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Logic Analyzer Probing Solutions

Logic Analyzer Probing Solutions

Product catalog summary

Overview: The document provides a comprehensive guide to Keysight Technologies' probing solutions for logic analyzers, emphasizing their high-quality and diverse range of options to meet various measurement needs. It highlights the importance of reliable connections, high-density performance, and general-purpose probing solutions.

Probing for Memory System Validation: Keysight offers a variety of Ball Grid Array (BGA) interposers for memory system validation, allowing for signal quality and protocol measurements with minimal system impact. The document lists specific models for DDR2, DDR3, DDR4, and LPDDR2/3/4 memory types, along with their corresponding publication numbers for further reference.

Reliable Connections Ensure Accuracy: The document outlines key factors for ensuring accurate measurements, including high input impedance to minimize circuit intrusion, robust mechanical design for reliable connections, and high immunity to electromagnetic noise. It also discusses the importance of matching probe accessories to the system's clock speed to maintain signal integrity.

Which Logic Analyzer? Guidance is provided on selecting the appropriate probes based on the logic analyzer's connector type, whether it is a 160-pin front panel connector, a 40-pin pod connector, or a 90-pin pod connector. Specific models compatible with each type are listed.

Probe Selection Guide: Detailed tables offer a selection guide for various Keysight logic analyzers, including compatibility with different models, supported signal types, maximum data rates, and connection requirements. The guide covers soft touch connectorless probes, Samtec and Mictor probes, and general-purpose flying lead sets, providing specifications such as input capacitance and minimum signal amplitude.

Conclusion: The document serves as a technical resource for selecting and implementing the appropriate probing solutions for Keysight logic analyzers, ensuring accurate and reliable measurements across a range of applications.

Probe Models: The document provides detailed information on various probe models and their specifications, advantages, and configurations. Models include E5339A Low Voltage Mictor Probe, E5351A Unterminated Mictor Probe, E5382B Single-Ended Flying Lead Probe, E5381B Differential Flying-Lead Probe, E5405B Differential Pro Series Soft Touch Connectorless Probe, E5406A/E5402A Pro Series Soft Touch Connectorless Probes, E5398A Half-Size Soft Touch Connectorless Probe, and E5390A Single-Ended Soft Touch Connectorless Probe.

Probing Strategies: The document discusses different probing strategies such as connectorless probing, connector probing, and flying leads, each with its own advantages and considerations.

Configurations and Characteristics: Various configurations are suggested for optimal performance, with specific capacitance and speed characteristics detailed for each probe type. Grounding is emphasized for high-speed performance, with specific accessories available for adapting to coaxial connectors.

Accessories: Includes probe pin kits, high-frequency probing kits, grabber clip kits, ground extender kits, and right-angle ground lead kits.

Recommendations: For best performance, use recommended configurations and ensure proper grounding of probe tips. Consider the specific needs of your target system when selecting a probing strategy, balancing cost, performance, and design requirements.

Probe Models and Dimensions: The document outlines the dimensions and configurations for several probe models, including E5405B, E5406A, E5402A, E5412A, E5390A, E5398A, E5387A, and E5378A. Each model is described with its specific dimensions, side and top views, and the corresponding retention module dimensions.

Retention Modules: The retention modules are crucial for maintaining pin-to-pad alignment and securing the probes on the PC board. The document specifies the dimensions and installation guidelines for these modules, emphasizing the importance of proper soldering and alignment.

Footprint and Pinout Information: Detailed footprint dimensions are provided for designing PC board pads and holes compatible with the retention modules. The document also includes pinout tables for each probe model, indicating the signal names, pad numbers, and channel assignments.

Probing Solutions: The document discusses the capabilities of different probing solutions, such as the E5378A 100-pin single-ended probe and the E5379A 100-pin differential probe, both capable of capturing data up to 1.5 Gbits/sec. It highlights the number of data inputs, clock inputs, and threshold reference inputs for each probe.

Equivalent Probe Loads: The document provides equivalent probe load models based on in-circuit measurements, detailing the components and values used to model the probe load accurately up to 6 GHz.

Design Recommendations: Key design recommendations include maintaining a solder mask web between pads, avoiding VIAs on pads, and using specific surface finishes like HASL, immersion silver, or gold over nickel. These guidelines ensure compatibility and optimal performance of the probing solutions.

General-Purpose Probing: General-purpose probing involves connecting probe leads to individual signal lines, suitable for a small to moderate number of signals. It requires a minimum of 600 mV supply to the probe with specified loading. The standard probing system includes IC clips, probe leads, housing, and cables, offering high input impedance and signal grounding at the probe tip.

