The CM1553-1 is a dual-redundant MIL-STD-1553 interface in a rugged Type III PCMCIA card. It allows a desktop or notebook computer to serve as a bus controller, remote terminal or monitor for testing, simulation and development of MIL-STD-1553 avionics systems.
After the host computer configures and activates it, the CM1553-1 sends and receives 1553 messages autonomously, eliminating host overhead. Both incoming and outgoing message data are buffered in the 64K byte internal memory of the PCMCIA card. The host may update CM1553-1 memory with new data for transmission or read recently received data from memory at any time.
In bus controller mode message scheduling, frame timing, retries, interrupt generation and conditional message processing are all programmable. In remote terminal mode the CM1553-1 buffers message data by subaddress and T/R bit. Messages may be single buffered, list buffered or ping-pong double buffered. Mode codes and subaddresses may be selectively disabled. In monitor mode the PCMCIA card maintains a complete history of all bus activity between any user-specified combination of remote terminals.
The CM1553-1 also offers automatic time tagging, error detection, and a user-configurable interrupt architecture. All data transfers in remote terminal and monitor modes are automatically time-tagged. The CM1553-1 detects Manchester, sync-field, word count, parity, bit count and protocol errors in messages. All interrupts enabled by the user are automatically recorded in a 16-item circular Interrupt Log List.
Driver software is included with the PCMCIA card to simplify configuration and data handling. With this driver software, MIL-STD-1553 applications can be implemented in only a few lines of source code. The driver software supports MS-DOS® and Windows® 95/98/NT/Me/2000 environments. The powerful GUI program, CoPilot 1553 v. 1.6, is available separately or bundled with the CM1553-1. Call Ballard for more information on CoPilot 1553 v. 1.6.