Power Probe Tek PRO SERIES THE MAESTRO User manual

PRO SERIES THE MAESTRO™
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Conforms to UL STD. 61010-1,
61010-2-030, and 61010-031
Certified to CSA STD. C22.2
NO. 61010-1, 61010-2-030 and
61010-031

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TABLE OF CONTENTS
Introduction ............................................................................................. 3
Safety ........................................................................................................ 4
Appearance and Controls .................................................................. 5
EZ Learning ............................................................................................. 7
Guided Diagnostics .............................................................................. 8
Start Up ..................................................................................................... 9
Main Menu ............................................................................................... 10
Mode Navigation ................................................................................... 11
Testing and Measuring Operations
• DC Voltage in VDC Mode .................................................. 12
• Activating Components ...................................................... 13
• Resistance Testing on OHM Mode ................................. 14
• Power Feed Test ................................................................... 15
• AC Voltage Measurement (RMS) ...................................... 17
• AC Voltage Measurement (P to P) ................................... 18
• Frequency Measurement ................................................... 19
• Trace Mode ........................................................................... 20
Advanced Testing Operations
• Fuel Injector Mode ............................................................. 23
• Power Probe TEK Pro Series APP................................................. 25
• Pairing ..................................................................................... 27
Tool Repair Operations ...................................................................... 28
Specifications ........................................................................................ 29
Warranty .................................................................................................. 30

Thank you for purchasing the Pro Series Maestro™
Diagnostic Electronic Circuit and Component Tester. This
is the first of our Pro Series line of tools made for
Professionals. With powerful multimeter functions, ad-
vanced diagnostic modes, easy to read color LCD display,
and a new rugged dust and water resistant housing. The
Pro Series Maestro™ is designed to give you years of trou-
ble free testing. Also, an updateable and useful app that
will expand your tools capabilites and give you access to
answers and solutions that you need.
The unique configuration of Power Probe testers gives
them many advantages over using conventional test
lights or multimeters for circuit testing.
(1) Since the Pro Series Maestro™ is connected to the
battery, you can apply battery power or battery ground di-
rectly to the tip of the tool. You can energize and activate
components to verify their correct operation. This is real
dynamic component testing and the only true way to test
an active component.
(2) Pro Series Maestro™ is always connected to the ve-
hicle’s battery, so the tool maintains a permanent con-
nection to the source power and ground voltage. Circuit
voltage checks are quickly performed with just a single
probe connection, unlike using two meter leads.
(3) Using the Pro Series Maestro™, all your voltage checks
are referenced back to the source battery and account
for every connection and possible voltage drop between
the source and the probe tip.
(4) Automatic Voltage Drop Indication. When probing a
circuit, if the voltage measured at the tip is 0.5 volts lower
(or more) than the source battery voltage, the red LED will
not illuminate, and no tone will sound. This will instantly
alert you that there is a voltage drop that may need to be
investigated or repaired.
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3
INTRODUCTION

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4
SAFETY
CAUTION - PLEASE READ
To avoid possible electric shock or personal inury, and to avoid damage to the Power Probe
or item being tested, please use the Power Probe according to the following safety proce-
dures:
• Power Probe TEK recommends reading this manual before using the Maestro™.
• This product is designed to be powered from DC power sources such as
found in Automotive, Small Craft marine, and Small Craft Aviation electrical system and will
be damaged if connected to line voltage.
• Do not connect to electrical systems with higher than rated voltage specified in this manual.
• Do not test voltage exceeding the rated voltage on the Maestro™.
• When testing voltage exceeding 30V AC RMS, 42V AC Peak, or 60V DC, be particularly
careful to avoid any electrical shock.
• Check the Maestro™case for cracks or damage. Damage to the case can leak high volt-
age, causing a potential electrocution risk.
• Check the Maestro™cables for any insulation damage or bare wires. If damaged, do not
use the tool. Please contact Power Probe TEK Technical Support.
• Use only shrouded leads and accessories authorized by Power Probe to minimize exposed
conductive electrical connections to eliminate shock hazard.
• Do not open the Maestro™as there are no servicable parts inside. Opening the
Maestro™voids the warranty. All repairs should only be performed by authorized Power
Probe service centers.
• When maintaining the Maestro™, use only replacement parts specified by the manufactur-
er.
• Use only in well ventilated areas. Do not operate around flammable materials, vapor, or
dust.
• Be careful when energizing components that have moving parts, as assembiles containing
motors, or high powered solenoids.
• Power Probe TEK shall not be liable for damage to vehicles or components caused by
misuse.
• Power Probe TEK shall not be held liable for any harm caused by unintentional or intential
misuse of our products or tools.

