Category Archives: Prognostics

Sentinel Power Webinar

Join us for the Sentinel Power webinar to find out more about how this product line can help you monitor your most critical power supply systems.

Sentinel Power WebinarPower supply systems may wear out and cause catastrophic failures in the systems they are designed to enable. Fortunately, even when a power supply system is still performing within nominal limits, it may exhibit tell-tale signs of degradation. Such degradation signatures are extracted and analyzed by Sentinel Power in order to provide advance warning of impending failure and actionable maintenance data.

Sentinel Power is a product line within the Sentinel Suite family of prognostic health management (PHM) and condition-based maintenance (CBM) solutions, and it promises to help reduce system disruption while also avoiding unnecessary maintenance events in numerous switch-mode power supply systems.

Webinar is scheduled for Wednesday August 12, 2020 at 10:00 AM PT (5:00 PM UTC).

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    Sentinel Motion Webinar July 2020

    Sentinel Motion is an IoT based sensor system that monitors mission critical equipment by observing any combination of temperature, linear, rotational or vibrational force. The advanced diagnostics and prognostics data output from this system is a critical component in any PHM or CBM platform.

    This proprietary combination of smart sensors, reasoners, and display software provide fault signature detection in a number of industrial operating environments with rotating shafts, gearbox systems, and other electromechanical systems in the Aerospace, Energy, and Rail/Transportation sectors.

    Join us for the Sentinel Motion Webinar to hear more about what this product can do in your application.

    Scroll down to sign up now for July 8, 2020 10am PDT.

    Sentinel Motion Stack


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      Prediction Estimates: Description, Evaluation, and Accuracy

      Learn how to increase prediction accuracy in Condition-Based Maintenance (CBM) and Condition-Based Data (CBD)

      The second in a series of exclusive presentations by James “Hoffy” Hofmeister.

      Improve the accuracy of your maintenance prediction information with this unique approach to prognostics.

      Algorithm-based Prognostic Health Monitoring (PHM) done the Ridgetop Group way, can improve the maintenance cycles on your applications from critical Aerospace systems, Lithium Ion battery systems, to Railroad car bearings.

      Sign up here and you will receive instructions to join the event.

      June 10, 2020 10am (GMT-7)

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        From Prognostics to Machine Learning

        Ridgetop Group specializes in combining sensors, test and measurement techniques with proprietary data analytics in systems for semiconductor test and qualification, and Hi-Rel applications estimating remaining useful life in avionics. This predictive modeling technique has become an industry standard known as Prognostics as well as our main focus at RGI for nearly two decades.

        At ITC 2017 Ridgetop Group will be demonstrating the Prochek family of parametric testers, a compact, flexible test platform for both conventional and rad-hard characterization, manufacturing test, incoming inspection test, or Spice model generation. Measuring real-time thresholds then analyzing with the proprietary algorithms of ProChek is the data analytics part of prognostics as well as a first step in machine learning. Our products use deterministic based models, and then use reasoners to predict semiconductor failure.

        ProChek Plus family unitProChek Plus™ is a flexible and dedicated semiconductor qualification and reliability characterization system that is an effective tool for both conventional and rad-hard characterization. This innovative low-cost parametric test system can rapidly characterize intrinsic process reliability and monitor process quality. Applications include failure and stress testing analysis, manufacturing test for popular I/F silicon equipment and temperature analysis using a test coupon.

        • High Resolution DC Parametric Measurements ( 1 pA or 1uV)
        • Up to 50X throughput test speed vs what is presently available
        • Handles Low Voltage and Low Currents for next generation nodes
        • Temperature Sense Measurements
        • Sweep Measurement Mode
        • Pulse, Frequency and Measurement Capability Plug in Modules Available
        • Popular High Speed Serial I/F for Control and Deterministic Data Reduction for Analytics and Prognostics
        • USB Data Backup
        • Standard output data formats
        • Up to 48 programmable SMUs
        • Lowest Cost Portable Lab Instrument
        • FVMI and FVFCMI Operation

        Read more about the Procheck family of products. Or stop by our booth to see the Procheck tester in action and hear more about what Ridgetop Group products can do for your test and characterization process, such as:

        SJ BISTTM for Interconnect Fault Detection:

        SJBIST_InterconnectSJ BIST is an effective tool to detect faulty solder joints in 2.5D IC packages, die-crack detection and cabling.  Proven over years of applications in harsh environments, SJ BIST offers a unique method of providing fault isolation.

