Teledyne Lecroy Everywhereyoulook DL05-HCM User manual

Operator’s Manual
60
V Common Mode Probes
DL05
-HCM
DL10
-HCM

DL05-HCM and DL10-HCM
60 V Common Mode Probes
Operator's Manual
October, 2020

60 V Common Mode Probes Operator's Manual
© 2020 Teledyne LeCroy, Inc. All rights reserved.
Unauthorized duplication of Teledyne LeCroy documentation materials other than for internal
sales and distribution purposes is strictly prohibited. However, clients are encouraged to
duplicate and distribute Teledyne LeCroy documentation for their own internal educational
purposes.
Information contained herein is classified as EAR99 under the U.S. Export Administration
Regulations. Export, reexport or diversion contrary to U.S. law is prohibited.
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.
932854-00 Rev A
60-v-common-mode-probes-om-eng_02oct20.pdf
October, 2020

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Contents
Introduction................................................................................................................................................... 1
Compatibility............................................................................................................................................. 1
Required Firmware.................................................................................................................................. 1
Probe Components ................................................................................................................................. 2
Specifications........................................................................................................................................... 5
Safety ...........................................................................................................................................................15
Precautions.............................................................................................................................................15
Safe Operating Environment ...............................................................................................................16
Probe Handling.......................................................................................................................................16
Operation .....................................................................................................................................................17
Amplifier ..................................................................................................................................................17
Freehand Probe Holder.........................................................................................................................18
Connecting Tips.....................................................................................................................................19
Using the PCF-200 Deskew Fixture ...................................................................................................24
Operating from the Oscilloscope........................................................................................................25
Maintenance ...............................................................................................................................................28
Cleaning...................................................................................................................................................28
Calibration Interval ................................................................................................................................28
Service Strategy.....................................................................................................................................28
Replacement Parts................................................................................................................................28
Returning a Product for Service..........................................................................................................29
Performance Verification Procedure......................................................................................................30
Required Equipment..............................................................................................................................30
Preliminary Set Up.................................................................................................................................32
Functional Check ...................................................................................................................................32

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Verification Procedure.......................................................................................................................... 32
DL_____-HCM Test Record................................................................................................................... 37
Reference.................................................................................................................................................... 38
Certifications.......................................................................................................................................... 38
Technical Support ................................................................................................................................. 40
Warranty
THE WARRANTY BELOW REPLACES ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS, OR ADEQUACY
FOR ANY PARTICULAR PURPOSE OR USE. TELEDYNE LECROY SHALL NOT BE LIABLE FOR ANY
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT OR OTHERWISE.
THE CUSTOMER IS RESPONSIBLE FOR THE TRANSPORTATION AND INSURANCE CHARGES FOR THE
RETURN OF PRODUCTS TO THE SERVICE FACILITY. TELEDYNE LECROY WILL RETURN ALL
PRODUCTS UNDER WARRANTY WITH TRANSPORT PREPAID.
The product is warranted for normal use and operation, within specifications, for a period of
one year from shipment. Teledyne LeCroy will either repair or, at our option, replace any
product returned to one of our authorized service centers within this period. However, in
order to do this we must first examine the product and find that it is defective due to
workmanship or materials and not due to misuse, neglect, accident, or abnormal conditions
or operation.
Teledyne LeCroy shall not be responsible for any defect, damage, or failure caused by any
of the following: a) attempted repairs or installations by personnel other than Teledyne
LeCroy representatives, b) improper connection to incompatible equipment, or c) use of
non-Teledyne LeCroy supplies. Furthermore, Teledyne LeCroy shall not be obligated to
service a product that has been modified or integrated where the modification or
integration increases the task duration or difficulty of servicing the product. Spare and
replacement parts and repairs all have a 90-day warranty.
Products not made by Teledyne LeCroy are covered solely by the warranty of the original
equipment manufacturer.

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Introduction
The 60 V Common Mode Differential Probes (DLxx-HCM) offer 60 V of common mode and
80 V differential input range with 1 GHz of bandwidth, making them the ideal probe for
lower voltage GaN power conversion measurements.
The Common Mode Rejection Ratio (CMRR) for the probes is exceptional to very high
frequencies. This provides for the best measurement performance when measuring very
fast slew rate (high dV/dt) PWM signals typical of GaN devices and systems. Exceptional
CMRR, combined with low probe noise and high offset capability, makes the probes
capable of measuring very small control signals floating on high common mode voltages.
The DLxx-HCM probes are calibrated for high-precision measurements to within 0.5% at DC
and 0.1 dB flatness from DC to 100 MHz. This ensures high accuracy top and base voltage
level measurement of pulse-width modulated signals. The Precision Gain Calibration
capability furthers measurement precision by improving the gain accuracy and removing
small offset drifts from the measurement configuration.
Equipped with a wide variety of standard tips, the 60 V Common Mode Differential Probes
provide the perfect combination of high performance and flexibility for connecting to any
device under test. An optional accessory kit and high temperature solder-in tip are available
for further connectivity options.
Compatibility
DL05-HCM and DL10-HCM are compatible with Teledyne LeCroy oscilloscopes equipped
with the ProBus interface running Windows® 10 Pro or Windows CE operating systems.
See our website for all compatible oscilloscope models.
Required Firmware
Proper functioning of the probes requires a minimum version of MAUI™ firmware 9.3.x.x to
be installed on the oscilloscope.

