Teledyne Lecroy WaveLink Series User manual

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Operator’s Manual
WaveLink Series
Differential Probe
(13-25 GHz)

WaveLink Series Differential Probe (13-25 GHz)
Operator's Manual
November, 2014

700 Chestnut Ridge Road
Chestnut Ridge, NY, 10977-6499
Tel: [phone], Fax: [phone]
teledynelecroy.com
WaveLink Series Differential Probe (13-25 GHz) Operator's Manual
© 2014 Teledyne LeCroy. 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 distribute and duplicate Teledyne LeCroy
documentation for their own internal educational purposes.
Teledyne LeCroy and 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.
WARRANTY
Teledyne LeCroy warrants this oscilloscope accessory for normal use and operation within specification for a period of one year from the
date of shipment. Spare parts, replacement parts and repairs are warranted for 90 days.
In exercising its warranty, Teledyne LeCroy, at its option, will either repair or replace any assembly returned within its warranty period to
the Customer Service Department or an authorized service center. However, this will be done only if the product is determined by
Teledyne LeCroy's examination to be defective due to workmanship or materials, and the defect is not caused by misuse, neglect,
accident, abnormal conditions of operation, or damage resulting from attempted repair or modifications by a non-authorized service
facility.
The customer will be 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 transportation charges prepaid.
This warranty replaces all other warranties, expressed or implied, including but not limited to any implied warranty of merchantability,
fitness or adequacy for any particular purposes or use. Teledyne LeCroy shall not be liable for any special, incidental, or consequential
damages, whether in contract or otherwise.
WL-HBW-A-OM-E Rev C
921475-00 Rev B

Operator's Manual
TABLE OF CON TEN TS
Introduction ....................................................................................................................1
Modular Advantage .........................................................................................................2
Modular Probe Components ............................................................................................4
Platform/Cable Assembly................................................................................................... 4
Differential Amplifier Small Tip Modules ........................................................................... 7
Solder-in Interconnect Leads ........................................................................................... 10
Positioner Tip (Browser)................................................................................................... 11
Complete Probe System (PS)............................................................................................ 12
Probe Operation ............................................................................................................14
Overview .......................................................................................................................... 14
System Calibration ........................................................................................................... 14
De-Embedding Probes...................................................................................................... 15
Handling the Probe .......................................................................................................... 16
Connecting the Platform/Cable Assembly, Amplifier Module, and Interconnect Lead... 16
Connecting the Probe to a Teledyne LeCroy Oscilloscope............................................... 18
Operation with a Teledyne LeCroy Oscilloscope.............................................................. 19
Connecting the Probe to the Test Circuit......................................................................... 22
Positioning of the Input Leads.......................................................................................... 27
AutoColor ID and Power Control Indicators..................................................................... 28
AutoZero........................................................................................................................... 29
Accessory Use................................................................................................................29
Positioning Tools .............................................................................................................. 29
Probe Deskew Fixtures..................................................................................................... 38
Care and Maintenance ...................................................................................................39
Cleaning............................................................................................................................ 39
Replacing Damping Resistors on the Solder-in Interconnect Lead .................................. 39
Correctly Replacing Carbon Composite Resistive Pogo-Pin Tips in Dxx05-PT................. 42
Service Strategy................................................................................................................ 46
i

WaveLink Series Differential Probe (13-25 GHz)
Returning a Product for Calibration or Service.................................................................46
Returning a Product to a Different Country .....................................................................48
Consumables and Replacement Parts ..............................................................................48
Service Options .................................................................................................................53
Functional Test ..............................................................................................................54
Functional Test Overview .................................................................................................54
Test Setup .........................................................................................................................54
Performance Verification ...............................................................................................58
Performance Verification Overview .................................................................................58
Required Test Equipment .................................................................................................59
Preliminary Procedure ......................................................................................................61
Verification Procedure......................................................................................................62
DC Frequency Attenuation Accuracy................................................................................64
Connecting SI Interconnect Leads to the Fixture..............................................................66
Quick Functional Check.....................................................................................................68
Performance Verification Test Record..............................................................................70
Reference Material ........................................................................................................72
Specifications....................................................................................................................72
Regional Service Centers ..................................................................................................72
Safety Instructions ............................................................................................................73
Certifications.....................................................................................................................74
Probe Input Impedance and Loading................................................................................77
Differential Mode and Common Mode ............................................................................81
Differential Mode Range and Common Mode Range ......................................................81
Common Mode Rejection Ratio .......................................................................................83
Offset ................................................................................................................................84
Dynamic Range .................................................................................................................84
Index .................................................................................................................................85
ii

