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PCI-1202/1602/180x Series Card
Multi-Function Boards
User Manual/ Ver. 4.8/ Mar. 2015/ PMH-0014-48/ Page: 96
(1)
The Magic Scan controller is a high performance RISC-like controller. It can scan the analog
input signal in non-sequential order. It also control the PGA to different predefined gain for
each channel.
(2)
The pacer timer generates the trigger signal to A/D converter.
(3)
The A/D conversion data will be placed in the FIFO.
(4)
PC will read the A/D data from FIFO while the data is ready. The FIFO is 1 k samples for
PCI-1800 and 8 k samples for PCI-1802. The PC can will compute and analyze the A/D data
while the A/D conversion is going. Therefore the speed of PC must compatible with the
speed of A/D conversion. The A/D conversion can be 330 k max.in the channel/scan mode.
Therefore the PC must handle 330 k samples per second to avoid overflow. The
Pentium-120 CPU or more powerful CPU is recommended.
Analog
Signal
MUX
PGA
A/D
Converter
FIFO
X86
Pacer Trigger
Timer
Magic Scan
Controller
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