Teledyne LeCroy high voltage probes are distinguished by their exceptional common-mode rejection ratio (CMRR) and signal fidelity and high accuracy. Current probes and current sensor adapters are also available to provide precise AC, DC and impulse current measurements.

Read Selecting Best Probe in 5 Minutes App Note
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Use Our Selection Guide to Explore the Best Probe for You

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Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Gate drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe supplied with Oscilloscope
Low-side gate drive signals only. Board REF = ScopeGND. High attenuation = more noise.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-HCM Series
Likely best overall performer with very reasonable CMRR and low tip capacitance
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series (Si) or DL-ISO Series (SiC/GaN)
Might have better performance but maybe not worth high price. CMRR advantage not as helpful at 48 Vdc

Conduction loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe supplied with Oscilloscope
Suitable for use on low-side device only
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-HCM Series
Good performance, best value
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series (Si) or DL-ISO Series (SiC/GaN)
Cost is very high for capability provided
Probe noise will be higher than DL-HCM at this voltage range

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
AP033 or DL-HCM Series
Probes with gain (AP033) may perform acceptably but may not meet common-mode needs. Otherwise, performance likely borderline ok.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series (Si) or DL-ISO Series (SiC/GaN)
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-HCM Series
Low attenuation means low additive noise with very small signals.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series (Si) or DL-ISO Series (SiC/GaN)
Benefits of optical isolation less apparent and less required at lower bus voltages.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-HCM Series
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series (Si) or DL-ISO Series (SiC/GaN)
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope
High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-HCM Series
Low attenuation means low additive noise with very small signals.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
DL-HCM Series
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
DL-HCM Series
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Gate drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe Supplied with Oscilloscope, PPE or HVP Series
Low-side gate drive signals only. Board REF = Scope GND. High attenuation = more noise.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD310x models)
Circuit loading may be an issue in some cases.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lowest tip capacitance and loading, best CMRR.

Conduction loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
PPE or HVP Series
Suitable for use on low-side device only.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Good performance, best value.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
DL-ISO Series
Cost is very high for capability provided.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD310x models)
Probe attenuation too high and signal amplitude likely too low for a good measurement.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD310x models)
High attenuation means high additive noise with very small signals.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lower attenuation will generally result in lower additive noise.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive HV Single-ended,
Ground-referenced

Active HV Differential,
High-attenuation isolated

Active
Single-ended,
Fiber-optic Isolated probe

Gate Drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe Supplied with Oscilloscope, PPE or HVP Series
Low-side gate drive signals only. Board REF = Scope GND. High attenuation = more noise.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
Circuit loading may be an issue in some cases. Bandwidth likely too low for GaN.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-ISO Series
Lowest tip capacitance and loading, best CMRR.

Conduction Loss

do not use
Single-ended ground-referenced design will limit utility in this application.
do not use
Single-ended ground-referenced design will limit utility in this application.
do not use
Single-ended ground-referenced design will limit utility in this application.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
PPE or HVP Series
Suitable for use on low-side device only.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
Circuit loading may be an issue in some cases. Bandwidth likely too low for GaN.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-ISO Series
Best probe CMRR at high frequencies is beneficial for fast WBG slew rates

 
 
Application

Passive HV Single-ended,
Ground-referenced

Active HV Differential,
High-attenuation isolated

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD3220)
Probe attenuation too high and signal amplitude likely too low for a good measurement.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
Single-ended ground-referenced design will limit utility in this application.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
High attenuation means high additive noise with very small signals.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lower attenuation will generally result in lower additive noise.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3220)
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x or HVD32xx)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability
High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x or HVD32xx)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
DL-HCM Series
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
HVD Series (HVD310x or HVD32xx)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Gate drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe Supplied with Oscilloscope, PPE or HVP Series
Low-side gate drive signals only. Board REF = Scope GND. High attenuation = more noise.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD310x models)
Circuit loading may be an issue in some cases.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lowest tip capacitance and loading, best CMRR.

Conduction loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
PPE or HVP Series
Suitable for use on low-side device only.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD310x models)
Good performance, best value.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
DL-ISO Series
Cost is very high for capability provided.

