Model Nomenclature

• PXI: PCI eXtensions for Instrumentation, adhering to modular instrumentation bus standards.

• 8336: MXI-4 series identifier; the suffix 6 denotes fiber-optic transmission (vs. 1 for copper in PXI-8331).

• MXI-4: Fourth-generation multi-system extension interface, a dedicated protocol for cross-chassis PCI bridging.

Technical Specifications

• Form Factor: 3U, single-slot PXI chassis occupancy.

• Bus Interface: Standard PCI backplane connection; compliant with PXI Rev 2.1 and PCI Rev 2.2.

• Protocol: MXI-4; serial data rate 1.5 Gbit/s.

• Bandwidth: Peak 132 MB/s; sustained 78 MB/s.

• Topologies: Daisy-chain and star; up to 254 cascaded links (BIOS-dependent).

• Fiber-Optic Cables: Multi-mode; lengths 10 m, 30 m, 200 m.

• Power: 5 V DC from PXI backplane; typical 1.4 A at 5 V, <0.34 A at 3.3 V.

• Environment: Operating temperature 0–55 °C; storage -20–70 °C; humidity 10–90% non-condensing; altitude up to 2,000 m.

• Weight: ~0.25 kg (0.55 lb).

Interface and Communication Configuration

• Front Panel Port: Dedicated MXI-4 fiber-optic connector for multi-mode cable connection.

• PCI-to-PCI Bridge: Hardware-based transparent bus bridging for seamless data transmission.

• Signal Forwarding: Transfers PXI trigger and RTSI synchronization signals across chassis for multi-device sync.

• Error Handling: MXI-4 protocol integrates CRC checking and automatic retransmission for reliability.

• LED Indicators: Real-time status for power, link, and data activity.

• Software: Requires NI-PXI drivers; compatible with LabVIEW Real-Time and NI-VISA.

Core Features

• Transparent Bus Extension: Remote PXI modules are enumerated and controlled as local hardware, no code changes needed.

• Fiber-Optic Advantages: Up to 200 m transmission, complete electrical isolation, superior EMI immunity for industrial environments.

• High Reliability: CRC and auto-retransmission ensure stable communication in noisy settings.

• System Scalability: Connect PCs to PXI chassis or multiple PXI chassis for large distributed test systems.

• Legacy Compatibility: Works with older PXI/VXI devices, facilitating system upgrades.

• Precision Synchronization: Cross-chassis trigger/RTSI forwarding for accurate multi-module data acquisition.

Application Scenarios

• Distributed Automated Test: Control-room hosts managing production-line PXI chassis in aerospace, semiconductor, and automotive electronics.

• Harsh Industrial Environments: Power plants, rail transit, and manufacturing floors with strong electromagnetic interference.

• Long-Distance Monitoring: Structural health monitoring, remote equipment testing, and geographically dispersed test systems.

• Legacy System Upgrades: Seamless integration of traditional PXI/VXI equipment with modern host platforms.

• Multi-Chassis Synchronization: Large-scale test platforms requiring synchronous data acquisition across multiple PXI chassis.

Usage and Maintenance Instructions

Installation & Configuration

• Insert into a 3U PXI chassis slot (preferably near the system controller).

• Connect multi-mode fiber-optic cables between MXI-4 ports on PXI-8336 modules (no hot-swap during power-on).

• Power on devices in sequence; system auto-detects links and remote hardware.

• Enable MXI-4 functions in BIOS and configure PCI memory windows.

• Install NI-PXI drivers for trigger, interrupt, and advanced functionality support.

Daily Maintenance

• Inspect fiber-optic cables, connectors, and ports regularly for wear, damage, or looseness.

• Operate within rated temperature/humidity; keep chassis clean and dry.

• For EOL units, stock spare modules/cables to avoid downtime.

• Monitor front-panel LEDs and use NI diagnostic tools for fault localization.

• Store idle equipment in dry conditions; perform periodic power-on tests to prevent moisture damage.

Safety & Disposal

• Avoid hot-swapping cables/modules when powered on.

• Do not exceed environmental ratings to prevent hardware damage.

• Dispose of in accordance with local regulations for EOL electronic equipment.