Operator's Manual
I nt rodu ct ion
Teledyne LeCroy's WaveLink 13-25 GHz Differential Probes utilize the latest design techniques and
components to achieve very high bandwidth, exceptional system (probe with oscilloscope) rise
times, low electrical noise, and high impedance over a wide frequency range. This is possible
through the use of a high bandwidth traveling wave (distributed) amplifier with high gain and low
noise, interconnect lead and tip designs that provide high impedance over a broad range of
frequencies, which reduces loading on the device under test, and lead/tip construction that enables
a nearly ideal terminating resistor to be located as close to the circuit as possible for superior
performance.
The WaveLink Series of High Bandwidth Differential Probes also utilize digital filtering to optimize
the system frequency response. The design of the WaveLink probe amplifier is such that there is a
very wide bandwidth response that exceeds the oscilloscope bandwidth. At time of initial shipment,
each probe undergoes a rigorous calibration and performance verification process that results in a
stored response file on-board the probe. When the probe is connected to a Teledyne LeCroy
oscilloscope, the probe and oscilloscope responses are optimized to each other to provide a probe +
oscilloscope response identical to that of the raw oscilloscope channel. Teledyne LeCroy has
provided this capability since the introduction of the first WaveLink probes in 2003. All that is left for
the operator is to de-embed the probe loading from the circuit using Teledyne LeCroy's Virtual
Probe software option, if desired. Since the Teledyne LeCroy probe impedance is very high across
the passband, this may not even be necessary.
Teledyne LeCroy’s WaveLink 13-25 GHz Differential Amplifier Small Tip Modules utilize either a
Dxx05 or Dxx05-A amplifier. The two amplifier series differ only in the Input Dynamic Range
specification – Dxx05 permit a 1.6Vp-p absolute signal swing and Dxx05-A permit a 2.0Vp-p signal
swing with specifications guaranteed and 2.4Vp-p max operating window. Otherwise, the operation
of the unit is identical, and this Operator’s Manual is used for either series. The same tips and leads
are compatible with both amplifier series.
To learn more about this probe series, Contact Teledyne LeCroy for Support.
NOTE:
•A Certificate of Calibration is supplied with each probe indicating the system meets
the specifications with those components listed in the Certificate.
•Download the latest version of X-Stream software to run your WaveLink probe with
maximum performance.
1

WaveLink Series Differential Probe (13-25 GHz)
M odu la r Adva nt a ge
These probes use a pioneering modular design first introduced by Teledyne LeCroy's initial WaveLink
product releases. The modular design consists of a Platform/Cable Assembly, Differential Amplifier
Small Tip Module with Solder-in Leads, or Positioner Tip (Browser).
You may order nearly any combination of Platform/Cable Assembly and Amplifier Module (supplied
with Interconnect Leads) depending on the oscilloscope you have and your requirements. At time of
shipment, Teledyne LeCroy serializes the individual components and calibrates them as a system. To
achieve maximum performance and warranted specifications, the components should be used
together, as serialized. If additional Interconnect Leads or other components are purchased, you
may return the serialized system to Teledyne LeCroy for re-calibration to ensure performance.
WaveLink Dxx05 Probe Family
2

