Abbott Merlin PSA EX3100 Reference guide

Merlin™ PSA
Pacing System Analyzer
Model EX3100
Help Manual

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2021 St. Jude Medical, LLC. All Rights Reserved.

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Contents
Introduction ..............................................................................................................1
System Description............................................................................................................1
Operator Profile .................................................................................................................1
Indications for Use ............................................................................................................1
Intended Use ....................................................................................................................2
Contraindications...............................................................................................................2
Warnings ..........................................................................................................................2
Precautions.......................................................................................................................3
Adverse Events..................................................................................................................4
Tools Menu............................................................................................................... 1
? Button.................................................................................................................... 1
Tools......................................................................................................................... 1
Preferences ..............................................................................................................1
Audio Preferences.............................................................................................................2
Print Screen..............................................................................................................2
Export Screen ...........................................................................................................2
Rhythm Display......................................................................................................... 2
Rhythm Display.................................................................................................................3
ECG..................................................................................................................................3
Markers ............................................................................................................................4
EGM .................................................................................................................................6
Current of Injury ................................................................................................................6
Waveform Control..............................................................................................................7
Rhythm Display Setup Instructions .....................................................................................7
Adjust Display ...................................................................................................................8
Freeze Capture..................................................................................................................8
Merlin™ PSA Session Information .............................................................................9
Merlin™ PSA Setup Information.........................................................................................9
Insert the PSA in the PSA Case ..........................................................................................9
Connect the Leads...........................................................................................................12
Start a Merlin™ PSA Session ...........................................................................................14
End a Merlin™ PSA Session ............................................................................................15
Suspend the Merlin™ PSA Session ..................................................................................15
Lead Tests .............................................................................................................. 15
Enable/Disable Pacing .....................................................................................................16
Intrinsic Signal Amplitude and Slew Rate Measurements ...................................................17
Lead Impedance Measurements ......................................................................................17
Capture Test ...................................................................................................................18
Phrenic Nerve Stimulation Check .....................................................................................19
Annotate Test Results......................................................................................................19
Additional Parameters......................................................................................................20
Ventricular Sensing Buttons .............................................................................................20
Burst Pacing ........................................................................................................... 20
Burst Pacing Instructions.................................................................................................21

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Parameters .............................................................................................................21
AV Delay .........................................................................................................................22
Base Rate .......................................................................................................................22
Interventricular Delay.......................................................................................................22
Low Frequency Attenuation..............................................................................................22
Max Track Rate ...............................................................................................................22
Mode ..............................................................................................................................23
Pacing ............................................................................................................................23
Pulse Amplitude ..............................................................................................................23
Pulse Width.....................................................................................................................23
Refractory .......................................................................................................................23
S1S1...............................................................................................................................23
Sensitivity ........................................................................................................................24
V. Pacing.........................................................................................................................24
V. Sensing .......................................................................................................................24
Ventricular Support Rate (VOO) ........................................................................................24
Mode Descriptions ..................................................................................................24
DDD................................................................................................................................25
DDI.................................................................................................................................25
DOO................................................................................................................................26
VDD................................................................................................................................27
VVI..................................................................................................................................28
VOO................................................................................................................................29
AAI .................................................................................................................................29
ODO................................................................................................................................30
Additional Information .............................................................................................30
Technical Support ...........................................................................................................31
Main Programming Window .............................................................................................31
Patient Data ....................................................................................................................31
Patient Data: Lead Information .........................................................................................32
On-Screen Keyboard........................................................................................................32
Device Parameters and Settings Selection .........................................................................32
Print Menu......................................................................................................................32
Safe Pacing.....................................................................................................................33
Emergency VVI Pacing.....................................................................................................33
Parameter Settings and Availability...........................................................................34
Technical Data ........................................................................................................35
Symbols..................................................................................................................52

