Product Introduction

The NI SCXI-1337 is a shielded matrix switch terminal block, specifically designed to be paired with the SCXI-1129 high-density matrix switch module. It can configure the module into a dual 4×32 two-wire matrix (two independent groups), suitable for dual-channel parallel signal routing and medium-density switching applications. It features a full metal shielded housing with strong anti-interference capabilities, and the standard part number is 777687-37.

Model Interpretation

SCXI: Instrument Signal Conditioning Expansion Platform (NI Modular Signal Conditioning Series).

13xx: Front-end installation terminal block series for the SCXI system.

SCXI-1337: Special terminal block for SCXI-1129, enabling a dual 4×32 independent matrix. Technical Specifications

Electrical parameters

Adapter module: SCXI-1129

Matrix configuration: Dual 4×32 two-wire independent matrix (two completely isolated groups)

Channel-to-ground / channel-to-channel voltage: 150V (CAT I), capable of withstanding 800V pulse voltage

Maximum current per channel: 2A (AC/DC)

Triggering and scanning: With advanced scanning output, external input trigger terminals

Expansion interface: 2 128-pin DIN connectors (column expansion), row expansion connector

Adapter wire gauge: 26 AWG to 14 AWG

Cold end compensation: None

Mechanical and environmental parameters

Installation: SCXI standard front-end installation, 2 wing-shaped screws for fixation

Operating temperature: 0℃ to 50℃

Storage temperature: -20℃ to 70℃

Relative humidity: 10% to 90% (no condensation)

Pollution grade: 2, indoor with altitude below 2000m

Shielding: Full metal enclosure, suppressing EMI/RFI

Safety compliance: IEC 61010-1, UL 61010-1, CAN/CSA-C22.2 No.1010.1; EMC: EN 55011 Class A, EN 61326

Interface and communication configuration

Front: Dual 4×32 matrix screw terminals, trigger terminals, expansion interface, with stress release structure and safety grounding tab

Back: Dedicated connectors directly connected to SCXI-1129, no additional wiring required

Expansion: Supports row/column expansion, can be combined into double 4×64, 8×32, etc. larger matrices

Software compatibility: Plug-and-play, compatible with NI-DAQmx driver, supports LabVIEW, C/C++, LabWindows/CVI, etc. development environments

Core functions

Realize the dual 4×32 independent matrix configuration of SCXI-1129, providing two groups of isolated medium-density signal routing capabilities.

Support flexible row/column expansion to meet the channel expansion requirements of parallel test systems.

Full metal shielding structure, effectively suppressing electromagnetic interference, ensuring signal integrity in complex industrial environments.

Screw terminal connection is reliable and resistant to vibration, with stress release design, suitable for long-term online operation.

Integrated trigger and scanning output terminals, facilitating synchronous control of multi-device systems. Applicable scenarios

Build a dual 4×32 matrix switching system in conjunction with SCXI-1129 for dual-channel parallel signal routing and functional testing.

This is applicable to fields such as semiconductor testing, automotive electronics, and aerospace, which require two independent signal switching systems.

Industrial automation test platforms, laboratory multi-channel calibration and signal distribution equipment.

Large-scale test systems that need to isolate dual channels while balancing density and flexibility.

User Manual for Use and Maintenance Instruction Manual

Before installation, cut off all power supplies. Align the terminal board with the front interface of the module and insert it smoothly. Tighten the fixing screws.

Complete the two-wire connection according to the terminal markings. Ensure reliable grounding of the shield terminal and the safety grounding piece to reduce interference.

If expansion is needed, use the dedicated expansion cable / plug to connect the row and column expansion interface to ensure a secure connection.

Configure the dual matrix mode, trigger parameters and scan sequence in the software. Once completed, data can be collected.

Maintenance instructions

Place the equipment in a dry and ventilated area, maintaining the rated temperature and humidity. Keep away from strong electromagnetic sources, dust and corrosive gases.

Regularly check if the connection screws are loose, if the terminals are oxidized, and if the insulation layer of the cables is damaged. Address any issues promptly.

Cleaning should be done while the power is off. Use isopropyl alcohol to wipe the surface and terminals, and allow it to dry completely before reconnecting the power.

When the equipment is idle for a long time, remove the terminal board and place it in an anti-static bag. Store it in a cool and dry environment.