DRS’ GA-540 TADIL-A/LINK-11 Serial Data Link Translator (SDLT) provides the interface in a TADIL/Link-11 system between a serial encryption device and a tactical data system processor. The GA-540 serial interface to the encryption device meets the Airborne Tactical Data System (ATDS) interface requirements of MIL-STD-188-203-1A – Appendix D2. All data buffering, timing and ATDS handshaking are performed automatically.
The GA-540 is offered as a 19-inch rack-mountable unit, a 1/4 ATR-Short unit or a 6U-VME card. The rack-mounted and ATR units include a power supply, built-in-test indicator and panel-mounted connectors. The VME card set can be hosted in any VME operating environment.
The ATDS interface conforms to the requirements of the standard serial cryptographic device. Data is transmitted with the appropriate burst of clock pulses in response to each demand pulse from the Data Terminal Set (DTS). The re-circulated data is checked on the board and if an error is detected, an ATDS fault pulse is generated and error status bits are set. The message status summary bits from the DTS are passed through, along with the received data, to the Tactical Data System.