Keithley KPCI-1802HC PCI Bus Data Acquisition Board

The Keithley KPCI-1802HC is a PCI bus data acquisition board engineered for industrial and scientific applications demanding simultaneous multi-channel analog input and output. The board acquires data at up to 333 kS/s per channel with 12-bit resolution and configurable differential or single-ended input architecture. On-board FIFO buffering, programmable gain switching, and multiple data transfer modes enable continuous operation in signal processing and data logging systems.

Technical Specifications Analog Inputs

32 differential or 64 single-ended channels (software configurable)

12-bit resolution; 2048-sample FIFO buffer

Single-channel throughput: 333 kS/s; aggregate scanning: 312.5 kS/s

Gain settings: 1, 2, 4, 8 (software selectable via 64-entry channel gain queue)

Bipolar ranges: ±10 V (Gain 1), ±5 V (Gain 2), ±2.5 V (Gain 4), ±1.25 V (Gain 8)

Unipolar ranges: 0–10 V (Gain 1), 0–5 V (Gain 2), 0–2.5 V (Gain 4), 0–1.25 V (Gain 8)

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

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

Input impedance: >100 MΩ in parallel with ≤90 pF

Linearity: ±1 LSB integral max.

Common mode rejection: 74 dB (Gain 1), 79 dB (Gains 2–4), 84 dB (Gain 8) DC–60 Hz typical Analog Outputs

2 channels; 12-bit resolution

Range: ±10 V; ±5 mV typical accuracy (high impedance load)

Output impedance: 4 Ω; maximum current: ±5 mA

Maximum capacitive load: 100 µF; FIFO buffer: 16 samples Timing and Data Transfer

Internal pacer clock: 0.0012 Hz to 333 kHz

External pacer clock: up to 333 kHz

DMA (PCI bus master), interrupt, and polled transfer modes supported

Programmable burst mode with configurable channel scan intervals Power and Interface

Power supply: +5 V, ±15 V required for external circuits

PCI bus interface

Key Features

High-speed continuous data acquisition with on-board FIFO buffering

Bus mastering DMA for efficient multi-channel transfers

Channel gain queue enables non-sequential scanning at different gains

Programmable burst mode emulates simultaneous sample-and-hold across channel scans

Flexible triggering and gating control

Typical Applications

Complex signal processing and data logging tasks

Multi-channel sensor data acquisition with varying signal ranges

Industrial process monitoring and control systems

Research instrumentation requiring high-speed analog I/O

Compatibility & Integration Connects directly to PCI bus architecture. Supports differential and single-ended sensor inputs, accommodating standard signal conditioning chain requirements across DC to low-frequency applications.