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5.2.1
DMA Level Configuration
Jumper J26 pins labeled 3, 3, 1, and 1 are used to configure DMA acknowledge and DMA request for DMA
channels 1 and 3. Refer to the table and illustrations below.
5.2.2
IRQ Level Configuration
Jumper J26 pins, labeled 15, 12, 11, 10, 9, 7, 6, 5, 4, and 3 are used for IRQ level configuration for data
acquisition IRQ. Jumper the pin for the desired IRQ level; the pin label corresponds to the IRQ level.
The figure below shows an example of setting IRQ level 10.
Neptune User Manual 2.1
Pin Label
DMA Channel/Function
3
Channel 3, DMA Acq
3
Channel 3, DMA Req
1
Channel 1, DMA Acq
1
Channel 1, DMA Req
Default setting: DMA Ack/Req for Channel 3 and Channel 1
Default setting: IRQ 10.
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