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5
APPEARANCE AND CONTROLS
Removeable Probe Tip uses standard 4mm
banana type connector enabling use of
dierent probes, leads, or extensions.
LED, Green (-) Will light indicating a path to
ground. More than 10 Ω resistance and/or
more than 0.5 volts on a ground circuit, the
Green LED will not illuminate.
LED, Red (+) Will light indicating (Batt +)
Battery Positive. If the circuit voltage drop
is more than 0.5 volts from battery voltage,
the Red LED will not illuminate.
Color Screen - Large Hi-Res LCD display
shows multiple readings on the one screen.
A graphic interface indentifies what mode
you’re in.
Button, “Clear” used to clear Min/Max in
Multi-meter modes.
Button, “Pair” used to connect to the APP.
Button, “Up”, “Down”, “Left”, “Right” Used to
navigate the menus.
Button, Center; “MODE” Select - Used to
select a test mode when navigating menus.
Button, “Flip” Used to turn the screen con-
tent upside down.
Button, “Mute” Used to turn the Speaker-
Tone On/O.
Rocker Switch (replaceable) Part
#PPTK0021 - When rocker switch is
pressed forward, battery power is applied
to the probe tip. When rocker switch is
press rearward, battery ground is applied
to the probe tip. Can only be used when in
either of the DC voltmeter modes.
Speaker - Distinct tones for power or
ground.
2
3
4
5
6
7
8
11
1
9
10
12

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APPEARANCE AND CONTROLS
13
14
15
16
17 Rear
Cover
SERIAL NUMBER
CIRCUIT BREAKER (RE-
PLACEABLE)
PART # PPTK0030
USB CONNECTOR
5 X 20mm 20A
FAST BLOW FUSE;
PART # PPTK0042

EZ Learning Mode will guide you through a step by step fa-
miliarization of the Maestro™, showing you how to operate the
tool and how the probe responds in certain testing conditions.
From the Main Menu select the EZ Learning icon. EZ Learning
will take you through a step by step process.
Once EZ Learning Mode is selected, it must be scrolled
through from start to finish before it will exit EZ Learning
Mode. You can also exit EZ Learning by disconnecting pow-
er from the probe and the probe will enter normal test mode
when re-connected. NOTE: If you see a flashing screen in the
menu, it means go to that selection and press enter.
This mode is to be used for familiarization and guidance only,
and is not a mode used for actual circuit diagnosis.
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INTRODUCTION TO EZ LEARNING

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8
INTRODUCTION TO GUIDED DIAGNOSTICS
Guided Diagnostics Mode will help guide you through specific ve-
hicle or components test and let you know if readings obtained are
acceptable to outside of the normal readings.
From the Main Menu, click on The Guided Diagnostics icon. With
Guided Diagnostics, you can have a better understanding of the ba-
sic testing steps in electrical diagnosis. This will help you diagnose
most basic electrical problems starting with the most fundamental
issues.
The results provided will inform you of the state of the vehicle with
OK, LOW, HIGH or CHECK.
Tests available in order are:
BATTERY TEST - Provides feedback on battery state of charge
CHARGE TEST - Provides a test for Alternator Charge state and
ripple
FUST TEST - Gives a straight forward answer on fuse condition
COMPONENT CHECK - Suggests best practices
WIRE TEST - Gives you feedback on the health of the wiring system
It should be noted that the tests are a guide to best practices for
general Automotive Electrical diagnosis but do not consitute a
complete diagnosis and do not guarantee issues are good or bad.
Knowledge of general diagnosis is required.
-
-
WIRE
TEST EACH WIRE
FOR PATH BACK
TO BATTERY
BATT
ALT
FUSE COMP
WIRE
CIRCUIT IS
OPEN
FUSE BOX
TEST EACH FUSE PIN
READINGS SHOULD MATCH
OPEN
BATT
ALT
COMP WIRE
FUSE
CHARGING
ALTERNATOR RIPPLE
BATT FUSE COMP WIRE
ALT
TURN ON ENGINE,
TURN ON
HEADLIGHTS
=< .5 VAC
CHARGING
ALTERNATOR CHARGE
BATT FUSE COMP WIRE
ALT
TURN ON ENGINE,
TURN ON
HEADLIGHTS
13.8 -15.3 VDC
BATTERY
CHARGE
CAPACITY
START ENGINE
ALT
FUSE COMP WIRE
BATT
COMPONENT
BATT
ALT
FUSE WIRE
COMP
CHECK BOTH TERMINALS
OF A COMPONENT BY
TOUCHING WITH TIP
SHOULD READ GROUND
OR THE COMPONENT IS
OPEN. IF OK, TOUCH TIP
TO THE POSITIVE SIDE AND
PRESS THE + BUTTON.
COMPONENT SHOULD BE ON
TO BOTH SIDES. BOTH

