I. Product Introduction

NI SCXI-1325 is a high-voltage shielded analog output terminal board, specifically designed for SCXI-1124 (6-channel analog output module). Its core consists of 26 screw terminals + 250Vrms common-mode isolation, used for high-voltage analog signal output and connection to the load. It features a full metal shielding and isothermal structure. It is now obsolete and provides spare parts and maintenance.

II. Model and Part Number

Model: SCXI-1325

Part Number: 777687-25

Location: Dedicated high-voltage analog output terminal board for SCXI-1124

III. Technical Parameters

Electrical Parameters

Compatible Module: SCXI-1124 (6-channel analog output)

Terminal Quantity: 26 screw terminals (24 signal + 2 chassis ground)

Common-mode Isolation: 250Vrms (channel-to-channel, channel-to-ground)

DC Suppression: ±50VDC (1MΩ common-mode)

Wire Gauge: 26–14 AWG

Cold Junction Compensation: None

Connector: 96-pin DIN on the backplane, direct connection to the front end of SCXI-1124

Mechanical and Environmental

Size: Standard SCXI (same as 1320 series)

Weight: Approximately 450g

Installation: Direct insertion into the 1124 front end, fixed with thumb screws on top and bottom

Temperature: Operating 0–50℃; Storage - 20–70℃

Humidity: 5%–90% RH, no condensation

Shielding: Full metal shielding enclosure, anti-EMI/RFI

Safety Certification: IEC 61010-1, UL 3111-1, CAN/CSA C22.2 No.1010.1

IV. Interfaces and Configuration

Front Panel: 26 screw terminals (signal / ground), no jumpers / no switches

Backplane: 96-pin DIN connector, direct connection to SCXI-1124

Configuration: Plug-and-play, no hardware / software settings

Software: Compatible with NI-DAQmx, supports LabVIEW, C/C++, LabWindows/CVI

V. Core Functions

High-voltage analog output: 250Vrms isolation, compatible with high-voltage analog loads (actuators, frequency converters).

6 independent connections: Each channel can be configured for current/voltage output, with clear wiring and convenient maintenance.

Industrial-grade anti-interference: Full metal shielding + isothermal structure, suitable for strong electromagnetic environments, ensuring stable output.

High-reliability connection: Screw terminals with stress release, preventing vibration loosening, suitable for long-term operation.

VI. Application Scenarios

High-voltage analog control: Analog signal output within 250Vrms (valves, motors, heaters).

SCXI-1124 companion: Dedicated terminal board for 6-channel analog output module, building a high-voltage control system.

Industrial Automation: High-voltage equipment control in production lines, power regulation, closed-loop control.

Test Measurement: High-voltage signal source output, load drive test, analog signal calibration.

VII. Usage and Maintenance Use

Power-off installation: Align 1124 front end and push in, then lock the thumb screws on the top and bottom.

Wiring: Connect the output signal to the load, the shield to the ground to reduce interference.

Software: Select 1124 in NI-DAQmx, configure the output type / range, no additional settings required. Maintenance

Environment: 0 - 50℃, dry and ventilated, away from strong electromagnetic interference.

Check: Regularly inspect for loose screws and oxidation of terminals. Tighten and clean.

Cleaning: Power off, wipe terminals with anhydrous alcohol, then power on after drying.

Storage: Power off and remove the board, seal it in an anti-static bag, and store in a cool and dry place.