The Keithley DAS-1802HC is a 12-bit multifunctional I/O board for high-performance data acquisition and control in instrumentation, automation, and testing applications. This single-slot AT-board plug-in delivers extensive analog and digital I/O capabilities, supporting up to 64 single-ended or 32 differential analog input channels with software-programmable gains of 1, 2, 4, and 8. The board achieves 333 kS/s maximum sampling rate on single channels and 312.5 kS/s aggregate sampling across multiple channels, with 1024-location FIFO buffering and 64-location gain-channel queue for flexible signal routing.
Technical Specifications
• Analog inputs: 64 single-ended or 32 differential channels
• Input resolution: 12-bit
• Maximum sampling rate: 333 kS/s (single channel); 312.5 kS/s (multiple channels)
• Input ranges (Model 02): Unipolar 0–10 V, 0–5 V, 0–2.5 V, 0–1.25 V; Bipolar ±10 V, ±5 V, ±2.5 V, ±1.25 V
• Programmable gains: 1, 2, 4, 8
• FIFO buffer: 1024 locations
• Gain-channel queue: 64 locations
• Digital inputs: 4
• Digital outputs: 8
• Analog outputs: 2 channels, 12-bit, ±10.0 V range, 500 kS/s update speed
• Data transfer: 16-bit on AT bus
• Triggering: Pre-, post-, and about-triggering modes
• Burst mode sampling: Programmable simultaneous sample-and-hold emulation
– Key Features
• Flexible analog input configuration supporting both single-ended and differential channels
• Deep FIFO memory minimizes data loss during high-speed acquisition
• Dual 12-bit analog outputs for control and signal generation tasks
• Power supply rails (+5V, –15V, +15V) available at connector for external accessories
• 100-pin D-type rear connector for all analog and digital connections
• Optional conformal coating for environmental protection
– Typical Applications
Laboratory instrumentation, automated test equipment, process monitoring and control, multichannel sensor acquisition, real-time data logging.
– Compatibility & Integration
Drives IBM PC AT and compatible systems under MS-DOS and Windows environments. Supported by 32-bit DriverLINX drivers and integration libraries for ExceLINX, VisualSCOPE, TestPoint, and LabVIEW platforms.
