Keithley KPCI-3108 PCI Bus Data Acquisition Board

The Keithley KPCI-3108 is a PCI bus data acquisition board delivering 16-bit analog input and output with programmable gains, digital I/O, and counter/timer functionality. Engineered for precision measurement and control in laboratory and industrial environments, it combines high-resolution data acquisition with flexible triggering and multiple data transfer modes.

## Technical Specifications

**Analog Input**
• 16-bit resolution, 16 single-ended or 8 differential channels
• Programmable gains: 1, 2, 4, 8, 10, 20, 40, 80, 100, 200, 400, 800 per channel
• 24 programmable ranges (12 unipolar, 12 bipolar)
• Maximum sample rate: 100 kSamples/s per single channel; aggregate 100 kSamples/s for multiple channels
• Separate 2K sample input FIFO
• Autozero capability eliminates measurement drift
• Factory-programmed calibration per range
• Offset temperature coefficient: 310 µV/°C (typical)
• Gain temperature coefficient: 60 ppm/°C (typical)
• Slew rate: 5 V/µs

**Analog Output**
• 2 waveform-quality channels with 16-bit DACs
• Maximum update rate: 500 kSamples/s
• Output ranges: ±10 V, ±5 V, 0–10 V, 0–5 V
• Output current: ±5 mA maximum
• Separate 2K sample output FIFO
• Control modes: Target, Paced, and Burst
• Worst-case intra-burst skew: 2 µs (typical)

**Digital I/O & Counters**
• 32-bit general-purpose I/O (8-bit register in/out)
• 6-bit multifunction inputs
• High-current digital outputs: 64 mA sink, 15 mA source
• Three 16-bit counters with 32-bit cascade option
• Software-selectable timebases: 5 MHz, 10 MHz, 1 MHz, 100 kHz

**Timing & Control**
• Triggering modes: Pre-trigger, Post-trigger, About-trigger, Start, Stop
• External hardware trigger and gate inputs
• Pacer clock: external or onboard, supporting 4.32 Samples/hour to 100 kSamples/s

**Data Transfer & Connectivity**
• Transfer modes: PCI Bus Master (DMA), Interrupt, Polled
• Supports 1 to 255 data buffers per task with no single-buffer size limits
• Dual 36-pin MDR female connectors

## Key Features

• Per-channel range and gain configuration
• Separate input/output FIFOs reduce CPU overhead
• Hardware triggering for synchronized acquisition
• 32-bit cascade counter for extended timing resolution

## Typical Applications

Precision data logging, real-time control systems, automated test environments, multi-channel signal acquisition, and industrial process monitoring.

## Compatibility & Integration

32-bit DriverLINX drivers with support for ExceLINX, VisualSCOPE, TestPoint, and LabVIEW. Expansion capability via EXP-1800 accessory.