1
Introduction
Contents:
System Description (page 1)
Operator Profile (page 1)
Indications for Use (page 1)
Intended Use (page 2)
Contraindications (page 2)
Warnings (page 2)
Precautions (page 3)
Adverse Events (page 4)
System Description
The Merlin™ Pacing System Analyzer (PSA) Model EX3100 system provides you with the ability to
assess the electrical performance of a lead system during pulse generator implantation or invasive
lead-system troubleshooting. The Merlin PSA system uses the St. Jude Medical™ Merlin™
Patient Care System (PCS).
In addition to the Merlin PCS, the Merlin PSA system consists of:
a sterilizable patient cable
The Merlin PSA Patient Cable Model EX3150 connects the Merlin PSA with one to three
implanted leads.
patient-cable adapters
The Merlin PSA Cable Adapter Model EX3170 and the Merlin PSA "M" Adapter
Model EX3180 connect the Merlin PSA to commonly used PSA patient cables (see Connect
the Leads to the Merlin™ PSA). The PSA patient cables are then connected to the implanted
leads.
For information on the Merlin PCS, refer to the Merlin PCS Model 3650 or Merlin 2 PCS MER3700
User's Manual. For technical data and other information on the Merlin PSA and accessories, refer
to Technical Data.
NOTE:
Only persons properly trained to operate the Merlin PSA should do so.
If the user connects both the Merlin PSA Model EX3100 and the PSA Wand
Model 3150 to the Merlin PCS, the programmer only enables the Merlin PSA
Model EX3100.
Refer to the Merlin PCS Model 3650 or Merlin 2 PCS Model MER3700 User's Manual
for Merlin PSA installation instructions.
Operator Profile
The intended operators of the Merlin™ PSA system include trained Abbott Medical employees
and clinical personnel trained in pacing and electrophysiology, such as nurses, technicians, or
physicians.
Indications for Use
The Merlin™ Pacing System Analyzer (PSA) is indicated for use at the time of surgery in patients

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with bradyarrhythmias, tachyarrhythmias, and/or heart failure undergoing implantation or lead
revision of a pacemaker, implantable cardioverter defibrillator, or cardiac resynchronization
therapy system.
Intended Use
The Merlin™ PSA is intended to assess the pacing and sensing performance of the lead system
prior to pulse generator implantation, or during invasive lead system troubleshooting.
The Merlin PSA Patient Cable EX3150 is a three-channel resterilizable patient cable intended to
connect the Merlin PSA to as many as three IS-1, DF-1, or DF4 leads.
The Merlin PSA Patient Cable Adapter EX3170 is a three-channel adapter intended to connect the
Merlin PSA to as many as three disposable patient cables. The EX3170 Cable Adapter can
connect to the Model 4051L disposable patient cable for IS-1 leads or to the Model 4161
disposable patient cable for DF4 leads. The opposite ends of the disposable patient cables
connect to implantable pacing leads.
The Merlin PSA "M" Adapter Model EX3180 is intended to connect the Merlin PSA to the two-
channel Medtronic Model 2292 re-sterilizable patient cable. The opposite end of the Medtronic
Model 2292 cable connects to implantable pacing leads.1
Following use, the patient cables must either be disposed or re-sterilized, depending on the
requirements of the cable.
Only use the Merlin PSA with the Merlin PCS.
Contraindications
There are no contraindications to the use of a lead-analysis device. The patient's age and medical
condition, however, may dictate the pacing modes and lead assessment activities appropriate for
the patient.
The Merlin™ PSA is not intended for use as a temporary pacemaker or for life sustaining pacing
support.
The Merlin PSA is not intended for diagnostic purposes.
Warnings
Line-powered Equipment. An implanted lead or a lead with an extension cable constitutes a
direct, low-resistance current pathway to the myocardium. Due to the danger of tachyarrhythmias
resulting from alternating current leakage, extreme caution must be taken to only use
line-powered equipment according to its intended use as properly grounded line-powered Class I
equipment used on or in the vicinity of the patient.
Electrosurgical Cautery. Electrosurgical cautery could induce ventricular arrhythmias and/or
fibrillation, or may cause device malfunction or damage. If electrocautery is necessary, keep the
current path and groundplate as far away from the leads as possible.
Burst Pacing. Use of atrial or ventricular burst pacing may result in ventricular tachycardia or
fibrillation. Defibrillation equipment should be readily available during the PSA session.
Handling Inserted Leads. Do not touch the terminal pins or exposed metal when handling
inserted leads. Do not allow the terminal pins or exposed metal to unintentionally contact
electrically conductive or wet surfaces.
Unconnected Atrial Leads. Do not operate the Merlin™ PSA in the DDD or VDD pacing mode
with only the ventricular pacing lead connected. Interference detected at the unconnected atrial
1The Medtronic Model 2292 re-sterilizable patient cable has an embedded resistor connected via connector pins P3 and P5 that
enables Medtronic equipment to distinguish between different supported PSA cables. However, pins P3 and P5 are not connected
to the Merlin PSA which does not support this functionality.

