Keysight MX0023A InfiniiMax RC
Probe Amplifier and Probe Heads
User’s Guide
Notices
CAUTION
WARNING
© Keysight Technologies, 2020, 2022
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Manual Part Number
MX0023-97000
Edition
Third Edition, April 2022
Published by:
Keysight Technologies, Inc.
1900 Garden of the Gods Road
Colorado Springs, CO 80907 USA
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Safety Notices
A CAUTION notice denotes a hazard.
It calls attention to an operating
procedure, practice, or the like that,
if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a CAU-
TION notice until the indicated conditions are fully understood and
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A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like
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Contents
1 MX0023A Probe Amplifier - Overview
2 Available Probe Heads and Accessories - Overview
Introduction 8
MX0023A Key Features 10
Compatibility with Keysight Oscilloscopes 11
Introduction to Supported Probe Heads 14
When to Use Which Probe Head 16
Other Recommended Accessories and Kits 19
N5450B Extreme Temperature Cable Extension Kit 19
N2880A InfiniiMax In-Line Attenuator Kit 19
N2881A InfiniiMax DC Blocking Capacitors 20
MX0102A Soldering Toolkit 20
N2852A AutoProbe II to AutoProbe III Adapter 23
MX0104A Performance Verification and Deskew Fixture Kit 23
N5448B (25cm) / N2823A (1m) Coaxial Phase Matched Cable Pair 24
N2812B (1m) High Performance Input Cable 24
E2669B Differential Connectivity Kit 25
3 Safety and Regulatory Information
Safety Checks and Warnings 28
Instrument Markings and Symbols 30
4 Proper Handling of Probe Amplifier and Probe Heads
Avoiding Damage and Costly Repairs 32
Using a static-safe workstation 32
Probe Amplifier and Probe Heads Handling Precautions 34
Precautions for the Probe Amplifier 34
Precautions for the Probe Cable 34
Precautions while Connecting and Disconnecting Probe Heads 35
Safely Connecting/Disconnecting the Probe Amplifier and Oscilloscope 35
Safely Connecting/Disconnecting the Probe Amplifier and Probe Head 35
Moving the Probing Setup to Different Probing Locations 35
Strain Relieving Techniques for Probe Heads 37
Tack-putty 38
Low-temperature hot glue 38
3
Velcro Pads 39
Tips for Soldering Probe Heads 40
Cleaning 41
5 Characteristics and Specifications
MX0023A Probe Amplifier Warranted Specifications 44
MX0023A Probe Amplifier Characteristics 45
InfiniiMax RC Probe Heads Characteristics 47
Environmental and General Characteristics 48
6 MX0100A InfiniiMax Micro Probe Head
Overview 50
MX0100A Probe Head Kit Components 51
MX0100A Dimensions 51
MX0100A Input Impedance 53
Setting up and Using the MX0100A Probe Head 56
Trimming the Lead Wires of MX0100A Probe Head 56
Soldering an MX0100A Probe Head to DUT 57
Maintaining the MX0100A Probe Head 60
MX0100A Probe Head Handling Precautions 60
Replacing the MX0100A Probe Tip Lead Wires 63
Extreme Temperature Testing with the MX0100A Probe Head 66
7 MX0106A InfiniiMax Differential Solder-in Probe Head
Overview 68
MX0106A Probe Head Supplied Accessories 68
MX0106A Dimensions 68
MX0106A Input Impedance 70
Setting up and Using the MX0106A Probe Head 73
Adjusting the Spacing between MX0106A Wires 73
Installing / Replacing the MX0106A Probe Head Wire Leads 73
Connecting the MX0106A Probe Head to DUT 77
Soldering the MX0106A Probe Head to DUT 78
Extreme Temperature Testing with the MX0106A Probe Head 79
8 N2839A InfiniiMax II Browser Probe Head
Overview 82
N2839A Browser Probe Head Components 82
N2839A Supplied Accessories 82
N2839A Dimensions 84
N2839A Input Impedance 84
Using the N2839A Browser Probe Head 88
4 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Adjusting Spacing Between the Browser Tips 88
Hands-Free Probing 88
Maintaining the N2839A Probe Head 90
N2839A Probe Head Handling Precautions 90
Location of Serial Number 90
Replacing the Browser’s Tips 91
9 MX0105A InfiniiMax Differential SMA Probe Head
Overview 94
MX0105A Probe Head Components 94
MX0105A Dimensions 96
MX0105A SPICE Subcircuit Data 97
MX0105A Input Return Loss (S11) 98
