North Atlantic Industries, Inc. (NAI) announces the availability of the AD1, AD2 and AD3 Analog-to-Digital (A/D) function modules. Modules AD1, AD2 and AD3 are 12- channel A/D module(s) with (up to) 24-bit Sigma-Delta A/D converters for each individual channel with maximum programmable expected full-scale range inputs of 10V, 100V, and ±25 mA (current only) respectively. The A/D converters provide simultaneous, programmable sample rates of up to 256 kHz.
Each A/D module provides field programmable input range and gain for each channel. The ability to set lower than expected, full-scale voltage gain ranges assures the use of the full resolution. Each channel includes an anti-aliasing filter with an inherent digital “brick wall” filter and a digital second-order IIR low-pass filter with a programmable breakpoint that enables users to field-adjust the filtering for each channel. All channels have continuous background Built-In-Test (BIT). The modules also include extended A/D FIFO buffering capabilities for greater storage/management of the incoming signal samples (data) for post processing applications. Programmable FIFO buffer thresholds maximize data flow control (in and out of the FIFO). Incremental relative time-stamping between samples is also provided as a programmable option.
“The A/D function modules are part of a group of over 40 unique function modules,” states Lino Massafra, VP of Sales and Marketing. “Our modules can be used with any of our latest generation multifunction I/O and SBC cards and in our Sensor Interface Unit systems to offer our customers the widest array and highest density of I/O in the industry.”