Experts from the Naval Air Warfare Center Aircraft Division at Patuxent River Naval Air Station, Md., announced their intention last week to purchase synchro-to-digital cards, as well as card repair services, from NAI sole-source. The federal part number for the cards is 64SD1-06KSP2-63.
Navy officials say they have little choice other than to procure the synchro-to-digital cards from NAI. This board is the only one available that is interoperable with existing operational software packages of the Northrop Grumman interrogator set AN/UPX-24(V).
This subsystem is the core IFF processor of the AN/UPX-29(V) shipboard interrogator system. The AN/UPX-24(V) identifies aircraft and surface vessels equipped with selective identification feature (SIF) modes 1, 2, 3A, and C, and provides secure identification of cooperative mode 4 targets.
The IFF data from one AN/UPX-24(V) can be synchronized with as many as four individual radars, and provides the operator with synthetic IFF symbology for target recognition and tracking. The system is installed in Ticonderoga-class cruisers, Arleigh Burke-class destroyers, Wasp-class amphibious assault ships, San Antonio-class amphibious transport docks, and Nimitz-class aircraft carriers.
Navy officials are asking NAI to provide 10 synchro-to-digital cards and to repair four others. The value of the order has yet to be negotiated.
Synchros and resolvers are transformer-type voltage and current transducers that convert a shaft or other rotating device's angular position and velocity to a multi-wire AC electrical signal. Both deliver signals proportional to the sine and cosine of the shaft angle. A synchro-to-digital converter switches these signals to a digital output corresponding to the shaft angle and velocity.
NAI offers several kinds of multi-channel programmable, isolated output, synchro and resolver measurement synchro/resolver–to-digital function modules, including VME, OpenVPX, CompactPCI, PMC, and PC/104.
The company's Synchro/Resolver–to-Digital function modules feature background wrap-around self-test capability and most platforms support an optional programmable AC excitation supply.
The NAI model VME 64CS4 single slot multi-function 6U VME board, for example, is designed for applications requiring digital-to-synchro/resolver (D/S) stimulus output, as well as I/O and communication functions.
More information about this procurement is online at https://www.fbo.gov/spg/DON/NAVAIR/N00421/N00421-14-T-0213/listing.html.