Teledyne Lecroy Everywhereyoulook CP030B User manual

Current Probes
User
Manual
CP
030B, CP150B

CP030B and CP150B Current Probes User Manual
© 2023 Teledyne LeCroy, Inc. All rights reserved.
Teledyne LeCroy is a registered trademark of Teledyne LeCroy, Inc. Other product
or brand names are trademarks or requested trademarks of their respective
holders. Information in this publication supersedes all earlier versions.
Specifications are subject to change without notice.
Users are permitted to duplicate and distribute Teledyne LeCroy documentation for
internal training purposes only. Resale or unauthorized duplication of Teledyne
LeCroy documentation materials is strictly prohibited.
CP***B-probes-manual-eng_05oct23.pdf
October, 2023

User Manual
i
Contents
Introduction ................................................................................................................... 1
Safety Instructions......................................................................................................... 2
Symbols................................................................................................................................................2
Precautions ..........................................................................................................................................2
Specifications ................................................................................................................ 4
Warranted Characteristics ................................................................................................................4
Nominal Characteristics....................................................................................................................4
Typical Characteristics ......................................................................................................................5
Environmental Characteristics .........................................................................................................5
Physical Characteristics ....................................................................................................................6
Safety Ratings .....................................................................................................................................6
Maximum Input Current vs. Frequency ..........................................................................................7
Insertion Impedance vs. Frequency ................................................................................................8
Amplitude vs. Frequency...................................................................................................................9
Operation..................................................................................................................... 10
Connecting to the Test Instrument .............................................................................................. 11
Connecting to the Test Circuit....................................................................................................... 11
Operating with an Oscilloscope..................................................................................................... 12
Performance Verification ............................................................................................. 15
Preliminary Procedure..................................................................................................................... 15
Functional Check ............................................................................................................................. 15
Test Equipment Required............................................................................................................... 16
Check LF Accuracy CP030B .......................................................................................................... 17
Check LF Accuracy CP150B .......................................................................................................... 18
CP______ Test Record...................................................................................................................... 20
Care and Maintenance ................................................................................................. 21
Cleaning ............................................................................................................................................. 21
Calibration Interval........................................................................................................................... 21
Service Strategy ............................................................................................................................... 21
Troubleshooting............................................................................................................................... 21
Returning a Product for Service.................................................................................... 22

CP030B and CP150B Current Probes
ii
Technical Support ........................................................................................................ 23
Live Support and Service.................................................................................................................23
Resources ..........................................................................................................................................23
Certifications................................................................................................................ 24
European Council .............................................................................................................................24
United Kingdom ................................................................................................................................25
China ...................................................................................................................................................25
Australia & New Zealand.................................................................................................................26
Warranty ...................................................................................................................... 27

User Manual
1
Introduction
The CP series current probes are designed for easy, highly accurate current
measurements. The probes utilize a combination of Hall-effect and transformer
technology to enable measurements to be made on DC, AC and impulse currents
over a wide bandwidth range with over-current protection.
With the ProBus interface, the probe becomes an integral part of the measuring
instrument. The bandwidth limit, Auto Zero and Degauss functions are all
controlled from the instrument’s touch screen user interface. The interface
provides power to the probe, so no external power supply is needed.
CP current probes are compatible with most Teledyne LeCroy oscilloscopes with a
ProBus interface running MAUI™ firmware version 10.4.x.x or later.
Contact your local service center to determine whether the oscilloscope may be
made compatible with the probes with appropriate software upgrades.
NOTE: CP probes cannot be used with the AP-1M adapter to achieve 1 MΩ
coupling.

Current Probes
2
Safety Instructions
Follow these instructions to keep the probe operating in a correct and safe
condition. Observe generally accepted safety procedures in addition to the
precautions specified here. The overall safety of any system incorporating this
product is the responsibility of the assembler of the system.
Symbols
These symbols appear on the probe body or in documentation to alert you to
important safety considerations.
WARNING, possibility of electric shock or burn.
CAUTION of damage to probe or instrument, or WARNING of hazard to
health. Attend to the accompanying information to protect against
personal injury or damage. Do not proceed until conditions are fully
understood and met.
Do not apply around or remove from UNINSULATED HAZARDOUS LIVE
conductors which may render electric shock, electric burn, or arc flash.
Equipment protected by double insulation or reinforced insulation.
CAUTION, hot surface.
Precautions
Comply with the following safety precautions to avoid personal injury or
damage to your equipment:
Use only as specified. The probe is intended to be used only with compatible
Teledyne LeCroy instruments. Using the probe and/or the equipment it is
connected to in a manner other than specified may impair the protection
mechanisms.
Do not use the probe for measurements on Mains circuits. The probe should only
be applied around or removed from insulated, limited-energy circuit conductors
that are not directly connected to the mains.
Do not overload; observe all ratings. To avoid electric shock or fire, do not connect
the current probe to any wire that carries voltages or currents that exceed the
ratings of the probe.

