METRON PS-416M Troubleshooting guide

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PS-416M
User & Service Manual
PATIENT SIMULATOR

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Copyright ©1997 by METRON. All rights reserved.
METRON:
USA FRANCE NORWAY
1345 Monroe NW, Suite 255A 30, rue Paul Claudel Travbaneveien 1
Grand Rapids, MI 49505 91000 Evry, France N-7044 Trondheim, Norway
Phone: [phone] Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
E-mail: [email protected] E-mail: met[email protected] E-mail: [e-mail]
Disclaimer
METRON provides this publication as is without warranty of any kind, either express or implied, including but not
limited to the implied warranties of merchantability or fitness for any particular purpose. Further, METRON reserves the
right to revise this publication and to make changes from time to time to the content hereof, without obligation to MET-
RON or its local representatives to notify any person of such revision or changes. Some jurisdictions do not allow disclaim-
ers of expressed or implied warranties in certain transactions; therefore, this statement may not apply to you.
Limited Warranty
METRON warrants that the PS-416M Patient Simulator will substantially conform to published specifications and to the
documentation, provided that it is used for the purpose for which it was designed. METRON will, for a period of twelve (12)
months from date of purchase, replace or repair any defective analyzer, if the fault is due to a manufacturing defect. In no
event will METRON or its local representatives be liable for direct, indirect, special, incidental, or consequential damages
arising out of the use of or inability to use the PS-416M Patient Simulator, even if advised of the possibility of such dam-
ages. METRON or its local representatives are not responsible for any costs, loss of profits, loss of data, or claims by third
parties due to use of, or inability to use the PS-416M Patient Simulator. Neither METRON nor its local representatives will
accept, nor be bound by any other form of guarantee concerning the PS-416M Patient Simulator other than this guarantee.
Some jurisdictions do not allow disclaimers of expressed or implied warranties in certain transactions; therefore, this
statement may not apply to you.
Trademarks
Duracell is a registered trademark of Duracell, Inc.

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Table of Contents
MANUAL REVISION RECORD ...................................................................................................... 1-5
1. INTRODUCTION........................................................................................................................ 1-7
1.1 PS-416M Features ................................................................................................................. 1-7
1.2 Specifications......................................................................................................................... 1-7
1.3 General Information .............................................................................................................. 1-9
2. INSTALLATION ....................................................................................................................... 2-11
2.1 Receipt, Inspection and Return............................................................................................ 2-11
3. OPERATING PS-416M............................................................................................................. 3-13
3.1 Control Switches and Terminals.......................................................................................... 3-13
3.2 Use....................................................................................................................................... 3-14
4. CONTROL AND CALIBRATION........................................................................................... 4-17
4.1 Required Equipment............................................................................................................ 4-17
4.2 Preparation........................................................................................................................... 4-17
4.3 Function Testing.................................................................................................................. 4-17
5. COMPONENT FUNCTIONS AND PARTS ........................................................................... 5-21
5.1 Theory of Operation ............................................................................................................ 5-21
5.2 Functions Description.......................................................................................................... 5-21
5.3 Component Parts.................................................................................................................. 5-23
APPENDIX A: DIAGRAMS........................................................................................................... 5-27
Component Location .................................................................................................................... 5-29
Schematic Diagram Part 1 ........................................................................................................... 5-30
Schematic Diagram Part 2 ........................................................................................................... 5-31
APPENDIX B: ERROR REPORT FORM, PS-416M .................................................................. 5-33
APPENDIX C: SUGGESTION FORM, PS-416M........................................................................ 5-35

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Manual Revision Record
This record page is for recording revisions to your PS-416M User and Service Manual that have been pub-
lished by METRON or its authorized representavtives. We recommend that only the management or facil-
ity representative authorized to process changes and revisions to publications:
•make the pen changes or insert the revised pages;
•ensure that obsolete pages are withdrawn and either disposed of immediately, or marked as superseded
and placed in a superseded document file, and;
•enter the information below reflecting that the revisions have been entered.
Rev No Date Entered Reason Signature of Person Entering Change
0 - Initial Release

