Application: Secure Military Radio Communications
Quatech Products Used: MPAC-100 One Port RS-232 Synchronous PCI Board

Military communications require secure connections and robust error checking to make absolutely certain that data is transferred unintercepted and uncorrupted. This data can be anything from e-mail messages, to reconnaissance photos, to audio or visual transmissions which may in some circumstances be encrypted. Multiband tactical radios are often used to implement these secure , high-speed connections between field personnel and home base systems. Size is not an issue for these systems when installed at a home base on a desktop computer. However, size is of paramount concern in the field.

SyncDrive (Plus) is a frame-level synchronous communication driver implemented by a DLL and a device driver. Applications interface to SyncDrive (Plus) through C callable routines and C data structures. The routines provide services for channel configuration, transmitting a buffer, receiving a buffer, setting and monitoring I/O status. Once a handle is opened to the device driver, the application simply reads and writes frames as it would files, without worrying about buffer management, interrupts, or register handling. SyncDrive (Plus) handles start and end flags, synchronization characters, and CRC information on transmit and receive. The C data structures used are for configuration, transmitting and receiving buffers.

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