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Probe Components
The 60 V Common Mode Differential Probes consist of an amplifier and a selection of
standard leads and tips. Optional accessories are available for purchase separately.

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Standard Accessories
The probes are delivered with the following standard accessories.
Item
Description
QTY
Browser Tip
The browser tip attaches to the amplifier for hand-held browsing. It
combines high performance with quick access to a variety of probing
points.
1
2” Solder-in Tip
This lead can be soldered directly to the test points for a secure probe
connection. Two-inch long leads give more flexibility in connecting to
hard-to-reach test points.
1
High Performance
Solder-in Tip
Because of their small size, these tips provide the maximum signal
fidelity at the highest frequency response. They are soldered to the test
points like the 2” solder-in tips.
2
2” Y-lead Socket
Y-lead sockets are used to probe differential signals that are far apart on
the board. They can be connected directly over pins, used with single
pins inserted, or with grabbers attached to connect to very tightly
spaced points.
1
5” Y-lead Socket
Same as above with five-inch long leads. This Y-lead could be used to
extend into spaces where it is difficult to place the amplifier.
1
Mini-Grabbers
Mini-grabbers can be used to connect to very tightly spaced pins. They
are always attached to a Y-lead socket.
3
Straight Pin Header
The straight-pin header is used to connect to female receptacles. It is a
fixed spacing of 2.54 mm (0.1 inch).
2
Single Pin
The single pin fits into either socket of the Y-leads or the ground lead to
make contact where there is not a pin on the board.
6
Ground Lead
The bendable, socket-tipped ground lead can be used alone, or with the
single pin or grabbers inserted for probing ground planes.
1
Storage Case
Soft storage case.
1
Accessory Tray
Plastic insert for storage case.
1
Certificate of Calibration
1
Operator's Manual
1

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Optional Accessories
The following optional accessories may be purchased separately.
Item
Description
Part Number
QTY
High Temperature Lead
The “Hi-Temp” lead can be used in controlled
situations where the differential amplifier
needs to be removed from an extreme
temperature environment. Ideally suited for
testing where the temperature can fluctuate
from -40 °C to +125 °C, the 1-meter long lead
provides an easy and robust connection to the
circuit under test. It is designed to be soldered
to the test board like the solder-in tips.
DL-HCM-Hi-Temp
1
Deskew Fixture
The PCF-200 deskew fixture may be used to
determine the effect of probe input loading on
the DUT, for verification of the probe’s
response to the signal being measured, or as a
convenient way to deskew probes or
oscilloscope channels.
PCF-200
1
DL-HCM Accessory Kit
Includes the following items.
DL-HCM-Acc-Kit
Freehand Probe Holder
The Freehand probe holder is designed to keep
weight on the probe tip while securing the
position of the amplifier. It helps prevent loss
of contact when the circuit under test is
destabilized. The amplifier can be mounted
horizontally or vertically in the Freehand.
1
Y-banana Adaptor
The Y-banana adaptor is used to connect
banana tips delivered with other probe models
to the DLxx-HCM probe.
1
Micro-Grabbers
Micro-grabbers are ideal for connecting to
small IC legs or very tightly spaced pins. It is
always used with a Y-lead.
2

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Specifications
Full specifications are on the product datasheet. Visit teledynelecroy.com/probes.
Note: Specifications are subject to change without notice.
DL05-HCM
DL10-HCM
Guaranteed Specifications
Bandwidth (without leads)
500 MHz
1 GHz
DC Gain Accuracy
700 ps
350 ps
Electrical Characteristics
Differential Mode Range 1
80 V (DC + Peak AC), 200 mV/div to 20 V/div
Common Mode Range 2
± 60 V (DC + Peak AC)
Max. Input Voltage to Earth
(either input to ground) 80 V (DC + peak AC), max 60 V DC
Max. Safe Input Voltage 3
28.28 Vrms or 60 V DC (referenced to ground)
Vertical Sensitivity (Gain)
200 mV/div to 20 V/div
Measurement Category (CAT) 4
No rated measurement category
Pollution Degree 5
2
This is the maximum voltage that can be applied between the + and - inputs without overloading the amplifier,
which otherwise would result in clipping or distorting of the waveform measured by the oscilloscope.
This is the maximum voltage with respect to earth ground that can be applied to either input. Exceeding the
common mode range can result in unpredictable measurements. Because common mode signal is normally
rejected and not displayed, be careful to avoid accidentally exceeding the common mode range.
This is the maximum safe input voltage with respect to ground for hand-held use.
Per IEC/EN 61010-031:2015, the probe is not intended for measurements on circuits directly connected to the
Mains supply.
Per IEC/EN 61010-031:2015, the probe is to be used only in an operating environment where normally only dry,
non-conductive pollution occurs. Temporary conductivity caused by condensation should be expected.
WARNING: The probe is not intended for hand-held use above 60 VDC. Do not handle probe tips, leads
or any part of the amplifier if DC bus voltages are greater than 60 V. Use stationary setup for
measurements above 60 V. If there is any question as to whether > 60 V voltages are present in the
circuit, exercise caution and do not touch these components.