 
 
Application

Passive HV Single-ended,
Ground-referenced

Active HV Differential,
High-attenuation isolated

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD3206 or HVD3220)
Probe attenuation too high and signal amplitude likely too low for a good measurement.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
Single-ended ground-referenced design will limit utility in this application.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
High attenuation means high additive noise with very small signals.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lower attenuation will generally result in lower additive noise.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3220)
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability
High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active HV Differential,
High-attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Gate drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe Supplied with Oscilloscope, PPE or HVP Series
Low-side gate drive signals only. Board REF = Scope GND. High attenuation = more noise.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
Circuit loading may be an issue in some cases. Bandwidth likely too low for GaN.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-ISO Series
Lowest tip capacitance and loading, best CMRR.

Conduction loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
PPE or HVP Series
Suitable for use on low-side device only.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
Circuit loading may be an issue in some cases
Bandwidth likely too low for GaN
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
DL-ISO Series
Best probe CMRR at high frequencies is beneficial for fast WBG slew rates

 
 
Application

Passive HV Single-ended,
Ground-referenced

Active HV Differential,
High-attenuation isolated

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD3220)
Probe attenuation too high and signal amplitude likely too low for a good measurement.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
Single-ended ground-referenced design will limit utility in this application.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3220)
High attenuation means high additive noise with very small signals.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO Series
Lower attenuation will generally result in lower additive noise.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3220)
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO Series or DL-ISO Series
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
Passive Probe Supplied with Oscilloscope, PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3206 or HVD3220)
Best solution in all cases
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Gate Drive

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Passive Probe Supplied with Oscilloscope, PPE or HVP Series
Low-side gate drive signals only. Board REF = Scope GND. High attenuation = more noise.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3605)
Circuit loading may be an issue in some cases. Attenuation will be high, resulting in more noise in the measurement. Bandwidth might be too low for SiC.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO or DL-ISO Series
Lowest tip capacitance and loading, best CMRR.

Conduction Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.

Switching Loss

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
PPE or HVP Series
Check ratings of probe for suitability. Suitable for use on low-side device only.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3605)
Good performance, best value. Be sure Vpk-pk requirement doesn’t exceed rated range.
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Voltage range required generally exceeds probe capabilities.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
Differential,
Attenuation Isolated probe

Active
Single-ended,
Fiber-optic Isolated probe

Series/Shunt Resistor

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Cannot measure voltage drop across resistor with ground-referenced probe.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD3605)
Probe attenuation too high and signal amplitude likely too low for a good measurement.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO or DL-ISO Series
Low signal amplitude may still result in marginal measurement.

Sensor Signal

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
safe but not suitable
While the probe will provide a result and will not be damaged inmaking the measurement, most users would find the probe does not work well in this application.
HVD Series (HVD3605)
Very high attenuation means very high additive noise with very small signals.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVFO or DL-ISO Series
Lower probe attenuation will generally result in lower additive noise.

Discrete Components

do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Single-ended ground-referenced design will limit utility in this application.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3605)
Best solution in all cases
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVFO or DL-ISO Series
Cost is very high for capability provided. Voltage range required may exceed probe capability.

 
 
Application

Passive
HV Single-ended,
Ground referenced probe

Active
HV Differential,
High-attenuation isolated

Active
Single-ended,
Fiber-optic Isolated probe

Line Side (AC) Input

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
PPE Series, or HVP Series
Check ratings of probe for suitability. Line-neutral (ground-referenced) voltage probing only – cannot probe line-line.
caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
HVD Series (HVD3605)
Be sure that Vpk-pk requirement doesn’t exceed differential voltage range
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Voltage range required generally exceeds probe capabilities.

DC Bus/Link

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3605)
Best solution in all cases
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Voltage range required generally exceeds probe capabilities.

Inverter/Drive PWM Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
PPE Series, or HVP Series
Check ratings of probe for suitability. Line-reference voltage probing only – cannot probe line-line. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3605)
Best solution in all cases
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Voltage range required generally exceeds probe capabilities.

DC-DC Converter HV Input/Output

caution
There are some compromises in the performance of the probe in this application, though some users may find the probe works fine for them.
PPE Series, or HVP Series
Check ratings of probe for suitability. High attenuation, could be noisy. Board REF must be able to be connected to scope GND.
Best option
This is the perfect probe for the application. There are few issues with its use, and it has been optimized in price and performance for this application.
HVD Series (HVD3605)
Best solution in all cases
do not use
The probe should absolutely not be used in this application as damage to the probe, oscilloscope or device under test (DUT) may occur, or harm may come to the operator.
Voltage range required generally exceeds probe capabilities.

