Northern Connectors Harting DIN 41 612 Connectors - Manual (Page 95)

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Backward compatibility
The design of female connectors allows mating
of any combinations of the 5 or 3 row versions without
mechanical interference, thus making it possible for
users to upgrade and maintain existing systems at
lower costs. It is also possible to mate 5 row male
connectors with 3 row female connectors.
The feature of backward compatibility allows a gradual
upgrade of existing Eurocard based systems without
the additional cost of a complete system redesign. It
is not necessary to replace conventional 96 pin based
boards as they remain pluggable into the 160 pin
based systems.
Not only VMEbus, but also existing proprietary bus
systems for which 3 row 96 pin connectors are no
longer performance sufficient,
provides the
opportunity to adapt the system economically without
a complete redesign to a new bus architecture.
System description
– five rows – 160 poles
Two additional rows of contacts in the connector offer new system features:
● Additional contacts for I/O and system upgrade
● New voltage supplies for 3.3 V and 48 V system components
● Identifying locations of system components and the bus length. “Plug & Play“
● Improved signal/ground ratio for reliable signal data transfer at rates up to 320 MByte/s
(VMEbus) resp. 1.25 Gb/s (Gigabit Ethernet) or 3.125 Gb/s (serial point-to-point)
● Live Insertion for replacing processor or memory cards without closing down the system
● User defined pins for test and maintenance bus lines