--- title: In-Circuit Test Systems | Multi-Core ICT for PCB Production | CheckSum description: CheckSum in-circuit test systems deliver multi-core ICT for high-speed PCB production with scalable throughput and integrated verification. image: https://www.checksum.com/hubfs/Featured%20Image%20ICT.png --- [Skip to the main content.](https://www.checksum.com/in-circuit-test-systems#main-content) [![CheckSum Logo + Checkmark White Transp](https://www.checksum.com/hs-fs/hubfs/CheckSum%20Logo%20+%20Checkmark%20White%20Transp.png?width=1920&height=212&name=CheckSum%20Logo%20+%20Checkmark%20White%20Transp.png "CheckSum Logo + Checkmark White Transp")](https://checksum.com?hsLang=en) [![](https://www.checksum.com/hs-fs/hubfs/CheckSum%20with%20Check%20mark%20-Black%20-662x111px.png?width=588&height=164&name=CheckSum%20with%20Check%20mark%20-Black%20-662x111px.png)](https://checksum.com?hsLang=en) - [Solutions](https://www.checksum.com) - [ILS-X2 Dual Panel Automated Test System](https://www.checksum.com/ils-x2-dual-panel-automated-test-system) - 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[Solutions](https://www.checksum.com) - [ILS-X2 Dual Panel Automated Test System](https://www.checksum.com/ils-x2-dual-panel-automated-test-system) - [12KN Off-Line Test System](https://www.checksum.com/12kn-off-line-test-system) - [ICT - In Circuit Test](https://www.checksum.com/in-circuit-test-systems) - [ISP - MultiWriter™](https://www.checksum.com/in-system-programming) - [PFT - Parallel Functional Test](https://www.checksum.com/parallel-functional-test) - [Fixturing Solutions](https://www.checksum.com/fixturing-solutions) - [The Parallel Advantage](https://www.checksum.com/parallel-test-advantage) - [Resources](https://www.checksum.com) - [Software Updates](https://www.checksum.com/software-updates) - [Terms and Conditions](https://www.checksum.com/terms-and-conditions) - [Privacy Policy](https://www.checksum.com/privacy-policy) - [End User License Agreement](https://www.checksum.com/end-user-license-agreement) - [Contact Us](https://www.checksum.com) - [Contact 1-Call™ Support](https://www.checksum.com/contact-1-call-support) - [Contact Sales](https://www.checksum.com/contact-sales) - [Our Company](https://www.checksum.com/about-checksum) - [About Us](https://www.checksum.com/about-checksum) - [News and Trade Events](https://www.checksum.com/news-and-events) - [Careers](https://www.checksum.com/careers) --- ## Scale Your ICT Output ### Multi-Core In-Circuit Test for High-Speed PCB Production Lines ### Flexible, High-Coverage In-Circuit Test in One Station **CheckSum ICT delivers fast electrical verification across panelized boards using multi-core in-circuit test architecture.**  Multiple ICT cores operate simultaneously to keep pace with modern SMT production, while maintaining comprehensive component-level test coverage. **Key Points:** - Scalable Throughput With S**ingle, Dual, or Quad ICT Cores** - **Parallel Testing of Multiple Boards** When Production Volume Requires it - **Integrated ICT**, P**rogramming**, and **Functional Verification** Within One Architecture ![ICT Icon B](https://www.checksum.com/hs-fs/hubfs/ICT%20Icon%20B.png?width=600&height=600&name=ICT%20Icon%20B.png) ### Modular Multi-Core In-Circuit Test Architecture CheckSum ICT delivers fast electrical verification across panelized boards using multi-core in-circuit test architecture. ****Systems can be configured with one, two, or four ICT cores****, allowing manufacturers to scale electrical verification capacity while maintaining consistent test coverage.  ![Single Dual Quad-Core ICT Image-1](https://www.checksum.com/hs-fs/hubfs/Single%20Dual%20Quad-Core%20ICT%20Image-1.png?width=3615&height=1677&name=Single%20Dual%20Quad-Core%20ICT%20Image-1.png) - Comprehensive Component-Level Verification   - **Resistance, Capacitance,** and **Inductance** Measurement - **Diodes** and **LEDs** - **Bipolar Transistors, MOSFETs, SCRs,** and **TRIACs** - **Opto-Couplers** and **Transformers** - **Relays, Shorts, and Opens** Detection - **TestJet™** Vectorless Test Technology - Power-On and Functional Verification   CheckSum supports full powered-on in-circuit verification using the same electrical access established through the ICT fixture. Typical capabilities include: - **Voltage** and **Current** Measurements - **Frequency** and **Timing** measurements - **AC** and **DC** stimulus - **Digital Signal** Verification - Communication