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1. Introduction
This chapter describes the METRON PS-416M Patient Simulator’s features
and specifications.
1.1 PS-416M Features
METRON’s PS-416M is a high performance simulator designed to simplify
patient monitor testing, and is designed to be used by trained service techni-
cians. It simulates electrocardiogram, respiration, dynamic blood pressure
and static temperature.
It offers three preprogrammed automatic test modes (ECG rate, ECG per-
formance rate, and BP level), plus a built-in ECG lead continuity test. Ar-
rhythmia selection includes two supraventricular, two-conduction; eight ven-
tricular, one paced; and one fetal/maternal ECG simulation.
1.2 Specifications
1. ECG General
Lead Configuration: 12-lead simulation derived from one resistively
divided analog signal.
RL, RA, LA, LL, V1-6
Output Impedance
Limb leads: 500 or 1000 ohms to RL
V Leads: 1000 ohms to RL
High Level Output: 0.5 V/mV of low level (Lead II)
2. Normal Sinus
Rates: 30, 60, 80, 120, 180, and 300 BPM
Rate Accuracy: ± 1% of selection
Amplitudes: 0.5mV, 1.0mV, 1.5mV and 2.0mV (Lead II)
Amplitude Accuracy: ± 5%. (Lead II 1.0mV)
Automatic ECG Rate Test
3. Manual ECG Performance Test
Square Wave: 2.0Hz 1.0 V p-p biphasic
DC pulse: 4.0 sec. 1.0 mV
Sine Waves: 0.1, 0.5, 10, 40, 50, 60 and 100 Hz
Triangle Wave: 2.0 Hz
Amplitude: 0.5mV, 1.0mV, 1.5mV and 2.0mV (Lead II)
Amplitude Accuracy: ± 5%. (Lead II 1.0mV)
4. Automatic ECG Performance Test

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Gain/Damping: 2 Hz square wave
Frequency Response
Low Frequency: 4 second DC pulse
Band Pass: 10 Hz sine
Monitor: -3dB point: 40 Hz sine
Power Line Notch Filter: 50 Hz sine
Linearity: 2 Hz triangle wave
5. ECG Lead Test
Display flashes if lead resistance is <3 kOhms (DC lead wire only)
6. Blood Pressure General
Input/Output Impedance: 300 Ohms
Exciter Voltage Range: 2 to 16 volts
Exciter Frequency Range: DC to 4000 Hz
Output Sensitivity: 5 or 40 µV/V/mmHg
Accuracy: ± 1% full scale 1 mmHg
Calibrated Rate: 80 BPM
7. Dynamic Blood Pressure Selections
Atmosphere: 0 mmHg
Arterial: 120/80 mmHg
Left Ventricle: 20/0 mmHg
Right Ventricle: 25/0 mmHg
Pulmonary Artery: 25/10 mmHg
Pulmonary Wedge: 10/2 mmHg
Static Levels: 0, 20, 40, 80, 100, 200, 250, 300 mmHg
8. Arrhythmia Selections
Atrial Fibrillation 1 & 2
Premature Atrial Contraction
Premature Ventricular Contraction (PVC)
Early PVC
R on T PVC
Multifocal PVCs
Bigeminy
Bigeminy Run of 5 PVCs
Ventricular Tachycardia
Ventricular Fibrillation
Second Degree Type 2
Right Bundle Branch Block
Asynchronous Pacemaker
Fetal/Maternal ECG

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9. Respiration
Normal Physiological Simulation
Baseline Impedances: 500 to 1000 Ohms
Impedance Variations: 0.1, 0.2, 0.5, 1.0, and 3.0 Ohms
Rates: 0 (Apnea), 15, 20, 30, 40, 60, 120 BPM
Output Configuration: Lead 1, 11, RL-LL
10. Temperature
30°C / 86°F, 37°C / 98.6°F, 40°C / 104°F
Compatible with YSI 400/700 series.
Accuracy: ± 0.25°C
1.3 General Information
Display/Control: 2-digit numeric display keys
5 switches for BP, respiration, temperature and
Power On/Off
ECG Output Connectors
High Level: Standard phone jack
Low level: 10 AHA color-coded standard safety banana con-
nectors with detachable banana to snap adapter.
Power: 9 V alkaline battery or battery eliminator
Case: High impact plastic
Weight: 0.5 kg / 1.1 lbs.
Dimensions: Height: 47 mm / 1.8 in.
Width: 138 mm / 5.4 in.
Length: 190 mm / 7.5 in.
Standard Accessories: PS-416M Patient Simulator (P.N. 17020)
110 V or 220 V AC Adapter (P.N. 17021)
Carrying Case (P.N. 17022)
Snap-to-Banana Adapters (10pk) (P.N. 17023)
User and Service Manual PS-416M (P.N. 17025)
Optional Accessories: Unterminated or prewired BP Cable (P.N. 17440)
Unterminated or prewired 400/700
YSI-series Temperature Cable (P.N. 17443)

