How to Optimize Takt Time with Middle-of-Line Test

+ A90 MOL Tester

Optimize Takt Time in Automotive Printed Circuit Board Assembly Manufacturing Test

Modern automotive electronics combine more processors, memory, connectivity, and software on increasingly complex printed circuit board assembly (PCBAs). During production, growing firmware and operating-system payloads can extend programming time and create bottlenecks when handled within traditional in-circuit or functional test stations. Takt time defines the production pace needed to meet required output; when a test or programming operation takes longer, it can constrain the throughput of the entire line. This challenge becomes more pronounced as automotive products become increasingly software-defined and firmware payloads grow.

Middle-of-line (MOL) test provides an opportunity to optimize takt-time balance by moving time-intensive application programming into a dedicated in-line process. Offloading medium-to-large payload flashing from ICT allows each test stage to focus on the operations it performs most efficiently. A scalable MOL platform can add parallel programming capacity as throughput requirements increase, while efficient board handling and flexible line integration help maintain production flow. This approach helps manufacturers reduce programming bottlenecks, balance takt time across test stages, and maintain throughput as automotive electronics and software complexity increase.

A90 In-Line Application Test Solution

Meeting takt time requires more than making one test step faster; the complete MOL test flow must be balanced around the slowest operation. The Keysight A90 In-Line Application Test Suite provides a configurable platform for consolidating high-payload flashing, boundary scan, board functional test, and most end-of-line functions in a single automated in-line system. Parallel programming can scale to as many as 112 channels, while same-height bypass keeps boards moving when a process is not required. Side-by-side installation adds capacity without forcing a major line redesign. An accessible instrument bay supports PXI instrumentation and custom fixtures for application-specific functional test. The result is a reusable, redeployable platform that helps engineers balance workloads, reduce duplicate stations and handling, use floor space efficiently, and adapt test capacity as automotive programs and software payloads change.

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