multiphase system simultaneously to
any COM
Common (COM) connections should be
equipotential, as marked.
•Remove the batteries if the Product is
not used for an extended period of time,
or if stored in temperatures above 50 °C.
If the batteries are not removed, battery
leakage can damage the Product.
•The battery door must be closed and
locked before you operate the Product.
•Comply with local and national safety
codes. Use personal protective
equipment (approved rubber gloves, face
protection, and flame-resistant clothes)
to prevent shock and arc blast injury
where hazardous live conductors are
exposed.
•Do not apply more than the rated
voltage, between the terminals or
between each terminal and earth ground.
˜ (common) connection. All
•Limit operation to the specified
measurement category, voltage, or
amperage ratings.
•Use Product-approved measurement
category (CAT), voltage, and amperage
rated accessories (probes, test leads,
and adapters) for all measurements.
•Measure a known voltage first to make
sure that the Product operates correctly.
•Use the correct terminals, function, and
range for measurements.
•De-energize the circuit or wear personal
protective equipment in compliance with
local requirements before you apply or
remove the flexible current probe from
hazardous live conductors.
Product. Look for cracks or missing
plastic. Carefully look at the insulation
around the terminals.
•Do not use test leads if they are
damaged. Examine the test leads for
damaged insulation, exposed metal, or if
the wear indicator shows. Check test
lead continuity.
•Use only cables with correct voltage
ratings.
•Connect the common test lead before
the live test lead and remove the live test
lead before the common test lead.
•Keep fingers behind the finger guards on
the probes.
•Remove all probes, test leads, and
accessories before the battery door is
opened.
•Remove all probes, test leads, and
accessories that are not necessary for
the measurement.
•Do not exceed the Measurement
Category (CAT) rating of the lowest rated
individual component of a Product,
probe, or accessory.
•Do not use a current measurement as an
indication that a circuit is safe to touch.
A voltage measurement is necessary to
know if a circuit is hazardous.
• Disable the Product if it is damaged.
• Do not use the Product if it is damaged.
• Do not use the Product above its rated
frequency.
•Do not use the Current Probe if it has
damaged insulation, exposed metal, or if
the wear indicator is visible.
•Do not wear loose-fitting clothing or
jewelry and keep long hair tied back
when near rotating machinery. Use
approved eye protection and approved
personal-protective equipment where
necessary.
See Table 1 for a list of symbols used on the Product and
in this manual.
Table 1. Symbols
Symbol Description Symbol Description
W
T
˜
/
~
4
WARNING. RISK OF DANGER.
Consult user documentation.
Double Insulated
Earth
Equipotential
Conforms to relevant Australian Safety and EMC standards.
Measurement Category III is applicable to test and measuring circuits connected to the distribution part of the
building’s low-voltage MAINS installation.
Measurement Category IV is applicable to test and measuring circuits connected at the source of the building’s
low-voltage MAINS installation.
This product contains a Lithium-ion battery. Do not mix with solid waste stream. Spent batteries should be
disposed of by a qualified recycler or hazardous materials handler per local regulations. Contact your
authorized Fluke Service Center for recycling information.
This product complies with the WEEE Directive marking requirements. The affixed label indicates that you must
not discard this electrical/electronic product in domestic household waste. Product Category: With reference to
the equipment types in the WEEE Directive Annex I, this product is classed as category 9 "Monitoring and
Control Instrumentation" product. Do not dispose of this product as unsorted municipal waste.
X
P
Ã
)
y
WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.
Conforms to European Union directives.
Conforms to relevant South Korean EMC Standards.
Certified by CSA Group to North American safety standards.
Table 2 is a list of the items included in your Test Tool kit.
Also see Figure 1.
Table 2. Packing List
Item Description 12x-B 12x-B/S
Fluke Test Tool 123B, 124B or 125B 123B/S, 124B/S or 125B/S
Rechargeable Li-ion Battery Pack ••
Switch Mode Power Supply, Adapter/Battery Charger ••
D Shielded Test Leads with Black Ground Leads ••
E Test Lead Black (for Grounding) ••
F Hook Clips (red, blue) ••
G Banana-to-BNC Adapters (black) • (x1) • (x2)
H Safety Information + CD-ROM with Users Manuals ••
I 10:1 Voltage Probe 124B, 125B124B/S, 125B/S
J i400s AC Current Clamp 125B125B
K USB Angled Adapter ••
L WiFi USB Adapter depends on version
M Soft Carrying Case •
N Magnetic Hanger •
O FlukeView
Before you use your Test Tool for the first time, read this
section.
Battery Pack
Li-ion batteries may be discharged at delivery. Completely
discharged batteries can cause the Test Tool not to start
up when it is turned on. To reach full charge, charge for 4
hours with the Test Tool turned off.
When fully charged, the batteries provide up to 7 hours
(single channel, time base slower than 1 µs/div) of use
when the backlight is dimmed.
The battery status shows as an icon in the top right
corner of the screen:
b - full charge
- about 5 minutes of operation remains
To charge the batteries and power the instrument, connect
the power adapter as shown in Figure 2. To charge the
batteries more quickly, turn off the Test Tool.
W Caution
To prevent overheating of the batteries
during charging, do not exceed the allowable
ambient temperature in the specifications.
Note
The power adapter does not damage the Test
Tool even when connected over consecutive
days. The power adapter automatically switches
to a trickle charge.
Alternatively, you may choose to exchange the battery
(Fluke accessory BP290) with a fully charged one and
use the external battery charger EBC290 (optional Fluke
accessory).