Operator's Manual
Standard Accessories WL-PLINK-A-CASE
WL-2.92MM-CASE Dxx05-A Dxx05-A-PS Dxx05-PT-KIT
Amplifier System
Amplifier
-
1 each
1 each
-
Solder-in Lead Set
-
2 each
2 each
-
Spare Damping Resistors for SI Tip
-
5 each
5 each
-
Tip Retaining Clip for SI Leads
-
2 each
2 each
-
Adhesive Tape
-
1 set
1 set
-
Ground Lead
-
1 each
1 each
-
Ground Clip
-
1 each
1 each
-
Instruction Manual
-
1 each
1 each
-
Accessory Info Sheet & Quick Start Guide
-
1 each
1 each
-
Positioner Tip with Accessories
Positioner Tip (Browser)
-
-
1 each
1 each
Replacement Pogo Pins for Dxx05-PT
-
-
1 set
1 set
Positioner Tip Probe Guides
-
-
1 each
1 each
XYZ Positioner
-
-
1 each
1 each
Adhesive Tape for XYZ Positioner
-
-
1 set
1 set
Browser Wand for PT Tip
-
-
1 each
1 each
Interlock Pieces for PT Tip
-
-
1 each
1 each
Swivel for PT Tip
-
-
1 each
1 each
Platform/Cable Assembly Kit
Platform/Cable Assembly
1 each
-
1 each
-
Freehand Probe Holder
1 each
-
1 each
-
Probe Deskew Fixture
1 each
-
1 each
-
Platform/Cable Assembly Mounting Clip
1 each
-
1 each
-
Probe Cable Clamp
2 each
-
2 each
-
ESD Wrist Strap
1 each
-
1 each
-
Performance Verification Certificate
1 each
-
1 each
-
ProLink to 2.92mm Probe Adapter
(WL-2.92MM-CASE and D2505-A-PS only)
1 each
-
1 each
-
Deluxe Soft Carrying Case
1 each
-
1 each
-
3

WaveLink Series Differential Probe (13-25 GHz)
Standard Accessories WL-PLINK-A-CASE
WL-2.92MM-CASE Dxx05-A Dxx05-A-PS Dxx05-PT-KIT
Foam Insert for Carrying Case
1 each
-
1 each
-
Protective Storage Case
1 each
-
1 each
-
Plastic Tray for Storage Case
1 each
-
1 each
-
NOTE: While the amplifiers can be used with either platform/cable assembly, system bandwidth is
limited to the lowest bandwidth component. System calibration is required for all interconnected
components to guarantee system performance. Typically, a customer purchases a single
Platform/Cable Assembly that matches the Amplifier Module bandwidth rating.
M odu lar Probe Com pon ent s
Pla t for m / Ca ble Asse m b ly
This piece forms the foundation of the probe and provides an attachment for the probe amplifier to
the oscilloscope. There are two different platform/cable assemblies available depending on whether
you are connecting to ProLink inputs currently used on ≥4 GHz Teledyne LeCroy WaveMaster 8 Zi/Zi-
A models, or to 2.92mm inputs used for 25-36 GHz signals on Teledyne LeCroy WaveMaster 8 Zi-A,
LabMaster 9 Zi-A, and LabMaster 10 Zi models.
Platform/cable assembly provided with WL-PLINK-A-CASE
4

Operator's Manual
Platform/cable assembly provided with WL-2.92MM-CASE
The Platform/Cable Assembly performs the following important functions:
•It provides power to the probe amplifier from the oscilloscope.
•It communicates to the oscilloscope the identifying characteristics of the amplifier that is
connected to the probe so that the oscilloscope channel can be set to the correct probe
attenuation value automatically. Software prompts you to specify the type of tip connected
to the amplifier when this occurs.
•It transmits the amplifier output signal along a well-defined low loss transmission line into the
oscilloscope input, and terminates the probe appropriately at that point.
NOTE: Legacy WL-PLINK platform/cable assemblies are not compatible with the D1x05-A or D2x05-A
13+ GHz amplifier modules. Only the WL-PLINK-A or WL-2.92MM are compatible.
5