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input of the Merlin PSA can result in false sensing and can drive the ventricular pacing rate to the
Max Track Rate setting.
Asystole. During threshold tests, asystole may result due to loss of capture.
Electromagnetic Interference (EMI). At high sensitivity (low numerical settings) and in the
presence of excessive levels of interference, the Merlin PSA may inhibit completely or revert to
asynchronous operation, pacing at the Base Rate. Additional sources of strong EMI that can
temporarily affect the operation of the Merlin PSA include the following:
Electrosurgical equipment
Diathermy equipment
Some medical telemetry equipment, when operated within one meter of the Merlin PSA
Communication transmitters such as cellular phones and "walkie talkies".
Move the source of EMI as far from the Merlin PSA as possible.
Asynchronous Pacing. During asynchronous pacing operation, pacing stimuli may be
inadvertently delivered within the vulnerable period of the T-wave. This may be hazardous to
patients with acute myocardial infarction or who are otherwise predisposed to arrhythmias.
Precautions
Temporary Pacing. Do not use the Merlin™ PSA as a temporary pacemaker. It should not be
used to provide extended external pacing in situations where the patient is left unattended.
Testing has not been performed to support this function.
Power Loss. In the event of a power loss to the programmer, the Merlin PSA continues to pace in
the safe pacing mode for the length of backup battery life. Do not use the Merlin PSA as an
external temporary pacemaker. Connect the patient to an external temporary pacemaker as soon
as possible. For more information, see Safe Pacing.
High Output and Maximum Sensitivity. In the presence of large depolarization potentials or
large output pulses, use of high sensitivity settings (low numerical settings) may allow potentials to
inappropriately inhibit (or trigger) the output.
Connecting the Lead System. Connect the Merlin PSA to the Merlin PCS or Merlin 2 PCS. (For
installation instructions, see the Merlin PCS Model 3650 User's Manual or Merlin 2 PCS Manual)
Then connect the sterile patient cables (and accessories, as necessary) to the Merlin PSA before
connecting the lead to the sterile patient cable.
Electrostatic Discharge (ESD). Pacing leads provide a low-impedance pathway to the heart.
Therefore, discharge any static electricity prior to touching the patient, the cables, or the leads.
Termination of Pacing. Abrupt termination of pacing stimuli may result in intervals of asystole
before an intrinsic rhythm is reestablished. Prior to terminating pacing, set the pacing mode to a
demand mode and then gradually reduce the pacing rate below the patient's intrinsic rate. Once a
spontaneous rhythm is established, you can turn off pacing.
Defibrillation/Cardioversion. The Merlin PSA may be damaged by defibrillation shocks when it is
connected to an implanted lead system. Test the Merlin PSA after it has been exposed to such
charges by launching the PSA application and verifying that the Merlin PSA is functional.
Whenever possible, for the safety of the patient, disconnect the Merlin PSA from the lead system
before defibrillation or cardioversion. After a typical defibrillation shock, the Merlin PSA will
recover is less than five seconds.
Environmental Precautions. The Merlin PSA has been carefully designed and tested to ensure
reliability during normal use. However, electronic devices are susceptible to many environmental
stresses. Take precautions to avoid damaging the device, including (but not limited to) the
following examples:

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do not expose the Merlin PSA to extreme temperatures and/or humidity as that may result in
inaccurate measurements
do not expose the Merlin PSA to mechanical shock as it may damage the Merlin PSA and
result in unreliable measurements
do not store the Merlin PSA near magnets or magnetic-field-inducing coils as it may shorten
its lifetime.
Other environmental factors may affect proper performance of the device in the hospital setting.
Use of appropriate environmental health and safety practices helps prevent environmental
damage to the device.
Heart-Rate Monitoring. Monitor the patient's heart rate with an ECG monitor while using the
Merlin PSA.
Liquid Immersion. Do not immerse the Merlin PSA in liquid or damage will result.
Adverse Events
Potential adverse events include:
Prolonged surgery
Arrhythmia
Discomfort
Additional surgical procedure
Infection

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Tools Menu
Contents:
? Button (page 1) (Help)
Tools (page 1)
Preferences (page 1)
Customer Support. Provides contact information for Technical Support representatives. See
Technical Support (page 31).
Print Screen (page 2)
Export Screen (page 2)
? Button
The ? button opens a window that provides context-sensitive help. You can also get help if you
select Tools > Educational Materials > Help.
Accessed From: Help button
Tools
The Tools menu provides access to a number of programmer tools, including:
PSA. Opens the PSA application (inactive during the PSA session).
Session Records: Opens archived data (inactive during the PSA session).
Educational Materials:
-Help. Opens links for on-line Help for all supported devices.
-Demos. Opens device demonstrations (inactive during the PSA session).
Maintenance. Opens utilities for programmer maintenance (for use by Abbott Medical
personnel only).
Clinical Studies. Opens information for studies (for use by Abbott Medical personnel only;
inactive during the PSA session).
Preferences (page 1). Opens the Merlin™ PCS or Merlin™ 2 PCS settings.
Customer Support. See Technical Support (page 31).
Print Screen (page 2).
Export Screen (page 2). Exports an image to a USB flash drive.
Accessed From: Tools menu
Preferences
The Preferences window sets the following for the programmer:
Date (inactive during the PSA session)
Time (inactive during the PSA session)
Language for Display and Help (inactive during the PSA session)
Date, Time, and Number Formats (inactive during the PSA session)
ECG Notch Filter Frequency . The ECG Notch Filter Frequency reduces ECG interference
from the programmer's AC power line. Check with your local authorities for your power line

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frequency.
Audio Preferences (page 2)
Printer Preferences. (inactive during the PSA session)2
Accessed From: Tools menu > Preferences button
NOTE: It is important to set an accurate date and time because the device's functions use
the date and time from the programmer. You must exit the PSA session to set the date and
time from the Tools menu.
Audio Preferences
The Audio Preferences window contains two panels:
General Audio. Select the On button to allow audio cues for programmer activity. You can
also select a volume level. The Off button turns all sounds off (except Charging Audio).
Charging Audio. Select the On button for an audio cue when the capacitors charge during a
programming session. An audio cue is always emitted during charging for an Emergency
Shock, regardless of the Charging Audio setting.
Accessed From: Tools menu > Preferences button > Audio tab
Print Screen
The Print Screen button prints an image of the current screen to a PDF.
For more information on printing, see Print Menu (page 32).
Accessed From: Tools menu > Print Screen button
Export Screen
The Export Screen button opens a window which allows you to save the current screen as an
electronic (.png) file and send the file to any storage device (flash drive) connected to one of the
programmer's USB ports. The Merlin™ PCS and Merlin™ 2 PCS detect all connected devices
and asks you to select the device to receive the data.
Accessed From: Tools menu > Export Screen button
Rhythm Display
Contents:
Rhythm Display (page 3)
ECG (page 3)
Markers (page 4)
EGM (page 6)
Waveform Control (page 7)
Rhythm Display Setup Instructions (page 7)
Adjust Display (page 8)
ECG Configuration (page 8)
2The reports printed during a PSA session are always saved as a PDF file and may be printed to an external printer.