To accommodate connection to various line power
sockets, the BC430/820 universal Battery Charger /
Power Adapter is equipped with a male plug that must be
connected to a line cord appropriate for local use.
Because the adapter is isolated, the line cord does not
need to be equipped with a terminal for connection to
protective ground. Or use a line cord with a protective
grounding terminal.
Mains Power Source
To use the mains power source:
1. Attach the power cord to the mains power.
2. Attach the DC power connector in the left side of the
Test Tool.
3. Push to turn on the Test Tool.
The Test Tool turns on within 10 seconds in its last setup
configuration.
SD Memory Cards
The Test Tool has a SD Memory Card for storage of
recorder measurement data or data sets (see page 55).
The file format is FAT32. This data is retained also when
the Test Tool is disconnected from its power sources. The
memory card is located in the battery compartment.
To lock or unlock the card, press it down. The correct
position of the card is shown in the compartment. This
compartment also contains a connector for adding WiFi
connectivity with a USB flash drive. See Wireless Connectivity for more information.
W Caution
To prevent damage to the SD memory card,
do not touch the contacts.
By default the display is at the brightest setting. To extend
the battery life, you can decrease the brightness setting.
To change the brightness of the display:
1. With the Test Tool turned on, push for >3 seconds
and release.
2. Push
YZ to increase or decrease the backlight.
Menu Selection
The buttons on the keypad provide the navigation through
the functions you see on the display. For example, this is
the basic sequence for how to adjust a parameter:
YZ
YZ
YZ
YZWX
Tips:
• Push a second time to close the MENU and
resume normal measurement. This toggle enables
you to check the menu without changing the settings.
•When you do not change an item with the cursor
keys, push to step through a menu without
changing the setup of the Test Tool.
•Gray text in a menu or button bar indicates that the
function is disabled or the status is not valid.
The Test Tool has two 4 mm safety-shielded banana jack
inputs (red input A and blue input B) and a black safety
4 mm banana jack input (COM). See Figure 4.
hxv05.eps
Figure 4. Input Connections for Measurement
Input A
Use the input A (red) for all single input measurements.
Input B
For measurements on two different signals, use B input
(blue) together with input A (red).
COM
Use the COM input (black) as the single ground for low
frequency, continuity, Ohm (Ω), diode, and capacitance
measurements.
XW Warning
To prevent electrical shock or fire, use only
one COM ˜ (common) connection, or ensure
that all connections to COM ˜ are at the
same potential.
Measurement Probe Setup
The Test Tool supports measurement probes, for
example:
The Test Tool is equipped with a tilt stand, allowing
viewing from an angle. You can also use the tilt stand to
hang the Test Tool at a convenient viewing position. See
Figure 5.
Hanger
The optional hanger accessory is magnetic and used to
hang the Test Tool on metal surfaces such as a cabinet
door. See Figure 5.
The Scope and Meter mode is the default operation
mode. When in another mode, such as Recorder, Power
Harmonics, or BusHealth, push to return to Scope
and Meter operation. In Scope and Meter mode, the
button bar looks like this:
sm_bar_eng.eps
To go to the Move and Zoom button bar, push until
you have left any open button bar or menu.
mz_bar_eng.eps
The yellow text on the button bar indicates the status.
Push the button to change the status.
XW Warning
To prevent possible electrical shock, fire, or
personal injury:
•Do not touch exposed metal on banana
plugs. They can have voltages that could
cause death.
•Disconnect power and discharge all
high-voltage capacitors before you
measure resistance, continuity,
capacitance, or a diode junction.
•Do not put metal objects into
connectors.
•Do not use exposed metal BNC or
banana plug connectors.
•Do not use the HOLD function to
measure unknown potentials. When
HOLD is turned on, the display does not
change when a different potential is
measured.
When you change a setup, a part of the screen shows the
choices. Use WXYZ to access the menu choices.
Connect-and-View™
The Connect-and-View™ function (Auto Set) enables
hands-off operation to display complex unknown signals.
This function optimizes the position, range, time base,
and triggering to ensure a stable display on most
waveforms. The setup will track the changes if the signal
changes. This feature is enabled by default.
To enable the Connect-and-View™ function when in
Manual mode:
1. Connect the red test lead from red input A to the
unknown signal to be measured.
2. Push to toggle between the Auto (automatic) and
Manual modes.
In Figure 6 the screen displays “1.234” in large numbers
and “50.00” in smaller numbers. A scope trace gives a
graphical representation of the waveform.
The trace identifier is visible at the left side of the
waveform area. The zero icon (-) identifies the ground
level of the waveform.
Figure 6. Auto Set Function
Measurements
The reading area shows the numeric readings of the
chosen measurements on the waveform that is applied to
the input jack. Figure 7, Figure 8, and Figure 9 illustrate
the setups for measurements.
For proper grounding, connect the short ground leads to
the same ground potential, see Figure 8 setup 4. You can
also use test leads for grounding, see Figure 8 setup 5.
See also Grounding Guidelines on page 68.
Ohm, Continuity, Diode, Capacitance
Measurements
Use the red shielded test lead from input A and the black
unshielded ground lead from COM (common) for Ohms
(Ω), continuity, diode, and capacitance measurements.
See Figure 7 setup 1.
Current Measurements
Select the probe setting that matches the used current
clamp and its setting, for example, 1 mV/A. See Figure 9
and Measurement Probe Setup.
Temperature Measurements
Use a 1 mV/°C or 1 mV/°F temperature transmitter (not
available in all countries) to get the correct temperature
reading. See Figure 9.
Power Measurements
Select correct probe settings for voltage measurement on
input A and current measurement on input B. See
Figure 7 setup 2.
