The NI Lab-PC+ is a multifunction I/O board for ISA bus systems, integrating analog input, analog output, digital I/O, and counter/timer functions into a single measurement and control platform. Designed for PC AT and compatible computers, it delivers 12-bit data acquisition and control capabilities across eight analog input channels, two analog output channels, 24 digital I/O lines, and six independent counter/timer channels.
Technical Specifications
Analog Input
• 8 single-ended or 4 differential channels
• 12-bit successive-approximation ADC
• Unipolar: 0 to 10 V; Bipolar: ±(5/gain) V
• Programmable gain for enhanced resolution
• Maximum input voltage rating: ±45 V (powered on or off)
• External trigger via EXTCONV* pin (pin 40) on high-to-low transition
Analog Output
• 2 channels, 12-bit DAC resolution
• Unipolar: 0 to 10 V; Bipolar: ±5 V
• Maximum load current: ±2 mA for 12-bit linearity
Digital I/O
• 24 TTL-compatible lines
• Three configurable 8-bit ports (A, B, C)
• Input, output, bidirectional, and handshaking modes supported
• Capable of switching external devices and generating interrupts
Counter/Timers
• 6 independent 16-bit channels
• 2 MHz internal clock available for Counter A0
• Synchronize events, generate pulses, measure frequency and time
• Based on OKI 82C53 System Timing Controller
– Key Features
• ISA bus interface with 6 jumpers and 1 DIP switch configuration
• OKI Semiconductor analog and digital integrated circuits
• ±45 V overvoltage protection on analog inputs
• Mixed analog and digital I/O in single-card form factor
– Typical Applications
Data acquisition, process control, laboratory instrumentation, industrial test systems, and hardware-in-the-loop measurement platforms requiring integrated A/D, D/A, and timing functions.
– Compatibility & Integration
Supports NI-DAQ software for PC compatibles. Programming available through LabVIEW, LabWindows/CVI, and register-level interfaces.