10 N5425B InfiniiMax Differential ZIF Probe Head
Overview 100
Supported ZIF Tips 100
N5425B Probe Head and ZIF Tips Dimensions 102
N5425B Input Impedance 104
SPICE Model of N5425B Probe Head with N5426A ZIF Tip Attached 105
SPICE Deck of N5425B Probe Head with N5426A ZIF Tip Attached 106
SPICE Model of the N5426A ZIF Tip 108
SPICE Deck of N5426A ZIF Tip 109
Using the N5425B Probe Head with N5426A ZIF Tips 111
Using the N5425B Probe Head with N2884A Fine Wire ZIF Tip 116
Maintaining the N5425B Probe Head 123
Fine Wire ZIF Tips Handling Precautions 123
11 Configuring Infiniium Software for Probe Amplifier and Probe Heads
Selecting Components Used in the Probing Setup 126
Configuring Offset Behavior 129
Calibrating your InfiniiMax RC Probe 131
Calibration Overview 131
Performing DC Gain / Offset and Skew Calibration 132
12 Making Measurements
Probing Single-ended Signals using a Differential Probe Head 138
Extreme Temperature Probing 139
InfiniiMax RC Probe Heads Supporting Extreme Temperature Testing 139
Probe Heads Discoloration 139
Cautions Associated with Extreme Temperature Testing 140
Probing Ungrounded Devices 141
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 5
Blocking out the DC Component of the Input Signal 142
13 InfiniiMax RC Probe Amplifier and Probe Heads System Responses
Typical Corrected System Frequency Response 144
Typical Step Response of Corrected System 145
Typical CMRR 146
14 Performance Verification
Before you Start 150
Recommended Test Interval 150
To Test Bandwidth 151
Required Test Equipment 151
Procedure 152
To Test Input Resistance 157
Required Test Equipment 157
Procedure 157
Performance Test Record 161
15 Returning a Probe/Probe Head for Repair/Service
Contacting Keysight Technologies for Technical Assistance 164
16 Replacement Parts
Index
MX0100A Probe Head 165
MX0106A Probe Head 165
N2839A Browser Head 166
Other Replacement Parts 166
6 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Keysight InfiniiMax RC Probe Amplifier and Probe Heads
User’s Guide
1 MX0023A Probe Amplifier -
Overview
Introduction 8
MX0023A Key Features 10
Compatibility with Keysight Oscilloscopes 11
7
1 MX0023A Probe Amplifier - Overview
Output Connector
(with AutoProbe II
Connection to
Oscilloscope)
Probe Head Connector
Menu Button
Polarity
Markings
Channel Identification Rings
Ground Connection
Introduction
The MX0023A InfiniiMax RC probe amplifier provides high bandwidth of up to 25
GHz and an RC input impedance profile for extremely low mid-band loading,
which is necessary to address modern high-speed probing requirements.
This probe amplifier supports a wide variety of flexible connectivity solutions,
covering today's emerging signaling standards such as DDR5/LPDDR5 and other
high-speed signal debug and validation test needs.
With an extensive range of supported probe heads and accessories, this probe
amplifier caters to most of the probing situations including harder to probe small
geometry target devices and extreme environment testing.
8 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Figure 1 MX0023A Probe Amplifier
Table 1 MX0023A Probe Amplifier Components
Probe Amplifier Component Description/Usage
Output Connector
(with AutoProbe II Connection to
Oscilloscope)
Menu Button Press this button to bring up the Infiniium GUI’s Probe
The probe amplifier uses the Keysight AutoProbe II (3.5 mm)
interface that allows it to connect directly to a compatible
Keysight oscilloscope (see page 11 ).
The oscilloscope’s AutoProbe interface provides the probe power,
probe offset, and auto configuration of probe type and attenuation
setting on connection.
Configuration dialog box on the oscilloscope. Use this dialog box
to configure probe settings (see page 125 ).
MX0023A Probe Amplifier - Overview 1
Table 1 MX0023A Probe Amplifier Components
Probe Amplifier Component Description/Usage
Channel Identification Rings When multiple probes are connected to the oscilloscope, use the
channel identification rings to associate the channel inputs with
each probe. Place one colored ring near the probe’s output
connector and place an identical color ring near the probe head
connector.
