Description
NI SCXI-1327 – Front-Mount Terminal Block for SCXI Switching and Signal Routing
The NI SCXI-1327 is a front-mount terminal block designed for National Instruments SCXI switch and signal-routing modules—most commonly paired with SCXI-1127/SCXI-1128 for high-density multiplexing. From my experience, it’s the piece that quietly makes the wiring clean, channel mapping straightforward, and field connections reliable. You might notice it’s sometimes written as “SXCI-1327”; the correct model is SCXI-1327.
Typical users are test engineers building matrix/multiplexer banks in SCXI chassis, consolidating dozens of field points into a tidy, documented front end. One thing I appreciate is how the SCXI-1327 keeps wiring consistent across bays—less guesswork when you’re tracing signals during maintenance. A maintenance engineer told us, “Swapping a module was a 10‑minute job; the labeling on the 1327 kept the channel map obvious.”
Order Placement Process and Guarantees
- Warranty period: 365 days
- Delivery time: 1 week for in-stock; no more than one month at the latest
- Payment terms: 50% advance payment; full payment before delivery
- Express options: FedEx, UPS, DHL
Key Features
- Purpose-built for SCXI switching: Typically used with SCXI-1127/SCXI-1128 modules for high-density multiplexing and signal routing.
- Clean screw-terminal wiring: Labeled terminals help map channels quickly, reducing wiring mistakes during build and service.
- Front-mount, quick install: Captive hardware and a direct front-panel fit make installation straightforward in most SCXI chassis.
- Shield and ground friendliness: Provides grounding points to keep noise down in mixed-signal racks.
- Supports 2-wire/4-wire routing: Works with the host module’s topology; practical for resistance measurements and general switching.
- Serviceable in the field: Terminal labeling and access make continuity checks and channel tracing easier.
Technical Specifications
| Item | Details |
|---|---|
| Brand / Model | National Instruments (NI) / SCXI-1327 |
| HS Code (reference) | 8536.90 – Electrical apparatus for switching/protecting or for making connections (exact code may vary by country) |
| Power Requirements | Passive terminal block; no external power |
| Compatible Modules | Commonly used with SCXI-1127 / SCXI-1128 (SCXI switch/multiplexer family) |
| Operating Temperature | Typically 0 to 55 °C (non-condensing environment) |
| Signal I/O Types | Screw-terminal connectivity for multiplexed/switch channels; supports 2-wire/4-wire routing depending on host module topology |
| Communication Interfaces | Not applicable (interfaces through the SCXI module and backplane) |
| Installation Method | Front-mount on the SCXI module; captive screws; labeled channel mapping |
| Dimensions & Weight | Front-panel form factor matched to SCXI modules; lightweight (typically <0.5 kg) |
Related or Supporting Products
- SCXI-1127: High-density multiplexer/switch module; pairs with SCXI-1327 for general-purpose routing.
- SCXI-1128: Similar switching capability with variant relay characteristics; often used with SCXI-1328 terminal block.
- SCXI-1328: Alternative terminal block option for the SCXI-1128, depending on wiring style and channel mapping preferences.
- SCXI-1000 / SCXI-1001 Chassis: Standard chassis platforms that house SCXI modules and provide power/backplane.
- SCXI-1600: USB-based SCXI controller module, handy when you want a direct PC connection without a DAQ card.
Installation & Maintenance
- Mounting: Install the SCXI-1327 directly on the SCXI module front panel using the captive screws. Ensure the chassis (e.g., SCXI-1000 series) is powered down during wiring.
- Wiring practice: Use appropriately rated wire (often 16–26 AWG works well). Keep low-level and high-level signals separated to minimize crosstalk; maintain short ground leads.
- Cabinet & ventilation: Provide adequate airflow around the chassis. In most cases, a 19-inch rack with forced ventilation keeps temperatures within the 0–55 °C operating range.
- Safety: Verify channel ratings against the host module’s specifications. De-energize circuits before changing connections; follow local electrical codes.
- Routine maintenance: Periodically re-torque terminal screws, inspect for loose strands, and clean dust with dry air. No firmware applies—maintain the host module/chassis firmware as recommended by NI.
- Labeling: Keep a printed channel map in the cabinet; it saves time when you repurpose channels during test reconfiguration.
Quality & Certifications
- CE and RoHS compliance are typically applicable to NI SCXI systems and accessories.
- UL/CSA compliance is generally determined at the system/module level; the terminal block follows the host module’s compliance envelope.
- Warranty: 365 days from us. NI’s own policies may vary by region and product generation.
If you’re consolidating switch channels or refreshing an SCXI rack, the SCXI-1327 tends to be a safe, no-drama choice—especially when you want repeatable wiring and clear channel mapping without redesigning the front end.
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