60 V Common Mode Differential Probes
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Typical Bandwidth
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
110 100 1000
Gain (dB)
Frequency (MHz)
DL05-HCM DL10-HCM High Performance Solder-In
-4
-3
-2
-1
0
1
2
110 100 1000
Gain (dB)
Frequency (MHz)
2" Solder-In 2" Y-Lead 5" Y-Lead

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Typical Bandwidth (cont’d)
Step Response, 1 V Input
-5
-4
-3
-2
-1
0
1
2
3
4
5
0.1 110 100 1000
Gain (dB)
Frequency (MHz)
Browser
0
0.2
0.4
0.6
0.8
1
1.2
-1.00E-09 0.00E+00 1.00E-09 2.00E-09 3.00E-09 4.00E-09 5.00E-09
Volatge (V)
Time (s)
DL05-HCM DL10-HCM High Performance Solder-In

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Step Response, 1 V Input (cont’d)
Note: Unless full bandwidth is required, we recommend applying a bandwidth filter when
using the Browser to reduce peaking. The plot above shows the results.
0
0.2
0.4
0.6
0.8
1
1.2
-1.00E-09 0.00E+00 1.00E-09 2.00E-09 3.00E-09 4.00E-09 5.00E-09
Volatge (V)
Time (s)
2" Solder-In 2" Y-Lead 5" Y-Lead
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
-1.00E-09 0.00E+00 1.00E-09 2.00E-09 3.00E-09 4.00E-09 5.00E-09
Volatge (V)
Time (s)
Browser Browser with 500 MHz Filter

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Typical CMRR Performance
Differential probes sense the voltage difference that appears between the +and – inputs,
referred to as the normal or differential mode voltage. The voltage component that is
referenced to earth and is identical on both inputs is rejected by the amplifier. This is
referred to as the common mode voltage and can be expressed: Vcm = (V+input + V-input)/2
The ideal differential probe/amplifier would sense and amplify only the differential mode
voltage component and reject the entire common mode voltage component. Real
differential amplifiers are not perfect, and a small portion of the common mode voltage
component appears at the output.
Common mode rejection ratio (CMRR) is the measure of how much the amplifier rejects
the common mode voltage component. CMRR is equal to the differential mode gain (or
normal gain) divided by the common mode gain. Common mode gain is equal to the output
voltage divided by the input voltage when both inputs are driven by only the common mode
-100
-90
-80
-70
-60
-50
-40
-30
-20
0.00001 0.0001 0.001 0.01 0.1 110 100 1000
CMRR (dB)
Frequency (MHz)
200 mV/div - 2.5 V/div 2.5 V/div - 20 V/div

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signal. CMRR can be expressed as a ratio (e.g., 10,000:1) or implicitly in dB (e.g., 80 dB).
Higher numbers indicate greater rejection (better performance).
The first order term determining the CMRR is the relative gain matching between the + and
– input paths. You can obtain high CMRR values by precisely matching the input
attenuators in a differential amplifier. The matching includes the DC attenuation and the
capacitance which determines the AC attenuation. As the frequency of the common mode
component increases, the effects of stray parasitic capacitance and inductance in
determining the AC component become more pronounced. The CMRR becomes smaller as
the frequency increases. Therefore, the CMRR is usually specified in a graph of CMRR
versus common mode frequency.
The common mode frequency in the previous graph is assumed to be sinusoidal. In real life
applications, the common mode signal is seldom a pure sine wave. Signals with pulse wave
shapes contain frequency components much higher than the repetition rate may suggest.
This makes it very difficult to predict actual performance in the application for CMRR-
versus- frequency graphs.
Differential Input Impedance
100
1000
10000
100000
1000000
1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 1.E+09
Differential Input Impedance (Ω)
Frequency (Hz)

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Voltage vs. Frequency Derating
0
5
10
15
20
25
30
1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 1.E+09
Volatge (Vrms)
Frequency (Hz)

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Equivalent Circuits (Probe Loading)
PROBE ONLY
BROWSER TIP
2” SOLDER-IN TIP

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HIGH-PERFORMANCE SOLDER-IN TIP
2” Y-LEAD
5” Y-LEAD

60 V Common Mode Differential Probes
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HI-TEMP LEAD
STRAIGHT PIN HEADER