Polarity Markings Polarity markings to indicate the positive (+) and negative (-)
inputs of the probe amplifier.
Probe Head Connector Use this connector to connect your probe amplifier to one of the
supported probe heads (see page 14).
Ground Connection Allows you to connect the DUT ground to the probe amplifier
ground using a ground lead wire.
This is needed if the DUT is not grounded to the oscilloscope via
the AC mains ground (see page 141).
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 9
1 MX0023A Probe Amplifier - Overview
MX0023A Key Features
Yielding Accurate
Measurements
“RC" Input
Impedance
Architecture
Two Input
Attenuation
Ranges
The MX0023A probe amplifier has built-in probe specific s-parameter correction
filter to ensure a flat frequency response. This unique s-parameter of the probe
amplifier is used with the s-parameters of various supported probe heads to
further flatten the magnitude and phase response of the probe for high accuracy
measurements. Each probe head has different s-parameters stored in the
oscilloscope’s firmware. On selecting the probe head in the oscilloscope’s
software, the appropriate s- parameters for the probe head are used in conjunction
with the probe amplifier’s s-parameters to compute the overall probe correction
for your measurement case.
The probe amplifier’s RC architecture makes it suitable for probing buses that
transition to a “high Z” state or for probing signals with high impedance.
The probe amplifier supports the following two flexible input dynamic ranges.
• 600mVpp @1:1
•2.5Vpp @4:1
The input range is automatically configured depending on the vertical scale of the
oscilloscope.
AC Calibration
Mode
High Bandwidth
Probing
Requirements
Applicable
System
Bandwidth
10 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
The probe amplifier supports the Vout/Vin calibration to accurately show the
voltage at the tip of the probe (Vout/Vin) as loaded by the probe. VIn represents a
new signal with the probe’s effect included (the voltage at the probe’s tip), and
Vout represents the signal as passed through the probe.
The probe amplifier efficiently fulfills the probing bandwidth requirements
between 6-25 GHz. For instance, it is best suited for serial links operating up to 12
Gbps that require the probe bandwidth up to 25 GHz.
For any combination of a probe head with the MX0023A probe amplifier, the
applicable system bandwidth is the lesser of the supported bandwidths of the
probe head or the probe amplifier. The MX0023A supports 25 GHz bandwidth.
Therefore, if, for example, you use it with the MX0106A probe head, which
supports a 23 GHz bandwidth, then this combination would produce a system
with a 23 GHz bandwidth.
Compatibility with Keysight Oscilloscopes
NOTE
Compatible Oscilloscope Adapter Required
Infiniium Oscilloscopes with AutoProbe II Interface
UXR-Series (13-33 GHz models) none 10.25 or higher
90000 Q, V, X, Z-Series none 6.55 or higher
Infiniium Oscilloscopes with AutoProbe III Interface
MX0023A Probe Amplifier - Overview 1
Required Infiniium
Software Version
UXR-Series (40 GHz or higher
models)
N2852A AutoProbe II to AutoProbe
III Adapter
(Visit
http://www.keysight.com/find
/N2852A to know more about this
adapter.)
10.25 or higher
The MX0023A probe amplifier is NOT compatible with Infiniium 9000
Series, InfiniiVision, or any previous generation Keysight oscilloscopes.
Is your oscilloscope software up-to-date?
Keysight periodically releases software updates to support your probe, fix known defects, and
incorporate product enhancements. To download the latest firmware, go to www.Keysight.com and
search for your oscilloscope’s model number. Click the “Drivers, Firmware & Software” tab under the
Technical Support link.
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 11
1 MX0023A Probe Amplifier - Overview
12 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Keysight InfiniiMax RC Probe Amplifier and Probe Heads
User’s Guide
2 Available Probe Heads and
Accessories - Overview
Introduction to Supported Probe Heads 14
When to Use Which Probe Head 16
Other Recommended Accessories and Kits 19
N5450B Extreme Temperature Cable Extension Kit 19
N2880A InfiniiMax In-Line Attenuator Kit 19
N2881A InfiniiMax DC Blocking Capacitors 20
MX0102A Soldering Toolkit 20
N2852A AutoProbe II to AutoProbe III Adapter 23
MX0104A Performance Verification and Deskew Fixture Kit 23
N5448B (25cm) / N2823A (1m) Coaxial Phase Matched Cable Pair 24
N2812B (1m) High Performance Input Cable 24
E2669B Differential Connectivity Kit 25
This chapter provides an overview of various probe heads and accessories that are
compatible for use with the MX0023A probe amplifier.
