Keysight Technologies U4205A User manual

Keysight U4205A Direct Connect
34-Channel Mictor Probe
User Guide

2Keysight U4205A Direct Connect 34-Channel Mictor Probe

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Manual Part Number
U4205-97000
Edition
First Edition, November 2014
Keysight Technologies
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Colorado Springs, CO 80907 USA
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3Keysight U4205A Direct Connect 34-Channel Mictor Probe

4Keysight U4205A Direct Connect 34-Channel Mictor Probe

Keysight U4205A Direct Connect 34-Channel Mictor Probe 5
Contents
1 U4205A Overview
U4205A - At a Glance 8
The U4205A 34-channel 38-pin Single-ended Mictor Probe: 8
Introduction to U4205A Use 9
Descriptions of U4205A direct connect probe 9
Number of probes required 9
Maximum state speed supported 9
The U4205A 34-Channel 38-pin Single-Ended Mictor Probe 10
2 Mechanical Considerations
Characteristics 12
Probe Dimensions 13
MICTOR Connector Dimensions 14
Support Shroud Dimensions 15
Footprint Dimensions 16
U4205A 38-pin single-ended probe pin out table 17
3 Operating U4205A Probe
Equivalent Probe Load 20
Measured versus modeled input impedance 21
4 Circuit Board Design
Transmission Line Considerations 24

6Keysight U4205A Direct Connect 34-Channel Mictor Probe
Contents
16850 Series and U4154A Data and Clock Inputs per Operating
Mode 25
Thresholds 26
U4205A Direct-Connect 34-Channel 38-pin Single-Ended Mictor
Probe 26
Signal Access 27
Labels split across probes 27
Re-ordered bits 27
5 Recommended Reading
For More Information 30
MECL System Design Handbook 30
High-speed Digital Design 30
Designing High-speed Target Systems for Logic Analyzer Probing 30
6 Connectors and Shrouds
Ordering Probing Connectors and Shrouds 32
7 Safety Information
Safety Symbols 34
Informations relatives à la sécurité 36
Symboles de sécurité: 37

Keysight U4205A Direct Connect 34-Channel Mictor
Probe
User Guide
1U4205A Overview
U4205A - At a Glance / 8
Introduction to U4205A Use / 9
The U4205A 34-Channel 38-pin Single-Ended Mictor Probe / 10
This chapter describes features and specifications of U4205A 34-channel
single-ended Mictor probe.

8Keysight U4205A Direct Connect 34-Channel Mictor Probe
1 U4205A Overview
U4205A - At a Glance
The U4205A is a 34-channel single-ended Mictor probe which is
compatible with the 160-pin interface on logic analyzers including the
Keysight 16850-series portable logic analyzers and U4154A logic analysis
AXIe-based modules. For more information on Keysight logic analyzers,
refer to http://www.keysight.com/find/logicanalyzer. For more
information on your specific analyzer, refer to the Online help.
The U4205A 34-channel 38-pin Single-ended Mictor Probe:
• Compatible with the 16850 Series and U4154A
• Compatible with boards designed for Keysight E5346A
38-pinprobe
• 34 Channels
• State speeds up to 600 Mb/s
• 300 mV peak-to-peak sensitivity
• 38-pin MICTOR connector
• Requires AMP MICTOR 38 connector and Keysight support
shroud
see page 32
Figure 1 E5386A half channel adapter

Keysight U4205A Direct Connect 34-Channel Mictor Probe 9
U4205A Overview 1
Introduction to U4205A Use
This chapter provides information to help you utilize the U4205A. Tables in
this chapter show you the number of probes required and the maximum
state speed supported depending
on which logic analyzer you have.
Another table shows the number of data and clock inputs for the various
operating modes of your logic analyzer.
Descriptions of U4205A direct connect probe
• U4205A Direct Connect 34-Channel 38-pin single-ended probe
Number of probes required
This table shows how many probes are required to provide connections to
all channels of your logic analyzer module.
Table 1 Number of probes required
Maximum state speed supported
This table gives you the maximum state speed that is
supported by the
combination of a probe and your logic analyzer module.
Table 2 Maximum state speed supported
Probe Logic Analyzer Module
U4154A 16851A 16852A 16853A 16854A
U4205A 38-pin single-ended probe 4 1 2 3 4
Probe Logic Analyzer Module
U4154A 16851A 16852A 16853A 16854A
U4205A 38-pin single-ended
probe
600 Mb/s 600 Mb/s

10 Keysight U4205A Direct Connect 34-Channel Mictor Probe
1 U4205A Overview
The U4205A 34-Channel 38-pin Single-Ended Mictor Probe
The U4205A is a direct connect, 34- channel, single- ended, 38- pin probe
designed to be compatible with the AMP MICTOR 38- pin connector. It is
pin- compatible with target systems that were designed for the Keysight
E5346A 38- pin probe, thus enabling you to use Keysight's latest logic
analyzers with target systems that were designed for older Keysight logic
analyzers. The U4205A is compatible with the Keysight 16851A,
16852A,16853A and 16854A portable logic analyzers, and the U4154A
logic analyzer module. It is capable of capturing state (synchronous) data
at clock speeds up to 600 MHz, at data rates up to 600 Mb/s, with signal
amplitudes as small as 300 mV peak- to- peak.
The Keysight E5346- 68701 or E5346- 68700 probing connector kit is
required for connecting the U4205A probe to your target system. The kit
contains five mating connectors and five support shrouds. The connectors
and shrouds may be ordered separately if desired. See the table on
page 32 for part numbers.
Figure 2 U4205A 38-pin single-ended probe
See Also: Chapter 2 for the mechanical information to design the connector
into your target system boards.