User Manual
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Connect and disconnect properly. Connect the probe to the test instrument before
connecting to the circuit/conductor being measured.
Avoid damaging the cable through excessive bending.
Never install or remove the probe on bare conductors which are energized. The
transformer core and shield are grounded but not insulated and may contact the
conductor when the locking lever is open.
Be careful not to damage the insulation surface when making measurements.
Before clamping to the conductor being measured, check that the insulation on the
conductor is undamaged, and take care not to damage the insulation when
clamping the conductor. Any damage to the insulation could cause an electric
shock.
Use only indoors within the operational environment listed. Do not use in wet or
explosive atmospheres.
Do not remove the probe's casing. Touching exposed connections may result in
electric shock.
Keep product surfaces clean and dry.
Comply with the maximum input current vs. frequency derating when measuring
current that includes a high frequency component. Using the probe at high
frequencies or in strong magnetic fields may cause the device to become
abnormally hot, resulting in fire, equipment damage or burns.
Do not operate with suspected failures. Before each use, inspect the probe and
accessories for any damage such as tears or other defects in the probe body, cable
jacket, accessories, etc. If any part is damaged, cease operation immediately and
sequester the probe from inadvertent use.
NOTE: Depending on the amplitude and frequency of the current being measured,
the sensor head may emit a resonant sound. This sound may also occur during
demagnetizing operation, but it does not represent a malfunction (device failure).

Current Probes
4
Specifications
For the most current specifications, see the card included with the product.
Specifications are subject to change without notice.
Warranted Characteristics
CP030B
CP150B
Amplitude
Accuracy
±1% of reading to 30 Arms
±2% of reading to 50 Apeak
±1% of reading to 150 Arms
±2% of reading to 300 Apeak
Bandwidth
(probe only) DC to 50 MHz DC to 10 MHz
Nominal Characteristics
CP030B
CP0150B
Max Continuous
Input Current
30 Arms at 0.1 V/A
5 Arms at 1V/A
150 Arms at 0.01V/A
30 Arms at 0.1V/A
Max Peak
Current*
50 Apeak
non-continuous
300 Apeak
non-continuous
Intended Output
Load 1 MΩ
Sensitivity
1 mA/div to
50 A/div
100 mA/div to
100 A/div
Measured
Conductors Insulated conductors only
* Peak pulse width ≤10 µs.

User Manual
5
Typical Characteristics
CP030B
CP150B
Output Voltage
1 V/A and 0.1 V/A
0.1 V/A and 0.01 V/A
Sensitivity
Temperature
Coefficient
± 2% or less (0 ⁰C to +40 ⁰C) +2%, -6% (0 ⁰C to +40 ⁰C)
Noise at
20 MHz BW
≤150 µArms ≤ 1.8 mArms
Rise Time
≤ 7ns
≤ 35 ns
Environmental Characteristics
CP030B
CP0150B
Operating
Temperature
0 ⁰C to 40 ⁰C
Operating
Relative
Humidity (RH)
≤ 80% (non-condensing)
Storage
Temperature
-10 ⁰C to 50 ⁰C
Storage
Relative
Humidity (RH)
≤ 80% (non-condensing)
Maximum
Altitude
2000 m
Effect in an
External DC/
60 Hz, 400 A/m
Magnetic Field
Max 5 mA Max 150 mA

Current Probes
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Physical Characteristics
CP030B
CP150B
Probe Head
Length
176.15 mm (6.9 inch) 173.82 mm (6.8 inch)
Probe Head
Width
19.8 mm (0.78 inch) 30.2 mm (1.19 inch)
Probe Head
Height
39.5 mm (1.56 inch) 67.74 mm (2.67 inch)
Maximum
Diameter of
Conductors
Measured
5 mm (0.2 inch) 20 mm (0.79 inch)
Cable Length
1.5 m (4.9 feet)
2 m (6.5 feet)
Weight
236 g (0.52 lbs)
490 g (1.08 lbs)
Safety Ratings
Rating
Definition
(per EN IEC 61010-2-032:2021)
Probe
Designation
Type D
Probe is intended to be applied
around or removed from
insulated conductors only.
Measurement
Category
(CAT)
No rated measurement category
Probe is not intended for
measurements on circuits
directly connected to Mains
supply. Not rated for
measurements within CAT II, III
or IV.
Safe Voltage
Rating
Use only on fully insulated
conductors
Probe is not rated for
measurements on uninsulated
conductors.
Pollution
Degree
2
Use only in an operating
environment where normally only
dry, non-conductive pollution
occurs. Temporary conductivity
caused by condensation should
be expected.

