular) A-V INPUT
connectors on the top of the instrument.
A. Move the Pacer Input Selector switch to the A.V. INPUT position.
B. Turn the EXPMT 2000 on.
C. Select the pacer type by pressing the Atrial ‘F1’ key or the
Ventricular ‘F2’ key.
D. Perform the measurements in section 2.6.1.
2.6.1 Measuring Pulse Parameters Rate, Width, and Amplitude
A. Press the PPM Key ‘F1’ to measure the Rate.
EXPMT 2000 User Manual 16

B. Press the Wdth Key ‘F2’ to measure the Width.
C. Press the Amp Key ‘F3’ to measure the Amplitude.
Note: The EXPMT 2000 pacer will continuously measure the
parameters and update the display with the new values. Press the
‘F1’, ‘F2’, or ‘F3’ key to select the measurement priority. The parameter
selected will be updated first followed by the others.
Rate Menu: PPM ‘F1’ Key Pressed
A t r R a t e =
A t r W d t h =
A t r A mp l =
P P M W d t h A mp R e f
F1 F2 F3 F4
2.6.2 Measuring Refractory Periods
A. Select Level 1 in Pacer Test Main Menu.
B. Press the Ref ‘L4’ key for the refractory period
measurement.
C. Press the Pace ‘F1’ key for paced refractory period
measurement.
D. Press the Sense ‘F4’ key for sensed refractory period
measurement.
Refractory Menu: ‘F4’ Key Pressed
R e f r a c t o r y T i m e
P a c e S e n s e
F1 F2 F3 F4
E. STBY will flash on the top line of the display until the new
refractory period is measured.
Note: The pacemaker pulse rate must be limited to a maximum of
180 PPM during the refractory period measurement. Each time a
function is selected the measurement will start immediately and
the STBY message will flash until the measurement is completed.
EXPMT 2000 User Manual 17

Press the ‘ESC’ key at any time to cancel a measurement or to go
back to a previous menu.
2.6.3 Demand Sensitivity Tests
A. Select Level 2 in the Main Pacer Test Menu.
B. Press the Sens ‘F1’ key for the demand sensitivity
measurement.
Sensitivity Menu: Sens ‘F1’ Key Pressed
S e n s t v t y = S T B Y
S q r 4 0 mS
F1 F2 F3 F4
A. The default waveform is a square wave with a sensitivity of 40
milliseconds.
B. Press the ‘F1’ key to select a different waveform: (Sqr) square,
(Tri) triangle, or (SSQ) waveform.
C. Press the ‘F2’ key to select a different sensitivity: 100, 200, 10,
25, and 40 msec are available.
D. STBY will flash on the top line until a measurement is made.
During the sensitivity measurement, the pacemaker pulse rate
selection depends on the waveform and the width selected. For
certain widths and pacer rates, the waveform may fall within the
refractory period of the pacemaker and will not be sensed. This
may produce an erroneous reading. Hence, the maximum pacer
rate must be set using the table below.
EXPMT 2000 User Manual 18

Waveform Refractory Maximum
Width Period Pacer Rate
msec msec ppm
200 <300 110
<400 90
100 <300 140
<400 110
40/25/10 <250 180
<300 170
<350 140
<400 110
2.6.4 Immunity Tests
A. Press the ‘ESC’ key to return to the Level 2 Main Pacer Test
Menu.
B. Press the Imm ‘F2’ key for the noise immunity test.
Immunity Menu: Imm ‘F2’ Key Pressed
N o i s e I m m u n i t y
6 0 H z 5 0 H z
F1 F2 F3 F4
C. Press the 60Hz ‘F1’ key for a sine wave of 60Hz
D. Press the 50Hz ‘F4’ key for a sine wave of 50Hz.
E. The peak amplitude is displayed from 0 to 101.9 mV and may be
increased or decreased. The default setting is 54.3 mV. Each
time the ‘Æ’ key is pressed the amplitude increases by 6.8 mV.
Each time the ‘Å’ key is pressed the amplitude decreases by 6.8
mV.
EXPMT 2000 User Manual 19

2.6.5 Measuring AV Interval
A. Press the ‘ESC’ key to return to the Level 2 Main Pacer Test
Menu.
B. Press the AV-D ‘F3’ key from the main menu for A-V Delay
measurements.
Note: The select switch must be in the A-V position and inputs
must be connected to both the ATR and VENT input jacks on
the EXPMT 2000. The amplitude values for both atrial and
ventricular output on the pacemaker must be set to 0.1mA or
higher.
AV Interval Menu: AV-D ‘F3’ Key Pressed
A V D e l a y =
S e n s I m m A V D E n r
F1 F2 F3 F4
2.6.6 Measuring Energy
A. Press the ‘ESC’ key to return to the Level 2 Main Pacer Test
Menu.
B. Press the Enr ‘F4’ key for Energy measurements.
Energy Measurement Menu: Enr ‘F4’ Key Pressed
A t r E n r g =
S e n s I m m A V D E n r
F1 F2 F3 F4
2.6.7 Pacemaker Type Selection
During measurements the atrial and ventricular inputs may be
changed or a different pacemaker may be tested. This is done
using the ‘Type’ function key in the Pacer Test Main Menu.
EXPMT 2000 User Manual 20