Dawn VME VMEXB60D 6U VMEbus Form-Factor Extender Board

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: 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.