MOUNTING

The EDM-200 should be mounted in a position that enables easy viewing of

the bar graph display. Figure 4 illustrates the overall dimensions and mounting

hole locations of the EDM-200.

CONNECTIONS

Depending upon the application, the EDM-200 should be connected according

to the connection drawing shown in Figure 5 or Figure 6. All EDM-200

connections are terminated with #6 screws which have a maximum torque

rating of 9 inch-pounds (1 N•m).

AVR Ripple Amplifier

Since the AVR output consists of pulses, a strong ripple component

consisting of these pulses is present in the field current and makes the

detection of an open diode difficult. To eliminate the AVR ripple, the

AVR voltage at terminal F+ is passed through a filter, a null adjustment,

and the AVR ripple amplifier. The amplifier output is then used by the

input amplifier to cancel out the AVR ripple component in the field current.