Operation Source Voltage
The Maestro™is designed to connect
to and is powered by 12 to 24 VDC
electrical systems. It comes supplied
with a 23 ft. heavy duty power cable and
a Y-connector with 2 battery clips.
Connecting To The Vehicle’s Battery
(Voltage Source)
Connect the red clip to the positive ter-
minal of the vehicle’s battery source and
the black clip to the negative or ground
terminal. The Maestro™start-up tone will
sound.
Auxiliary Ground Lead
The auxiliary ground lead provides
ground to circuits and components that
are not already connected to ground.
It also serves as the negative lead for
resistance testing. To test the auxiliary
ground lead, contact the probe tip and
the auxiliary ground lead together. The
Green LED should illuminate. This shows
that the auxiliary ground lead is working
properly. If the green LED does not illu-
minate, check the replaceable 20 amp
fuse in the auxiliary ground lead. The
fuse is for protection in the event the
ground lead inadvertantly contacts the
positive voltage.
LED Flashlight
Flashlight is a standard feature on the
Maestro™. The two bright white LEDs
are always ON making it possible to see
under dashboards and in dark areas.
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9
START-UP
Flashlight
23 ft. Power
Lead
Battery Clips
Auxiliary
Ground
Lead
Red/Green
LEDs
Rocker
Switch
Alligator Clip
Adapter
4” Tip

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MAIN MENU
There are 4
Main Menu
Selections.
There are 5
Multi-meter
Selections
There are 5
Guided
Selections
The Maestro™provides a more updated user interface and combines it
with an App that expands the tools capability and access to knowledge.
To access the features of this tool, there are new buttons provided that
are intuitive and simple to understand. All buttons only have one function
marked, no extended pressing or double pressing is required. You will find
the most used features such as Clear, Mute, Flip, and Pair all have a readily
accessible button to keep you from scrolling to find them.
Another feature is all menu options for any given mode are present on the
screen at all times. If you are on the Main Menu, you will find all the options
on one screen. The Up, Down, Left, and Right buttons do just that.
When in Multi Meter Mode or Guided Diagnostics, all possible selections
are present without jumping in and out of the menu.
We have made this the easiest and most intuitive Power Probe yet and
the first of our Pro Series Line which provides expanded features with a
connected App for both Android and iPhone users.
GUIDED
DIAGNOSTIC
INJECTOR
EZ
LEARNING
GUIDED
DIAGNOSTIC
MULTIMETER INJECTOR
EZ
LEARNING
GUIDED
DIAGNOSTICS

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11
MODE NAVIGATION
The Maestro™has 5 dierent test modes available inside Multi Meter Mode and 1
stand alone mode:
1. VDC - For DC voltage measurements. This is the default mode on startup. Max.
200 VDC
2. OHM - For resistance readings. All readings are current loaded so wire issues
will cause readings to appear dierent than other meters. Inside Ohm Mode is:
FEED TEST - For displaying voltage drops caused by wiring issues on feed and
ground circuits.
3. AC RMS - For AC voltage measurements. Displays an RMS averaged AC volt-
age. Max 200 VAC.
4. P-P - For AC voltage measurements. Displays Peak to Peak AC voltage. Max
200 VAC.
5. Hz FRQ CTR - For measuring signal Frequency. Also displays + and - Pulse
Width.
6. FUEL INJ - Test Fuel Injectors and Injector circuits *outside Multi Meter mode.
Press
the
“Right Arrow”
button
Scroll to the Mode
The icon will highlight
You can press
“Left Arrow”
to go back
Press
the
“MODE”
to select
button

