The Curtiss-Wright/VMETRO VBT-325B is a VMEbus analyzer built to capture, decode, and display VMEbus transactions in real time. It enables hardware engineers, software developers, and integration teams to troubleshoot system behavior, verify protocol compliance, and isolate timing and logic faults within VMEbus-based architectures.
## Technical Specifications
**VMEbus Protocol Support**
• VMEbus Revision C.1 compliant
• Captures read, write, broadcast, and block transfer types
• Records Address Modifier (AM) codes for transaction differentiation
• Monitors data transfer widths: 8-bit, 16-bit, 32-bit, 64-bit
• Tracks control and status signals including SYSCLK, BERR, ACFAIL, SYSFAIL
**Data Capture & Triggering**
• High-speed capture buffer for transaction logging
• Configurable triggers based on address, data patterns, control signals, and transaction type
• Complex trigger sequence support for event isolation
• Pre-trigger and post-trigger capture modes
## Key Features
• Real-time transaction display in hexadecimal and symbolic formats
• Protocol-level decoding for immediate bus activity interpretation
• Search and filter functions for rapid transaction location within captured datasets
• Statistical analysis: bus utilization, transfer rates, error tracking
• Data export in multiple formats for offline analysis and reporting
## Typical Applications
• VMEbus system debugging and validation
• Hardware/software integration testing
• Protocol compliance verification
• Real-time fault diagnosis and root-cause analysis
## Compatibility & Integration
Designed for VMEbus Revision C.1 and earlier systems. Interfaces directly with the VMEbus for transaction monitoring and connects to host analysis workstations for data visualization and post-processing.
