Measurement-computing PCM-DAS16D/12 Manual de usuario descargar pdf (Pagina 5)

1 INTRODUCTION

The PCM-DAS16x/12 is a data acquisition and control board for IBM PC

compatible computers with PCMCIA type 2 slots. The heart of the board is

an analog to digital converter. Analog signals are routed to the A/D via either

an 8:1 differential multiplexor (on the PCM-DAS16D/12) or a 16:1 single

ended multiplexor (on the PCM-DAS16S/12) controlled by a register on the

PCM-DAS16x/12. (These two versions of this board will be referred to as

PCM-DAS16x/12 thoughout this manual except where the differences apply.)

The analog input range is fully programmable in both bipolar and unipolar

ranges. An on board pacer clock and external pacer input as well as software

polling may trigger A/D conversions. Transfers may be via software polling,

interrupt service or REP-INSW. A FIFO buffer provides buffering between

the A/D circuit and the PCMCIA bus. Eight digital I/O lines (8 in or out , or,

4 in 4 out) provide a means of sensing and controlling discrete events.

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Measurement-computing PCM-DAS16D/12 Manual de usuario Pagina 5