LeCroy optical analog links are suitable for a variety of applications where it is difficult or hazardous to change transmission conditions once a test has begun. Electric power line monitoring, high current testing, EMP testing, weapons simulation experiments, EMC testing, fusion research, high energy physics, and high explosive research are just a few examples of this type of application. The Model 5612 Transmitter and Model 5613 Receiver feature a dual fiber interface which bidirectionally links the transmitter and the receiver. Signal data is transferred from the transmitter to the receiver on one of the optical fibers and control data is transferred from the receiver to the transmitter on the other fiber. This two-fiber system allows for remote verification of calibration, remote control of transmitter input signal range, and remote control of transmitter on/off status.
Using FM signalling techniques, the Model 5612 Transmitter and the Model 5613 Receiver form a link with a wide signal-to-noise ratio, typically 54 dB, in a bandwidth from DC to 1 MHz. The transmitter is battery powered for complete isolation and a battery charging circuit is built in. Spark gap protection devices limit large potential transients and Automatic Gain Control (AGC) avoids changes in sensitivity due to signal strength or transmission loss variations. The transmitter can be controlled either through front-panel switches on the receiver module or by computer via an IEEE 583 (CAMA