WaveLink Series Differential Probe (13-25 GHz)
Platform/Cable Assembly
Product Code
WaveLink ProLink Platform/Cable Assembly
WL-PLINK-A-CASE
WaveLink 2.92mm Platform/Cable Assembly
WL-2.92MM-CASE
6

Operator's Manual
LPA-2 .9 2 m m t o Pr oLink Pr obe Adapt er
This adapter provides a simple and effective method to convert a Teledyne LeCroy ProLink interface
to a Teledyne LeCroy 2.92mm interface.
Teledyne LeCroy's 2.92mm interface utilizes a 2.92mm connector for the signal, and a
LEMO connection for probe power and communication. This interface is used for >20 GHz and <=36
GHz inputs on Teledyne LeCroy oscilloscopes.
Teledyne LeCroy's ProLink interface utilizes a blind-mate adapter (BMA) connector for the signal and
6-pin connection for probe power and communication.
In order to better leverage the complete probe system amongst all possible input types, the LPA-
2.92 may be used to adapt a WL-2.92MM platform/cable assembly to a ProLink connection - saving
you from having to purchase of an additional type of Platform/Cable Assembly. This adapter is
included standard with the WL-2.92MM-CASE.
D iffe re nt ia l Am plifie r Sm a ll Tip M od ule s
This module contains the active amplifier circuitry and performs the important task of amplifying the
low-level signal at the probe tip for transmission to the oscilloscope via the Platform/Cable
Assembly.
For this 13-25 GHz probe series, Teledyne LeCroy utilizes advanced differential distributed (traveling
wave) amplifier architecture to achieve superior high frequency broadband performance. A
distributed amplifier uses a transmission line to provide inputs to a series of amplification stages.
Another parallel transmission line is used to sum the outputs of each amplification stage. The two
transmission lines are designed with specific delay and impedance characteristics to ensure that the
amplification stages are summed correctly. Since the amplifier gain stages add rather than multiply
(as in a typical cascade design), it is possible to achieve high gain over a wide frequency range with
very low inherent noise. This provides the added benefit of a lower probe attenuation, which
enables the oscilloscope to be operating in an input range which itself requires lower gain, and
hence will typically have lower noise. In addition, higher bandwidths can typically be achieved with
this amplifier architecture. Since a pure distributed amplifier provides insufficient low frequency
response, an additional amplifier is integrated into the assembly for this purpose.
7

WaveLink Series Differential Probe (13-25 GHz)
This amplifier architecture provides the following:
•Very low probe only noise (≤18 nV/√Hz). Much less than other, comparable bandwidth
probes.
•Excellent system (probe and oscilloscope) rise times. In fact, the probe, when connected to
WaveMaster 8 Zi-A, LabMaster 9 Zi-A, or LabMaster 10 Zi oscilloscopes of the same
bandwidth, causes no reduction in bandwidth or rise time compared to the oscilloscope with
a cable input.
Differential Amplifier Small Tip Module
The amplifier module is sold with a set of solder-in interconnect leads. See Solder-in Interconnect
Lead (on page 10).
8

