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3-18
Installation
KPCI-3160 User’s Manual
Using +5VDC from the computer power supply
CAUTION
Do not connect the +5VDC outputs to an ex5VDC supply.
This may damage the external supply, the board, and the computer.
Do not draw more than 2.0A, total, from the board to power external
circuits, distributed as follows:
•
Do not draw more than 1A, total, at the KPCI-3160 I/O connec-
tor between pin 51 (+5VDC) and pin 100 (digital ground).
OR
at CONN-3160-D1 50-pin connectors J1 and J2 combined,
between pins 49 (+5VDC) and the even-numbered pins (digital
grounds).
•
Do not draw more than 1A, total, at the KPCI-3160 I/O connec-
tor between pin 01 (+5VDC) and pin 50 (digital ground).
OR
at CONN-3160-D1 50-pin connectors J3 and J4 combined,
between pins 49 (+5VDC) and the even-numbered pins (digital
grounds).
Drawing excessive current may damage the KPCI-3160 board and,
potentially, the computer.
The board extends fuse-protected power from the +5VDC computer supply to the I/O connector.
(See
Figure 3-1
). This power is convenient for use in light external circuits, such as pull-up resis-
tors. If you ensure that the conditions in the above
CAUTION
notice are maintained, this power
may also be used to energize external accessories, provided that your computer’s power supply
is capable of delivering the desired current.
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