Part Code Definition

SCXI = NI SCXI signal conditioning chassis platform

1124 = 6-channel isolated DAC analog output module model, fixed 12-bit resolution architecture.

Technical Specifications

Channel count：6 fully independent galvanic isolated output channels

DAC resolution：12-bit per channel

Voltage output ranges：Unipolar:0~1V/0~5V/0~10V; Bipolar:±1V/±5V/±10V, max single channel drive 5mA; series-connected channels up to 60VDC total output

Current output：0~20mA per channel fixed range

Update rate：Single channel max 555S/s; full 6-channel simultaneous 125S/s per channel

Isolation rating：250Vrms channel-to-backplane galvanic isolation

Onboard storage：EEPROM for saving calibration coefficient

Operating temperature：0℃~+50℃ operation, -40℃~+70℃ storage, RH5%~95% non-condensing

Dimension：Standard SCXI module 173×86×203mm, standard chassis slot installation

Certification：CE, UL certified

Interface & Communication Configuration

Front terminal：96-pin DIN connector, pairing SCXI-1324 screw terminal accessory for field actuator wiring

Rear interface：SCXI standard golden finger backplane, plug into SCXI chassis slot, digital command transmitted via SCXI internal bus from PCI/PCIe NI DAQ control card

Control mode：Digital bus control by host DAQ card, multiple SCXI-1124 cascaded in one chassis under single DAQ controller

Core Functions

Convert digital control command from DAQ system into isolated analog voltage/0~20mA current signal for field actuator drive

Per-channel independent isolation eliminates ground loop interference between control cabinet and field equipment

Software flexible channel mode switching between voltage/current output via LabVIEW/NI-DAQmx configuration

Built-in stored calibration data guarantees long-term output precision without frequent field recalibration

Multi-module stacking expands total analog output quantity for large-scale distributed process control

Application Scenarios

Industrial test bench servo valve analog control, environmental chamber heater/damper regulation, chemical plant PID analog output control, legacy SCXI DAQ system spare replacement, lab precision power source analog setting output.

Operation & Maintenance Notes

Cut off chassis power before plug/unplug module; use shielded twisted wire for field output wiring to reduce EMI drift; match output range with actuator rated input in DAQ software; periodically inspect terminal screw tightness to avoid open circuit; keep module ventilation free from dust accumulation.