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12
DC VOLTAGE MEASUREMENT IN VDC MODE
VDC - VDC mode is for testing DC (direct current)
voltages. Voltage testing is as easy as contacting
the probe tip to a circuit and reading the display.
The Maestro™will display the probe tip voltage in
the center display.
The Maestro™automatically enters VDC Mode
when first connected to the vehicle’s battery, or to
a 12-24 volt power supply. VDC Mode is the only
mode that the Power Probe can supply battery
power or ground by pressing the rocker switch.
If the probe tip voltage is within 0.5 volts of the
source battery voltage, the Red LED will illuminate
In this mode, you will supply battery power or battery
ground to the tip when pressing the rocker switch
and if the speaker is turned on, the speaker will emit a high-tone.
When testing on ground circuits, as long as there is less than 10 Ohms
total circuit resistance from tip to battery ground voltage and is .5V or
less, the Green LED will illuminate and the speaker will emit a low-tone.
This greatly simplifies testing as the Maestro™Red/Green LEDs and
speaker tones provide a quick indication if there are excessive voltage
drops or circuit resistance. If the LEDs do not illuminate and there is no
tone from the speaker, you know instantly there may be a circuit prob-
lem.
Minimum and Maximum (MIN/MAX) voltages are shown on the top and
bottom left of the display. To reset the MIX/MAX, press the left “CLEAR”
button beneath the display.
VDC Mode has a very high sampling rate that is good for tests where the
tech is looking for glitches or deviations from the main signal. This is a
very sensitive mode that can capture even the smallest voltage spikes or
drop-outs without having to use a scope.
The Maestro™can safely measure up to 200 VDC.

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13
ACTIVATING COMPONENTS IN VDC MODE
Activating Electrical Components in VDC Mode is one of the
main features that makes the Maestro™very useful in test-
ing. Being able to apply battery power or ground right to the
probe tip gives you the ability to activate and
dynamically test electrical components such as lights, mo-
tors, and solenoids.
You can power up components on the vehicle or on the
bench by utilizing the auxiliary ground lead. This type of
dynamic component testing is the only true method to
verify a components correct operation. Testing a part with
a volt-ohmmeter may tell you if the part is out of spec, but
you never really know if the part is good until it is operating
under power.
Pressing the rocker switch forward supplies battery power to
the probe tip.
Pressing the rocker switch rearward supplies battery ground
to the probe tip.
The power output is circuit breaker protected. If the compo-
nent being tested draws too much current, or the circuit has
a shorted condition, the Maestro™circuit breaker will trip
protecting the tool and the circuit.
Pressing the rocker
switch in any other
mode will not apply
power or ground and
the main screen will
display this message.
When the
circuit breaker is
display will show
“CIRCUIT BREAKER
TRIPPED” and
will automatically
reset itself after a
10-20 seconds.
tripped, the unit

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14
RESISTANCE TESTING IN OHMMETER
2
3
6
1
4
5
This arrow indicates the up arrow can
be pressed for special function
Speaker is on
Total circuit resistance on the center
screen
Max and Min resistance
Multi Meter selection
If #1 arrow is pointing up, pressing the
up arrow will access special function
OHMMETER is used to check resistance on
static circuits or voltage by simply probing the
connection of the circuit being tested.
OHMMETER is used like a standard Ohmmeter
and measures total circuit resistance from the
source battery accurately with the Aux. Ground
lead whether there is voltage feeds on the
circuit or not. In this mode, the Maestro™display
will show:
The circuit resistance will be calcuated even with voltage applied to the circuit. To accu-
rately test the power and ground feed resistance, the component must be removed from
the circuit first. Simply unplug any component, relay or module on the circuit, contact the
probe tip to the circuit and view the circuit resistance.
Maestro™has a feature located in some modes that show an arrow in the upper right
corner of the screen. If this arrow is present, pressing either the up or down arrow as
indicated by the state of the arrow will take you to special functions or back to the main
screen. In Ohmmeter, pressing the up arrow will take you to the Feed Test.

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15
POWER FEED TESTING
Probe Tip Voltage.
Battery Voltage.
1
2
3
4
Down Arrow Indicates pressing the Down
Arrow will return to Ohm Meter
FEED TEST - Power Feed Test is used to
identify voltage drops on active circuits by
probing one connection of the circuit being
tested.
PFT displays both Battery and Tip voltage
simultaneously for easy voltage drop testing.
While testing, use the Aux. Ground and tip to
by-pass components. Place meter in line in
place of component and operate switches or
relays to close circuit.
In this mode, the Maestro™display will show:
Ohm symbol displays and flashes if .5V
drop is exceeded showing that excessive
resistance may be present as corrosion or
other wire damage.

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OHM TESTING AND POWER FEED
To test, first disconnect the device or load being operated from the circuit,
then contact the probe tip to the circuit being tested. Disconnecting the
component from the circuits prevents it from aecting and altering the
resistance reading.
Ohmmeter can also be used on wires or components not connected to
battery power or ground. Simply connect the item being tested between
the probe tip and the auxiliary ground lead and read the resistance read-
ing in Ohms.
While it is possible to ohm check some components, it should be noted
that Ohmmeter and PFT are primarily for use on wiring only and should
never be connected to a solid state component such as a module.
In Feed Test, you will see the LED’s light if the circuit is within the LED limits
and if they do not, you can see the actual voltage drop on the display.