User Manual
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Maximum Input Current vs. Frequency
CP030B
CP150B

Current Probes
8
Insertion Impedance vs. Frequency
CP030B
CP150B

User Manual
9
Amplitude vs. Frequency
CP030B
CP150B

Current Probes
10
Operation
NOTE: Operation of the probe as described requires software version 10.4.x.x or
higher. To confirm the version installed, choose Utilities > Utilities Setup from the
oscilloscope menu bar, then open the Status tab.
The sensor head is a precision assembly consisting of a molded component with a
ferrite core and a Hall effect element. It may be damaged if subjected to sudden
changes in temperature, mechanical strain or shock, or application of static
electricity.
The mating surfaces of the sensor are precision ground and should be treated with
care. If there is any type of dust or dirt on the mating surfaces of the sensor head,
measurements may be impaired.
Accurate measurements may not be possible in locations subject to strong
magnetic fields such as transformers and high-current conductors, or in locations
subject to strong external electric fields.
WARNING: Comply with the probe derating when measuring current that
includes a high frequency component. Never measure any current that
exceeds the rated current. Using the probe at high frequencies or in
strong magnetic fields may cause the probe head to become abnormally
hot, resulting in equipment damage or personal injury.
CAUTION: Do not touch the probe head after disconnecting from the
circuit until it has had sufficient time to cool. Using the probe near the
upper limits for current and ambient temperature for extended lengths of
time may cause the probe head surface to become hot to the touch.
CAUTION: Do not use this probe to measure Mains circuits. Using the
probe on uninsulated hazardous live conductors may result in electric
shock, burn, or arc flash.
CAUTION: Never use this probe on bare conductors. The core and shield
are grounded, and any voltage applied to the conductor may cause
damage the probe or the circuit under test.
Always connect the probe to a
powered-on oscilloscope before clamping it to an active conductor.
Failure to do so may damage the probe or test instrument.

User Manual
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Connecting to the Test Instrument
The probe has been designed for use with the Teledyne LeCroy instruments
equipped with the ProBus interface. When you attach the probe output connector
to the instrument’s input connector, the instrument will:
•Recognize the probe model
•Set the input termination to 1 MΩ
•Activate the probe control functions in the touch screen user interface.
Connecting to the Test Circuit
The probe has been designed with a movable split core, eliminating the need to
break the conductor for the core to slip around the conductor. To connect:
1. Pull back the slider so that the clamp opens.
2. Align the sensor so that the current direction indicator corresponds to the
direction of current flow in the conductor.
3. Close the slider on the sensor head to the locked position until the
“UNLOCK” indicator disappears.
4. Verify that the opening lever is firmly locked and the clamp is securely
closed.
Direction of Current
Direction of
Current

Current Probes
12
Operating with an Oscilloscope
When connected to a Teledyne LeCroy oscilloscope, the displayed scale factor and
measurement values will be automatically adjusted to account for the effective
gain of the probe. A/div, Offset, and Coupling, and Bandwidth (BWL) are controlled
from the Channel setup (Cn) dialog.
Channel setup dialog with Probe dialog behind it.
The probe’s attributes are shown on the Probe dialog, which appears behind the
Channel dialog when a probe is detected. The Probe dialog also contains controls
for Auto Zero and Degauss.
Probe dialog.
PROBE A/DIV AND ATTENUATION
The front panel Volts/div knob controls the oscilloscope’s scale factor and the
probe’s internal attenuation to give full available dynamic range (see Nominal
Characteristics table p.4 ). Alternatively, A/div may be controlled from the Channel
setup dialog. There are two options as to how the probe will set attenuation relative
to the oscilloscope’s A/div setting:
Auto will automatically raise the attenuation when the A/div setting is higher than
the attenuation threshold of the probe, or lower attenuation when the A/div setting
is below the threshold. As a result, the probe can automatically adjust attenuation
to properly view the input waveform. The Auto attenuation thresholds are:
•CP030B: 500 mA/div
•CP150B: 2 A/div
Lock to High locks the attenuation setting to the highest attenuation, regardless of
the A/div setting. Maintaining a high attenuation will allow small signals on a larger
current waveform to be accurately measured.