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EGM Configuration (page 8)
Freeze Capture (page 8)
Rhythm Display
The Rhythm Display, seen on the Main Programming Window (page 31), can show up to five
concurrent waveforms (or channels) that can be individually configured and adjusted. You can
also freeze the display or print it in real time.
Three types of waveforms can be shown in the Rhythm Display:
ECG (electrocardiogram) (page 3)
Markers (page 4)
EGM (intracardiac electrogram) (page 6)
The controls for the Rhythm Display include the:

Channel Control
buttons. Indicates the current
waveform for each channel. Select this button to
show the Waveform Control buttons or the Marker
Control
buttons
.

Waveform Control
(page 7) buttons. Select the
Channel Control buttons on the left side of the
waveform to show the Waveform Control buttons.
Top view shows buttons for ECG. Bottom two views
show buttons for EGM. See also Current of Injury
(page 6).

Marker Control
buttons. Select the Channel
Control buttons on the left side of the Marker
Control buttons. Select the desired configuration or
select the "?" button to show help for Markers
(page 4).

Adjust Display
(page 8) button

Freeze Capture
(page 8) button
See also:
Rhythm Display Setup Instructions (page 7)
ECG
The Rhythm Display shows up to five ECG waveforms simultaneously from seven possible ECG
vectors. There are two ways to change the ECG display:
Adjust Display (page 8) button. Selects the waveform source and configuration and the ECG
filter.
Waveform Control (page 7) buttons, which set the gain and the waveform source.
For an example of a typical ECG setup,refer to the Merlin™ PCS Model 3650 User's Manual or

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the Merlin™ 2 PCS Model MER3700 User's Manual..
For more information, see ECG Configuration (page 8).
Markers
Markers are symbols that represent paced and sensed events, intervals, and refractory periods.
You can choose markers as one of the five channels. Markers can be configured either as:
Basic. Basic Event Markers (page 4) appear along a time line.
Full. In addition to the Basic Event Markers, the Interval and Refractory Markers (Full
Markers) (page 5) appear.
The following markers always appear in both the Basic and Full marker configurations:
Special Event Markers (page 5)
Full-Display Markers (page 6)
Waveform Channel Markers (page 6)
There are two ways to change the marker configuration:
Select the Adjust Display (page 8) button and select the desired configuration.
Select the marker's Waveform Control (page 7) button on the left of the Rhythm Display and
select the desired configuration.
The following markers always appear in both the Basic and Full marker configurations:
Basic Event Markers
Table 1. Basic event markers
Marker
Description
Example
Atrial event sensed in refractory
period
Table 2.
AS Atrial sensed event
For CRT-Ds and CRT-Ps, when the V.
Pacing (page 24) or V. Sensing (page 24)
parameter is set to:

RV Only.
The VP or VS marker has a
right-pointing tick mark.

LV Only.
The VP or VS marker has a
left-pointing tick mark.
See below for
RV->LV, LV->RV
, and
Simultaneous
.
AP Atrial paced event
VS Ventricular sensed event
VP Ventricular paced event

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Ventricular sensed event within the
refactory period
Table 3.
BP Biventricular paced event For CRT-Ds and CRT-Ps, when the V.
Pacing parameter is set to:

Simultaneous
;
RV->LV
with a 10 ms
delay. The BP marker points down.

RV->LV
with a 15 ms or greater delay.
The BP marker points right.

LV->RV
with a 15 ms or greater delay.
The BP marker points left.
Table 4.
Interval and Refractory Markers (Full Markers)
Interval and refractory markers are shown in the following diagram.
Figure 1. Interval and refractory markers (full markers)
Special Event Markers
Table 5. Special event markers
Marker
Description
Example
--> A-Noise or --
> V-Noise
Entry into noise
reversion mode
A-noise or V-
Noise
Continuation of noise
reversion mode
<-- A-Noise or <--
V-Noise
Exit from noise
reversion mode
Burst--- Burst stimulation

