In-System Programming | MultiWriter High-Speed ISP

High-Speed ISP for Production

MultiWriter™ is a High-Speed In-System Programming Platform Demanding PCB Production Lines. Its Unique In-Fixture Buffer Card Design Provides the Signal Integrity Needed for the Fastest Programming Speeds, While Supporting Parallel Programming Across Multiple DUTs and Full Panels. Each Project is Developed and Tested on the Customer’s Actual Board and Delivered Ready for Production.

Program up to 384 Devices in Parallel
Supports up to 16 Different Device Types Simultaneously
Each Project is Qualified on the Customer’s PCBA Before Release

Advanced In-System Programming Architecture

MultiWriter’s In-Fixture Active Buffer Architecture Eliminates Noise and Enables High-Speed, Reliable Communication with the Device Under Test. This Architecture Supports Advanced Programming Requirements Including Serialization, Encryption, Secure Data Handling, and Cybersecurity Applications That Require Secure Key Programming and Real-Time DUT Communication.

Stand-Alone or

Integrated Deployment

Deploy MultiWriter™ as a Stand-Alone ISP System or Combine it With CheckSum’s ICT and Parallel Functional Test™ (PFT), Capabilities as Part of a Broader Parallel Test Strategy. This Flexibility Helps Manufacturers Reduce Bottlenecks, Support Demanding TAKT Times, and Integrate Programming, Cybersecurity, and Other Test Requirements into a More Efficient Production Process. MultiWriter™ is a Proven Production Platform with Billions of Devices Programmed on Over 4,000 Systems Deployed Globally.

Stand-Alone ISP or Integrated with ICT and PFT
Supports Advanced Programming and Cybersecurity Requirements
Proven on Thousands of Deployed Systems Worldwide

Proven Production Technology

4,000+ CheckSum Systems Deployed Worldwide
Billions of PCBs Tested in Production Environments
Trusted Across Global High-Volume Manufacturing Operations

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.

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.

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.

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.