13
2 Available Probe Heads and Accessories - Overview
NOTE
Introduction to Supported Probe Heads
A probe amplifier connects to a DUT via a probe head.
When using the MX0023A probe amplifier, you can choose from a wide variety of
probe heads and accessories to support your specific probing and DUT
connectivity requirements.
The probe heads supported for MX0023A are primarily categorized as follows:
Probe Head Where to Find Detailed Information
New InfiniiMax RC Probe Heads
(supporting higher bandwidths up to
25 GHz)
Existing InfiniiMax I and II Probe Heads
(supporting bandwidths up to 12 GHz)
Detailed information on each of these probe heads is
available as separate chapters in this guide.
Most of the existing InfiniiMax I and II probe heads are
compatible for use with the MX0023A probe amplifier (see
Figure 2 on page 15).
Detailed information on each of these probe heads is
available in the Keysight 1168/9B-Series Differential and
Single-Ended Probes user’s guide.
This guide is available for download from the Document
Library tab on www.keysight.com/find/1169B.
InfiniiMax III and III+ probe heads are NOT compatible for use with the
MX0023A probe amplifier.
The following figure displays these supported probe heads and accessories for
MX0023A.
14 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Available Probe Heads and Accessories - Overview 2
Figure 2 MX0023A Probe Family Diagram
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 15
2 Available Probe Heads and Accessories - Overview
When to Use Which Probe Head
The following table provides a high-level comparison of the supported probe
heads to help you assess when to use which probe head with MX0023A.
These probe heads are listed in the order of their maximum supported bandwidth
when used with the MX0023A probe amplifier.
Table 2 Supported Probe Heads (Sheet 1 of 3)
Probe Head (listed in the order of BW) Recommended Usage Bandwidtha
1. MX0100A InfiniiMax Micro Probe Head (refer to page 49 for details)
• Light, flexible, and smallest solder-in head
25 GHz 0.17 pF 0.26 pF
• Best suited for providing uncompromised
access to small geometry, high-density
fine-pitch targets
• Recommended for high-speed signaling
standards DDR4, DDR5, LPDDR4, LPDDR5,
MIPI D-Phy 2.0/3.0, C-Phy, and M-Phy
2. MX0106A Differential Solder-in Probe Head (refer to page 67 for details)
• The most reliable semi-permanent signal
access for high fidelity measurement
23 GHz 0.17 pF 0.29 pF
• Hands-free access to fine-pitch
components in high-density electronics
• Recommended for MIPI D-Phy 2.0 and
C-Phy 2.0
3. N2839A InfiniiMax II Browser Probe Head (refer to page 81 for details)
• Hand-held browsing for general purpose
troubleshooting of a circuit board
21 GHz 0.20 pF 0.34 pF
• Adjustable probe tips for different circuit
geometries
Cdiff
(pF)
b
Cse
(pF)
c
4. MX0105A Differential SMA Probe Head (refer to page 93 for details)
• Suitable for differential cabled
measurement using only one channel of the
oscilloscope
20 GHz N/A N/A
• Offset matched SMA cables adapt to
variable spacing
• Ideal for signaling standards such as HDMI
and MIPI Mphy that require termination to a
common DC voltage (± 4 V) rather than a
ground
16 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Table 2 Supported Probe Heads (Sheet 2 of 3)
Available Probe Heads and Accessories - Overview 2
Probe Head (listed in the order of BW) Recommended Usage Bandwidtha
5. N5425B Differential ZIF Probe Head (refer to page 99 for details)
• Ideal for probing multiple signals in tight
spaces such as DDR memory
• ZIFs can be installed at multiple locations
on your DUT
• Ideal for hard to reach, small fine pitch
targets
• ZIF feature allows connection without
compressing the delicate wires which
cannot support this compression
With N5426A ZIF Tip
18 GHz 0.33 pF 0.53 pF
N2884A Fine Wire ZIF Tip
18 GHz 0.35 pF N/A
• Recommended for DDR4, DDR5, LPDDR4,
MIPI D-Phy 2.0 and C-Phy 2.0
6. N5381B Differential Solder-in Probe Head (refer to 1168/9B-Series Probes user’s guide)
• Solder-in hands free connection
12 GHz 0.21 pF 0.35 pF
• Recommended for DDR4, DDR5, LPDDR4,
MIPI D-Phy 2.0
Cdiff
(pF)
b
Cse
(pF)
c
7. N5380B Differential SMA Probe Head (refer to 1168/9B-Series Probes user’s guide)
• Suitable for differential cabled
measurement using only one channel of the
oscilloscope
12 GHz N/A N/A
• Offset matched SMA cables adapt to
variable spacing
• Ideal for signaling standards such as HDMI
and MIPI Mphy that require termination to a
common DC voltage (± 4 V) rather than a
ground
Note: The plastic housing on the N5380B
needs to be removed to mate with the
MX0023A amplifier. Refer to the
1168/9B-Series Probes user's guide for
details of this removal procedure.