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Full-Display Markers
Table 6. Full-display markers
Marker
Description
Example
Pulse Amplitude Updated Pulse
Amplitude setting
A. Burst or RV
Burst Started
Starting burst
stimulation delivery
A. Burst or RV
Burst Ended
Ending burst
stimulation delivery
Waveform Channel Markers
Table 7. Waveform channel markers
Marker
Description
Example
Signal Amplitude
Measurement
Intrinsic signal amplitude
measurements above the
associated complex
Impedance
Measurement
Lead impedance
measurement above the
associated complex
EGM
EGMs (intracardiac electrograms) show the sensed electrical activity of the heart. The shape and
size of the waveform depend on the available EGM Configuration (page 8) and the Gain setting.
The configurations available are Unfiltered or Sense Amp (narrow band filtered data). The Sense
Amp filtering characteristics of the Merlin™ PSA are designed to match those of Abbott Medical
pulse generators. The default configuration is Unfiltered, and once it's changed, the new
configuration is saved for future sessions.
Select the Adjust Display (page 8) button to select the waveform source and configuration, and
also the sweep speed and the ECG Filter.
Current of Injury
The Current of Injury view shows an unfiltered view of the EGM and an amplitude value measured
from peak-to-peak of the waveform. (The filtered EGM view measures the Sense Amp waveform
from baseline-to-peak.) The peak-to-peak amplitude of the unfiltered EGM is shown in the upper
left corner of the Current of Injury view. The Current of Injury view updates with every sensed
beat.
Use the Plus (+) and Minus (-) buttons to manually set the gain. AutoGain is not available in the
Current of Injury view.

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Select the Current of Injury button to return to the Rhythm Display.
Accessed From: Rhythm Display > Channel Control button
Waveform Control
The Waveform Control buttons on the left side of the Rhythm Display control the waveform's
appearance. To open the controls, select one of the buttons. The buttons shown depend on the
selected Source for that channel.
Figure 2. Waveform control buttons
1. Current of Injury (page 6) button (EGM only). Toggles from the filtered baseline-to-peak
view of the EGM (pictured) to the unfiltered, peak-to-peak Current of Injury view of the
EGM.
2. Configuration button. Opens the ECG Configuration (page 8) or the EGM Configuration
(page 8) window.
3. AutoGain button. Allows the programmer to automatically set an appropriate gain.
4. Plus (+) and Minus (-) buttons allow you to set the gain manually.
Accessed From: Rhythm Display > Channel Control button
Rhythm Display Setup Instructions
1. Select the Adjust Display button to the right of the Rhythm Display.
The Adjust Display (page 8) window appears.
2. Locate position 1.
3. Select the Source you want to see in position 1 (ECG (page 3), EGM (page 6), Markers (page
4), or Off).
The programmer selects a default Configuration for the Source.
4. Select the Configuration button.
If you selected ECG or EGM for the Source, the ECG Configuration (page 8) or EGM
Configuration (page 8) window opens. If you selected Markers (page 4), select the Basic or
Full button.
5. Choose the configuration.
6. Repeat these steps for the remaining waveforms.
7. Select the Sweep Speed button and choose a speed.
8. Select the ECG Filter button to enable the ECG filter
Electromagnetic interference is reduced when the ECG filter is enabled.
9. Select the AutoGain All button to refresh the AutoGain settings.

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Adjust Display
The Adjust Display window changes the:
Source for each waveform in the Rhythm Display window (ECG (page 3), Markers (page 4),
or EGM (page 6))
Configuration of the waveform
Sweep Speed
ECG Filter to reduce electromagnetic interference
The following buttons are also available:
AutoGain All. Sets all waveforms to AutoGain and recalculates the gain of waveforms
currently displayed in the Rhythm Display.
See also:
ECG Configuration (page 8)
EGM Configuration (page 8)
Rhythm Display Setup Instructions (page 7)
Accessed From: Rhythm Display > Adjust Display button
ECG Configuration
The ECG Configuration window changes the ECG vector on the Rhythm Display (page 2).
For an example of a typical ECG setup, refer to the Merlin™ PCS User's Manual or Merlin™ 2
PCS User's Manual.
To achieve the ECG vectors, select the following electrodes:
I. L(+) to R(-)
II. F(+) to L(-)
III. F(+) to R(-)
aVR. R(+) to [L(-) + F(-)]
aVL. L(+) to [R(-) + F(-)]
aVF. F(+) to [R(-) + L(-)]
Chest. C
Accessed From: Adjust Display > Configuration button
EGM Configuration
The EGM Configuration window changes the EGM source on the Rhythm Display (page 3).
Accessed From: Adjust Display > Configuration button
Freeze Capture
The Freeze button captures the most recent 30 s of the waveform and shows the data in the
Freeze Captures window. Up to six Freeze Captures are saved in the programmer memory. The
controls on the Freeze Captures window include the:
Waveform Control (page 7) buttons, including the Hide button, which hides the selected
waveform
Restore Channels button, which restores the hidden waveforms
Sweep Speed button

