APW has extended its range of CompactPCI backplanes with the introduction of 3U and 6U 'reduced width' models, available in 2, 3, 4, 5 and 6 slot variants. The new versions are primarily intended for rack-mount applications where 1U, 2U and 3U horizontal subracks can house 2 slot, 4 slot and 6 slot backplanes respectively. With 19" rack space at a premium, particularly in telecoms and datacoms applications, increased packaging density will give considerable overall cost savings.
The backplanes themselves are designed to PICMG 2,0 Rev.3.0 and are compliant to Revision 2 of the PICMG 2,1 Hot Swap specification. Both 32-bit or 64-bit versions are available, they have right hand system slot positions and support both 33 MHz and 66 MHz operation. The 4, 5 and 6 slot backplanes have the option of CT/H.110 routing to PICMG 2,5 Revision 1,0, giving the additional frame ground terminals and increased signal/power plane clearances required to operate with 48 V d.c. telecom voltages.
The I/O signalling environment is selectable between 3,3 V and 5 V, power on is via 6,35 mm Fastons and M4 Power Bugs and a 10-way service header is provided for power supply monitoring and other system management functions.
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