HVD: High Voltage Differential Probes

The HVD3000A series high voltage differential probes provide high CMRR over a broad frequency range to simplify the measurement challenges found in noisy, high common-mode power electronics environments. The probe’s design is easy-to-use and enables safe, precise high voltage floating measurements.

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Superior Performance

  • 1 kV, 2 kV, 6 kV CAT safety rated models
  • Widest differential voltage ranges available – up to 7.6 kV
  • ProBus interface and wide oscilloscope compatibility

Exceptional CMRR and Bandwidth

  • 65 dB CMRR at 1 MHz - 50x better than competitive probes
  • Up to 400 MHz bandwidth
  • Best signal fidelity - lowest noise and overshoot

Highest Precision

  • Best gain accuracy – 1%
  • Autozero with auto disconnect switch
  • High offset capability at both high and low attenuation

DL-ISO: High Voltage Optically Isolated Probes

The DL-ISO 1GHz probe enables highest confidence in GaN and SiC device characterization with highest accuracy, best signal fidelity, and comprehensive connectivity.

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Highest accuracy

  • 1.5% system accuracy
  • Precision Gain Calibration
  • High 160 dB CMRR

Best Signal Fidelity

  • Most faithful representation of the signal
  • Low probe loading and minimal overshoot
  • 435 ps rise time

Probe Compare: DL-ISO vs. Tek IsoVu Video

Probe Compare Setup Video

Comprehensive Connectivity

  • MMCX for high bandwidth convenience
  • Square headers for 2.5 kV performance
  • Very flexible tips vs Tektronix IsoVu

View DL-ISO Probe Tips – Most Flexible Video

HVFO: High Voltage Fiber Optically-isolated Probes

The new HVFO108, with 150 MHz of bandwidth, is suitable for both Silicon and Silicon Carbide designs. It is designed to measure small signals floating on an HV bus and delivers excellent performance, has high CMRR, and provides optical isolation to reduce DUT loading.

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Optical Isolation for Silicon MOSFETs

  • 150 MHz bandwidth
  • 35 kV common-mode voltage rating
  • Optical isolation for reduced loading of DUT

Superior Noise Rejection

  • 140 dB CMRR
  • Low loop inductance
  • Low attenuation

Simple, Compact, Affordable

  • Fits into tight spaces
  • Fits into tight budgets
  • No compromise on performance

DL-HCM: 60 V Common Mode Differential Probes

The 60 V Common Mode Differential Probes are the ideal probes for lower voltage GaN power conversion measurement with the highest accuracy, best CMRR, and lowest noise.

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dl-hcm-probe-image

Ideal for 48 V GaN

  • 500 MHz and 1 GHz bandwidth
  • 80 V dynamic range
  • 60 V common mode

Highest accuracy, Lowest Noise, Highest Rejection

  • 0.5% gain accuracy
  • Precision Gain Calibration
  • Best LF flatness (0.1 dB)
  • Exceptional CMRR out to high frequencies

Wide variety of tips

  • Wide variety of tips standard
  • ProBus active probe interface
  • Optional high temperature solder-in tip available

Current Probes

Teledyne LeCroy current probes do not require the breaking of a circuit or the insertion of a shunt to make accurate and reliable current measurements. Based on a combination of Hall effect and transformer technology, Teledyne LeCroy current probes are ideal for making accurate AC, DC, and impulse current measurements .

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A current probe for every need

  • 30 to 500 A continuous current
  • Up to 100 MHz bandwidth
  • Powered from the oscilloscope, no external power supply required

Best performance

  • High sensitivity of 1 mA/div for low-current measurements
  • No breaking of circuit or insertion of shunt to make measurement
  • Autozero and degauss capabilities built into oscilloscope

Using a current sensor?

  • CA10 enables 3rd party probe to operate like Teledyne LeCroy probe
  • Programmable EEPROM saves 3rd party current sensor parameters
  • Easy to use, saves time and possible errors

Learn more