VMEbus J2 3 U Series 30/31

The VME expansion bus J2 serves three purposes in the VMEbus system:

• The extension from 24-bit to 32-bit addresses and from the 16-bit to the 32-bit data format is implemented via the connections in row B of the connector.
• Rows A and C make 64 pins available to the user. These can be used for I/O applications or, for example, to hold the VSB bus.
• Three VCC and four GND pins increase the max. current consumption of 3 A (4.5 A) to 6 A (9 A) per board with the operating voltage of +5 V (values in () at tu = 25 oC).

Connectors

Completely equipped with socket connectors to DIN 41612, style C, 96 pins, with gold-plated feed-through posts. The feed-through posts of all slots are equipped with shrouds on the wiring side.

Power connections

The +5 V/GND operating voltage is supplied via 6.3 x 0.8 mm Faston quick-connect terminals combined with M4 screw connections. The Faston contacts are located in the upper area of the J2 backplane so that the J1/J2 busses can be supplied via the same cable harness.

The Faston contacts in the center of the backplane can be used either as power or as sense connections.

Termination

The terminating resistors for the termination (330/470 Ω) on both ends are integrated in the backplane.

Dimensions

Contiguous placement of J2 backplanes in the 4 HP slot spacing is possible.