Operator's Manual
Amplifier Modules (includes solder-in interconnect leads)
Product
Code
13 GHz WaveLink
13GHz, 2.0Vp-p, ±2.5V Offset Range, and ±4V Common Mode Range Amplifier Module with
Dxx05-SI Solder-in Lead (Qty. 2). Also Includes: Replacement Resistors (Qty. 10), Tip Retaining
Clips (Qty. 2), and Protective Storage Case.
Must be ordered with a WL-PLINK-A-CASE Platform/Cable Assembly to achieve warranted
calibration. If desired, this Amplifier Module may also be used with a WL-2.92MM-
CASE Platform/Cable Assembly with a 13 GHz bandwidth limitation. All amplifier modules and
platform/cable assemblies must be calibrated as a system at time of shipment.
D1305-A
16 GHz WaveLink
16 GHz, 2.0Vp-p, ±2.5V Offset Range, and ±4V Common Mode Range Amplifier Module with
Dxx05-SI Solder-in Lead (Qty. 2). Also Includes: Replacement Resistors (Qty. 10), Tip Retaining
Clips (Qty. 2), and Protective Storage Case.
Must be ordered with a WL-PLINK-A-CASE Platform/Cable Assembly to achieve warranted
calibration. If desired, this Amplifier Module may also be ordered with a WL-2.92MM-
CASE Platform/Cable Assembly with a 16 GHz bandwidth limitation. All amplifier modules and
platform/cable assemblies must be calibrated as a system at time of shipment.
D1605-A
20 GHz WaveLink
20GHz, 2.0 Vp-p, ±2.5V Offset Range, and ±4V Common Mode Range Amplifier Module with
Dxx05-SI Solder-in Lead (Qty. 2). Also Includes: Replacement Resistors (Qty. 10), Tip Retaining
Clips (Qty. 2), and Protective Storage Case.
Must be ordered with a WL-PLINK-A-CASE Platform/Cable Assembly to achieve warranted
calibration. If desired, this Amplifier Module may also be ordered with a WL-2.92MM-CASE
Platform/Cable Assembly with a 20 GHz bandwidth limitation. All amplifier modules and
platform/cable assemblies must be calibrated as a system at time of shipment.
D2005-A
25 GHz WaveLink
25GHz, 2.0Vp-p, ±2.5V Offset Range, and ±4V Common Mode Range Amplifier Module with
Dxx05-SI Solder-in Lead (Qty. 2). Also Includes: Replacement Resistors (Qty. 10), Tip Retaining
Clips (Qty. 2), and Protective Storage Case.
Must be ordered with a WL-2.92MM-CASE 25 GHz Platform/Cable Assembly to achieve warranted
calibration.
May also be used with a WL-PLINK-A-CASE Platform/Cable Assembly but will achieve lesser
bandwidth. All amplifier modules and platform/cable assemblies must be calibrated as a system at
time of shipment.
D2505-A
9

WaveLink Series Differential Probe (13-25 GHz)
Solder-in I nt e rconnect Le ads
The probe lead provides ability to access the signal on the device under test (DUT) without
disturbing the operation of the DUT. The solder-in probe lead provides the highest possible
performance at the expense of a non-movable installation. The design of the solder-in lead
minimizes customer circuit loading with the probe connected by providing high probe AC loading
and a wide frequency range where AC circuit loading is minimized.
The solder-in lead supplied with the kit consists of two small, pre-installed and pre-trimmed
attenuating (damping) resistors connected to a flexible transmission line terminating in a connector
mating with the amplifier. Because resistors and resistor lengths are small, this solder-in lead
provides the maximum signal fidelity and minimum circuit loading at the highest frequencies. The
resistors are soldered directly into the connection points of the circuit under test, providing a
reliable, intermittence-free connection.
Five replacement damping resistors are provided with each solder-in lead. Resistors may be
replaced in the field if the tip is damaged. See Replacing Damping Resistors on the Solder-in
Interconnect Lead (on page 39) for more information.
NOTE:
•At initial product launch, there were two different solder-in leads - a D1x05-SI and a
D2005-SI. The D2005-SI was used with the 20 GHz and the D1x05-SI was used with
13 and 16 GHz amplifiers.
•Now, these solder-in leads have been replaced with a universal Dxx05-SI used for all
bandwidths (13-25 GHz). This lead can also be used as a replacement for the D1x05-
SI and D2005-SI.
Teledyne LeCroy's solder-in probe lead uses resistors at the tip that are precisely pre-cut to the
correct length. This design provides the following advantages:
•It locates the damping resistance of the probe tip as close to the DUT as possible.
•It eliminates the need for long lengths of wire between the DUT and the damping resistor,
which impacts loading and frequency response. The resistors may still be spaced as desired to
connect to a wide variety of circuits.
•It eliminates the need to precision cut and solder small lengths of wire to the end of the
solder-in lead, and then solder these wires to the DUT.
•The damping resistors are easily replaced in the field to provide maximum serviceability and
life of the solder-in probe lead.
10

