LeCroy DL-ISO High Voltage Optically Isolated User manual

Brand: LeCroy

Model: DL-ISO High Voltage Optically Isolated

Type: User manual

LeCroy DL-ISO High Voltage Optically Isolated probes are designed for high-voltage measurements up to 6000V CAT III and 1000V CAT II. They provide galvanic isolation between the measurement circuit and the oscilloscope, ensuring user safety and preventing ground loops. The probes feature high bandwidths of up to 1 GHz, allowing for accurate capture of fast transients and high-frequency signals. They also offer low noise and high common mode rejection ratio (CMRR), ensuring clean and reliable measurements.

User Manual

-ISO High Voltage

Optically Isolated Probes

L03-ISO, DL07-ISO, DL10-ISO

DL-ISO High Voltage Optically Isolated Probes User Manual

Unauthorized duplication of Teledyne LeCroy documentation materials is strictly prohibited.

Customers are authorized to duplicate and distribute Teledyne LeCroy documentation for internal

training purposes.

Teledyne LeCroy is a 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.

dl-iso-user-manual_01nov22.pdf

November, 2022

User Manual

Contents

Safety .................................................................................................................................................. 1

Symbols ........................................................................................................................................... 1

Terms ............................................................................................................................................... 1

General Safety Precautions ......................................................................................................... 1

High Voltage Safety ....................................................................................................................... 2

Clearance Requirements .............................................................................................................. 2

Laser Safety .................................................................................................................................... 4

Safe Operating Environment ....................................................................................................... 5

Introduction ........................................................................................................................................ 6

Key Features ................................................................................................................................... 6

Compatibility ................................................................................................................................... 6

Required Firmware Versions ....................................................................................................... 6

DL-ISO Probe System ....................................................................................................................... 7

Standard Parts ............................................................................................................................... 7

Probe Tips (at least one required) .............................................................................................. 8

Optional Tip Accessories ............................................................................................................. 9

DL-ISO Probe Specifications .......................................................................................................... 10

Electrical Characteristics .......................................................................................................... 10

Noise and Electromagnetic Compatibility (EMC) ................................................................. 11

Dimensions .................................................................................................................................. 12

Tip-Accessory Derating ............................................................................................................. 12

Bandwidth by Model .................................................................................................................. 13

Bandwidth by Tip ........................................................................................................................ 13

Input Impedance vs. Frequency ............................................................................................... 14

Max. Non-destruct Voltage (tip derating) ............................................................................... 15

Max. Operating Voltage (tip derating) ..................................................................................... 15

Common Mode Rejection Ratio (CMRR) ............................................................................... 16

Equivalent Circuit ........................................................................................................................ 17

Operation .......................................................................................................................................... 18

Connecting the Probe to the Test Instrument ....................................................................... 18

Attaching and Removing Tips .................................................................................................. 18

Connecting Tips to the Test Circuit ......................................................................................... 19

Operating with an Oscilloscope ............................................................................................... 20

DL-ISO High Voltage Optically Isolated Probes

Performance Verification ............................................................................................................... 23

Required Test Equipment ......................................................................................................... 23

Before You Begin ........................................................................................................................ 24

Functional Check ........................................................................................................................ 24

RMS Noise Check ....................................................................................................................... 24

Gain Accuracy Check ................................................................................................................. 25

DL-ISO Performance Verification Test Record ........................................................................... 28

Care and Maintenance.................................................................................................................... 29

Checking Probe Cable ................................................................................................................ 29

Cleaning the Probe Body ........................................................................................................... 29

Calibration Interval ..................................................................................................................... 29

Service Strategy .......................................................................................................................... 29

Reference.......................................................................................................................................... 30

Returning a Product for Service ................................................................................................ 30

Technical Support ...................................................................................................................... 30

Warranty ....................................................................................................................................... 31

Certifications ............................................................................................................................... 32

User Manual

Safety

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 accessory is the responsibility of the system owner.

Symbols

These symbols appear on the probe and accessories or in this manual to alert you to important

safety considerations.

DANGER, HIGH VOLTAGE. Risk 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.

ESD CAUTION. Risk of Electrostatic Discharge (ESD) that can damage the probe or instrument

if anti-static measures are not taken.

Laser Safety WARNING.

Terms

The terms isolated and electrically floating are used in documentation to indicate measurements

where there is no direct conduction path to earth ground.

