Product Short Description
Product Name
C Series Analog Output Module
Product Introduction
The NI 9263 is a 4-channel voltage output module from the National Instruments C Series DAQ platform. It provides 16-bit resolution and 100 kS/s per channel simultaneous update rate, with channel-to-ground isolation, designed for control signal generation, actuator drive, and waveform output applications.
Description
Technical Specifications
- Number of Channels: 4 analog output channels
- DAC Resolution: 16 bits
- Maximum Update Rate: 100 kS/s per channel (simultaneous)
- Output Voltage Range: ±10 V nominal
- Current Drive: ±1 mA per channel maximum
- Output Impedance: 2 Ω
- Slew Rate: 4 V/μs
- Isolation: 250 V RMS channel-to-ground isolation
- Overvoltage Protection: ±30 V
- Connector Type: Screw terminal
- Operating Temperature: -40°C to 70°C
Functional Features
- Simultaneous output update across all channels
- Built-in short-circuit and overvoltage protection
- Low crosstalk between channels
- NIST-traceable calibration for output accuracy
- Compatible with CompactDAQ and CompactRIO systems
Application Scenarios
- Industrial actuator and valve control signal generation
- Function and arbitrary waveform output
- Servo drive command signal generation
- Sensor simulation and calibration
- Closed-loop control system output
Structural Characteristics
- Screw terminal interface for direct field wiring
- Isolated design for safe connection to field devices
- Compact C Series form factor for high-density integration
- Rugged metal housing for industrial environments
- Channel status indicators for diagnostics
Working Principle
The module receives digital output values from the host controller, converts the digital data to analog voltage signals using 16-bit string DACs, and conditions the signals through output amplifiers. The isolated output stages provide electrical separation between the DAQ system and field devices, protecting both the module and connected equipment from voltage transients.
Installation Requirements
- Install in any available C Series chassis slot
- Use 14–26 AWG copper wire for output connections
- Torque screw terminals to manufacturer-specified values
- Ensure load impedance does not exceed drive capability
- Ground the chassis properly for safety and noise performance
Usage Notes
- Do not connect loads drawing more than 1 mA per channel
- Avoid short-circuiting the output terminals
- Verify output polarity before connecting polarized devices
- Do not apply external voltage to the output terminals
- Perform periodic output calibration to maintain accuracy
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