Bus Testing Such as **CAN**, **I²C**, **LIN**, and **SPI** These capabilities allow manufacturers to validate circuit behavior immediately after component-level verification. - Advanced Test Integration   CheckSum ICT platforms support integration of additional test capabilities within the same production architecture. Capabilities include: - **MultiWriter™ In-System Programming** Integration - **Boundary Scan** Integration - Built-In **Self-Test** Verification - Fixture-Level **Parallel Functional Test (PFT)** Resources This flexible architecture allows CheckSum ICT to serve as the electrical foundation for broader production test strategies, including CheckSum’s parallel functional test (PFT). **These tools support many verification tasks traditionally performed at end-of-line testing,** Allowing manufacturers to increase test coverage earlier in the production process. ### Trusted Across High-Volume ### Electronics Manufacturing CheckSum ICT is used in demanding production environments where speed, reliability, and measurement accuracy are essential. Markets served: Automotive electronics, industrial electronics, medical electronics, consumer electronics, flexible circuits, and semiconductor package testing. Manufacturers choose CheckSum ICT for reliable hardware, strong measurement capability, scalable test speed, and software that helps control the production test process.   ![SMT Factory Lines](https://www.checksum.com/hs-fs/hubfs/SMT%20Factory%20Lines.png?width=1024&height=540&name=SMT%20Factory%20Lines.png) ### Engineered for High-Volume ### Production Performance CheckSum ICT is built on production-proven architecture refined through years of real factory use. It is designed for the practical demands of electronics manufacturing, **delivering repeatable test performance, scalable throughput,** and **dependable operation** in environments where uptime, coverage, and process consistency matter.  - **4,000+ CheckSum Systems Deployed Worldwide** - **Billions of PCBs Tested in Production Environments** - **Proven in High-Volume manufacturing Where Reliability and Uptime Matter.** - **Scalable Architecture that Supports Growing Throughput Demands Without Changing Platforms** ![ILS-X2 12kN Group Transp](https://www.checksum.com/hs-fs/hubfs/ILS-X2%2012kN%20Group%20Transp.png?width=600&height=338&name=ILS-X2%2012kN%20Group%20Transp.png) ## CheckSum's Unique Suite of Four Parallel Test Technologies ![ICT Icon B](https://www.checksum.com/hs-fs/hubfs/ICT%20Icon%20B.png?width=800&height=800&name=ICT%20Icon%20B.png)   - **Multi-Core:** **1 / 2 / 4** boards in parallel per cycle. - **High-speed:** solid-state relays for fastest execution. - **Full coverage:** analog + digital + powered-on **(advanced tests)**. Faster test drives more value, enabling ISP + PFT in one test cell. [![\Learn More\](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-335494595305.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLKn33Sue%2Fnbb526j6yMHra9B9SMns8rIJhNcsKd2MILwgEDBnUhqR16IoLb3JK58Mwg4qbU%2BIPgELBl%2BLAA%2FyFbmnIe2IAGgxDYsWxmTUDeEU0r%2BfqttBjlpj1D2RnnA4sFEsiig9DScgVcoNaCDoAYOMhG6WP6OWJQRgBab4kP0Q34EjJs2RRAKlNzWC6oQCvmVsnKlzbukaL7Z5OpZHM%3D&webInteractiveContentId=335494595305&portalId=47306464&hsLang=en) ![MultiWriter Icon](https://www.checksum.com/hs-fs/hubfs/MultiWriter%20Icon.png?width=800&height=800&name=MultiWriter%20Icon.png)   - **High-speed ISP:** programs at the speed of the device. - **Easy-to-use software:** job integrity, process control, and reporting. - **Security:** encryption + serialization for advanced cybersecurity. Turnkey and production-ready--engineered to integrate seamlessly with **ICT + PFT** in one test cell. [![Learn More](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-335535445691.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLIE8j%2FkCzsU1Vc5srwE4lAu%2BtRaZYJSf6yPbis5A1ZfKKIAFv0uI3eJnssqCECUzTcjIMnJ5Lrll%2FaWgfwnqvlTgsmeqOlXHLnZObkpJifgJG9dPXrp5sQMAKSOPjcy%2BcsKDubx9UR%2F89%2Fp0nSBuFmIZRE3fkLGBm0q0pCGgERd0A8YjoUnvrtHKF36tYXhn%2BeTi4BL2HI0Sr624XaPXtLwqIdtmZ0%2F4D1yR2qF8gCgn9QYXtW4hOFUjsnVc4dtIw%3D%3D&webInteractiveContentId=335535445691&portalId=47306464&hsLang=en)   ![PFT Icon](https://www.checksum.com/hs-fs/hubfs/PFT%20Icon.png?width=800&height=800&name=PFT%20Icon.png)   - **Parallel panel-level FT:** test the entire panel in parallel — **5–10× faster**. - **Project-by-project:** designed to your unique application and test spec. - **Scalable + modular:** seamless integration with CheckSum’s test software. High-speed panel-level functional testing enables more coverage early, reducing **EOL** load and scrap risk. [![Learn More](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-335494709992.