General Safety Precautions

The overall safety of any system incorporating this probe is the responsibility of the system owner.

For use only by trained personnel. Not for use in households or by children.

Use only as specified. Using the probe and/or the equipment it is connected to in a manner other

than specified may impair the protection mechanisms.

Before use, test the probe with a known source to ensure it is operating correctly.

Do not overload; observe all terminal ratings. Do not connect the probe to any circuit that exceeds

the CAT, voltage or current ratings of the oscilloscope terminal, probe or probe-accessory

combination.

Use only accessories compatible with the probe. Use only accessories that are rated for the

application. Using accessories other than those shipped with the probe may create an electrical

hazard.

Connect and disconnect properly. Connect the probe to the oscilloscope before connecting to the

DL-ISO High Voltage Optically Isolated Probes

circuit being measured. De-energize the circuit under test before connecting probe tips.

Keep the probe head and fiber-optic cable away from the circuits being measured. Only tips are

intended for contact with electrical sources.

Do not excessively bend cables. Avoid tight radius bends, crushing, crimping, twisting or otherwise

stressing cables.

Do not remove the probe’s casing. Touching exposed connections may result in electric shock.

Do not disassemble the probe or remove inside parts. Refer all service to Teledyne LeCroy

personnel.

Use only indoors within the operational environment listed. Do not use in wet or explosive

atmospheres.

Keep product surfaces clean and dry.

Do not use damaged cables. Before each use, check cables for damage to the protective

insulation.

Do not operate with suspected failures. Before each use, inspect the probe and accessories. If any

part is damaged, cease operation immediately and secure the probe from inadvertent use.

High Voltage Safety

Not rated for hand-held use. Do not handle probe tip connectors, cables or any part of the probe

head at any time if there is any possibility >60 Vdc/30 Vrms is present in the circuit. The plastic

case of the probe head and tip shields do not provide safe isolation.

Do not connect tips to an energized circuit. Always de-energize the circuit under test before

installing or removing tips.

Beware when using with high-voltage or high-frequency signals. Read the manual thoroughly

before use to understand how the probe and accessories are derated depending on use. Refer to

the tip derating and RF burn limit graphs.

Clearance Requirements

The unique common mode voltage range of the probe system allows it to be used in the presence

of high-frequency/high-voltage common mode signals, but it is important to observe all

precautions while using it.

WARNING: RF burns or electric shock can occur when using the DL-ISO probes. The plastic case of

the probe head and tip shields do not provide safe isolation from hazardous common mode

voltages. Do not access the probe while measuring signals in the RF burn risk area.

User Manual

Maximum safe handling limits for common mode voltages

between the probe head and tips with respect to earth ground.

WARNING: Maintain 1 m (~40 in) safe clearance of the probe head and tip in all directions when

connected to an energized circuit. Place the oscilloscope and any equipment you need to access at

least 1 m from the circuit and probe head.

DL-ISO High Voltage Optically Isolated Probes

Laser Safety

WARNING: The DL-ISO probes contain multiple lasers, exposing which may cause laser burns. Do

not remove any plastic or metal covers or otherwise attempt to disassemble the probe.

Using controls, adjustments or procedures other than those specified in this manual may result in

exposure to hazardous levels of invisible radiation.

The probe uses optical fibers within a single cable between the probe head and control module.

Therefore, standard optical fiber handling practices are required. Avoid tight radius bends, crushing,

crimping, twisting or otherwise stressing the fiber-optic cable.

Minimum cable radius bend is 2 in (5.1 cm); avoid making loops smaller than 4 in (10.2 cm).

Before each use, inspect the fiber-optic cable for damage such as tears or other defects. If the

inner corrugated plastic sleeve is visible or punctured, cease operation immediately and secure the

probe from inadvertent use.

CLASS 1 LASER PRODUCT

Outer sleeve

(soft woven material)

Inner sleeve

(hard corrugated plastic)

User Manual

Safe Operating Environment

Temperature, Operating, 5 °C to 40 °C

Probe Head

Temperature, Operating, 10 °C to 35 °C

Control Module

Temperature, Non-operating -20 °C to 70 °C

Relative Humidity 5% to 95% RH (non-condensing)

75% RH above 30 °C

45% RH above 50 °C

Altitude, Operating 3000 m (9842 ft.) maximum

Altitude, Non-Operating 10,000 m (32,807 ft.) maximum

Usage Indoor Use Only

Pollution Degree* 2, an operating environment where normally only dry, non-

conductive pollution occurs. Conductivity caused by

temporary condensation should be expected.