        SJ BIST can be used to enhance test equipment and test procedures serving initial board, cable and system qualifications but also servers to monitor systems and cables throughout their usage time. SJ BIST enables early detection and identification of a device or assembly likely to experience a malfunction. To do so, the prognostic needs have to be programmed/designed-in into the host subject to life-time monitoring and uses dedicated interconnects/paths that are continuously monitored and serve as canaries. Serving this purpose, the SJ BIST function is made available as a synthesizable core expressed in Hardware Definition Languages (HDLs) such as Verilog or VHDL, serving a quick and easy implementation inside any programmable or hard-coded IC.

        NightHawk: No Fault Found Software ToolkitTM:

        NightHawk_blockUsing a set of advanced anomaly detection algorithms, NightHawk provides an interactive test development system that will reduce, or eliminate, no fault founds (NFFs) on critical systems. This new application provides enhancements to test program set (TPS) code to detect soft faults on ‘Bad Actor’ Circuit Card Assemblies (CCAs) and other test articles, which remain difficult to isolate using conventional TPS methods.

        NightHawk offers the ability to minimize maintenance time by quickly identifying the root cause of difficult-to-find faults in CAAs and modules. This capability does not exist with conventional suppliers, making Ridgetop’s approach at leveraging its background in advanced anomaly detection algorithms to be the leading choice in next generation NFF isolation and diagnosis. Take the opportunity at ITC 2017 to learn about the NightHawk capabilities and how our advanced algorithmic methodologies can reduce lifetime costs that traditional TPS are unable. In addition, visit our website and learn more about NightHawk.


        This handheld short and disconnect identifier is a fast, reliable, high performance cable and power system tester. As the integrity of power transmission through main terminals, cables and power supplies is crucial in power systems, this tool effectively tests and isolates faults in power supplies and cabling. Originally developed for use in unique aircraft applications, the portable handheld CPT1000 device provides signal monitoring, cable testing, and stimulus-and-response testing. The CPT1000 has two 37-pin cable ports for testing different types of power supplies and cables, and uses a rechargeable battery for portability. Witness the versatility of the CPT1000 at booth 219 where our VP of Worldwide Operations, Craig Wentzel, and Chief Technology Officer, Dr. Hans Manhaeve, will be demonstrating CPT1000. And if you are unable to visit us in person, make sure to come to our product page, where you can learn more about CPT1000 as well all of our other advanced diagnostic and prognostic solutions.


        Ridgetop Group’s team of senior researchers have a rich technical range of experience from theoretical approaches in numerical methods, linear and non-linear system dynamics, multi-objective analysis to applied techniques in IDDQ/IDDT monitors and quiescent and transient supply current measurement, such as:

        Q-Star TestTM:

        Q-Star_picRidgetop Europe’s Q-Star Test static/quiescent current measurement instruments (also referred to as Iddq or Issq modules) serve a wide range of current measurement applications such as: Standard and advanced Iddq and/or Issq tests; standby current measurements; power-down current measurements; bias current measurements; average current measurements; analog DC and low frequency current measurements. In addition, Ridgetop Europe’s Q-Star Test dynamic current measurement instruments (also referred to as Iddt modules) serve a wide range of active current measurement applications, including: Dynamic and transient (Iddt) current tests; power profiling of circuits and systems; active current consumption; and e-fuse programming validation.

        Ridgetop Group offers a range of tools for semiconductor test and characterization in addition to the ProCheck family of parametric testers, including Q-Star Test™ Current Measurement, Sentinel Silicon Prognostic Cells, the InstaCell IP Library of Analog/Mixed Signal design blocks and the SJ BIST™ Interconnect Monitors. This is what we call the “Five-level Model Progression of Prognostic Solutions” from die level to system level. We provide consulting services, training services and product solutions for semiconductor, transportation, energy and aerospace applications.

        Ridgetop Group is the leader of advanced prognostic and diagnostic sensoring capabilities and continues to find the top by and see us at booth 219.


        See us at AutoTestCon 2017

        Come visit Ridgetop Group at the 2017 AutoTestCon being held at the Renaissance Schaumburg Convention Center Hotel in Schaumburg, Illinois from September 11-14, 2017.

        This year, our esteemed Senior Researcher, Dr. Ferenc Szidarovszky, will be presenting his paper “A New Method to Estimate Expected Number of Failures for Allocating Spare Parts and Labor”. Dr. Szidarovszky will explain how, in determining the optimal allocation of spare parts and labor in a machine shop, that in addition to planned inspections, the random failures must be considered as well. He will discuss the mathematical model in which partial repairs are considered, when at each repair the effective age decreases by a given percentage, and take into account the time it takes to perform repairs.

