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.