The Measurement Computing / IOtech DBK15 is a 16-channel differential universal input card for analog signal acquisition. Each channel configures independently for either current or voltage measurement, supporting 4–20 mA industrial sensors and precision voltage signals up to ±30 VDC. Gain and input range are software-programmable, eliminating the need for external conditioning modules. The card ships with precision 250 Ω resistors for 4–20 mA conversion and 6:1 voltage divider networks, enabling rapid deployment across diverse measurement scenarios without additional component sourcing.
Technical Specifications
• Channels: 16 differential inputs, independently configurable
• Input Signal Types: Current (±20 mA maximum) or voltage (±5 VDC to ±30 VDC full scale)
• Voltage Input Ranges (software-selectable): 0 to +10 VDC, ±5 VDC, ±5 VDC (unattenuated), up to ±30 VDC (with user-installed dividers)
• Current Input Range: ±20 mA maximum; 4–20 mA standard with supplied resistors
• Gain Settings (software-programmable): ×1, ×2
• Gain Accuracy: ±0.05% typical, ±0.25% maximum
• Non-Linearity: 0.002% typical, 0.015% maximum
• Common Mode Rejection Ratio: 80 dB minimum
• Unattenuated Bias Current: 150 pA typical, 0.2 µA maximum @ 25 °C
• Slew Rate: 10 V/µs
• Settling Time: 2 µs to 0.01%
• Maximum Input Voltage (safe): ±35 VDC
• Maximum Common Mode Voltage: 10 V channel-to-channel
• Power Consumption: 485 mW
– Key Features
• Screw terminal signal connections for field wiring
• User-installed resistor sockets for gain and attenuation configuration
• DB37 male connector for system integration
• Factory default: ±5 V input range
• Up to 16 cards per system for 256 total analog input channels
– Typical Applications
Industrial process monitoring, 4–20 mA transmitter acquisition, multi-range voltage measurement, sensor signal conditioning, laboratory data logging.
– Compatibility & Integration
Designed for IOtech LogBook and DaqBoard/2000 Series data acquisition platforms. Modular stacking architecture supports systems up to 256 analog inputs.
