DI–718B and DI-718Bx Series Hardware Manual
Accessories
40
DI-8B30/31 Analog Voltage Input Modules, 3Hz Bandwidth
Each DI-8B30 or DI-8B31 module isolates, filters and amplifies a voltage input signal and provides an analog voltage
output.
Signal filtering is accomplished with a three-pole filter optimized for time and frequency response which provides
70dB of normal-mode-rejection at 60Hz. One pole of this filter is on the field side of the isolation barrier for anti-
aliasing, and the other two are on the system side.
A special input circuit on the DI-8B30 and DI-8B31 modules provides protection against accidental connection of
power-line voltages up to 240VAC.
Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is
powered from +5VDC, ±5%.
:
Ordering Information
MODEL
INPUT RANGE
OUTPUT RANGE
DI-8B30-01
-10mV to +10mV
-5V to +5V
DI-8B30-02
-50mV to +50mV
-5V to +5V
DI-8B30-03
-100mV to +100mV
-5V to +5V
DI-8B31-01
-1V to +1V
-5V to +5V
DI-8B31-02
-5V to +5V
-5V to +5V
DI-8B31-03
-10V to +10V
-5V to +5V
DI-8B31-07
-20V to +20V
-5V to +5V
DI-8B31-09
-40V to +40V
-5V to +5V
DI-8B31-12
-60V to +60V
-5V to +5V