* Per IEC/EN 61010-1:2010.

The soft storage case and packaging materials shipped with the probe may not be

suitable for certain ESD sensitive areas, such as EPAs (ESD Protected Areas). If this is a

concern for your application, please take the necessary steps required for your test

environment.

DL-ISO High Voltage Optically Isolated Probes

Introduction

The DL-ISO probes enable the highest confidence in GaN and SiC device characterization with

highest accuracy, best signal fidelity and comprehensive connectivity for testing servers,

motherboards, mobiles, lighting and building automation, residential inverters, UPS, switch mode

power supplies and motors. With up to 1 GHz bandwidth, 2500 V differential input range and 60 kV

common mode range, they provide an industry-leading 1.5% system accuracy when used with

12-bit High Definition Oscilloscopes (HDOs).

Key Features

• 1 GHz bandwidth

• Ideal for GaN and SiC devices

• 1.5% system accuracy (probe plus oscilloscope)

• 435 ps rise time

• High CMRR—160 dB

• Flexible connectivity options

• Auto Zero without disconnection

Compatibility

DL-ISO probes are compatible with a wide range of Teledyne LeCroy oscilloscopes equipped with

the ProBus interface. To confirm compatibility with your oscilloscope model, visit:

https://teledynelecroy.com/probes/probemodel.aspx?modelid=11667&categoryid=3&mseries=537

Required Firmware Versions

Correct operation of the DL-ISO probes with MMCX tips, HV square-pin tips, or tip accessories

requires that the oscilloscope be installed with MAUI® firmware version 10.1.x.x. or higher.

User Manual

DL-ISO Probe System

Standard Parts

DL-ISO Probe

The probe head contains a frequency modulating optical transmitter and receiver integrated with a

high-performance electrical amplifier. It is connected to the control module by an integrated fiber-

optic cable. The control module utilizes the ProBus interface to communicate tip attenuation value

and proper voltage scaling to the oscilloscope. When connected to a ProBus interface, the DL-ISO

probe becomes an integral part of the measuring instrument, able to be controlled through the

oscilloscope application or front panel.

DL-ISO probe head with tip (left) and control module with connector box (right)

External AC to DC Adapter

The probe is powered by an external AC to DC adapter that is connected to the control module.

Connect to standard AC power outlets.

CAUTION: Use only the adapter shipped with the probe. To prevent damage, the probe must

be powered from a supply that provides appropriately isolated and floating output voltage

(i.e., no Earth connection). Extra adapters can be ordered from CUI, Inc., Part Number:

SMI36-24.

Tripod Probe Mount

Non-conductive tripod secures probe and tip above the circuit in a stationary test setup.

Soft Storage Case

Soft case with a custom foam insert for storing probe and tips.

Probe Head

Probe Tip

Control Module

Connector box

DL-ISO High Voltage Optically Isolated Probes

Probe Tips (at least one required)

Probe tips are sold separately from the probe itself, but at least one tip is required for proper

functioning. Tips can be stored in a compartment in the soft carrying case.

All probe tips are high-quality coaxial attenuating tips that reject unwanted noise.

Probe tip measurement capability ranges from 2 Vpp to 2500 Vpp. The interface is MMCX or

square pins depending on how large the voltage to be measured is.

MMCX Tip

MMCX tips connect directly to an MMCX connector on customer’s circuit board. HV square-pin tips

connect to differential +ve and -ve signals on circuits. On the tip, you will see a red + and a white -

indicating which side connects to signal and which to reference.

HV Square Pin Tip

Description Part Number Quantity

2 Vpp MMCX Tip

DL-ISO-2V-TIP

10 Vpp MMCX Tip

DL-ISO-10V-TIP

40 Vpp MMCX Tip DL-ISO-40V-TIP 1

200 Vpp MMCX Tip

DL-ISO-200V-TIP

1 kVpp HV Square Pin Tip

DL-ISO-1000V-TIP

2.5 kVpp HV Square Pin Tip

DL-ISO-2500V-TIP

Each tip communicates identifying information to the probe. The tip rating determines the peak-to-

peak voltage level that can be measured.

