NI SCXI-1130 – Reed Relay Switching Module for Flexible Signal Routing in SCXI Systems

The NI SCXI-1130 is a reed relay switching module designed for the SCXI platform, typically used to route multiple sensor or test points into a smaller number of measurement channels. From my experience, it’s a practical way to build multiplexed measurement setups or compact matrices inside an SCXI chassis without adding external switch boxes. You might notice that it shines when you need low-leakage, low-thermal switching for precision analog signals, or when you’re scanning a lot of points in functional test and data acquisition benches.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Reed relay architecture – Low-leakage and low thermal EMF behavior makes it suitable for precision, low-level analog measurements.
• Multiplexing and matrix options – With the appropriate terminal block, the SCXI-1130 can be wired for multi-channel scanning or compact matrix configurations.
• Backplane-controlled – No separate communication port on the module; it’s managed by the SCXI chassis and your DAQ controller for synchronous, deterministic switching.
• SCXI ecosystem fit – Works inside SCXI-1000/1001 series chassis and pairs with NI DAQ for LabVIEW or NI-DAQmx-based applications.
• Channel isolation – In many cases, reed relays provide high off-isolation and low crosstalk compared with general-purpose electromechanical relays.
• Front terminal convenience – Mates with SCXI terminal blocks for clean wiring, strain relief, and faster panel build-out.

Technical Specifications

Related or Supporting Products

• SCXI-1331 / SCXI-1332 terminal blocks – Matching terminal blocks offering different wiring topologies and connector styles for the SCXI-1130.
• SCXI-1127 / SCXI-1128 – Alternative NI switch modules; typically used when different voltage/current ratings or channel counts are needed.
• SCXI-1160 / SCXI-1161 – General-purpose relay modules when you need higher power switching rather than low-level reed switching.
• SCXI-1000 / SCXI-1001 chassis – 4-slot and 12-slot chassis for building out your SCXI system.
• SCXI-1600 – USB interface for standalone SCXI systems, or use NI DAQ cards with an SCXI cable interface.

Installation & Maintenance

One thing I appreciate is how straightforward installation can be when the basics are right. Power down the chassis, slide the module into a free slot, secure the screws, then attach the matching terminal block. Keep the cabinet well-ventilated with clear airflow; reed relays don’t run hot, but stable temperature typically improves long-term reliability.

• Environment: Maintain a clean, dry cabinet; avoid condensation and corrosive atmospheres. Operate within the SCXI temperature range.
• Wiring: Use shielded, twisted pairs for low-level analog. Route high-energy lines separately and respect the relay ratings to avoid contact damage.
• Grounding: Bond shields at a single point to reduce ground loops; keep reference potentials consistent across the rack.
• Maintenance: Periodically actuate unused relays to limit stiction, check terminal block tightness, and clean edge connectors during scheduled downtime.
• Software/Drivers: Use NI-DAQmx (or compatible legacy drivers for older deployments) and keep to a validated version; firmware updates are not typically required for the switch itself.
• Safety: De-energize circuits before rewiring; verify isolation when switching between different signal sources.

A quick note from a customer running reliability tests: after swapping to SCXI-1130 with the proper terminal block, their scan time stayed consistent while leakage dropped enough to stabilize low-µV measurements, which is often what people look for with reed-based modules.

Quality & Certifications

• Manufactured within an ISO 9001 quality system (NI production)
• CE and RoHS conformity for SCXI modules in most regions
• UL/cUL listings commonly apply to SCXI chassis and power assemblies
• Standard manufacturer warranty is typically 1 year; our coverage: 365 days