IntellaSet™ / AutoReading
The AutoReading function uses Fluke IntellaSet™
technology to enable hands-off operation to display meter
readings that correspond with the shape of the waveform.
This function automatically selects the meter readings
that are most often used with the measurement of the
waveform shape. As an example, when the waveform is a
line voltage signal, the V ac + dc and Hz readings show
automatically.
To enable the AutoReading function on input A:
1. Push to open the Scope and Meter button bar.
2. Push 1 to open the MEASURE menu. See
Figure 10.
3. Push 1 to select the AutoReading to ON.
4. Push 4 to select Done and close the menu.
To disable this function, repeat the steps and select the
AutoReading to OFF.
You can freeze the screen (all readings and waveforms)
at any time:
1. Push to freeze the screen. The information area
at the top of the screen shows .
2. Push again to resume measurements.
How to Hold a Stable Reading
The AutoHold® mode captures a stable main (large)
reading on the display. When the Test Tool detects a new
stable reading, it beeps and shows the new reading.
To use the AutoHold function:
1. Push to open the Scope and Meter button bar.
2. Push 1 to open the MEASURE A button bar.
3. Push 3 to enable AutoHOLD. The Information
area of the screen updates and the button label
shows AutoHOLD ON.
4. Push 4 to close the MEASURE A menu and
button bar.
5. Wait to hear the audible beep that means you have a
stable reading.
6. Repeat Step 1 to Step 4 to disable the AutoHold
function.
Zero Reference shows the present measurement result
with respect to the defined value. Use this feature to
monitor the measured value in relation to a known good
value.
To setup:
1. Push to open the Scope and Meter button bar.
2. Push 1 to open the MEASURE A button bar.
3. Push 2 to enable the relative measurement
(Zero On).
4. Push 4 to close the MEASURE A menu and
button bar.
The relative measurement is now the main reading,
and the former main measurement is now the smaller
secondary reading position.
5. Repeat Step 1 to Step 4 to disable the relative
measurement.
Push to toggle between the Manual and Auto
Ranging modes.
When Auto Range is active, the Information area shows
Auto and the Test Tool automatically adjusts the position,
range, time base, and triggering (Connect-and-View).
This ensures a stable display on nearly all waveforms.
The Status area shows the range, the time base for both
inputs, and the trigger information.
When Manual is active, the Information area shows
Manual.
Screen Graphic Adjustment
From Auto Range, use YZWX to manually change the
waveform trace. This turns off the Connect-and-View
function. Observe that Auto in the Information area
disappears.
Amplitude
The available amplitude settings are from 5 mV/div to
200 V/div with the use of test leads.
1. Push to enlarge the waveform.
2. Push to reduce the waveform.
Time Base
The available time base settings are 10 ns/div or
20 ns/div (depends on model) to 5 s/div in normal mode.
1. Push (s) to increase the number of periods.
2. Push (ns) to decrease the number of periods.
Waveform Position
You can move the waveforms around on the screen.
Repeatedly push until all menus and secondary
button bars close.
1. Push 1 to select Move A.
2. Use
The trigger identifier () moves horizontally and vertically
on the screen as the waveform moves.
WXYZ to move the A waveform on the
screen.
Note
The waveform positions are fixed for 3-phase
power measurements.
To view the waveform without higher frequency noise:
1. Push to open the Scope and Meter button bar.
2. Push 3 to open the INPUT SETTINGS menu.
3. Use YZ to highlight the Noise filter as ON.
4. Push to make the change.
This noise filter is a 10 kHz bandwidth limit filter.
hxv15.eps
Glitch Display
By default, the displayed waveform shows glitches. For
each time position the minimum and maximum values
since the last time position are shown. A glitch of 25 ns or
wider is still visible on the screen even when using a
slower timebase.
To disable this feature and see one sample/channel for
each sample time:
1. Push to open the Scope and Meter button bar.
2. Push 2 to open the SCOPE menu.
3. Use
4. Push to make the change.
5. Push 4 to exit the menu.
YZ to highlight the Type as Glitch Off.
This feature will be turned off for both channel A and
channel B.
3. Use YZ to highlight the Type as Smooth. Both the
input A and input B waveforms are smoothed.
4. Push to make the change.
5. Push 4 to exit the menu.
Waveform smoothing suppresses noise without loss of
bandwidth. Waveform samples with and without
smoothing are shown in Figure 11. Smoothing is the
average of eight acquired waveforms. Glitch detect is
turned off in this mode.
The Test Tool records the envelope (minimum and
maximum) of the live waveforms for inputs A and B.
Repeat the first two actions of Smoothing the Waveform,
and then do the following:
To display the waveform envelope:
1. Push to open the Scope and Meter button bar.
2. Push 2 to open the SCOPE SETTINGS menu.
3. Use
YZ to highlight the Type as Envelope.
4. Push to make the change.
5. Push 4 to exit the menu.
The screen shows the resultant envelope waveform. You
can use Envelope to observe the variations in time or
amplitude of input waveforms over a longer time period.
Use AC-coupling to observe a small ac signal that rides
on a dc signal.
To select ac-coupling on input A:
1. Push to open the Scope and Meter button bar.
2. Push 3 to open the INPUT SETTINGS menu.
3. Use YZ to highlight the Coupling as AC.
4. Push to make the change.
5. Push 4 to exit the menu.
Waveform Trigger
The trigger tells the Test Tool when to start the waveform
trace. You can:
• select which input signal to use
• select which edge this should occur
• define the condition for a new update of the
waveform
The bottom line of the waveform area identifies the trigger
parameters in use. Trigger icons on the screen indicate
the trigger level and slope.
