The X-GCU is Detection Technology's Gigabit Ethernet data acquisition and control board for next-generation digital X-ray detector arrays. It interfaces with the company's X-Card detector modules — each a 64-channel, dual-energy digital readout card — to form complete, scalable detector subsystems. The board handles all communication between the X-Cards and the host system, synchronizes acquisition timing, and performs real-time signal processing. Three variants cover applications from compact NDT systems to high-throughput security inspection lines.

How does the X-GCU scale across different detector configurations?

The X-GCU GT supports up to 80 X-Cards organized in 5 segments of 16 cards each, delivering up to 10,240 pixels at a minimum integration time of 100 µs — suited for high-throughput cargo and vehicle inspection. The X-GCU B and YS variants support 24 X-Cards (2 segments of 12) for up to 3,072 pixels at 1.27 ms minimum integration, targeting compact NDT and food inspection systems. Maximum cable length between the X-GCU and each X-Card is 3 meters. All variants operate from a 10.8–26.4 VDC supply and draw 3–4 W typical.

What on-board signal processing does it perform?

Real-time processing functions include offset and gain calibration per pixel, adaptive constant integration time control, pixel binning for increased signal-to-noise ratio at reduced resolution, line summing and averaging for throughput optimization, and pixel discontinuity correction to compensate for dead or noisy channels. System linearity exceeds 99% across the full dynamic range. A configurable line stamp function with external RS-485 triggers provides frame-level synchronization with conveyor encoders, X-ray source pulsing, and multi-view imaging systems.

What diagnostics and integration features are built in?

Remote-readable sensors include temperature, humidity, and voltage monitoring with status indicator LEDs. Built-in data test patterns support field diagnostics without an X-ray source. Firmware is field-upgradable via Gigabit Ethernet or an SFP fiber interface, with auto-recovery for Gigabit Ethernet connection drops. An SDK with demonstration software, control library, and sample source code supports Windows and Linux integration. Serial number readout provides full traceability across multi-unit deployments. EMC compliance includes 8 kV contact / 15 kV air ESD protection and 1–6 kV surge immunity.