User Manual
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BANDWIDTH LIMIT
The CP030B is capable of switching from Full (maximum bandwidth) to 20 MHz
bandwidth by changing the Bandwidth setting on the Channel dialog. The CP150B
probe is limited to 20 MHz bandwidth.
AC COUPLING
In general, using offset to adjust a DC current on the screen is the preferred
method to measure transient signals in the presence of a larger DC currents. The
offset function has limits that will cause a signal that is beyond the linear operating
range of the probe to go off the screen, preventing measurement errors.
There are times, however, when it is convenient to use AC coupling to remove the
DC component of the measured signal from the measurement. Selecting AC
coupling on the Channel dialog uses the oscilloscope AC coupling at the probe
output to remove any steady state value from the displayed current.
NOTE: Since this AC coupling is on the probe output, DC current beyond the linear
range of the probe will cause the probe to saturate and make the displayed
waveform inaccurate. It is important not to exceed the maximum linear input
values when using AC coupling.
The maximum linear DC input current is:
Model
Maximum Linear DC Input Current
CP030B
30 A at 0.1 V/A sensitivity (>500 mA/div)
5 A at 1 V/A sensitivity (>500 mA/div)
CP150B
150 A at 0.01 V/A sensitivity (>2 A/div)
30 A at 0.1 V/A (≤2 A/div)

Current Probes
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AUTO ZERO
After several minutes of warm-up, or when the probe is exposed to a large shift in
ambient temperature, some DC offset drift may occur. The Probe dialog
incorporates an Auto Zero function to remove the DC offset from the current
probe. Auto Zero must be invoked by the user. Open the Probe dialog and touch
Auto Zero.
DEGAUSS
If the probe has been magnetized by external magnetic field or by excessive input,
the core can be demagnetized by degaussing. The demagnetizing process takes
about 5 seconds and should always be performed before taking a measurement.
Without clamping the probe around a conductor, slide the opening lever to close
and lock the probe. Open the Probe dialog and touch Degauss.
An Auto Zero is automatically performed as part of the degauss cycle.

User Manual
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Performance Verification
Performance verification can be used to verify the warranted characteristics of the
probe. The recommended calibration interval for Current Probes is one year. The
complete performance verification procedure should be performed as the first step
of annual calibration. Performance verification can be completed without removing
the probe covers or exposing the user to hazardous currents. Test results can be
recorded on a photocopy of the Test Record provided.
The warranted characteristics of the probe are valid at any temperature within the
Environmental Characteristics listed in the Specifications. However, some of the
other test equipment used to verify the performance may have environmental
limitations required to meet the accuracy needed for the procedure. Make sure that
the ambient conditions meet the requirements of all the test instruments used in
his procedure.
Preliminary Procedure
1. Connect the probe to the C1 input of the instrument and completely close
the probe slider.
2. Turn on the instrument and allow at least 30 minutes warmup time for the
probe before performing the verification procedure.
3. Turn on the other test equipment and allow these to warm up for the time
recommended by the manufacturer.
4. While the instruments are reaching operating temperature, make a
photocopy of the Performance Verification Test Record and fill in the
necessary data.
Functional Check
This procedure verifies the basic operation of the probe functions. It is
recommended to perform it prior to the Check LF Accuracy procedure.
1. Open the C1 setup dialog and confirm that the bandwidth is set to Full
(BWL OFF).
2. Verify that the probe is sensed and the probe dialog appears behind the C1
setup dialog.
3. Open the probe dialog and touch Degauss, then OK.
4. Confirm that the message "Performing Degauss on CPxx-xx...." is
displayed in the message bar and that no error messages are displayed.

Current Probes
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Test Equipment Required
The following table lists the test equipment (or equivalents) which are required for
performance verification of the CP series current Probes. Because the input and
output connector types may vary on different brands and models of test
instruments, additional adapters or cables may be required.
Description Minimum Requirements Example Equipment
Wide Band Oscilloscope
200 MHz bandwidth
ProBus interface
Teledyne LeCroy WaveSurfer
4000HD
Digital Multimeter (2)
DC: 0.1% Accuracy
5½ digit resolution
Agilent 34401A
Fluke 8842A-09
Function Generator
50 Hz sine wave output 3
Vrms into 50Ω
Teledyne Test Tools
T3AFG5
Stanford Research Model
DS340
Calibration Fixture
100 turn loop in series with
0.5Ω ±0.1% resistor with
sense terminals
500 turn loop in series with
0.5Ω ±0.1% resistor with
sense terminals
Teledyne LeCroy
CP030-CF02
Teledyne LeCroy
CP150-CF02
Calibration Fixture
ProBus Extension Cable
Teledyne LeCroy
PROBUS-CF01
Banana Plug Adapter
Female BNC to Dual
Banana Plug
Pomona 1269
Patch Cables (4)
Male Banana to Male
Banana, 12"
Pomona B-12-0 (black)
Pomona B-12-2 (red)
BNC Adapter
BNC Male to Dual Banana
Jack
Pomona 1296