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2. Installation
This chapter explains unpacking, receipt inspection and claims, and the gen-
eral procedures for PS-416M setup.
2.1 Receipt, Inspection and Re-
turn
1. Inspect the outer box for damage.
2. Carefully unpack all items from the box and check to see that you have
the following items:
•PS 416M Patient Simulator (P.N. 17020)
•Battery Eliminator (P.N. 17021)
•Carrying Case (P.N. 17022)
•10 Pack, Snap-to-Banana Adapters (P.N. 17023)
•PS-416M User and Service Manual (P.N. 17025)
3. If you note physical damage, or if the unit fails to function according to
specification, inform the supplier immediately. When METRON AS or
the company’s representative, is informed, measures will be taken to ei-
ther repair the unit or dispatch a replacement. The customer will not
have to wait for a claim to be investigated by the supplier. The customer
should place a new purchase order to ensure delivery.
4. When returning an instrument to METRON AS, or the company repre-
sentative, fill out the address label, describe what is wrong with the in-
strument, and provide the model and serial numbers. If possible, use the
original packaging material for return shipping. Otherwise, repack the
unit using:
•a reinforced cardboard box, strong enough to carry the weight of the
unit.
•at least 5 cm of shock-absorbing material around the unit.
•nonabrasive dust-free material for the other parts.
Repack the unit in a manner to ensure that it cannot shift in the box dur-
ing shipment.
METRON’s product warranty is on page ii of this manual. The warranty
does not cover freight charges. C.O.D. will not be accepted without authori-
zation from METRON A.S or its representative.

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3. Operating PS-416M
This chapter explains the PS-416M operating controls and terminals.
3.1 Control Switches and Termi-
nals
Front Panel
1. Power Switch Turns the power on and off.
2. LCD Display Keys Sets LCD display waveform values. Use the right
key to enter units, and the left key to enter tens.
Press the top of the key to increase the value.
Press the bottom of the key to decrease the value.
3. Enter Pressing this stores newly specified waveform
value set by the keys.
4. High Level ECG
Connector
Standard phone jack connecting the high level
ECG output signal.
5. BASE 6(Baseline
Impedance) Slide
Switch
Sets the impedance between each lead. The respi-
ration parameter (breathing rate/min) is selected
and stored in the display.
6. LEAD Slide Switch Determines which lead is in use. The position of

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the switch must correspond to the type of patient
monitor in use.
7. Blood Pressure
Slide Switch
(µV/V/mmHg)
Sets the sensitivity to match the input sensitivity of
the patient monitor (either 5 or 40 )V/V/mmHg).
The waveform is selected and stored in the display.
8. Temperature Slide
Switch
Sets the temperature to be used.
9. Lead Test
Terminals
For testing ECG leads. Connect each end of the
lead to one of the two Lead Test Terminals. The
LCD display will flash if the lead is OK.
Rear Panel
10. Low level ECG
Connectors
10 AHA color-coded 4mm safety terminals. Snap-
to-banana adapters for the terminals are supplied
with the PS-416M.
11. Battery Eliminator Micro jack for connecting the 9V plug-in power
supply transformer for use in operating the unit
from any standard electrical outlet.
3.2 Use
1. Power. The power switch is the slide-switch situated at the bottom
right-hand corner of the panel. The instrument should be switched off
when not in use, to save the battery. A flashing display indicates low
battery power.
2. Battery Replacement The battery is situated in the base of the instru-
ment. Use a 9 volt alkaline battery (Duracell®MN1604 or equivalent).
3. Top Panel Controls and Connectors
Display and Keyboard
The PS-416M has a two-digit display. To the left of the LCD display is a
listing of available waveforms and two-digit codes. Access a waveform
by displaying its corresponding two-digit code. Use the two keys below
the LCD display to enter units and tens (the right key is for units; the left
is for tens). Pressing the top of the keys increases the values, while
pressing the bottom of the keys decreases the values. The selected wave-
form is stored by pressing Enter. Repeat the above procedure if you de-
NOTE
Use only METRON’s AC
Adapter plug-in power sup-
ply transformer supplied with
the unit.
NOTE
Do not use mercury, air or
carbon-zinc batteries.

