Omega Engineering DAQ-12 user manual Interrupts, External Interrupt

2.8Interrupts

The DAQ-12 is capable of generating an interrupt from one of four sources:

1.End of conversion signal

2.DMA terminal count

3.Multi-function timer output

4.External interrupt input

The interrupt source is software selected through the DAQ-12 control word register. The interrupt level is selected using the jumpers J10 and J11 as shown in Figure 2-11.

J10

J11

IRQ 14 IRQ 15 IRQ 12 IRQ 11 IRQ 10 IRQ 2 IRQ 3 IRQ 4 IRQ 5 IRQ 6 IRQ 7

Factory default = IRQ 5

Figure 2-11. Jumpers J10 and J11 Configuration

2.8.1External Interrupt

The external interrupt is a TTL compatible input from the D-62 connector. An interrupt request is generated on a high to low transition of this input.

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