--- title: Parallel Functional Test for Panelized PCBAs | CheckSum description: CheckSum PFT delivers parallel functional test for panelized PCBAs, helping manufacturers reduce end-of-line burden and improve throughput. image: https://www.checksum.com/hubfs/Featured%20Image%20PFT.png --- [Skip to the main content.](https://www.checksum.com/parallel-functional-test#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) - [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) Search [![Contact Us](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-291003091642.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLIlxF2BPLQhmrCFGDMwEqOWRnbPdle9DhShieChlQF9oA8fQo2IXkUySesiTw4WoG8IfAdqZ%2F2k11v8lfpYQoge8xDX8IZGytx8cipOKu3dO71ae9pvt18CUas1rNXke8DorkWWmLC%2FkURhqO4MFKVif0ayxVSGDivuHaH9hHiGsiz08h9o7tkGVcb1otHWar6sY1dqMIhf8Vcm7iw%3D&webInteractiveContentId=291003091642&portalId=47306464&hsLang=en) Toggle Menu Search Toggle Menu [![Contact Us](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/47306464/interactive-291003091642.png)](https://www.checksum.com/hs/cta/wi/redirect?encryptedPayload=AVxigLIlxF2BPLQhmrCFGDMwEqOWRnbPdle9DhShieChlQF9oA8fQo2IXkUySesiTw4WoG8IfAdqZ%2F2k11v8lfpYQoge8xDX8IZGytx8cipOKu3dO71ae9pvt18CUas1rNXke8DorkWWmLC%2FkURhqO4MFKVif0ayxVSGDivuHaH9hHiGsiz08h9o7tkGVcb1otHWar6sY1dqMIhf8Vcm7iw%3D&webInteractiveContentId=291003091642&portalId=47306464&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) - [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 Functional Test Output ### Parallel functional test for panelized PCBAs   ### Product-Specific Functional Test ### for High-Speed Production CheckSum PFT brings parallel functional test earlier into the production process with product-specific test modules designed around the actual requirements of the board. Instead of pushing more load to end-of-line test, **PFT supports a parallel strategy that improves throughput, reduces handling, and helps maintain process visibility closer to SMT.** - **Product-Specific Functional Test Modules Built Around the Application** - **Parallel Test Strategy That Moves More Verification Earlier in the Process** - **Reduced End-of-Line Burden With Higher-Throughput Functional Test Architecture** ![PFT Icon](https://www.checksum.com/hs-fs/hubfs/PFT%20Icon.png?width=600&height=600&name=PFT%20Icon.png) ### Reduce the End-of-Line Burden Traditional functional test strategies often push verification to the end of the line, where test time, labor, and rework become more expensive and more disruptive. **CheckSum PFT changes that model by applying functional test in parallel and earlier in the process**, helping reduce bottlenecks while improving visibility into product quality. The result is a more efficient overall test flow with fewer downstream constraints, lower end-of-line burden, and earlier detection of functional problems before additional value is added. - **Functionally Test the Entire Panel in Parallel** - **Reduce Required End-of-Line Labor and Equipment** - **Improve Quality by Identifying Issues Earlier, Before They Become Bottlenecks** ![8-Up Before After Image-Mar-27-2026-02-21-11-1574-PM](https://www.checksum.com/hs-fs/hubfs/8-Up%20Before%20After%20Image-Mar-27-2026-02-21-11-1574-PM.png?width=1920&height=800&name=8-Up%20Before%20After%20Image-Mar-27-2026-02-21-11-1574-PM.png) ### Functional Test Modules ### Matched to the Application **PFT modules are selected to support the specific functional requirements of the product**, from power and measurement to communications, diagnostics, and product-specific verification.  