The Astronics / EADS / Racal 6065P-4 is a 4-channel serial interface card for VXIbus systems, delivering flexible multi-protocol serial communication with independent channel configuration. Each of the four channels configures independently as RS-232, RS-422, RS-423, or RS-485, supporting programmable data rates from 1.7 Baud to 125k Baud with seamless operation up to 38400 Baud without dead time. The card provides 512kB of allocatable input/output buffer memory and operates under SCPI control for standardized instrument programming.
## Technical Specifications
• **Channels:** 4 independent serial channels
• **Interface Protocols:** RS-232, RS-422, RS-423, RS-485 (selectable per channel)
• **Data Rate:** 1.7 Baud to 125k Baud (programmable); supports continuous operation to 38400 Baud
• **Buffer Memory:** 512kB allocatable to input and output buffers
• **Protocol Configuration:** Software-programmable word length, parity checking, handshaking, and baud rate per channel
• **Non-volatile Storage:** Configuration memory retained across power cycles
• **Form Factor:** C-size VXIbus compatible
## Key Features
• Independent per-channel protocol and baud rate selection eliminates cross-channel constraints
• Software-controlled loopback at the line driver/receiver level for self-test verification
• Simultaneous full-duplex transmit and receive on all four channels
• SCPI compliance enables integration into automated test environments
• Programmable key parameters stored in non-volatile memory
## Typical Applications
VXIbus-based serial data acquisition, multi-instrument control, protocol conversion testing, and embedded system communication validation where diverse serial standards must operate in parallel.
## Compatibility & Integration
Designed for C-size VXIbus message-based systems. SCPI programming language support provides direct integration with standard instrument control frameworks and automated test software.