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sire to store several waveforms. By using the left-hand key (tens),
you can switch between waveforms stored in the instrument.
When the apparatus is switched on, the display will show the program
version for a short period before switching into standard mode.
Manual ECG, High Level Output
The high level ECG output signal is a Lead II waveform with 0.5V/mV
of low level Lead II. The high level ECG connection (standard phone
jack) is situated in the upper left-hand corner of the instrument.
Respiration
The respiration signal is transferred via ECG connections. The position
of the LEAD switch determines which lead is in use. The position of the
switch must correspond to the type of patient monitor being used. The
BASE (baseline impedance) switch sets the impedance between each
lead. The respiration parameter (breathing rate/min.) is selected and
stored in the display.
Blood Pressure
The sensitivity switch (pVN/mmHg) must be set to match the input sen-
sitivity of the patient monitor (either 5 or 40 pVN/ mmHg). The wave-
form is selected and stored in the display. Prewired cables (P.N. 17440)
and diagrams for connecting various types of monitors are available
from Metron AS. Unterminated cables are also available.
CABLE CONNECTION MATRIX
BLOOD PRESSURE CABLE
DIN Plug Pin No. Color Function
4 Black Output (+)
1 Red Output (-)
3 White Exciter (+)
5 Green Exciter (-)
2 Blue ECG ref
Temperature
(See below). The type of cable used determines the type of probe simu-
lated, either 400 or 700 series YSI probes. Temperature is selected by a
slide switch. Prewired 400/700 YSI-series temperature cables to connect
to the temperature connector are available from Metron AS (P.N.
17443). Unterminated cables are also available.
CABLE CONNECTION MATRIX
UNIVERSAL TEMPERATURE CABLES
DIN Plug Pin No. Color
OUTPUT 1
400 Series
OUTPUT 2
700 Series
1 Green Tip No conn.
2 Red No conn. Tip
3 White No conn. Ring
4 Black Barrel Barrel
NOTE
When the instrument is
switched off, all stored
information will be can-
celed.

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Lead Testing
ECG leads should be tested regularly. Connect each end of a lead to one
of the two Lead Test terminals. The display will flash if the lead is OK.
4. Rear Panel Connectors
Low-Level ECG Leads
There are ten AHA color-coded 4mm safety terminals located on the rear
panel. Snap-to-banana adapters for the terminals are supplied with the
PS-416M (P.N. 17023).
Battery Eliminator
METRON’s AC Adapter plug-in power supply transformer allows you
to use the PS-416M anywhere a standard electrical outlet is available. To
attach the AC Adapter insert the adapter’s small connector into the micro
jack labeled “Batt. Elim. 9V DC” on the right rear of the unit. Plug the
large connector into the nearest standard electrical outlet.
NOTE
Remove the batteries and
disconnect the AC Adapter
if you do not intend to use
the PS-416M for an ex-
tended period of time.

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4. Control and Calibration
This chapter explains PS-416M maintenance procedures, including testing
and calibration.
4.1 Required Equipment
•Digital multimeter, 10pV resolution, 0.1% accuracy.
•Frequency counter
•Oscilloscope
•Power supply variable V/A
4.2 Preparation
1. Set the switches on PS-416M as follows:
Power: Off
Base: 1K
Lead: II
Sensitivity: 40
Temperature: 30ºC
2. Connect a current to the battery contact. Adjust the voltage from 9V ±
0.2V with a power limitation of 70mA ±20mA.
4.3 Function Testing
1. Turn the Power Switch on. The LCD display will briefly show the soft-
ware version number, before showing the active ECG function (03).
Press the Key Switches beneath the display and check that the number
displayed increases or decreases with each press. Press Enter and check
that the display flashes once.
2. Measure the current consumption from the power supply.
Requirement: 19mA
±2mA.
3. Measure the operating voltage in PS-416M with the multimeter. The fol-
lowing values are acceptable:
Testpoints
- +
Value Maximum
Deviation
TP10 - TP4 +5V ±0.2V
TP10 - TP5 -5V ±0.4V
TP10 - TP9 +1.24V ±0.03V
TP14 - TP11 +7V +6 - 1V
TP14 - TP12 -7V +1 - 6V
TP14 - TP13 +5V ±0.2V

