conoptics 302RM Manual page 5

OPERATING INSTRUCTIONS:
The Model 302RM amplifier is designed to drive a number of different Conoptics E.O.
modulators. All types of modulators supplied with the system are configured as lumped
capacitors (two terminal devices). The amplifier has a 50/1K ohm, single ended input (J3
SIGNAL INPUT) and a push/pull output (J1 & J2). The amplifier has a forward gain of
approximately 375V/V push pull. Maximum output is 750V p-p. The amplifier is a linear,
high voltage design for use as an optical shutter, phase modulator, or polarization rotator.
It will accept a variety of different input signals and amplify them linearly within the
bandwidth limitations of the amplifier. A variable DC bias voltage is summed into the
output connectors (J1 & J2) to allow the operator to set the quiescent operating point of
the optical modulator. This bias voltage is adjustable via a ten-turn potentiometer on the
front panel. The digital meter on the front panel indicates the true dc differential bias
voltage across the modulator terminals.
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Conoptics Inc. 19 Eagle Rd. Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145
Email: sales@conoptics.com , or visit www.conoptics.com