Note: Tip selection is important to optimize for best noise performance. Using a tip with a wider

dynamic voltage range than necessary will result in more noise.

All tips are interchangeable with any DL-ISO probe and do not require specialized calibration with a

specific DL-ISO probe. Simply insert the correctly rated tip into the connector on the probe head.

User Manual

Optional Tip Accessories

All tip accessories shown below are sold as a kit, part number DL-ISO-ACC-KIT.

DL-ISO probe tip accessories

Item

Description

QTY

MMCX to Square-pin Adapter

This adapter can be used to connect 2 V to 200 V MMCX tips to

square-pin headers. Mating pins must measure 25 mil/0.025” or

0.06 mm x 0.06 mm with a pitch of 0.1” between pins.

2" MMCX to Y-lead Socket

Intended for 2 V to 200 V MMCX tips, the Y-lead sockets can be

used to probe differential signals that are far apart on the board.

3" MMCX to Y- lead Solder-in Intended for 2 V to 200 V MMCX tips, the Y-lead solder-ins can be

soldered directly to the test points for a secure probe connection.

2" Socket

Intended for 1000/2500 V tips, the sockets help extend the

connection to the DUT.

3" Solder-in

Intended for 1000/2500 V tips, the solder-ins help extend the

connection to the DUT.

Grabbers

Can be used to connect directly to IC legs or pins on a PCB. The 2”

sockets will plug into the Grabbers.

DL-ISO High Voltage Optically Isolated Probes

DL-ISO Probe Specifications

For complete specifications, see the product datasheet. Specifications are subject to change

without notice.

Electrical Characteristics

DL03-ISO

DL07-ISO

DL10-ISO

Bandwidth

350 MHz

700 MHz

1 GHz

Risetime

(10-90%) 1.1 ns 575 ps 435 ps

Input Dynamic Voltage Range

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

2 Vpp

10 Vpp

40 Vpp

200 Vpp

1000 Vpp

2500 Vpp

Common Mode Voltage Range

+/- 60 kV (DC + peak AC)

Max

imum Input Voltage to Earth +/- 60 kV (DC + peak AC)

Maximum Operating Voltage (DC+Peak AC)

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

26 V

55 V

170 V

250 V

1000 V

2500 V

Maximum Non-destruct Voltage (DC+Peak AC)

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

50 V

100 V

250 V

300 V

1250 V

3300 V

Sensitivity

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

20 mV/div to 250 mV/div

100 mV/div to 1.3 V/div

400 mV/div to 5 V/div

2 V/div to 25 V/div

10 V/div to 125 V/div

25 V/div to 320 V/div

DC Gain Accuracy (probe + oscilloscope)

1.5% after Precision Gain Calibration

DC Gain Drift

<1% /

Offset

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

±25 V

±50 V

±150 V

±1000 V

±2500 V

User Manual

Input Impedance

DL-ISO-2V-TIP

DL-ISO-10V-TIP

DL-ISO-40V-TIP

DL-ISO-200V-TIP

DL-ISO-1000V-TIP

DL-ISO-2500V-TIP

200 kΩ || 3.6 pF

1 MΩ || 2.1 pF

7.5 MΩ || 2.0 pF

8 MΩ || 1.5 pF

15 MΩ || 2.1 pF

Output Termination

50 Ω

Input/Output Coupling

DC only

Interface

ProBus

Noise and Electromagnetic Compatibility (EMC)

DL03-ISO

DL07-ISO

DL10-ISO

Noise (typical)

DL-ISO-2V-TIP (100 mV/div)

DL-ISO-10V-TIP (500 mV/div)

DL-ISO-40V-TIP (2 V/div)

DL-ISO-200V-TIP (10 V/div)

DL-ISO-1000V-TIP (50 V/div)

DL-ISO-2500V-TIP (125 V/div)

