Product Core Brief
- Model: SCXI-1000
- Brand: National Instruments (NI)
- Series: SCXI (Signal Conditioning eXtensions for Instrumentation)
- Core Function: Provides a rugged, low-noise enclosure to power, route, and manage timing/triggering for up to four SCXI modules.
- Product Type: SCXI Chassis / Frame
- Key Specs: 4 Slots | 32 Configurable Addresses | Multi-Region AC Power
- Condition: New Original (New Surplus) ⚠️ EOL / Discontinued
Product Introduction
NI is a foundational 4-slot chassis designed to hold and power SCXI signal conditioning modules. This unit acts as the backbone of legacy SCXI data acquisition systems, handling all timing, triggering, and signal routing between the connected SCXI modules and the host digitizer or DAQ device.
Unlike standard DAQ cards, the is a passive infrastructure component that does not perform data acquisition itself; it requires a connected multifunction I/O device (such as an SCXI-1600 or E/M-series DAQ card) to control the system. It features front-panel DIP switches to configure one of 32 unique chassis addresses and supports daisy-chaining up to eight chassis for high-channel-count applications. Note: This product has been officially discontinued by NI.
NI SCXI-1000
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Capacity | Up to 4 SCXI Modules |
| Chassis Addressing | 32 Unique Addresses (via 5 DIP switches) |
| Operating Voltage | 100, 120, 220, or 240 VAC (Selectable) |
| Expansion | Daisy-chain up to 8 Chassis |
| Signal Routing | Handles Timing, Triggering, and Multiplexing |
| Host Controller Req. | SCXI-1600 or E/M-Series DAQ Device |
| Form Factor | Desktop/Rack-mountable SCXI Frame |
| Driver Software | NI-DAQmx (v19.0 and earlier) |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: We trace source serial numbers against factory records. Visual inspection checks for backplane connector pin damage, chassis dents, and power entry module integrity.
- Live Functional Test: Power-on self-check runs first. We verify backplane communication, test the reset button functionality, and run continuous load tests >24 hrs with temp logging.
- Electrical Parameter Test: Insulation resistance gets tested at 500 V Megger (>10 MΩ required). Ground continuity and power rail stability (+5 VDC backplane) are mandatory.
- Address & Fuse Verification: Read and record DIP switch address settings. Photograph and verify the condition of both the power entry module fuse and internal backplane fuses.
- Final QC & Packaging: Seal in anti-static bag. Apply QC Passed label with test date and engineer initials.
Replacement Pitfall Guide
❗ System Compatibility: The is a chassis only. Ensure you have a compatible controller module (e.g., SCXI-1600) installed in Slot 0, as the chassis cannot acquire data independently.
❗ Software/Driver Mismatch: Because this hardware is discontinued, it is not compatible with newer versions of LabVIEW and NI-MAX. You must use NI-DAQmx version 19.0 or earlier.
❗ Address Conflicts: If daisy-chaining multiple chassis, verify the DIP switch settings on the front panel. Switches 1-5 represent binary values (1, 2, 4, 8, 16); duplicate addresses on the same bus will cause communication failures.
❗ Power Supply Misconception: While the chassis provides regulated +5 VDC to the backplane for SCXI modules, it is not intended to be used as a general-purpose external DC power supply for other equipment.
❗ ESD Damage: Use anti-static mat and wrist strap. Dry environments increase failure risk during module installation.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- → SCXI-1000DC : Needs Adaptation — DC-powered variant, requires SCXI-1382/1383 power supplies
- → SCXI-1001 : Needs Adaptation — 12-slot variant, verify rack space and power draw
- → PXI-1031 : Incompatible — Different platform architecture (PXI vs. SCXI)
Benchmarks:
- Scan Cycle: Dependent on inserted SCXI modules and host DAQ card
- Comms Throughput: Parallel/Multiplexed (via Host DAQ Device)
