Channel & Relay Configuration

• 16 independent SPDT latching relays (Form C), no shared channel circuitry
• Each channel contains Common, Normally Open (NO), Normally Closed (NC) terminals
• Rear 96-pin shielded DIN connector for front terminal block connection
• All relays controlled via SCXI backplane digital trigger bus

Relay Electrical Ratings

• Max switching voltage: 150 VDC, 125 VAC RMS
• Max switching current: 2 A per channel; continuous carry current: 5 A
• Max switching power: 60 W (DC), 62.5 VA (AC)
• Contact on-resistance: ≤50 mΩ initial value

Switching & Lifespan Parameters

• Maximum switching rate: 115 channel operations per second
• Mechanical relay lifespan: 100 million cycles (no-load switching)
• Electrical relay lifespan: 200,000 cycles at rated load
• Operating actuation time: 2.5 ms typical, 5 ms maximum

Key Electrical Specifications

• Channel-to-channel isolation: 250 Vrms continuous isolation
• Transient surge withstand: 1000 V 1μs lightning surge
• Thermal offset: <1 μV for low-level analog signal switching
• Backplane power consumption: 2.9 W typical operating power
• Contact material: Gold-plated ruthenium alloy for anti-oxidation

Mechanical & Environmental Specifications

• Dimension: 172×86×32 mm, standard single-slot SCXI module
• Operating temperature: -20℃ ~ +70℃
• Storage temperature: -40℃ ~ +85℃
• Humidity: 10%–90% non-condensing

Compatibility Matching List

• Matched terminal block: SCXI-1324 high-voltage screw terminal block
• Compatible chassis: SCXI-1000, SCXI-1001
• Compatible controllers: SCXI-1600, PCI/PXI SCXI adapters
• Official status: Obsolete, available for aftermarket replacement

Software Compatibility

• Drivers: NI-SWITCH, NI-DAQmx, Traditional NI-DAQ
• Configuration tools: NI MAX, NI Switch Executive
• Supported software: LabVIEW, LabWindows/CVI, Python, C#

Pros & Limitations

• Pros: Latching relays with zero holding power consumption, ultra-low thermal offset for weak signal switching, high channel isolation, long mechanical service life, mature matching with SCXI-1324
• Limitations: Obsolete official product, no built-in surge protection, lower switching speed than solid-state relays, periodic contact maintenance required