Keysight U4205A Direct Connect 34-Channel Mictor
Probe
User Guide
2Mechanical
Considerations
Characteristics / 12
Probe Dimensions / 13
MICTOR Connector Dimensions / 14
Support Shroud Dimensions / 15
Footprint Dimensions / 16
U4205A 38-pin single-ended probe pin out table / 17
This chapter describes mechanical considerations and dimensions of
U4205A 34-channel single-ended Mictor probe.

12 Keysight U4205A Direct Connect 34-Channel Mictor Probe
2 Mechanical Considerations
Characteristics
Electrical considerations such as equivalent probe loads, input impedance,
and time domain transmission are shown in chapters 3 and 4 of this manual.
Other characteristics are
dependent on the logic analyzer module you are
using.

Keysight U4205A Direct Connect 34-Channel Mictor Probe 13
Mechanical Considerations 2
Probe Dimensions
The following figure shows the dimensions of the 38-pin single-ended
probe.
Figure 3 U4205A 38-pin single-ended probe dimensions

14 Keysight U4205A Direct Connect 34-Channel Mictor Probe
2 Mechanical Considerations
MICTOR Connector Dimensions
The U4205A probe is compatible with target systems designed for the
Keysight E5346A 38-pin probe. This probe requires a probe kit that
contains MICTOR connectors and
shrouds. Refer to page 32 for the kit part
numbers.
Figure 4 MICTOR 38-pin connector dimensions

Keysight U4205A Direct Connect 34-Channel Mictor Probe 15
Mechanical Considerations 2
Support Shroud Dimensions
Support shrouds are not required but are recommended if pulling forces
may be applied to the cables that could cause the connector to be
dislodged. Refer to page 32 for the kit
part numbers.
Figure 5 Support shroud dimensions for the MICTOR 38-pin connector
Bottom View

16 Keysight U4205A Direct Connect 34-Channel Mictor Probe
2 Mechanical Considerations
Footprint Dimensions
Use the following 38-pin MICTOR connector footprint and support shroud
mounting hole dimensions to design your target system board.
Figure 6 38-pin MICTOR connector footprint and support shroud mounting hole
dimensions

Keysight U4205A Direct Connect 34-Channel Mictor Probe 17
Mechanical Considerations 2
U4205A 38-pin single-ended probe pin out table
The following table lists the signal, Mictor pin number and the channel
values of the U4205A 38-pin single-ended probe.
Table 3 U4205A 38-pin single-ended probe pin out table
U4205A
Single-ended
Probe
Logic Analyzer U4205A Single-ended
Probe
Logic Analyzer
Signal
Name
Mictor
Pin
Channel Pod Signal
Name
Mictor
Pin
Channel Pod
Clk 5 Clk Which
ever pod is
connected
to “Even”
on the
U4205A
probe
Clk 6 Clk Whichever
pod is
connected
to “Odd”
on the
U4205A
probe
D 15 7
12
D 15 8
15
D 14 9 14 D 14 10 14
D 13 11 13 D 13 12 13
D 12 13 12 D 12 14 12
D 11 15 11 D 11 16 11
D 10 17 10 D 10 18 10
D 9 19 9 D 9 20 9
D 8 21 8 D 8 22 8
D 7 23 7 D 7 24 7
D 6 25 6 D 6 26 6
D 5 27 5 D 5 28 5
D 4 29 4 D 4 30 4
D 3 31 3 D 3 32 3
D 2 33 2 D 2 34 2
D 1 35 1 D 1 36 1
D 0 37 1 D 0 38 1
Ground 39-43 Ground 39-43

18 Keysight U4205A Direct Connect 34-Channel Mictor Probe
2 Mechanical Considerations
NOTE
Do not connect the following pins. These pins are +5 volt supply and DC return
for analysis probes.
+5 V dc 1
Ground 3
Do not connect the following pins. They are used by the Keysight logic analyzer
with an emulator or analysis probe to program or read target information.
SCL 2
SDA 4

Keysight U4205A Direct Connect 34-channel Mictor
Probe
User Guide
3Operating U4205A
Probe
Equivalent Probe Load / 20
This chapter describes load specifications for operating U4205A
34-channel single-ended Mictor probe.

20 Keysight U4205A Direct Connect 34-Channel Mictor Probe
3 Operating U4205A Probe
Equivalent Probe Load
The equivalent probe load for the U4205A probe is shown in the figure
below. It includes the 38- pin MICTOR connector and the target connector.
The model is accurate up to 1 GHz.
Figure 7 Equivalent load for U4205A