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4. Connect the frequency meter to TP1 and read the frequency. Require-
ment: 2MHz ±0.002MHz.
5. Connect the frequency meter to TP2 and read the frequency. Require-
ment: 100Hz ±lHz.
6. Short circuit the 'Lead Test' terminals and check that the display is flash-
ing. Remove the short circuit.
7. Slowly reduce the voltage from the power supply until the display just
begins to flash. Measure the operating voltage with the multimeter. Re-
quirement: 6.2V ±0.3V. Measure also the voltage between TP-13 and
TP-14. If the voltage is lower than 4.8V, adjust TR1 until the voltage is
4.8V. Turn the current up again to 9V.
8. Connect the oscilloscope to the High Level ECG contact and check that
there is a 80BPM ECG signal when function 03 is activated. The R-
impulse will have an amplitude of approximately 0.5V.
9. Set the power switch to Off. Measure the resistance from the RL output
to the RA, LA and LL outputs. To measure LA, the Lead switch must be
in position II. To measure LL, the Lead switch must be in position I. Re-
quirement: 1000 ohms ±30 ohms.
10. Repeat test 9, only this time with Base-ohms in position 500. To measure
LA, the Lead switch must be in position II. To measure LL, the Lead
switch must be in position I.
Requirement: 500 ohms ±15 ohms.
11. Measure the resistance from the V1 output to the V2,V3,V4,V5 and V6
outputs.
Requirement: 1000 ohms ±30 ohms.
12. Measure the resistance between TP10 and TP14 with the multimeter.
Requirement: >10 Mohms.
13. Measure the resistance between the connections on the temperature con-
tact. The following table shows the required parameters:
TEMP 30°C
Min. - Max.
TEMP 37°C
Min. - Max.
TEMP 40°C
Min. - Max.
Pin4-Pin 1 1k8-1k83 1k34-1k37 1k19-1k21
Pin4-Pin 2 4k79-4k88 3k57-3k65 3k16-3k23
Pin4-Pin 3 24k0-24k5 18k0-18k4 16k0-16k3
14. Set the power switch in position while momentarily holding down En-
ter. The display will only show 0 in the right-hand column (the left col-
umn will be blank). PS-416M is now in
test/calibration mode. Connect a 10V ±10mV voltage to J9 (the BP con-
tact), pins 3 and 5. Minus to pin 5. Check the voltage after connecting
the power.

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15. Measure and note the voltage between TP14 and TP16 (typ. <1mV). Set
the display at 1 and press Enter. Measure the voltage once more and
adjust P5 until the difference between the voltages is 120mV ±200)V.
16. Repeat the previous instruction, only this time with the Sensitivity
switch set to position 5. Check that the voltage between TP14 and TP16
is 15mV ±40)V. If necessary, adjust P5 and repeat operation 15.
17. Set the display at 2 and press Enter. Measure the resistance between
TP7 and TP10 with the multimeter. Adjust P1 until the voltage is half
the reference voltage between TP10 and TP9 (nom. -0.62v) ±lmV.
18. Measure the voltage between TP6 and TP10 with the multimeter. Adjust
P2 until the voltage is half the reference current between TP10 and TP9
(nom. 0.62v) +lmV.
19. Measure and note the voltage between LL(+) and RA(-) (typ. <
100)V). Set the display at 3 and press Enter. Measure the voltage once
more and adjust P4 until the difference between the voltages is 2mV ±
20)V. Measure the voltages between the outputs and check that they
are within the limits in the following table:
Connectors Low limit Nom. Value High limit
RL - RA 1.20 mV 1.35 mV 1.50 mV
RL-LA 2.40mV 2.65mV 2.90mV
RL-LL 3.00 mV 3.35 mV 3.70 mV
RL-V1 2.70 mV 3.02 mV 3.30 mV
RL-V2 3.30 mV 3.72 mV 4.10 mV
RL-V3 4.00 mV 4.49 mV 5.00 mV
RL-V4 4.50 mV 5.06 mV 5.60 mV
RL-V5 4.00 mV 4.49 mV 5.00 mV
RL-V6 3.30 mV 3.72 mV 4.10 mV
20. Set the display at 4. Set the Base-ohms switch to 500 and the Lead
switch to II. Measure the resistance between LL and RA. Move between
test functions 4 and 5 on the display (remember to press Enter), and ad-
just P3 until the difference is 3 ohms ±0.03 ohms.

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