Note
The trigger settings are fixed for 3-phase power
measurements.
Set Trigger Level and Slope
For quick operation, use to automatically trigger on
nearly all signals. toggles between the Auto and
Manual mode. The current operating mode is shown in
the Information Area.
2. Push 1 to select (rise time). Observe that two
horizontal cursors are displayed.
3. Push 4 if only one trace is displayed and select
MANUAL or AUTO. AUTO automatically does steps
5 to 7. For two traces, select the required trace A
or B.
4. Use YZ to move the upper cursor to 100% of the
trace height. A marker is shown at 90%.
5. Push 2 to select the other cursor.
6. Use
7. Push 3 to disable the cursors.
YZ to move the lower cursor to 0% of the
trace height. A marker is shown at 10%.
The reading now shows the risetime from 10%-90%
of the trace amplitude and the voltage at the cursors
in relation to the zero icon (-).
Fluke recommends the VP41 10:1 Probe to measure high
frequency signals in circuits with high impedance. The
loading of the circuit by a 10:1 Probe is much lower than
that of a 1:1 Shielded Test Lead.
Probe attenuation and probe adjustment must be
observed when using a 10:1 Probe.
Probe Attenuation
The Probe attenuates the signal 10X. The example below
is for a Probe connected to input A.
To adapt the Test Tool’s voltage readout to this
attenuation:
1. Push to open the Scope and Meter button bar.
2. Push 3 to open the INPUT SETTINGS menu.
3. Use
4. Push to open the PROBE SELECT menu.
5. Use
6. Push to make the change.
Observe that the 10X attenuation of the Probe is
compensated in the voltage readout.
YZ to go to Select>.
YZ to highlight 10:1 V.
Probe Adjustment
The VP41 Probe is always adapted correctly to its inputs.
High frequency adjustment is not necessary.
Other 10:1 Probes however must be adjusted for optimal
High Frequency performance. See 10:1 Scope Probes for
information about how to adjust these Probes.
Power and Harmonics Mode
The Power and Harmonics mode offers:
• Single phase power measurements with waveform and
harmonics display
• Voltage RMS, Current RMS, frequency, and phase
measurements
• Active, apparent, and reactive power measurements
• Power factor, cos ϕ, and total harmonic distortion
measurements
This section is a step-by-step introduction to power and
harmonics measurements. It does not cover all of the
capabilities of the Test Tool but gives basic examples to
show how to use the menus and perform basic
operations.
To use the power and harmonics functions, connect the
voltage leads and current probe as shown in Figure 7
setup 2.
If the voltage probe on A and current probe on B
have not been selected before, complete Step 4 to
Step 10.
4. Push 3 to select the probe settings.
hxv26.eps
5. Use YZ to highlight SELECT… in Probe A group.
6. Push to open the Probe A menu.
7. Use
8. Push to make the change.
9. Push 3 to select the probe settings.
10. Use
11. Push to make the change.
YZ to highlight the Probe A type.
YZ to highlight the Probe B (current clamp)
type.
Other settings stay the same.
Volts/Amps/Watt Measurements
This function simultaneously shows the voltage and
current signal. Use this function to get a first impression
of the voltage and current signal before you examine the
signal in more detail with the other functions.
To select the type of measurement:
1. Push 2 to select the waveform display.
2. Push 1 to toggle between the Voltage/Current or
Harmonics are periodic distortions of voltage, current, or
power sine waves. A waveform can be considered a
combination of various sinewaves with different
frequencies and magnitudes. The contribution of each
component to the full signal is measured.
Harmonics power distribution systems are often caused
by non-linear loads such as switched mode DC power
supplies in computers, TVs, and adjustable speed motor
drives. Harmonics can cause transformers, conductors,
and motors to overheat.
In the Harmonics function, the Test Tool measures
harmonics to the 51
components, THD (Total Harmonic Distortion), and
K factor are measured.
You can display the harmonics of:
• Voltage measurements on Input A
• Current measurements on Input B
• Power measurements calculated from Voltage
measurements on Input A and Current
measurements on Input B.
st
. Related data such as DC
In the Harmonics mode the Test Tool always uses the
AUTO mode. The vertical sensitivity range and the time
base range are automatically adjusted to the most
suitable range for the applied input signal. The ranging
keys ( / / ) and are locked.
Input A is forced to measure voltage. Input B is forced to
measure current.
To make harmonics measurements:
1. Push 2 to select the harmonics display.
2. Push 1 to toggle between the voltage, current or
power readings.
3. Push 4 to turn on the cursor.
When the harmonics display with voltage measurements
is selected, the screen shows as in Table 6. For
harmonics display when current measurements are
selected, see Table 7. For harmonics display when watts
measurements are selected, see Table 8.
THD is the amount of harmonics in a signal as a percentage
of the total RMS value (THD%r) or as a percentage of the
fundamental (THD%f). It is a measure of the degree to which
a waveform deviates from a purely sinusoidal form. 0%
indicates that there is no distortion. You can select THD%r or
THD%f in the Settings menu (3).
The harmonics component as selected with the cursor. Use
WX to move the cursor. In the example screen this is the third
harmonic. The values to the right of this number will change
when the cursor is moved to another harmonic component.
The amount of the selected harmonic component in the
voltage signal as a percentage of the total RMS value
(THD%r) or as a percentage of the fundamental (THD%f). You
can select %r or %f in the Settings menu (3).
The phase angle between the harmonic component and the
fundamental voltage.
hxv29.eps
THD %f
Nr (3)
V Voltage of the harmonic component as selected by the cursor.
