The NI PXI-6704 is a high-performance analog output module for PXI systems delivering 32 simultaneous analog output channels—16 voltage outputs and 16 current outputs—with 16-bit resolution. Built on PXI Hybrid bus architecture, it executes software-timed precision DC setpoint applications and includes 8 digital I/O lines for auxiliary control. The module integrates persistent self-calibration across voltage offset, voltage gain, current offset, and current gain channels, minimizing channel-to-channel matching errors and ensuring repeatable accuracy across all outputs.
Technical Specifications
Analog Output Channels
• 16 voltage output channels, ±10.1 V range
• 16 current output channels, 0.1 mA to 20.2 mA range (sourcing only)
• 16-bit resolution, static output update rate
• Voltage accuracy: ±1 mV or ±710 µV
• Current accuracy: ±2 µA or ±1,435.0 nA
Digital I/O
• 8 lines, 5 V TTL/CMOS compatible
Physical & Environmental
• 68-pin SCSI II shielded I/O connector
• Dimensions: 10 × 16 cm (3.9 × 6.3 in.) excluding connectors
• Operating temperature: 0 °C to 55 °C
• Storage temperature: –20 °C to 70 °C
• Humidity: 5–90% RH noncondensing (operating and storage)
• Maximum altitude: 2,000 m, indoor use only
– Key Features
• Software-timed analog output control with no external excitation required for current sourcing
• Persistent self-calibration minimizes long-term drift and offset/gain errors
• Fused 5 VDC power available at I/O connector from PXI bus
• Hybrid PXI form factor integrates into any CompactPCI chassis conforming to PICMG CompactPCI 2.0 R3.0
– Typical Applications
Precision DC setpoint control, multi-channel stimulus generation, instrumentation calibration systems, automated test equipment requiring synchronized voltage and current sourcing.
– Compatibility & Integration
Supports Windows 2000/NT/XP, Linux, Mac OS X, and real-time operating systems. Operates with LabVIEW, LabWindows/CVI, Visual Studio .NET, Visual Basic, C/C++, and C# via NI-DAQmx or traditional NI-DAQ drivers.