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLJZc8Lzbk0o%2BqmezxPa0AGPfaEMi9J2p%2Bx8IEcwuCzccdya%2Bldcm1QnHdopA1uJ5nhbeu%2B2QOvHhnlfEDknouWHVn8EGfN%2FLgMRT5uzbGUtV2Pduszm3FtpzjCPC0y8vyLv3u%2BZ1fd7g%2FMwfqD5CPyYnYMm7%2B9fLZhdCcrYGlX0okSxrPnSDgFgS9tJJHJKkX8R9i8RTDGrNLQg85iU3JEIeFsPERpu1%2BSL2YDn3z1p6egGK1Bc&webInteractiveContentId=335494709992&portalId=47306464&hsLang=en) ![Test Systems Icon ILS-X2](https://www.checksum.com/hs-fs/hubfs/Test%20Systems%20Icon%20ILS-X2.png?width=800&height=800&name=Test%20Systems%20Icon%20ILS-X2.png)   - **Dual-panel automation:** high-speed, fully automated test handling with two stop positions. - **Dual-panel flexibility:** run **single**, **dual-panel parallel**, or **dual-panel sequential** test flows. - **One platform for Parallel Test:** supports CheckSum’s **ICT + MultiWriter + PFT**. Unique dual-panel handling doubles throughput, dramatically reducing total cost of test while enabling **enhanced test coverage earlier** in the process. [![Learn More](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-340728736493.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLI5%2BkYcVi6V2EiokwP1F%2FmOstGuM6w4y7WJywQLxsJKhC6TnxSZF0cBTdMJ76ithmVr8mM93UZXEbYdWdbUMxfZrpwmbLqxLqb%2F6yZyiJNlaQHBCxK2tI6545mbdAT%2BNClc9QevbvyKfvsNgx1t%2FJ8vi%2BgHR%2BqmpVri64zkVVjcXWCp9tZtAOh3s7YEIzJKKqqEFpBawwmlbai66IBYCb4qWdk%3D&webInteractiveContentId=340728736493&portalId=47306464&hsLang=en) ## ICT Product Sheet  Fill Out the Form to Download the PDF. ![Product Sheet Thumbnail ICT](https://www.checksum.com/hs-fs/hubfs/Product%20Sheet%20Thumbnail%20ICT.png?width=894&height=585&name=Product%20Sheet%20Thumbnail%20ICT.png) ### ICT PDF Download Form ![Engineers reviewing PCBA test analysis and throughput data](https://www.checksum.com/hs-fs/hubfs/Project%20Analysis%20PCB%20Discussion%20C-2.png?width=1101&height=720&name=Project%20Analysis%20PCB%20Discussion%20C-2.png) ## Free Test Analysis ### Learn How Parallel Test Changes the Math On Your Project   With CheckSum's **Free** **Test Analysis**, you get real test process insights -- on your application -- with no obligation. **What You Get:** ✅ Verified Cycle Time Improvements ✅ Throughput and Efficiency Projections ✅ ROI Projections Specific to your Application     [Request a Free Project Analysis](https://www.checksum.com/checksum-project-analysis-request?hsLang=en) ## Interested in Learning More? Click on the ICON #### [![ICT Icon B](https://www.checksum.com/hs-fs/hubfs/ICT%20Icon%20B.png?width=200&height=200&name=ICT%20Icon%20B.png)](https://www.checksum.com/in-circuit-test-systems) #### [![MultiWriter Icon](https://www.checksum.com/hs-fs/hubfs/MultiWriter%20Icon.png?width=200&height=200&name=MultiWriter%20Icon.png)](https://www.checksum.com/in-system-programming?hsLang=en) #### [![PFT Icon](https://www.checksum.com/hs-fs/hubfs/PFT%20Icon.png?width=200&height=200&name=PFT%20Icon.png)](https://www.checksum.com/parallel-functional-test?hsLang=en) #### [![Test Systems Icon ILS-X2](https://www.checksum.com/hs-fs/hubfs/Test%20Systems%20Icon%20ILS-X2.png?width=200&height=200&name=Test%20Systems%20Icon%20ILS-X2.png)](https://www.checksum.com/ils-x2-dual-panel-automated-test-system?hsLang=en) #### [![Test Systems Icon 12KN](https://www.checksum.com/hs-fs/hubfs/Test%20Systems%20Icon%2012KN.png?width=200&height=200&name=Test%20Systems%20Icon%2012KN.png)](https://www.checksum.com/12kn-off-line-test-system?hsLang=en) #### [![Test Fixture Icon](https://www.checksum.com/hs-fs/hubfs/Test%20Fixture%20Icon.png?width=200&height=200&name=Test%20Fixture%20Icon.png)](https://www.checksum.com/fixturing-solutions?hsLang=en) [![Checksum Logo + Checkmark Vector Solid transp](https://www.checksum.com/hubfs/Checksum%20Logo%20+%20Checkmark%20Vector%20Solid%20transp.png)](https://www.checksum.com?hsLang=en) © 2026 CheckSum All Rights Reserved [Linkedin](https://www.linkedin.com/company/checksum-llc)[YouTube](https://www.youtube.com/@checksum2327) **P +1.360.435.5510 ** **6108 188th St. NE** **Suite B800** **Arlington, WA** **98223** **![Footer Background B-1](https://www.checksum.com/hs-fs/hubfs/Footer%20Background%20B-1.png?width=1920&height=216&name=Footer%20Background%20B-1.png)** Return to top