2.3 mVrms

11.5 mVrms

46.0 mVrms

230.0 mVrms

1.2 Vrms

2.9 Vrms

3.0 mVrms

15.0 mVrms

60.0 mVrms

300.0 mVrms

1.5 Vrms

3.8 Vrms

3.4 mVrms

17.0 mVrms

68.0 mVrms

340.0 mVrms

1.7 Vrms

4.3 Vrms

Electrostatic Discharge (ESD) Immunity

8 kV contact discharge, 10 kV air discharge

per IEC61000-4-2, criteria A

Radiated RF

Electromagnetic Field Immunity Probe Tip and Probe Head

Up to 25 V/m (80 MHz to 2.7 GHz)

per IEC61000-4-3, criteria A

when operating in standard configuration*

Control Module

Up to 3 V/m (80 MHz to 2.7 GHz)

per IEC61000-4-3, criteria A

when operating in standard configuration*

Immunity to Conducted Disturbance

Induced by RF Fields

Probe Tip and Probe Head

Up to 10 V (150 kHz to 80 MHz)

per IEC61000-4-6, criteria A

when operating in standard configuration*

Control Module

Up to 3 V (150 kHz to 80 MHz)

per IEC61000-4-6, criteria A

when operating in standard configuration*

* Standard configuration is a test setup with probe head positioned close to DUT and at least 1 m from control module,

oscilloscope near control module, and all laboratory conditions within environmental range listed on page 5.

DL-ISO High Voltage Optically Isolated Probes

Dimensions

Probe Head

Width 58 mm

Length

220.7 mm (not including strain relief)

Height 32 mm

Fiber-optic Cable Length

(tip to oscilloscope input)

3.375 m (11 ft.)

Control Module

Width 106.1 mm

Length

229.8 mm (not including strain relief)

Height

57.8 mm

Tip-Accessory Derating

Tips are derated according to the following table when used with the accessory listed.

WARNING: Tips and accessories are classified No Rated Measurement Category per

IEC/EN 61010-2-030:2021 definitions. No Rated Measurement Category applies to circuits

not directly connected to the mains supply. The measurement terminals of the probe as

well as all accessories are to be used only for measurements on circuits not directly

connected to the mains. The probe and accessories are not rated for CAT II, III or IV

measurements.

WARNING: The Measurement Category and voltage rating is the lower of the probe tip or

accessory used. Do not exceed the CAT, voltage or current rating of the lowest rated

individual component.

WARNING: The probe is not intended for hand-held use. Always maintain adequate spacing

between floating probe components and earth ground when measuring high voltages in a

stationary test setup.

Part

Input Dynamic Range

Max. Operating

Voltage* (DC+Peak AC)

Max. Non-destruct

Voltage* (DC+Peak AC)

DL-ISO-ACC-KIT

MMCX to Square-pin Adapter

Tip dependent

250 V 300 V

2" MMCX to Y-lead Socket

Tip dependent

3" MMCX to Y- lead Solder-in

Tip dependent

2" Socket

Tip dependent

2,500 V 3,300 V

3" Solder-in

Tip dependent

Grabbers

Tip dependent

* Accessories derate the same as the tip used. Refer to the Non-destruct Input Voltage (tip derating) graph.

User Manual

Bandwidth by Model

Typical frequency response of the DL-ISO probes when used with the DL-ISO-2V-TIP:

Bandwidth by Tip

Typical frequency response of the DL10-ISO probe when used with the following tips:

DL-ISO High Voltage Optically Isolated Probes

Input Impedance vs. Frequency

User Manual

Max. Non-destruct Voltage (tip derating)

Max. Operating Voltage (tip derating)

DL-ISO High Voltage Optically Isolated Probes

Common Mode Rejection Ratio (CMRR)

CMRR varies by tip and measurement frequency. The table below shows typical values.

Probe Tip

1 MHz

100 MHz

200 MHz

500 MHz

1 GHz

DL-ISO-2V-TIP

160 dB

110 dB

90 dB

80 dB

75 dB

DL-ISO-10V-TIP

160 dB

100 dB

75 dB

65 dB

DL-ISO-40V-TIP

150 dB

100 dB

70 dB

60 dB

50 dB

DL-ISO-200V-TIP

140 dB

95 dB

55 dB

50 dB

45 dB

35 dB

DL-ISO-1000V-TIP

125 dB

85 dB

30 dB

35 dB

25 dB

20 dB

DL-ISO-2500V-TIP

115 dB

80 dB

25 dB

30 dB

25 dB

15 dB

CMRR in decibels (dB) is shown in the plot below. All discontinuities are due to a combination of

noise floor limitations of the measurement device and amplification capabilities of the generators.

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LeCroy DL-ISO High Voltage Optically Isolated User manual