VME VMIVME-2131, Instruction Manual

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Due to the large output currents possible, each driver pair has a separate pin for
their source voltage and ground. This voltage is independent of the TTL control
voltage driving the output devices. Its maximum value is determined by the output
devices (UDN-2935ZH), which is 35 V. A detailed description of the output drivers is
given in the product specification, Document Number 800-012131-000.
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CAUTION
THE USER SHOULD USE THE CABLE GROUND LINES FOR THE EXTERNAL POWER SUPPLY
RETURNS. THIS IS REQUIRED TO PREVENT EXCESSIVE CURRENT FROM FLOWING INTO
THE VMEbus BACKPLANE. ALSO, THE USER SHOULD REMOVE POWER BEFORE THE
CABLES ARE CONNECTED OR DISCONNECTED (FROM THE BOARD). THIS WILL PREVENT
EXCESSIVE CURRENTS FROM DAMAGING THE P3/P4 CONNECTOR PINS.
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