Curtiss-Wright / VMETRO VBT-325B VMEbus Analyzer

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.