This modular approach helps create a turnkey solution that fits the application while reducing cost and complexity in the production test process. Because the modules are selected around the actual product requirement, **PFT is not a one-size-fits-all functional test approach.**  It is a practical way to move meaningful test coverage earlier, reduce dependence on slower end-of-line strategies, and build a more efficient production test flow that supports throughput, quality, and lower total test cost. - **Product-Specific Module Strategy Aligned to the Real Test Requirement** - **Earlier Functional Coverage to Reduce End-of-Line Burden** - **Improved Throughput Through Parallel Test Architecture** - **Better Process Visibility with Earlier Fault Detection** - **Lower Overall Production Test Cost Through a More Efficient Test Flow**     ### Explore PFT Capabilities - Power and Measurement   - Supports voltage source and measure, current measurement, discharge, frequency, and multiple loads for each UUT. - Digital and Communications   - Supports digital I/O and simultaneous asynchronous communications using CAN, LIN, I2C, SPI, and other serial protocols. - Built-In Self-Test and Diagnostics - Supports triggering, monitoring, and evaluating the results of built-in self-test along with broader product-specific diagnostics. - Optical and Specialized Functions   - Supports optical source and optical measurement capabilities for applications that require them. - Product-Specific Module Strategy   - Each project is built around the test capability required by the customer specification, using the PFT modules needed for that product. ## 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=AVxigLIlpZGaouBd4MIIY6jNvnJN0u7%2BY9bUFJnKqkCMqFBt5W7OuyzUFpgNYm%2B%2FljGDXMuVqXHMyRhxw%2Bd06XexhzSSs2kwgw%2B6ngWJj2pbckrsknD1bZ1arEVTLHvixGCKzVAGI2vSo2piNRSTYbpLZf%2B0RwUi4XhaK17u2A6jr9k%2FU6qob1LWoY%2FB2fIfCCu8Bfc%2BkI85y3lzSIi8nQaP%2FRU7jLLUqSwJ9ZOL33%2B7864dV5Yoow%3D%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=AVxigLKODV7AKAiduBgrtirt31klx8FTLIEdgD%2FTKVGc4adGOV5RQTeF8PZrar%2Bs5ZQtnlxALCftq5Qm59z4lRsDdZ7bTP8C6f0U%2BSCUkehYkOsuQEJ9B30t8PM5%2BRpUZq%2FWy8%2FNSd0sPb2PvQgS0s3ILVw%2BAN9slWe7%2BgZKFhzPN33NietgwMowJoSH3FZt6AcKe50wT9U9YPx%2BmWlZGSavoqjOZhhG%2BuBpbQn0zzRdx5KiP70FBZ33DGJrAOF0VxThwxHkROpv1TOspgaA2PxTJVYPYObW&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=AVxigLI9gbK0dHS8x6%2BMc84pJfe1raaNot0RUSZDAqmp%2BFNlsgQzfUpThIC4oJqmmL%2Bj8uVR4ApFRjd62bmaL9Y1dBu%2Bnp1Pf9wg9jwXPKT4PyITtQDYVU6wXcYr%2B8uGTlIKxcElNnnGumav3U1dx6PWjCba8E7To8yJRMtDvtGmzXZtPCznMWVqI6qbIx5OgQvWgH%2F1cnVXxYHv9%2B9RMZcR%2FXqRY%2FF5Tnu4R0laeYQRNdkso88eEine0CWz9s0OqeSGkv9Hl1VZCat6cd0%3D&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=AVxigLKmPo1iylvqgpMR%2Bkn1WJRV32BlWGG%2BvkA6TbRGTCVhzNLPaqTq5K%2FJ5HDOZgCUM5GGwMAuXolze2A5nAjSEz%2BEywGz01upOoE6J41tzagoo2uLGp2BtH6J0aWGPSo%2BIybRea%2F01z3G6fRnzflfpaR%2BTaW24mdGwdv4AhpXQhTPBYEGBGNqvhaCsBt6CnGeX%2B5bXVraDJUzCbpedKxQl16n3j88%2FbHhb1qFP0ZAPuPNcak9A1vOog%3D%3D&webInteractiveContentId=340728736493&portalId=47306464&hsLang=en) ## PFT Product Sheet Fill Out the Form to Download the PDF. ![Product Sheet Thumbnail PFT-1](https://www.checksum.com/hs-fs/hubfs/Product%20Sheet%20Thumbnail%20PFT-1.png?width=894&height=585&name=Product%20Sheet%20Thumbnail%20PFT-1.png) ### PFT 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? 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