THD is the amount of harmonics in a signal as a percentage
of the total RMS value (THD%r) or as a percentage of the
THD %f
fundamental (THD%f). It is a measure of the degree to which
a waveform deviates from a purely sinusoidal form. 0 %
indicates that there is no distortion. You can select THD%r or
THD%f in the Settings menu (1).
40
hxv30.ep
KF
Nr (3)
A Current of the harmonic component as selected by the cursor.
%f
Deg
K-Factor indicates the losses in transformers due to harmonic
currents.
The harmonics component as selected with the cursor. Use
WX to move the cursor. In the example screen this is the third
harmonic. The values to the right of this number will change
when the cursor is moved to another harmonic component.
The amount of the selected harmonic component in the
current signal as a percentage of the total RMS value
(THD%r) or as a percentage of the fundamental (THD%f). You
can select %r or %f in the Settings menu (3).
The phase angle between the harmonic component and the
fundamental current.
W Power of the harmonic component as selected by the cursor.
%f
Deg
K-Factor indicates the losses in transformers due to harmonic
currents.
The harmonics component as selected with the cursor. Use
WX to move the cursor. In the example screen this is the third
harmonic. The values to the right of this number will change
when the cursor is moved to another harmonic component.
The amount of the selected harmonic component in the
current signal as a percentage of the total RMS value
(THD%r) or as a percentage of the fundamental (THD%f). You
can select %r or %f in the Settings menu (1).
The phase angle between the harmonic component and the
fundamental current.
If the harmonics bars screen is shown, you can zoom
vertically for a more detailed view. Use
or zoom out.
The scale at the left side changes when zooming in or
out.
YZ to zoom in
Fieldbus Mode
Fieldbuses are bi-directional, digital, serial control
networks used in process control and industrial
automation.
The Test Tool can indicate the status of the following
aspects of the OSI model Physical Layer:
• Voltage levels (bias, high level, low level)
• Bit width – baud rate
• Rise and fall time
• Distortion
The Test Tool can show the bus signal waveform in the
Eye-pattern mode, see page 47.
The Test Tool operates in full automatic (ranging and
triggering) mode. Test limits are preset, but can be
changed, see page 47.
For supported bus types and protocols see Table 9.
For extended information on Fieldbuses and fieldbus
measurement, see Appendix A of this manual.
Note
To check a suspected cable you can make
resistance measurements and capacitance
measurements using the Scope/Meter mode.
To do fieldbus measurements:
1. Push to open the MENU.
2. Use YZ to highlight BUSHEALTH.
3. Push to open the BUS HEALTH menu.
4. Use
5. Push to make the change.
6. Connect the inputs as shown in Figure 8, setup 4.
YZ to highlight the bus type.
Select User1 or User2 to create a customized set of
limits to test nonstandard bus systems. See page 48
for information about how to set the test limits.
Default settings are RS232 for User1 and Foundation
Fieldbus H1 for User2.
For bus types with additional options, a secondary
menu is available. Use
and to make the change.
The bus test screen shows the status of the various signal
properties. To open, go the main screen and push 3.
Information is represented in four columns, see Table 10.
Table 10. Field Bus Test Screen
Item Description
Signal property under test, for example, VHigh. Rows show each
A
ABCD
hxv33.eps
signal property and corresponding data. See Table 11 for a description
of the signal properties for the bus types.
Status indicator. See Table 12 for a description of the indicators.
B
Most recent measurement value, for example, 3.5 V.
C
--OL
Used low (LOW) and high (HIGH) test limits (LIMIT), for example 18.5
D
31.6V.
LIMIT *
N/A
indicates that no reading is available
indicates that the signal is out of the measurement range
(overload)
The * indicates that one or more of the limits are not set to
the default value.
Figure 12 shows the bus health indicator boundaries. The
high level voltage of a bus must be between +3.0 V (MIN)
and +15.0 V (MAX). Depending on the measurement
result, the displayed indicator will be:
f
d
e
Result is between 4.2 and 13.8V. (10 % of
12 V = 1.2 V)
Result is between 3 V and 4.2 V, or between
13.8 V and 15 V.
Result is <3 V or >15 V.
hxv34.eps
Figure 12. Bus Health Indicator Boundaries
How to View the Bus Waveform Screen
To view the waveform eye pattern of the bus voltage:
1. Push 3. The screen shows the eye pattern. The
screen shows the waveforms of one bit time
triggered on a positive, as well as, on a negative
edge in persistence mode.
2. Push 1 to clear the persisted waveforms and
restart to show the waveform.
3. Push to freeze the screen. Push again to
clear the persistence waveform and restart the
waveform eye pattern.
The Meter Recorder makes the Test Tool act as a
paperless recorder that collects a series of parameter
measurements over time and shows the result as a graph
or a trend-line on screen. This is most useful to
understand the change of individual parameters over time
or the influence of environmental changes like
temperature over time.
The Scope Recorder captures waveforms. The applied
input voltage is registered over time and the resulting
waveform is stored in a long memory record. This can be
used to capture intermittent problems. Deviations from
the original signal are stored as events that can be easily
viewed after recording without the need to check all
information.
Start and Stop Meter Recording
Before you record, apply a stable signal to input A and B.
Events are used to determine how often the
measured reading deviates from the initial reading
when recording starts. It is easy to see the time of a
deviation when you view the recording after it stops.
6. Use YZ to highlight Set Threshold.
7. Push and use YZ and to enter the
percentage deviation for meter readings.
8. Use
9. Push to accept the memory location.
10. Push 4 when done.
11. To start or stop a recording, push or 4.
The Test Tool continuously logs all readings to memory
and displays these as graphs. When both input A and
input B are on, the upper graph is input A.
