The Keithley DAS-1702HR / DAS-1702HRNMS is a 16-bit data acquisition board for IBM PC-compatible systems delivering gap-free, continuous acquisition at up to 50 kS/s. Engineered for precision measurement and control, it combines onboard 1K-word FIFO buffering with dual-channel DMA to capture large data volumes without interruption. The channel-gain queue enables high-speed sampling across non-sequential channels with independent gains—critical for multi-range signal monitoring.
## Technical Specifications
• **Resolution:** 16-bit
• **Maximum Sampling Rate:** 50 kS/s single channel; 46 kS/s aggregate (multiple channels)
• **Analog Input Channels:** 8 differential or 16 single-ended (software-selectable)
• **Input Gains (Model 02):** 1, 2, 4, 8
• **Input Range:** ±10 V at unity gain
• **FIFO Buffer:** 1024 locations (16-bit)
• **DMA:** 16-bit transfers; single and dual channel modes
• **Digital I/O:** 4 inputs, 4 outputs (TTL/CMOS compatible)
• **Analog Output (DAS-1702HR-DA):** 2 × 16-bit DAC, -10.0000 V to +9.999695 V
• **DAC Linearity:** ±1 LSB typical / ±2 LSB maximum integral and differential nonlinearity; 16-bit monotonic
• **Operating Temperature:** 0 to 50 °C
• **Storage Temperature:** –20 to +70 °C
• **Humidity:** 0 to 90% non-condensing
## Key Features
• Onboard FIFO and dual-channel DMA eliminate data loss during sustained acquisition
• Channel-gain queue permits out-of-sequence sampling and per-channel gain switching at full speed
• 50-pin D-type rear connector integrates analog and digital I/O
• Register compatibility across DAS-1700 Series ensures software portability without modification
• Powered from standard PC supplies: +5 V and ±12 V
## Typical Applications
Multi-channel sensor monitoring, transducer data logging, automated test systems, real-time signal processing where gap-free acquisition and variable gain switching are mandatory.
## Compatibility & Integration
Windows and DOS operating systems. DriverLINX support (ActiveX and DLL) enables integration with DOS and Windows programming languages. Installation Category I and II per IEC 60664.
