The DIS875 and DIS975 provide a display, optional isolated DC output voltage or current proportional to a frequency input signal, and optional alarm setpoints. The units include filtering and conditioning to reduce susceptibility to transients and noisy operations.
All controls are accessible by removing a gasketed front access panel.
The display controls are wide-ranging so that it can be calibrated to display engineering units. Decimal point selection is made with a switch, also accessible from the front. Once the display has been adjusted to read the correct engineering units, the alarm setpoints can be adjusted without test equipment and without disturbing the output voltage or current. The wide range input sensitivity allows the DIS to be driven from low level magnetic pickups as well as logic level signals. A choice of three input sensitivities allows the user to trade off sensitivity versus noise rejection.