Probe Lead Sets: Probe leads are organized into sets capable of probing 16 data channels, one clock channel, and a common ground. The E5383A 17-channel probe lead set is highlighted, with components such as signal leads, ground leads, and IC clips.

Grounding Methods: Three grounding methods are discussed: grounding the entire probe lead set, individually grounding each probe lead for optimal signal fidelity, and grounding every other or every fourth connection for moderate rise times.

Designing for Logic Analysis Probing: Recommendations for designing target systems with connectors include selecting appropriate technology, routing lines for debugging, and minimizing routing length to connectors. An isolation network is essential between the target and the logic analyzer.

Soft Touch Connectorless Probing: Keysight's soft touch connectorless probes eliminate traditional connectors, reducing probe load and streamlining design. The E5404A and E5394A probes are highlighted, offering features like a 30% smaller footprint, reliable contact, and compatibility with various board thicknesses.

Probe Dimensions and Retention Modules: Detailed dimensions and specifications for probes and retention modules are provided, ensuring proper design and alignment on target systems. The document includes figures illustrating probe dimensions and pad numbers for specific probes.

Probe Specifications: The document outlines the pin configurations for different probes such as the E5404/06A, E5394A, and E5396A. Each probe's pinout is detailed, showing the signal name, pad number, and channel pod connections. The E5394A and E5396A are single-ended soft touch probes with specific pad numbers and logic analyzer pod inputs.

Probe Load Models: The document describes equivalent probe load models based on in-circuit measurements. It includes both simple and complex models, detailing components like resistors, capacitors, and inductors that affect the probe's performance up to 6 GHz.

High-Density Probing Solutions: Keysight offers high-density probing solutions using Samtec and AMP Mictor connectors. These solutions are designed to minimize board space while providing efficient signal routing to the logic analyzer. The document provides mechanical dimensions and design guidelines for these connectors.

Design Guidelines: For high-speed applications, the document advises on calculating the electrical length of probe hookup stubs and ensuring propagation delays are within acceptable limits. It provides specific guidelines for using the E5346A, E5339A, and E5385A probes, including recommendations for connector design and signal line impedance.

On-Board Terminations: The document discusses options for on-board terminations, including using surface mount isolation networks or discrete components. It emphasizes the importance of minimizing stub lengths and ensuring consistent signal line lengths to avoid propagation delay variations.

Support Shrouds: The use of support shrouds is recommended to provide strain relief between the probe and connector. The document lists part numbers for shrouds and connector kits compatible with various PC board thicknesses.

Right-Angle Adapter: The E5346-63201 right-angle adapter is designed for use with 38-pin connectors. It allows the adapter cable to connect parallel to the target board surface. However, it adds significant capacitance and inductance, making it unsuitable for state speeds above 100 MHz or signals with rise times less than 4 to 5 ns. Support shrouds cannot be used with this adapter.

Isolation Adapter: The Keysight 01650-63203 isolation adapter reduces the number of pins required on the target board from 40 to 20, saving board space. It also provides proper RC networks. The adapter impacts signal fidelity, especially for faster transition times.

Connector Specifications: The document lists various 20-pin and 40-pin connectors, including their Keysight and 3M part numbers. These connectors are used for fixed configuration probing and require isolation networks installed on the target board.

Custom Probing: Direct connection through 40-pin connectors is possible, but proper isolation networks must be installed on the target system board. Discrete components can be used to design these networks, with recommendations for minimizing trace lengths and designing transmission lines for specific impedance ranges.

Additional Information: The document includes contact information for related companies and additional resources for further reading on logic analyzers and probing solutions.

Catalog excerpts

Data Sheet Bring the full power of your Keysight Technologies, Inc. logic analyzer to your project with high quality probing solutions - Wide range of solutions to meet your measurement needs - Soft Touch Connectorless probing - High-density, high-performance probing solutions - General-purpose probing

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02 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet U4206A Probe, 34 Channel, Soft Touch Pro, Single-Ended, U4207A Probe, Zero Q, 34 Channel, Soft Touch Pro, Single-Ended,

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03 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Keysight Technologies, Inc. has the measurement tools you need to validate the very latest memory technologies. These include logic analyzers, oscilloscopes and software for automated compliance, decode, and protocol checking. To complement our high speed digital instruments and software, Keysight offers probing solutions with a comprehensive range of Ball Grid Array (BGA) interposers. When positioned between the processor memory controller and the memory device, the interposers allow you to make signal quality or protocol measurements...