Operator's Manual
Posit ione r Tip ( Br ow se r)
The Positioner Tip (Browser) provides the ability to access the signal on the DUT without
permanently attaching a lead or other device to the DUT. The positioner tip combines high
performance with quick access to a variety of probe points when it's used as a hand-held browser
(using the Wand attachment) or as a fast and convenient method to re-position a fixed test point
(using a positioner tool, like Teledyne LeCroy's Freehand Positioner, XYZ Positioner or EZ Probe .
The carbon composite resistive pogo pin tips are adjustable from 0 to 3.5 mm (0 to 0.14") and have
0.55 mm (0.022") of Z-Axis compliance. Because of its thin form factor and spring-loaded tips, it is
ideally suited for use with multiple probes in tight areas such as the back side of boards with ball-
grid array packaged ICs.
The Positioner Tip supplied with the kit consists of two small, pre-installed carbon-composite
resistive pogo-pin tips with crowned metal caps for solid connection to the circuit. The carbon
composite resistive tips place the tip resistance as close to the circuit as possible. In addition, the
nature of the material and design minimizes skin effect at higher frequencies, a common problem
with a single conductive tip. The Positioner Tip provides the maximum signal fidelity and minimum
circuit loading at the highest frequencies.
Care should be taken when using the Positioner Tip. While the carbon composite material in the tip
is very strong, the high bandwidth nature of the probe means the diameter must be very small.
Avoid lateral motion against the circuit trace with the tip, and do not exceed the pogo pin Z-Axis
compliance.
NOTE: Some mechanical positioners (such as the EZ Probe) might have the capability to exert
excessive Z-Axis compliance during setup, so be extra careful with these types of mechanical
positioners.
Two replacement resistive tips are provided with the Positioner Tip. These tips may be replaced in
the field if the tip is damaged. See Correctly Replacing Carbon Composite Resistive Pogo-Pin Tips in
Dxx05-PT (on page 42) for more information.
11

WaveLink Series Differential Probe (13-25 GHz)
Positioner Tip (Browser) Kit
Positioner Tip (Browser) Kit (includes tip and accessories)
Product Code
WaveLink Dxx05-PT (20 GHz rating) Adjustable Positioner Tip Kit. For use with D1305-A,
D1605-A, D2005-A, and D2505-A amplifiers. Includes XYZ Positioner Assembly with
Mechanical Interconnects, Adhesive Kit, Connection Guides, Hand-held Wand, and
replacement Carbon Composite Pogo-Pin Tips (Qty. 2).
Dxx05-PT-KIT
Com ple t e Pr obe Sy st e m ( PS)
By design, the WaveLink probes are modular in nature. However, to make selection easy, a
complete probe system is available for purchase. These probe systems are all-inclusive and contain
the following items:
•Platform/Cable Assembly Kit
•LPA-2.92 to ProLink Adapter (25 GHz kits only)
•Amplifier System (with SI Lead Set)
•Positioner Tip (Browser) Kit
Just choose the appropriate bandwidth (13, 16, 20, or 25 GHz) for the probe system.
NOTE: The 25 GHz probe system Positioner Tip (Browser) is rated to 20 GHz (guaranteed) and 22
GHz (typical).
12

Operator's Manual
Complete Probe System (PS)
Standard Accessories
D1x05-A-PS
D2005-A-PS
D2505-A-PS
WL-PLINK-A-CASE Platform/Cable Assembly Kit
1 each
1 each
WL-2.92MM-CASE Platform/Cable Assembly Kit
1 each
LPA-2.92 to ProLink Adapter
1 each
D1x05-A Amplifier System
1 each
D2x05-A Amplifier System
1 each
1 each
Dxx05-PT-KIT Positioner Tip (Browser) Kit
1 each
1 each
1 each
13