YZ to highlight the memory type for recording
as either the internal memory of the Test Tool or an
SD memory card.
Note
The Test Tool beeps when an event occurs. If
no event is specified, a beep happens when a
new minimum or maximum value is detected.
hxv40.eps
The Recorder shows a graph derived from the MAIN
readings.
The other readings show the average (AVG), the
minimum (MIN), and the maximum (MAX) reading since
the Recorder start and the time of the most recent change
of a value.
Use the cursor to make precise digital measurements on
the plotted graphs. The display shows the measurement
results, the date, and the time at the cursor position. Each
result is a maximum and a minimum measurement.
To use cursors:
1. Push to stop the graph update and freeze the
screen.
2. Push 2 to open the RECORDING VIEW menu.
3. Use
4. Push to accept the change.
5. Push 4 to exit the menu.
6. Use WX to move the cursors.
YZ to highlight Cursor On.
hxv41.eps
The readings show a minimum and maximum value.
These are the minimum and maximum values of the
readings for the time period that represents one pixel on
the display.
By default, the display shows a compressed view of all
the data with minimum and maximum pairs for the interval
that corresponds with one pixel on the display.
To view uncompressed data in the normal view:
1. Push 2 to open the RECORDING VIEW menu.
2. Use YZ to highlight View Normal.
3. Press to accept the change.
To zoom in or zoom out on the logged data in normal
view, push . This button is a rocker switch. Use the
left (s) end to zoom in. Use the right end (ns) to zoom out.
When a cursor is on, zoom is centered on the area
around the cursor.
Events
Deviations from the initial readings specified in the
Recorder Settings menu as a percentage, are marked as
events.
To jump between the start of discrete events:
1. Push 3 to select Events < >.
2. Use WX to jump between events. The readings on
the top positions will mark the value at the start of the
event.
Scope Record Mode
The Scope Record mode shows all the waveform data as
a long waveform of each active input. This display mode
can be used to show intermittent events. Because of the
deep memory, recording can be done for a long period.
The Test Tool stores 1 sample/channel for each sample
time. Defining event thresholds allows you to quickly view
details of the signal that deviate from the normal signal.
Cursor Measurements, Zoom, and Events are available in
the Scope Record mode.
Before you record, apply a stable signal to input A and
input B.
Events are used to determine how often a waveform
deviates from the initial waveform when recording
starts. It is easy to see the time of a deviation when
you view the recording after it stops.
8. Use
9. Push and use YZ and to set the
10. Use YZ to highlight the memory type for recording
11. Push to accept the memory location.
12. Push 4 when done.
YZ to highlight Threshold.
percentage of deviation for time (relative to 1 period)
and the amplitude deviation (relative to peak-to-peak)
for waveforms. Threshold can be used for signals up
to 10 kHz.
as either the internal memory of the Test Tool or an
SD memory card.
13. To start or stop a recording, push or 4.
The Test Tool continuously logs all data to memory.
While recording, the display does not update since all
the processing capacity is needed for recording.
If no free memory locations are available, a message
pops up for you to overwrite the oldest data set.
To continue:
1. Push 3 to cancel the overwrite to the oldest data
set. You must delete one or more memory locations
and then save again. See Data Set Management for
more information.
2. Push 4 to overwrite the oldest data set.
Test Sequence
Use test sequences to set up the Test Tool for the most
often-used settings or a sequence of frequent tests.
To recall a setting marked with a test sequence number:
1. Push to open the menu.
2. Push 1 to open the TEST SEQUENCE menu.
3. Use YZ to highlight the setup. The selected test
sequence number is automatically the next number
after a previously selected number and helps you do
a sequence of tests. No cursor keys need to be used.
4. Push to accept the setup.
hxv44.eps
Only the data sets stored as a test sequence number
are visible in the TEST SEQUENCE menu. Other
data sets are visible when you select 3 (Recall).
Use Recall to easily compare the A and B waveforms with
previously measured waveforms. You can compare a
waveform of one phase with a waveform of another
phase or compare with a previously measured waveform
on the same test point.
To recall a reference waveform:
1. Push to open the menu.
2. Push 3 to open the RECALL MEMORY menu.
3. When an SD card in installed, use 1 to toggle
between Internal or SD card memory.
4. Push 2 to select the Setup and Waveform menu.
5. Use
6. Push to select the Setup and reference
YZ to highlight the memory location.
waveform.
The reference waveform shows on the screen as
gray. The reference waveform remains on screen
until a setting, such as auto/manual, attenuation, or
timebase, is changed.
software with an optical cable or wireless interface
•Tablet or smartphone using Fluke Connect with WiFi
interface
Optical Interface
Connect the Test Tool to a computer with a wired
connection that uses FlukeView
for Windows
®
. Use the Optically Isolated USB
Adapter/Cable (OC4USB) to connect a computer to the
OPTICAL PORT of the Test Tool.
For more information about FlukeView
software, see the FlukeView documentation.
®
ScopeMeter® software
®
ScopeMeter®
Wireless Interface
You can connect the Test Tool with a WiFi USB Adapter
to a computer, tablet, or smartphone that has a wireless
LAN interface.
To support wireless communication the Test Tool has a
port that can be used to insert a WiFi USB adapter. The
USB port is behind the battery door. See Figure 13.
1
Figure 13. WiFi USB Adapter
The battery door must be closed to operate the USB port.
A small angled connector is delivered with all versions of
the Test Tool to connect the adapter to the connector
behind the battery door.
To avoid loss of data, do one of the following before you
remove the battery pack:
• Store the data on a computer or a USB device.