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04 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Signal frequency content drives probing solutions Faster clock rates demand tighter timing tolerances, such as setup and hold specifications. Systems with faster clock rates usually have shorter rise and fall times. Signals with shorter transition times have more high frequency content and are more susceptible to high frequency analog problems such as cross talk, reflections, ground bounce, noise and emissions. Susceptibility of a system to analog problems relates to the transition times of the signals, not the clock rate. A system...

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05 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Note: U4201A logic analyzer cable(s) are required when using 90-pin probes with the U4164A, U4154A/B or 16850A Series logic analyzers. Soft touch connectorless probes AH soft touch probes are supplied with 5 retention modules Application_Quick connection to many channels in a small footprint without a header designed into the target Supported signal Differential or single-ended clock single-ended data types Maximum data rate 4 Gb/s 4 Gb/s 4 Gb/s Connection to Requires half-size soft touch Requires Pro Series soft touch Requires...

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06 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Note: U4201A logic analyzer cable(s) are required when using 90-pin probes with the U4164A, U4154A/B or 16850A Series logic analyzers. Samtec probes Additional See Table 4 page 34 for shrouds and pc board connectors See Table 1 (page 10) See Figure 4.4 (page 13) Application_Quick connection to many channels in a small footprint_Flexible connection to many signals Supported signal Differential or Differential or Single-ended clock Differential or Differential or singletypes single-ended clock single- single-ended clock single-ended...

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07 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Direct connect probes connect directly to the DUT and the 160-pin front panel connector of the compatible logic analyzers listed below. Model number Application Supported signal types Maximum data rate Minimum signal amplitude Connection to target system Input capacitance Additional supplies Soft touch connectorless probesU4206A (see note above) U4204A Quick connection to many channels in a small footprint without a header designed into the target system 34 34 Differential or single-ended Differential or single-ended clock, single-ended...

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08 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Compatible with Keysight models 16910A/11A, 16800 Series, 16750/51/52A/B, 1674X Series, 1671x Series, 165xx Series modules, 1690 Series, 1680 Series, 1670 Series, 1660 Series, 1650 Series, and E9340 logic analyzers. Soft touch connectorless probes Supplied with five retention modules Model number E5396A E5404A E5394A Application Quick connection to many channels in a small footprint without a header designed into the target system channels 16 data, 1 clock 32 data, 2 clock 32 data, 2 clock Supported signal All probes: single-ended...

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09 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Selecting the Optimum Probing Strategy What is the best way to probe your signals, given their unique characteristics? Available probing options for all Keysight logic analyzers Connection to the target system Requires appropriate pro series soft touch or original soft touch footprint designed into the target system. Retention module is used for alignment and mechanical retention only. - Reduces cost and shortens the design cycle by eliminating a connector - Eliminates the capacitive loading of a connector, which gives you the...

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10 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Available probing options for all Keysight logic analyzers Connector Mictor Connection to the target system Advantages Requires 38-pin Mictor connector designed into the target Connects to individual, widely dispersed signals at IC pins, system_traces, pads, vias - Reliable and cost-effective solution for lower data rates - High-performance accessories are based on award (600 Mb/s) winning, InfiniiMax scope probes - Supports single-ended signaling - Compatible with a wide variety of accessories to connect - 3.0 pF capacitive loading...

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11 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Probing Solutions for 90-pin Logic Analyzers General-Purpose Probing E5382B single-ended flying lead probe set The E5382B is a 17-channel single-ended flying lead probe compatible with logic analyzers with a 90-pin pod connection. It is capable of acquiring data at the maximum rates of the logic analyzer it is connected to. The E5382B is useful for acquiring signals from dispersed locations or when a mass connection scheme is not available. The E5382B has the following: – 16 single-ended data inputs – One differential or single-ended...

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12 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet Probing Solutions for 90-pin Logic Analyzers General-Purpose Probing (Continued) Suggested configurations and characteristics Table 2. E5382B suggested configurations and characteristics Configuration Description 130 Ω resistive signal pin (orange) and solder-down ground lead Total lumped input C Maximum recommended state speed 1.3 pF 1.5 Gb/s 5 cm resistive signal lead (can be soldereddown) and solder-down ground lead Flying lead and ground extender Grabber clip and right-angle 2.0 pf ground lead

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Logic Analyzer Probing Solutions

Logic Analyzer Probing Solutions

Catalog excerpts

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