The National Instruments PXI-2566 is a 16-channel SPDT relay module for automated test equipment and signal routing. It provides electromechanical, non-latching Form C armature relays with very low on-resistance and low thermal offset, supporting flexible topology as either 16-SPDT or 8-DPDT configuration. The module switches DC to 70 MHz bandwidth signals up to 150 V and 2 A per channel, with maximum switching power of 60 W per channel. All 16 channels can simultaneously operate at maximum current when ambient temperature does not exceed 25 °C.
Technical Specifications
• Channels: 16-channel SPDT (reconfigurable as 8-channel DPDT)
• Relay Type: Electromechanical Form C armature, non-latching
• Switch Bandwidth: 70 MHz
• Maximum Switching Voltage: 150 V DC / 125 V AC (channel-to-channel); 150 V DC / 125 V AC CAT I (channel-to-ground)
• Impulse Voltage Withstand: 800 V
• Maximum Switching Power: 60 W / 62.5 VA (DC to 60 Hz) per channel
• Maximum Switching Current: 2 A DC / 2 A AC per channel
• On-Resistance: Very low
• Thermal Offset: Low
• PXI Power Requirement: 4.5 W at 5 V; 2.5 W at 3.3 V
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: -20 °C to 70 °C
• Humidity: 5% to 85% non-condensing
– Key Features
• Configurable as 16-SPDT or 8-DPDT topology
• 62-pin D-SUB male connector with dedicated COM, NC, and NO signal terminals
• Hybrid-slot compatible with PXI Express and standard PXI slots
• 3U single-slot form factor (21.6 × 2.0 × 13.0 cm)
• Rated for Measurement Category I operation; suitable for signal voltages up to 150 V
• TTL-compatible trigger inputs (0.7 V max low, 2.0 V min high, nominal 3.3 V)
– Typical Applications
• Multi-channel signal routing and switching
• High-current automated test equipment (ATE)
• Low-voltage DC and AC signal control
• Test system matrix switching
– Compatibility & Integration
Works in any PXI hybrid slot or standard PXI slot. Requires minimal chassis power draw. Meets EMC standards and complies with CAT I safety requirements.