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 17
2 Available Probe Heads and Accessories - Overview
Table 2 Supported Probe Heads (Sheet 3 of 3)
Probe Head (listed in the order of BW) Recommended Usage Bandwidtha
8. N5425B ZIF Probe Head with Long Wire ZIF Tips (refer to 1168/9B-Series Probes user’s guide)
• The long-wired ZIF tips connection is ideal
for variable pitch targets, including larger
pitches
• Ideal for probing multiple signals in tight
spaces such as DDR memory
• ZIFs can be installed at multiple locations
on your DUT
With 7mm N5451A ZIF Tip
~9.9 GHz
(0º tip span)
~4.4 GHz
(60º tip span)
With 11mm N5451A ZIF Tip
• ZIF feature allows connection without
compressing the delicate wires which
cannot support this compression
• Recommended for DDR4, DDR5, LPDDR4,
MIPI D-Phy 2.0 and C-Phy 2.0
9. E2677B Differential Solder-in Probe Head (refer to 1168/9B-Series Probes user’s guide)
~5 GHz
(0º tip span)
~3.3 GHz
(60º tip span)
• Hands-free solder-in connection 12 GHz 0.27 pF 0.44 pF
b
Cdiff
(pF)
0.6 pF 0.58 pF
0.68 pF 0.68 pF
Cse
(pF)
c
10. E2678B Differential Socketed Probe Head (refer to 1168/9B-Series Probes user’s guide)
• Measuring signal via a plug-on socket
connection
12 GHz 0.34 pF 0.56 pF
• Removable connection using solder-in
resistor pins for hard to reach targets
11. E2675B Differential Browser Probe Head (refer to 1168/9B-Series Probes user’s guide)
• Hand-held browsing for general purpose
troubleshooting of a circuit board
a The bandwidth listed in this table is the maximum bandwidth supported by each probe head. For any combination of a probe head with a probe
amplifier, the applicable bandwidth is the lesser of the supported bandwidths of the probe head or the probe amplifier. For example, using the
MX0023A, which supports a 25 GHz bandwidth, with a MX0106A, which supports a 23 GHz bandwidth, would produce a system with a 23 GHz
bandwidth.
b Capacitance seen by differential signals
c Capacitance seen by single-ended signals
6 GHz 0.32 pF 0.57 pF
18 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Available Probe Heads and Accessories - Overview 2
Attenuator
Other Recommended Accessories and Kits
In addition to the probe heads listed in the previous section, there are a number of
kits and accessories available for use with the MX0023A probe amplifier.
This section provides an overview to these recommended accessories and kits. You
can either order these at the time of ordering the probe amplifier or separately
later.
N5450B Extreme Temperature Cable Extension Kit
The N5450B extreme temperature cable extension kit
allows you to use the MX0023A probe amplifier to probe a
device in an environment chamber.
The MX0023A probe amplifier has an operating
temperature range from 5
subjected to extreme temperatures. But a few probe heads
can be operated over a much larger range of temperatures.
The N5450B extension cables allow you to physically
separate the amplifier from the probe head so that the
probe head can be operated inside a temperature chamber while the probe
amplifier remains outside the chamber.
o
C to 40o C and cannot be
Refer to the topic “Extreme Temperature Probing" on page 139 to know more.
Table 3 N5450B Kit Contents
Item Qty Supplied Description
Phase-matched RF
Cables
Coupling Tag 1 A coupling tag is included with the cables to ensure
2 To ensure a high-quality measurement, the N5450B
N2880A InfiniiMax In-Line Attenuator Kit
The N2880A In-Line Attenuators allow you to increase the maximum input range
and offset range of the MX0023A probe amplifier so that you can measure signals
larger than the probe’s maximum input range and offset range.
cable set have been phase-matched at the factory.
that the cables stay as a matched pair.