• Connect the power adapter.
To replace the battery pack:
1. Turn off the Test Tool.
2. Remove all probes and test leads
3. Unlock the battery cover.
4. Lift the battery cover and remove it from the Test
Tool.
5. Lift one side of the battery pack and remove it from
the Test Tool.
6. Install a good battery pack.
7. Place the battery cover into position and lock.
10:1 Scope Probes
The 10:1 voltage probe (VP41) that is supplied with the
Test Tool (varies by model) is always adjusted correctly
and needs no further adjustment. You need to adjust
other 10:1 scope probes for optimal response.
XW Warning
To prevent possible electrical shock, fire, or
personal injury, use the BB120 Banana-toBNC adapter (delivered with the Test Tool) to
connect a 10:1 scope probe to the input of
the Test Tool.
To adjust probes:
1. Connect the 10:1 scope probe from the blue input B
jack to the red input A jack.
2. Use the red 4-mm banana adapter (delivered with
the probe) and the banana-to-BNC adapter (BB120).
See Figure 14.
8. Adjust the trimmer screw in the probe housing to
give an optimum square wave.
9. Push 4 to exit the menu.
Calibration Information
The Test Tool specifications are based on a 1 year
calibration cycle. Recalibration must be done by qualified
personnel. Contact your local Fluke representative for
more information about recalibration.
To find the firmware version and calibration date of your
Test Tool:
The User Information menu screen has information
about the model number with firmware version, the
serial number, the calibration number with latest
calibration date, installed (firmware) options, and
memory usage information.
6. Push 4 to exit the menu.
Replaceable Parts and Accessories
For complete service, disassembly, repair, and calibration information, see the Service Manual at www.fluke.com. Table 13 is a list of user-replaceable parts for the Test Tool models. To order replacement parts, contact your nearest service center. Table 14 is a list of optional accessories. See Figure 1 for an illustration of parts and accessories.
This section is information and tips on how to best use
the Test Tool.
Battery Life
For battery operation, the Test Tool conserves power by
shutting itself down. If you have not pressed a key for at
least 30 minutes, the Test Tool turns itself off
automatically.
Automatic power shutdown will not occur if Record is on,
but the backlight will dim. Recording continues if the
battery is low. Retention of memories is not jeopardized.
To save battery life without automatic power shutdown
you can use the display AUTO-off option. The display
turns off after the selected time (30 seconds or 5
minutes).
Note
If the power adapter is connected, automatic
power shutdown and the display AUTO-off
function is disabled.
Power Off Timer
By default, the power off timer is set to 30 minutes after the
last key press. To change the time to 5 minutes or turn off:
On delivery or after a reset, the Autoset function captures
waveforms ≥15 Hz and sets the input coupling to DC.
Note
Setting the Auto Set adjust to 1 Hz slows down
the Auto Set response. The display shows
LF-AUTO.
To configure Auto Set for capturing slow waveforms down
to 1 Hz:
1. Push to open the Menu.
2. Use
3. Push to open the USER OPTIONS menu.
4. Use
5. Push to open the USER > AUTOSET menu.
6. Use
7. Push to accept the change and exit the menu.
To configure Autoset to maintain the actual input coupling
(AC or DC), continue from step 5 above:
6. Use
7. Push to accept the change and exit the menu.
YZ to highlight USER OPTIONS.
YZ to highlight Autoset Settings.
YZ to highlight Search For Signals >1 Hz.
YZ to highlight Couplings Unchanged.
Grounding Guidelines
XW Warning
To prevent possible electrical shock, fire, or
personal injury, use only one COM (common)
connection
to COM
Incorrect grounding can cause problems. Use these
guidelines for proper grounding:
•Use the short ground leads when measuring DC or
AC signals on input A and input B. See Figure 8, item
4 on page 17.
•Use the unshielded black ground lead to COM
(common) for Ohm (Ω), Continuity, Diode, and
Capacitance measurements. See Figure 7, item 1 on
page 16.
•Use of the unshielded ground lead is also possible for
single or dual input measurements for waveforms with
a frequency up to 1 MHz. This may add some hum or
noise to the waveform display due to the unshielded
ground lead.
Normal ................................................................. Captures up to 25 ns glitches and displays analog-like persistence waveform.
Smooth ................................................................ Suppresses noise from a waveform.
Envelope ............................................................. Records and displays the minimum and maximum of waveforms over time.
Auto Set (Connect-and-View)
Continuous fully automatic adjustments of amplitude, time base, trigger levels, trigger gap, and hold-off. Manual override by user
adjustment of amplitude, time base, or trigger level.
Dual Input Meter
The accuracy of all measurements is within ±(% of reading + number of counts) from 18 °C to 28 °C.
Add 0.1x (specific accuracy) for each °C below 18 °C or above 28 °C. For voltage measurements with 10:1 probe, add probe uncertainty
+1 %. More than one waveform period must be visible on the screen.
Power Factor (PF) ............................................... ratio between Watts and VA
Range ............................................................. 0.00 to 1.00
Watt ..................................................................... RMS reading of multiplying corresponding samples of input A (volts) and input B
Full Scale reading ........................................... 999 counts
VA ....................................................................... Vrms x Arms
Full Scale Reading .......................................... 999 counts
VA Reactive (VAR) .............................................
