Description
The XJTAG XJQuad Multiport JTAG Controller is a powerful and versatile 4-port test system designed to accelerate production testing for PCB manufacturers. By enabling concurrent or independent testing on up to four separate Units Under Test (UUTs), the XJQuad delivers unmatched flexibility and cost efficiency in high-volume environments.
High-Speed Multiport Testing
Each of the four ports supports up to four JTAG chains per UUT, allowing you to run XJTAG projects created by XJDeveloper across multiple boards simultaneously. This capability ensures greater throughput without compromising test quality, making it ideal for production lines where speed and reliability are critical.
Configurable and Flexible Operation
The XJQuad offers a fully configurable JTAG pin-out, simplifying the process of adapting cable assemblies to your PCB designs. Two independent programmable voltage supplies (from 1.1 V to 3.3 V in 0.1 V steps) ensure compatibility with a wide range of devices. Advanced signal skew control and adjustable termination enable optimal performance across different test setups.
Built-In Measurement Tools
Engineers benefit from the integrated voltmeter and frequency counter on all I/O pins. With voltage measurement up to 5 V and frequency input up to 200 MHz, the XJQuad provides precise diagnostics during testing. Visual indicators and a built-in test button further simplify operation.
Robust and User-Friendly Design
Powered via a 12 V supply and connected through high-speed USB 2.0, the XJQuad offers seamless integration into production environments. Its self-contained licensing model means you can install XJTAG software on multiple PCs, giving you the freedom to move your test system wherever it’s needed.
Parallel Testing for Maximum Efficiency
With the ability to test four boards simultaneously or hot-swap boards independently while others are still being tested, the XJQuad significantly reduces downtime. This flexibility helps manufacturers meet tight deadlines while maintaining the highest levels of product quality.
The XJTAG XJQuad Multiport JTAG Controller is the ultimate solution for PCB manufacturers who demand scalable, reliable, and high-speed testing in modern production lines.
Technical Specifications – XJQuad
| Feature | Specification |
| Ports | 4 independent JTAG ports |
| Supported TAP Chains | Up to 4 per UUT |
| Voltage Levels | 1.1 V to 3.3 V (0.1 V steps, two independent supplies) |
| JTAG Signal Tolerance | +5 V tolerant |
| Max TCK Frequency | 166 MHz |
| Voltmeter Range | 0 – 5 V (on all I/O pins) |
| Frequency Counter | 1 Hz – 200 MHz (on all I/O pins) |
| Measurement Periods | 1 ms, 10 ms, 100 ms, 1 s, 10 s |
| Interface | USB 2.0 high-speed |
| Pin-Out | Fully configurable to match PCB designs |
| Additional Features | Visual status indicators, test button, general-purpose I/O options |
| Power Supply | 12 V external supply (included) |
| System Requirements | Controller PC with USB 2.0; recommended 4 CPU cores |
| Licence | Self-contained, transferable across multiple PCs |
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