The NI PXI-2565 is a 16-channel general-purpose relay module for PXI systems, delivering high-current switching for automated test and control applications. Each channel features a non-latching Single Pole Single Throw (SPST) Form A electromechanical armature relay with gold-flash silver alloy contacts. The module handles DC power supplies, AC line power, and AC/DC current sources with independent channel control and full software programmability through IVI-compliant NI-SWITCH driver software.
Technical Specifications
Electrical Performance
• Maximum switching voltage: 125 V DC / 250 V AC (channel-to-channel and channel-to-ground, CAT II)
• Maximum switching current: 7 A DC and AC
• Minimum switching current: 5 A at 30 V DC
• Maximum carry current: 5 A DC, 7 A AC
• Maximum switching power: 150 W / 1750 VA per channel
• Switch bandwidth: 10 MHz
• DC path resistance: 1 Ω end of life
• Isolation: 1400 Vrms between input signals and backplane
Dynamic Characteristics
• Relay operate time: 5 ms typical, 10 ms maximum at 20 °C
• Relay release time: 4 ms typical, 5 ms maximum at 20 °C
• Mechanical life: 5 × 10⁷ cycles
• Electrical life at maximum load: 1 × 10⁵ cycles
• Scan rate: 5 cycles/s
Physical & Environmental
• Form factor: 3U, two-slot PXI chassis
• Dimensions: 21.6 × 4.1 × 13.0 cm
• Weight: 390 g
• Connectors: 16 × 2 minicombicon headers
• Operating temperature: 0 °C to 50 °C
• Power requirement: 5.5 W at 5 V
– Key Features
• 16 independent SPST relays with 1024-step deterministic scanlist
• Trigger I/O on PXI lines 0–7 with 70 ns minimum pulse width
• Multiple instrument synchronization support
• IEC 61010-1 / UL 61010-1 safety compliance, Measurement Category II
– Typical Applications
Automated switching and routing of power supplies, AC line power distribution, DC/AC current source management, and signal path configuration in production test environments.
– Compatibility & Integration
Full integration with NI Switch Executive software, compatible with IVI instrument drivers, and supports synchronized multi-instrument test sequences via PXI trigger lines.