Figure 3 Attenuators Between a Probe Amplifier and a Probe Head
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 19
2 Available Probe Heads and Accessories - Overview
DC Blocking Capacitor
Table 4 N2880A Kit Contents
Item Qty Supplied Description
6 dB Attenuators 2 These attenuators come as matched pairs and should only be
12 dB Attenuators 2
20 dB Attenuators 2
N2881A InfiniiMax DC Blocking Capacitors
The N2881A InfiniiMax DC Blocking Capacitors block out the DC component of the
input signal (up to 30 Vdc). You can place these between the MX0023A probe
amplifier and probe head as shown in the picture below.
used with each other. Each attenuator has a serial number.
The pair of matching attenuators in each set will have the
same four digit numeric prefix and will differ by the last letter
(one attenuator in the matched pair will be labeled A and the
other will be labeled B).
Figure 4 Placement of DC Blocking Capacitor Between a Probe Amplifier and a Probe Head
You can also use these DC blocking capacitors with the N2880A In-Line
Attenuators. The order of the two products in the probing system (that is, which
one is closer to the probe amplifier) does not matter.
Refer to the topic “Blocking out the DC Component of the Input Signal" on
page 142 to know more.
MX0102A Soldering Toolkit
The MX0102A soldering toolkit provides tools that can make soldering tasks
easier. For instance, you can use the tools available in this kit while soldering the
lead wires of the MX0100A Micro probe head to a DUT (see page 57 for details).
20 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Available Probe Heads and Accessories - Overview 2
Straight
Tweezers
Cutting
Tweezer s
Double-sided Foam Tape
Low Temperature
Solder Wire
Regular Solder Wire
Probe Tip Wire
Kapton Tape
Figure 5 MX0102A soldering toolkit contents
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 21
2 Available Probe Heads and Accessories - Overview
Table 5 Accessories supplied in the soldering toolkit
Description
Straight Tweezers
(Anti-magnetic straight pointed tip 120mm)
For general purpose manipulation / movement of com-
ponents such as probe tip wires and probe head.
Cutting Tweezers
(Narrow oblique head 115mm)
To cut a probe tip wire to a desired length.
Kapton Tape (36 yards roll)
To provide strain-relief to the neck portion of the probe
head by taping it to a flat surface (such as a DUT circuit
board).
Double-sided Foam Tape
To provide strain-relief to either the neck portion of the
probe head or the plastic housings by taping it to a flat
surface such as a tabletop or a DUT circuit board.
Regular Solder Wire
Lead free, .009" diameter, 2 feet long
To attach the probe tip wires to a DUT using standard
lead-free soldering temperatures (330 °C to 350 °C).
(NOTE: This alloy melts at 217
o
C.)
Qty
Supplied
Part
Number
a
1 8710-2837
1 8710-2838
1 0460-3121
10 0460-3122
1 MX0102-21302
Low Temperature Solder Wire
1 MX0102-21303
Lead free, .010" diameter, 2 feet long
To attach the probe tip wires to a DUT using a low tem-
perature setting on your soldering iron.
(NOTE: This alloy melts at 138
Probe Tip Wire
o
C.)
1 MX0102-21301
.004" diameter, 2 feet long
To add ground wires to your probe tip if InfiniiMode mea-
surements (differential, single ended, and common
mode signals with a single probe tip) are desired. Clip as
short as possible using the cutting tweezers included in
the kit.
a You can reorder these items using the part numbers included in the table above.
22 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Available Probe Heads and Accessories - Overview 2
CAUTION
N2852A AutoProbe II to AutoProbe III Adapter
This adapter allows you to connect the MX0023A probe
amplifier that has the AutoProbe II interface to the
Keysight UXR-Series (40 GHz or higher) Infiniium
oscilloscope that has the AutoProbe III interface.
To know more about the N2852A adapter, visit
http://www.keysight.com/find/N2852A and then
download the adapter’s user’s guide available in the
Document Library tab.
Care should be taken while handling the N2852A adapter's RF
cable. Avoid bending this cable backwards or kinking the cable to
ensure measurements accuracy.
MX0104A Performance Verification and Deskew Fixture Kit
The MX0104A PV/Deskew fixture helps you to calibrate /
deskew or verify the performance of your MX0023A
probe amplifier.
