The Measurement Computing CIO-DAS1402/16 is an ISA bus data acquisition and control board engineered for precision measurement and automation tasks. It delivers 16-bit analog input resolution across 16 single-ended or 8 differential channels, with programmable input ranges from ±10 V to ±1.25 V (bipolar) and 0 to 10 V to 0 to 1.25 V (unipolar). The board achieves ±0.0015% accuracy with ±1.5 LSB linearity error, supported by a programmable gain amplifier offering gains of 1, 2, 4, and 8. Maximum throughput reaches 100 kHz with a 10 µs conversion time and 512-sample FIFO buffer for burst-mode acquisition.
Technical Specifications
Analog Input
• 16-bit ADC resolution
• 16 single-ended or 8 differential input channels
• Programmable ranges: ±10 V, ±5 V, ±2.5 V, ±1.25 V (bipolar); 0–10 V, 0–5 V, 0–2.5 V, 0–1.25 V (unipolar)
• Accuracy: ±0.0015% of reading ±1.5 LSB
• Differential linearity: ±1.5 LSB max
• Integral linearity: ±1.5 LSB max
• Common-mode range: ±10 V
• CMRR @ 60 Hz: 90 dB min
• Input impedance: 10 MΩ
• Input leakage current: 100 nA @ 25 °C
• Absolute maximum input: ±35 V
• Conversion time: 10 µs
• Maximum throughput: 100 kHz
• Gain drift: ±10 ppm/°C
• Zero drift: ±5 ppm/°C
• Programmable gains: 1, 2, 4, 8
• FIFO buffer: 512 samples
Digital I/O
• 8 lines total (4 outputs, 4 inputs)
• Input levels: Low = 0.8 V max, High = 2.0 V min @ 20 µA
Counters
• Three 16-bit counters
• Two dedicated to A/D pacer
Physical & Environmental
• Weight: 11.2 oz
• Operating temperature: 0 to 50 °C
• Storage temperature: -20 to 70 °C
• Humidity: 0 to 90% non-condensing
• Connector: 37-pin D (analog signals)
• Clock: 1 or 10 MHz XTAL
– Key Features
• Burst-mode acquisition support
• Programmable input gain amplification
• High input impedance and low leakage current
• Overvoltage protection to ±35 V
• ISA bus architecture
– Typical Applications
Laboratory instrumentation, automated test systems, industrial process monitoring, and multichannel data logging requiring high-resolution analog acquisition with digital control.
– Compatibility & Integration
ISA bus interface. Includes InstaCal software and Universal Library for application development on IBM PC platforms.
