Operation Theorem
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25
COS Detection
The following timing is an example of COS operation. All the DI
signals’ level change will be detected and then take an ‘OR’
operation to generate the INT1 or INT2 IRQ request.
If INT1 or INT2 IRQ request generates, the signal will be latched. User
should apply the function “_7396_CLR_IRQ” or “_7348_CLR_IRQ” to
reset its state, after the corresponding ISR is finished,.
4.4
12V and 5V Power Supply
The SCSI-100 connector CN1 pr12V and +5V power supply
(only for PCI-7348) for external devices. To avoid the short circuit or the
overload of the power supply, the
resettable fuses
are added on all
the power supply signals.
The maximum current for 5V power supply is 0.5 A. If the load current
is larger than this limitation, the resistance of the resettable fuse will
increase for the reason of the rising temperature. The rising
resistance will further cause the power supply to reduce the load
current. After the condition of overload or short circuit is removed, the
fuse will return to its normal condition. It is unnecessary to replace the
fuse.
The maximum current of 12V power supply is 0.5A, too. The action of
the fuse is the same as that of +5V power supply.
Содержание NuDAQ DIN-96DI
Страница 1: ...NuDAQ P C I 7 3 9 6 DIN 96DI DIN 96DO 96 CH Digital I O Cards U s e r s G u i d e ...
Страница 2: ......
Страница 16: ...8 Installation 2 3 PCI 7396 Layout Figure 2 1 PCI 7396 Layout ...
Страница 24: ...16 Registers Format BASE 07h x x x x x x x x P1n n port number Set to be 0 for input port 1 for output port ...