Table 6 MX0104A Kit Contents
Item Qty Supplied
50Ω SMA Terminator 1
Deskew Fixture 1
The MX0104A fixture is used with the following two components to promote the
proper positioning of the probe during the deskew/PV procedure.
Table 7 MX0104A Optional Components
Option Usage
N2787A 3D
Probe
Positioner
For more sophisticated probe head positioning
Highly recommended for MX0023A probe amplifier.
Also, highly recommended when using probe heads such
as the browser probe head to hold the browser in place.
Option 001:
Performance
Verification
Stand
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 23
For convenient, handy, and low-cost probe head
positioning
Recommended for use with InfiniiMax III/III+ probe
amplifiers and heads only
2 Available Probe Heads and Accessories - Overview
CAUTION
• To know how to use this fixture for deskew/calibration of your probe, refer to
the chapter “Performing DC Gain / Offset and Skew Calibration" on page 132.
• To know how to use this fixture for performance verification of your probe, refer
to the chapter “Performance Verification" on page 149.
N5448B (25cm) / N2823A (1m) Coaxial Phase Matched Cable Pair
The N5448B (25cm) / N2823A (1m) phase matched cable pair allows you to
extend the cable length of the MX0105A SMA probe head and add flexibility and
convenience to the probing setup. You can easily replace the supplied rigid cables
of the SMA probe head with these cables. These cables support 2.92 mm
male-to-2.92 mm male connection. Skew error between two cables are matched
to within 5 psec, and the cable supports up to 40 GHz.
For detailed specifications of these cables, refer to the user’s guide available in the
Document Library tab of www.keysight.com/find/N5448B.
Figure 6 N2823A and N5448B Coaxial Phased Matched Cable Pairs
The maximum bend radius for these coaxial cable pairs is 30 mm.
Bending these cables at too tight a radius or twisting the cables
can cause damage, reduce performance, and impact the
precision of these cables.
N2812B (1m) High Performance Input Cable
The N2812B input cable provides excellent flexibility, high quality measurements,
and a warranted bandwidth of 32 GHz. You can use this cable with the Infiniium V,
90000-X/Q, UXR <=33 GHz series oscilloscopes.
24 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
E2669B Differential Connectivity Kit
The E2669B differential connectivity kit provides multiple quantities of the:
• following three InfiniiMax I probe heads supported for use with the MX0023A
probe amplifier.
• accessories needed for these three probe heads.
Available Probe Heads and Accessories - Overview 2
Figure 7 E2669B Differential Connectivity Kit (not to scale)
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 25
2 Available Probe Heads and Accessories - Overview
NOTE
Table 8 E2669B Kit Contents
Probe Heads Included in the Kit
E2678B Differential Socketed Head 2
E2677B Differential Solder-In Head 4
E2675B Differential Browser 1
Qty
Supplied
Qty
Other Accessories Included in the Kit
160W damped wire accessory 12
82W resistor for full bandwidth 96
Socket for 25 mil (25/1000 inch)
square pins, female on both ends
25 mil female socket w/20 mil round
male pin on other end
Heat shrink socket accessory 8
Header adapter, 91W 4
82W resistor template 1
91W resistor for full bandwidth 80
150W resistor for medium bandwidth 40
91W resistor template 1
150W resistor template 1
Resistive tip (blue), 91W 20
Ergonomic handle 1
Supplied
8
8
E2678B E2677B E2675B
✓
✓
✓
✓
✓
✓
✓
Used With
✓
✓
✓
✓
Part Number
(Not orderable)
01130-21303
01130-81506
01131-85201
01131-85202
01130-41101
01130-63201
01131-94309
1NC3-1091
1NC3-1150
01131-94311
01131-94308
✓
✓
01131-62107
01131-43201
Resistor performance. The S2 resistors were changed from 100W to 91W
for slightly better performance. Either value produces a response that is
well within specifications. If you have some of the older 100W resistors,
ensure that you use either two 100W or two 91W resistors. Do not mix
them.
26 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Keysight InfiniiMax RC Probe Amplifier and Probe Heads
User’s Guide
3 Safety and Regulatory
Information
Safety Checks and Warnings 28
Instrument Markings and Symbols 30
27
3 Safety and Regulatory Information
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Safety Checks and Warnings
This manual provides information and warnings essential for operating this probe
and probe heads in a safe manner and for maintaining these in safe operating
condition. To ensure safe operation and to obtain maximum performance from the
probe, carefully read and observe the following warnings, cautions, and notes.
