The NI SCXI-1124 is a 6-channel isolated digital-to-analog converter module for use within National Instruments SCXI chassis. It provides six independently isolated 12-bit DAC channels capable of sourcing precise DC voltage or current signals in industrial process control, laboratory measurements, and data acquisition systems. Channel-to-channel and channel-to-earth ground isolation withstands up to 250 Vrms common-mode voltage. Digital control over the SCXIbus allows a single data acquisition device to manage multiple modules, enabling system scalability.
Technical Specifications
Analog Output
• 6 channels, 12-bit resolution
• Voltage output ranges: 0 to +1 V, 0 to +5 V, 0 to +10 V (unipolar); -1 to +1 V, -5 to +5 V, -10 to +10 V (bipolar)
• Current output range: 0 to 20 mA with 15 V internal loop supply per channel (supports loads up to 600 Ω without external supplies)
• Maximum output signal: Up to 60 VDC when channels are progressively connected
• Output buffer: Low impedance, capable of driving up to 5 mA
• Update rates: 555 S/s (single channel), 125 S/s per channel (all six channels)
• Designed for static DC signals
Hardware
• Front connector: 48-pin DIN C male
• Rear connector: 50-pin male ribbon-cable
• Dimensions: 1.2 in. × 6.8 in. × 8.0 in.
• Onboard EEPROM for calibration constant storage
– Key Features
• Independent channel isolation supporting high common-mode voltages (250 Vrms)
• Flexible voltage and current output modes within single module
• Multiplexed serial control using up to five digital I/O lines from host DAQ device
• Compatible with NI-DAQmx driver software and LabVIEW/LabWindows/CVI environments
– Typical Applications
Industrial process control, laboratory signal generation, multi-channel DC sourcing in isolated measurement systems.
– Compatibility & Integration
Operates within NI SCXI chassis. Compatible with NI MIO boards, Lab boards, PC-LPM-16, DIO-24, DIO-32F, DIO-96 boards, and SCXI-1200 DAQ and control module. Recommended operating conditions: 18 to 28 °C, relative humidity below 80%.
