The Dawn VME VMEXB60D is a 6U VMEbus form-factor extender board engineered to extend VMEbus signals and provide direct access to test points for diagnostic purposes. Built on a .062″ thick MIL-P-13949 multilayer PCB with hybrid stripline/microstrip construction, the board delivers controlled impedance signal paths and low-noise performance. It features 3-row DIN41612 Class II connectors aligned with VMEbus J1 and J2 specifications, enabling seamless integration into existing VMEbus architectures.
## Technical Specifications
• **Model:** VMEXB60D (Model 188)
• **Form Factor:** 6U VMEbus
• **Depth:** 60 mm
• **PCB Thickness:** .062″ (MIL-P-13949)
• **Connectors:** 3-row DIN41612 Class II (J1, J2)
• **Impedance Control:** Balanced, controlled impedance traces throughout
• **PCB Design:** High-performance multilayer hybrid stripline/microstrip
• **Installation:** Quality extender guides with ejectors
## Key Features
• Depth adaptation allows smaller boards to install in deeper card slots while maintaining correct front panel alignment
• Optional isolated A&C row pins available in P2 connector
• Dual-sided DIP switch connectors support logic analyzer attachment and terminator module installation
• Clean power and ground distribution per VMEbus specifications
• Low-noise design with controlled impedance construction ensures signal integrity across extended signal paths
## Typical Applications
The VMEXB60D accommodates mixed-depth VME installations, enabling 160 mm or 220 mm boards to function in systems designed for deeper 340 mm card cages. Ideal for in-system testing, debugging, and signal monitoring where direct probe access is required without system reconfiguration.
## Compatibility & Integration
Fully compatible with VMEbus systems using standard DIN41612 Class II connectors. Designed for use with 160 mm and 220 mm VME card cage applications.