Full Scale Reading .......................................... 999 counts
Vpwm
Purpose ............................................................... to measure on pulse width modulated signals, like motor drive inverter outputs
Principle .............................................................. readings show the effective voltage based on the average value of samples over a whole
Accuracy ............................................................. as Vrms for sinewave signals
Full Scale Reading .............................................. 5000 counts
Measurement Current ......................................... 500 nA to 0.5 mA, increases with increasing ranges
Advanced Meter Functions
Zero Set
Set actual value to reference
Fast/Normal/Smooth
Meter settling time Fast: 1 s @ 1 μs to 10 ms/div.
Meter settling time Normal: 2 s @ 1 μs to 10 ms/div.
Meter settling time Smooth: 10 s @ 1 μs to 10 ms/div.
AutoHold (on A)
Captures and freezes a stable measurement result. Beeps when stable. AutoHold works on the main meter reading, with thresholds of
1 Vpp for AC signals and 100 mV for DC signals.
Fixed Decimal Point .............................................. with attenuation keys.
Cursor Readout (124B, 125B)
Sources
A, B
Single Vertical Line
Average, Min and Max Readout
Average, Min, Max and Time from Start of Readout (in ROLL mode, instrument in HOLD)
Min, Max and Time from Start of Readout (in RECORDER mode, instrument in HOLD)
Harmonics values in POWER QUALITY mode.
Dual Vertical Lines
Peak-Peak, Time Distance and Reciprocal Time Distance Readout
Average, Min, Max and Time Distance Readout (in ROLL mode, instrument in HOLD)
Transition Time, 0 %-Level and 100 %-Level Readout (Manual or Auto Leveling; Auto Leveling only possible in Single Channel Mode)
Accuracy
As Oscilloscope Accuracy
Recorder
The recorder captures meter readings in Meter Recorder mode or continuously captures waveform samples in Scope Recorder mode. The
information is stored on internal memory or on optional SD card with the 125B or 124B.
The results are displayed as Chart recorder display that plots a graph of min and max values of Meter measurements over time or as a
waveform recorder display that plots all the captured samples.
Meter Readings
Measurement Speed ........................................... maximum 2 measurements/s
Record Size ......................................................... 2 M readings for 1 channel (400 MB)
Recorded Time Span .......................................... 2 weeks
Maximum number of events ................................ 1024
Waveform record
Maximum sample rate ......................................... 400 K sample/s
Record Size Internal memory .............................. 400 M samples
Recorded Time Span internal memory ............... 15 minutes at 500 μs/div
125B, 124B
Record Size SD card ................................... 15 G samples
Recorded Time Span SD card .................... 11 hours at 500 μs/div
Maximum number of events ................................ 64 events on 1 channel
Optically isolated USB to PC/laptop .................... Transfer screen dumps (bitmaps), settings and data using OC4USB optically isolated
USB adapter/cable, (optional), using FlukeView
Optional WiFi Adapter ......................................... Fast transfer of screen dumps (bitmaps), settings and data to PC/laptop, tablet,
smartphone, etc. A USB port is provided for attaching the WiFi Adapter. Do not use the
USB port with a cable for safety reasons. The USB port is disabled when the battery door
is open.
®
ScopeMeter® software for Windows®).
Environmental
Environmental ....................................................... MIL-PRF-28800F, Class 2
Temperature
Operating and charging ....................................... 0 °C to 40 °C (32 °F to 104 °F)
Operating ............................................................ 0 °C to 50 °C (32 °F to 122 °F)
Storage ................................................................ -20 °C to 60 °C (-4 °F to 140 °F)
Humidity
Operating
@ 0 °C to 10 °C (32 °F to 50 °F) ..................... noncondensing
@ 10 °C to 30 °C (50 °F to 86 °F) ................... 95 %
@ 30 °C to 40 °C (86 °F to 104 °F) ................. 75 %
@ 40 °C to 50 °C (104 °F to 122 °F) ............... 45 %
Storage
@ -20 °C to 60 °C (-4 °F to 140 °F) ................ noncondensing
Altitude
Operating CAT III 600V ....................................... 3 km (10 000 feet)
Operating CAT IV 600V ...................................... 2 km (6 600 feet)
Storage ................................................................ 12 km (40 000 feet)
Vibration ................................................................ MIL-PRF-28800F, Class 2
Shock ..................................................................... 30 g maximum
Electromagnetic Compatibility (EMC)
International ........................................................ IEC 61326-1: Industrial
CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or uses conductively-coupled
radio frequency energy that is necessary for the internal function of the equipment
itself.
Class A: Equipment is suitable for use in all establishments other than domestic and
those directly connected to a low-voltage power supply network that supplies
buildings used for domestic purposes. There may be potential difficulties in ensuring
electromagnetic compatibility in other environments due to conducted and radiated
disturbances.
Emissions that exceed the levels required by CISPR 11 can occur when the
equipment is connected to a test object.
Korea (KCC) ....................................................... Class A Equipment (Industrial Broadcasting & Communication Equipment)
Class A: Equipment meets requirements for industrial electromagnetic wave
equipment and the seller or user should take notice of it. This equipment is intended
for use in business environments and not to be used in homes.
USA (FCC) .......................................................... 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
Wireless Radio with Adapter
Frequency Range ............................................... 2412 MHz to 2462 MHz
Output Power ...................................................... <100 mW
The Fluke 12xB series, including standard accessories, conforms to the EEC directive 2004/108/EC for EMC immunity, as
defined by EN61326-1: 2006, with the addition of the table below.
Trace disturbance with STL120-IV
Frequency Field strength
80 MHz to 1 GHz10 V/m1 V/div to 200 V/div500 mV/div
1.4 GHz to 2 GHz3 V/mAll ranges-
2 GHz to 2.7 GHz1 V/mAll ranges-
(-) = no visible disturbance
Ranges not specified may have a disturbance of >10 % of full scale.