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Show Calipers button, which shows calipers that can be moved with button controls to
display time measurements for a portion of the freeze
Hide Calipers button, which toggles to the Show Calipers button
Scroll buttons
You can also print the frozen waveforms immediately (select the Print button) or print all Freeze
Captures with the Freezes report. See Reports (page 32).
Accessed From: Freeze button
Merlin™ PSA Session Information
Contents:
Insert the PSA in the PSA Case (page 9)
Connect the Leads (page 12)
Start a Merlin™ PSA session (page 14)
End a Merlin™ PSA Session (page 15)
Suspend the Merlin™ PSA Session (page 15)
Merlin™ PSA Setup Information
When used with the Merlin™ PCS Model 3650, you must insert the Merlin™ PSA Model EX3100
into the Merlin™ PCS storage compartment. It contains ports for the Merlin PSA patient cables or
patient-cable adapters, the ECG input, and the inductive telemetry wand. For more information,
see Merlin™ PSA Model EX3100 Setup in the Merlin™ PCS User’s Manual.
When used with the Merlin™ 2 PCS Model MER3700, it is a best practice to enclose the Merlin™
PSA Model EX3100 in the PSA case.
Insert the PSA in the PSA Case
If you want to connect to the Merlin 2 Programmer, please complete the following instructions to
properly place the PSA in the PSA case.

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Step 1: Insert the PSA Cable
Figure 3. Inserting the PSA cable
Step 2: Coil the Remaining Cables and Place the PSA on the Tracks in the PSA
Case
Figure 4. Coiling remaining cables and placing the PSA on the tracks in the PSA Case.

11
NOTE: Tracks are located next to the window.
Step 3: Tuck the Remaining Cables into the PSA Box
Figure 5. Tucking the remaining cables into the PSA Case.
NOTE: The Wand (blue cable) and ECG (black cable) are the cables to go inside of the PSA
box.

12
Step 4: Close the PSA Case Lid
Figure 6. Closing the PSA Case Lid.
NOTE: Grayed out cable represents portion
inside of case.
Connect the Leads
1. Turn on the Merlin™ PCS or Merlin™ 2 PCS programmer and check that the blue LED on
the Merlin™ PSA is lit.3
2. Select one of the three approved patient cables or cable adapters you are going to use to
connect to the implanted lead(s).
The three cables that can be connected to the Merlin PSA include:
-Merlin PSA Patient Cable Model EX3150 (terminates to three sets of connector clips for
three channels: A, RV, LV)4
-Merlin PSA Cable Adapter Model EX3170 (terminates to a connection for
Models 4051L and 4161 patient cables)
-Merlin PSA "M" Cable Adapter Model EX3180 (terminates to a connection for a
Medtronic™ Model 2292 patient cable)5
For more details on the cables and adapters, see Merlin™ PSA Accessories.
CAUTION: Do not attempt to connect the Medtronic™ patient cable Model 5436 to the
Merlin PSA. This patient cable is not electrically compatible and will result in
inaccurate impedance measurements and an inability to pace or sense.
3It may take up to 10 seconds for the blue LED to illuminate.
4The connector clips on the Model EX3150 are compatible with IS-1, DF-4, and DF-1 lead connectors.
5Medtronic is a trademark of Medtronic, Inc.