        Senior Vice President of Worldwide Business Operations, Craig Wentzel, will be discussing the benefits of CPT-1000 and NightHawk. He is a 30-year veteran of both the Electronic Design Automation (EDA) and the electronics Test and Measurement (T&M) industries, along with holding additional financial interests in an aortic valve start-up as well as a LTE systems provider. He also maintains continued experience in the fields of cyber security, supply chain integrity software, and other angel activities pertaining to the internet.
        One of the company’s leading system engineers, Wyatt Pena, will also be available to demonstrate the CPT-1000 unit and NightHawk.

        Dr. Ferenc Szidarovszky has been a senior researcher with the Ridgetop Group Inc. since 2015, working on theoretical issues concerning reliability, robustness, optimal maintenance and replacement policies and prognostics in complex systems. He has earned two PhD degrees, one in Applied Mathematics and another in Economics in Hungary. The Hungarian
        Academy of Sciences has awarded him with two higher degrees, Candidate in Mathematics and Doctor of Engineering Sciences. In 1987 he moved to the US and from 1988 he was a professor of the Systems and Industrial Engineering Department of the University of Arizona. He is the author of 22 books and over 375 articles in international journals in addition to numerous conference presentations and short courses taught in many countries.

        Solution For Fault Isolation That Improves Mean-Time-to-Repair

        CPT1000 Cable Power Test System

        CPT1000 Cable Power Test System

        Ridgetop Group’s CPT1000 is a new, hand-held, fault isolation tool that reduces Mean-Time-to-Repair (MTTR) by 20% from pinpointing the specific electronic modules in an interconnected cluster that prove to be defective. Rapid maintenance and repair of electronic modules in the F/A-18 are crucial to mission success and current test methods do not support testing at the O-Level. Initially created at NAVAIR Lakehurst by Russell Shannon, PhD, this tool concept and prototype IP was licensed to Ridgetop Group, Inc. for further development and feature augmentation, including intermittency detection and cable FDR (Frequency Domain Reflectometry).

        Enhanced Readiness Improvement for Aged Systems

        The CPT1000 unit is an innovative, rapidly deployable maintenance tool that provides failure detection and isolation solutions that reduce repair and life cycle costs of fleet Aircraft. Aged electronic subsystems, some still being used past program service life, face degradation due to harsh environmental impacts such as lightning strikes, extreme temperatures and other adverse conditions that have degraded modules to become “off nominal”. Unfortunately, current conventional test stands are unable to pinpoint the specific Weapons Replaceable Assemblies (WRA).  The avionics bay of an aircraft will have an array of modules that must work together to be in operational condition.  Sometimes the source of the fault can only isolated to several circuit boards in the bay.  However with the CPT1000, higher resolution fault location is available. The CPT1000 is anticipated to reduce Mean-time-to-Repair (MTTR) of electronic sub-systems in the F/A-18 by 20%, saving costs, improving reliability and supporting operational readiness and “speed to the fleet”.
        The CPT1000 provides readiness for faster delivery to achieve mission success. The proven history behind our hand-held service tool is evidenced through its concept inception at NAVAIR – Lakehurst, where it was designed and tested to isolate faults in F/A-18 electronic subsystem modules.

        CPT-1000: Features, Benefits and Comments

        Feature Benefit Comments
        Power Fault Isolation Augments existing test methods to overcome fault ambiguity and provide specific location of faults. Uses power test analysis protocols.
        Intermittency Detection Often service personnel are plagued by intermittencies at the board or module level caused by interconnection connector problems or cracked solder joints. Ridgetop will embody its patented SJ BIST technology into the CPT1000.
        Identification of  Cable Faults Using advanced Frequency Domain Reflectometry (FDR) methods,  the CPT1000 can find faults within shielded cables, using a single-node Vector Network Analyzer (VNA) to use reflection as a means of detecting impedance mismatches caused by crimping, crushing an breaks in wires. First developed by Tektronix, Time Domain Reflectometry (TDR) has been proven over the years as a reliable tool for locating crimped or broken conductors within cables, but is deficient compared to FDR, which is less complicated to understand operationally and less expensive for long term sustainment activities..
        Low Power and long life Disposable light weight battery provides ample power for the instrument. Low power allows instrument to perform its functions, and self-powers down if not being used.
        Hand-held configuration Allows instrument to be used on the flight line or anywhere in the hangar. Weight is approximately 1.5 pounds.

        Height— 1.5 Inches (3.81cm)

        Length— 7.5 Inches (19.05cm)

        Width—   6 Inches (15.24cm)