These product have been designed and tested in accordance with accepted
industry standards, and have been supplied in a safe condition. The
documentation contains information and warnings that must be followed by the
user to ensure safe operation and to maintain these products in a safe condition.
Note the external markings on the products that are described in this document.
To avoid personal injury and to prevent fire or damage to these products or
products connected to these, review and comply with the following safety
precautions.
Use Only Grounded Instruments. Do not connect the probe’s ground lead to a
potential other than earth ground. Always make sure the probe and oscilloscope are
grounded properly. Before making connections to the input leads of this probe,
ensure that the probe’s output connector is attached to the channel input of the
oscilloscope and the oscilloscope is properly grounded.
Connect and Disconnect Properly.
See page 35 for the sequence in which connection/disconnection needs to be
done.
Observe Probe Voltage Ratings.
Do not apply any electrical potential to the probe input which exceeds the maximum
rating of the probe. See page 45 for maximum input voltage ratings.
These probe assemblies are NOT intended for measurements on mains circuits (CAT
II, CAT III, and CAT IV).
Indoor Use Only.
Do not operate in wet/damp environments. Keep product surfaces dry and clean.
Never leave the probe connected to a conductor while it is not connected to an
oscilloscope or voltage measuring instrument.
Periodically inspect the probe and probe wires to check for any damage.
Do Not Operate With Visible or Suspected Failures. If you suspect there is damage,
have it inspected by a Keysight authorized service personnel.
28 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
Safety and Regulatory Information 3
WARNING
WARNING
WARNING
CAUTION
WARNING
WARNING
WARNING
WARNING
Do not operate the probe or oscilloscope in the presence of flammable gasses or
fumes. Operation of any electrical instrument in such an environment constitutes a
definite safety hazard.
If the probe/probe heads are used in a manner not specified by the manufacturer, the
protection provided by these may be impaired.
Do not install substitute parts or perform any unauthorized modification to the probe
amplifier / probe head.
Do not attempt internal service or adjustment. Service should be carried out by a
Keysight Technologies authorized service personnel. For any service needs, contact
Keysight Technologies. See page 163 to know more.
The probe cable is a sensitive part of the probe and, therefore, you should be careful
not to damage it through excessive bending or pulling. Avoid any mechanical shocks
to this product in order to guarantee accurate performance and protection.
Concerning the Oscilloscope or Voltage Measuring Instrument to Which
the Probe is Connected
Whenever it is likely that the ground protection is impaired, you must make the
instrument inoperative and secure it against any unintended operation.
If you energize the instrument by an auto transformer (for voltage reduction or
mains isolation), the ground pin of the input connector terminal must be connected
to the earth terminal of the power source.
Before turning on the instrument, you must connect the protective earth terminal of
the instrument to the protective conductor of the (mains) power cord. The mains
plug shall only be inserted in a socket outlet provided with a protective earth
contact. You must not negate the protective action by using an extension cord
(power cable) without a protective conductor (grounding). Grounding one conductor
of a two-conductor outlet is not sufficient protection.
Capacitors inside the instrument may retain a charge even if the instrument is
disconnected from its source of supply.
InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide 29
3 Safety and Regulatory Information
Instrument Markings and Symbols
Symbol Description
This symbol indicates the Environmental Protection Use Period (EPUP)
for the product’s toxic substances for the China RoHS requirements.
Notice for the European Community: This product complies with the
WEEE Directive (2002/96/EC) marking requirements. The affixed label
indicates that you must not discard this electrical/electronic product in
domestic household waste.
Product Category: With reference to the requirement types in the WEEE
Directive Annex I, this product is classed as a “Monitoring and Control
Instrumentation” product.
Do not dispose in domestic household waste.
To return unwanted products, contact your local Keysight office.
This symbol indicates that it is necessary for you to follow the
instructions in the user’s guide to protect against damage to the product
or personal injury.
Contains parts or assemblies susceptible to damage by electrostatic
discharge (ESD). Use electrostatic discharge protective handling
procedures. See page 32 to know more.
Earth (ground) TERMINAL. Refer to the instructions accompanying this
symbol in this guide.
30 InfiniiMax RC Probe Amplifier and Probe Heads User’s Guide
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