The National Instruments PXI-2566 is a 16-channel SPDT relay switch module for the PXI platform, delivering high-speed signal routing and control in automated test environments. Each channel features normally closed, normally open, and common terminals on a single Form C armature relay, with very low on-resistance and low thermal offsets. The module supports 70 MHz switch bandwidth and operates at cycle speeds up to 115 cycles/s, making it ideal for high-frequency switching applications requiring fast relay response times of 2 ms typical (4.4 ms maximum).
Technical Specifications
Switching Performance
• 16-channel SPDT topology (configurable as 8-channel DPDT)
• Maximum switching voltage: 150 V DC / 125 V AC (channel-to-channel and channel-to-ground, CAT I)
• Impulse voltage withstand: 800 V
• Maximum switching current: 2 A DC / 2 A AC per channel (all 16 channels at ≤25 °C)
• Maximum carry current: 5 A DC / 5 A AC per channel (9 simultaneous channels at ≤25 °C)
• Maximum switching power: 60 W / 62.5 VA per channel (DC to 60 Hz)
• Relay operate time: 2 ms typical, 4.4 ms maximum
• Cycle speed: 115 cycles/s
• Switch bandwidth: 70 MHz
Electrical & Control
• Trigger input voltage range: -0.5 V to +5.5 V nominal (logic levels: 0.7 V max low, 2.0 V min high)
• Power consumption: 4.5 W @ 5 V, 2.5 W @ 3.3 V
• I/O connector: 62-pin D-SUB (male)
Environmental
• Operating temperature: 0 °C to 55 °C
• Storage temperature: -20 °C to 70 °C
• Humidity: 5% to 85% (non-condensing)
• Shock: 30 g peak, half-sine, 11 ms pulse
• Vibration: 5 Hz to 500 Hz, 2.4 grms (non-operating)
– Key Features
• Form C armature relays with minimal thermal drift
• Hybrid-slot compatible for PXI Express and standard PXI installations
• IEC 60068-2-27 and MIL-PRF-28800F safety compliance
• CISPR 11 Class A EMC certification
• 3U single-slot form factor, 250 g weight
– Typical Applications
• High-current signal switching and routing
• Automated test equipment (ATE) signal multiplexing
• Power supply control and monitoring
• RF/analog signal path selection
– Compatibility & Integration
Installs in any PXI chassis supporting hybrid-slot architecture. Supports both PXI Express and standard PXI slots. Trigger input and output connectors enable external synchronization and module-to-module sequencing.
