Specifications

MAINTENANCE and SERVICE
5.6.2.3 Programmable Input Ranges
A programmable gain amplifier, programmable unipolar/bipolar range, and
programmable 5V/10V full-scale range combine to give the ADIO board a total of 10
different possible analog input ranges. All range settings are controlled in software for
maximum flexibility.
Mode Full-
Scale
Gain Input
Range
Resolution
Unipolar 10V 1 0-10V 0.153mV
Unipolar 5V 1 0-5V 0.076mV
Unipolar 5V 2 0-2.5V 0.038mV
Unipolar 5V 4 0-1.25V 0.019mV
Unipolar 5V 8 0-0.625V 0.0096mV
Bipolar 10V 1 ±10V 0.305mV
Bipolar 5V 1 ±5V 0.153mV
Bipolar 5V 2 ±2.5V 0.076mV
Bipolar 5V 4 ±1.25V 0.038mV
Bipolar 5V 8 ±0.625V 0.019mV
5.6.2.4 Enhanced Trigger and Sampling Control Signals
The ADIO board has an extra A/D trigger and sample control signals in the design.
Seven auxiliary digital I/O lines on the analog I/O connector provide a sample/hold
output signal, A/D trigger in and out lines (to enable synchronization of multiple boards)
and external A/D clocking.
5.6.2.5 Analog Outputs
The ADIO board contains 4 12-bit analog outputs with autocalibration capability. Up to
5mA of output current per channel can be drawn from all channels simultaneously. Both
unipolar and bipolar output ranges are supported with jumper configuration. And on
power up, all outputs are reset to 0V automatically.
Mode
Full-Scale
Output
Range
Resolution
Unipolar 10V 0-10V 2.44mV
Unipolar 5V 0-5V 1.22mV
Bipolar 10V ±10V 4.88mV
Bipolar 5V ±5V 2.44mV
5.6.2.6 FIFO and 16-Bit Bus Interface
An on-board 1024-byte FIFO enables the ADIO board to work with Windows 95 and NT
by dramatically reducing the interrupt overhead. Each interrupt transfers 256 2-byte
samples, or half the buffer, so the interrupt rate is 1/256 the sample rate. FIFO operation
Rosemount Analytical µCEM Continuous Analyzer Transmitter 5-11