The CV-3989/SP Signal Data Converter is used to convert multiple analog inputs from shipboard radar and navigation equipment to a single multiplexed digital output. A single coaxial output supplies digitized trigger signals, azimuth (stabilized and unstabilized), dead reckoning, and ships heading (True and Relative) to a distribution switchboard or directly to a display. Air and/or surface search data can also be processed. Video is supplied directly from the radar to the associated SB-4229A(V)/SP switchboard, or an AN/SPA-25G display.
Triggers: Tm and data bits +5V, Te and Th -5V, transmitted at a .5MHz rate, Th(Horizon); positive pulses, 1-10 uSec duration, +3V to +25V
Azimuth: Unstabilized -115VAC reference, 90V L-L, 60-400Hz synchro.
Azimuth options: Stabilized, (1) 12-bit parallel, TTL logic and (2) VR SIN/COS alpha. Varying DC +18.75V to -18.75V.
True Bearing: 6.3VAC true, 0 Volt relative.
Navigation: (1) Ships heading (CQO), (2) Distance, (3) Speed (Option) - 115VAC reference, 90V line-to-line
synchro, 60-400Hz.Outputs
Five bipolar redundant data streams, three air search, two surface search. Te and Th pulsing from 0 to -5V, Tm and 64 data bits, pulsing from 0V to +5V. The stream is transmitted at a .5MHz rate through 75 ohm coaxial cable.Input Power
115VAC, 60Hz, Single Phase, 30 wattsEnvironmental
Temperature: -25 to 50 Degrees C.
Humidity: Up to 95% relative.
Shock: MIL-S-901.
Vibration: MIL-STD-167
Enclosure: Bulkead mounted cabinet, splashproof.Dimensions
Height: 16.25" (41.2cm)
Width: 12.5" (31.7cm)
Depth: 8.75" (22.2cm)
Weight: 35lbs. (15.9kg)