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17
AC VOLTAGE MEASUREMENT RMS
AC RMS Mode is for measuring AC (al-
ternating current ) voltages and can be used
on any AC voltage or pulsed waveform signal
where an RMS average voltage measure-
ment is required.
Contact the probe tip to the circuit and it will
display an RMS averaged AC voltage reading
in the main display area while also displaying
RMS Min/Max AC voltages on the top and
bottom left of the display.
Powering up and activating circuits with the
rocker switch can not be performed in this
mode.
Pressing the “CLEAR” button will reset Min/
Max readings.
AC RMS Voltage is used in the same manner as a standard DVOM
would be used to measure the averaged AC voltage in any circuit that
produces AC voltage. This can be used for, but not limited to, tests such
as checking alternator diode ripple, abs sensors, crank sensors, etc.
WARNING: Do not use the Maestro™to test AC line voltage such as 120V
wall plug. This will damage the probe and could cause personal injury.
Vehicle use only.

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18
AC VOLTAGE MEASUREMENT (P-P)
P-P Mode can be used on any AC
voltage signal where a Peak to Peak (P-P)
voltage measurement is required.
P-P stands for Peak to Peak AC voltage.
Where AC RMS displays an average AC
voltage, P-P does not average the read-
ing but displays the total voltage dier-
ence from the lowest to highest voltage
extreme on an AC signal.
In this mode, the display will be an AC
Voltmeter that shows the peak voltage
dierence in the center and the Min/Max
voltage readings along the top and bot-
tom left of the display.
The voltage displayed is the total voltage
potential between the lowest and highest
voltage sensed on the AC signal being
measured.
The total Peak to Peak voltage will be shown in the main display area.
The Min voltage will display lowest absolute voltage on the bottom left
of the display and the Max voltage will display the highest absolute volt-
age on the top left of the display.
Powering up and activating circuits with the rocker switch can not be
performed in this mode.
Pressing the “CLEAR” button will reset Min/Max values.
This can be a more accurate test for signal circuits such as sensors or
data communication lines where measuring the full range of the AC
signal is required.
The Maestro™can measure P-P Ac voltage from -100V to +200V.

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19
FREQUENCY MEASUREMENT
FRQ CTR - Frequency Counter mode is used
for measuring the frequency of an alternating
voltage signal.
Contact the probe tip to the circuit and it
will display the frequency in Hertz (cycles
per second) and Duty Cycle on the top and
also displaying the + Pulse Width and - Pulse
Width in milliseconds on the bottom.
The Maestro™can measure frequencies from
1Hz to 9999Hz.
FRQ CTR can be used for tests where fre-
quency or pulse width are needed such as
MAF sensors, wheel sensors, etc.

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TRACE MODE
The Maestro™ has a new feature called Trace Mode. In Trace Mode, you
can view the data as a wave form. Trace Mode can be found in VDC, VAC,
Frequency, and Injector Modes. Each mode displays relevant information
tailored for automotive testing.
To enter Trace Mode, first enter into 1 of the 4 modes: VDC, VAC, Frequen-
cy, or Injector. At the top right of the screen, the double arrows indicate
you can press the Up Button to change modes. Pressing the Up Button will
change to Trace Mode.
NOTE: When in Trace Mode, the double arrows are pointing down indicat-
ing to press the down button to go back. Pressing the left or right buttons
in trace mode will take you into the meter indicated but will enter as stan-
dard mode.
Trace Mode in VDC
X
VDC
MAX
MIN
Hz
FRQ.
P-P
VAC
OHM
VDC VAC
VDC
OHM
Hz
FRQ.P-P
TIP
0.00
MAX reading will collect and
hold the highest measured
reading until clear is pressed.
MIN reading will collect and hold
the lowest measured reading
until clear is pressed.
Average voltage on the tip
Ground Reference line
Active Trace Area (ATA)
(Area highlighted here for clarity)
Battery Voltage
Down arrow indicates pressing
the down button to exit trace
In VDC Mode, Min/Max, and average tip voltage are always displayed on
the left screen. The linear trace reading will display in the field highlighted
active trace area. VDC will typically be displayed as a flat line. The
Maestro™ can read up to 200V so ranging will cause the highest value to
be displayed at the top of the active trace area while auto zooming in and
out.