Litton Laser Systems 12259 direct digital synthesizer. A Meret Optical ADS-432-430 programmable direct digital synthesizer feeds a 10 dB amplifier to a Mini-Circuits ZFDC-10-1 directional coupler to produce 1 - 400 MHz output at +13 dBM.
Includes Acopian power supplies in a rack-mount cabinet. Operates on 120 vac. "BNC" outputs. Programming input via 50 pin Centronics female on rear panel. Includes synthesizer instructions.