Keithley KPCI-1801HC PCI Bus Data Acquisition Board

The Keithley KPCI-1801HC is a multifunction data acquisition board for PCI bus systems. It delivers 32 differential or 64 single-ended analog input channels, 2 analog output channels, and digital I/O capabilities. Engineered for demanding measurement and control applications, it combines high-speed sampling, flexible triggering, and bus-mastering DMA to support continuous acquisition of large data volumes with minimal CPU overhead.

Technical Specifications Analog Input

Channels: 32 differential or 64 single-ended (software configurable)

Resolution: 12 bits

Throughput: 333 kS/s single channel; 312.5 kS/s aggregate multichannel

Conversion rate range: 4.32 samples/hour to 333 kS/s

Input range: Software selectable via channel gain queue

Programmable gains: 1, 5, 50, 250

Input impedance: >100 MΩ || ≤90 pF (all gains)

Input overvoltage protection: ±15 V continuous (powered or unpowered)

Input bias current: ±40 nA @ 25°C; ±60 nA over operating range

Linearity: ±1 LSB integral maximum

A/D FIFO buffer: 2048 samples

Channel gain queue: 64 entries Analog Output

Channels: 2

Resolution: 12 bits

Output range: ±10 V

Accuracy: ±5 mV typical (high impedance)

Output impedance: 4 Ω

Output current: ±5 mA maximum

Maximum capacitive load: 100 µF

D/A FIFO buffer: 16 samples Data Acquisition

Transfer modes: DMA (bus master), interrupt, polled

Triggering: Pre-trigger, post-trigger, about-trigger; external hardware trigger and gate inputs

Clocking: External pacer clock or onboard time base

Burst mode: Programmable acquisition with configurable intervals

Key Features

32-bit bus-mastering DMA for continuous large-volume data acquisition

Multiple 37-pin D-type male connectors for external accessory integration

High input impedance (>100 MΩ) minimizes loading effects

Programmable gains support signal conditioning across wide dynamic ranges

Flexible triggering and clocking enable synchronized multichannel measurements

Typical Applications Process monitoring, transient capture, multichannel signal analysis, industrial control, and laboratory measurement systems requiring simultaneous analog sampling with digital synchronization.

Compatibility & Integration PCI bus interface. Compatible with DriverLINX software; refer to DriverLINX documentation for KPCI-1800 Series configuration.