User manual

Page 7-1

Manual MPCI-DA12-16.Dh

Chapter 7: Software

The PCI-DA12-8/16 cards are straightforward to program. The following example is in C, but sample

code is also provided on the CD in Pascal and four Windows languages: C++Builder, Delphi,

VisualBASIC, and Visual C++.

To output an analog value with 12-bit resolution, a corresponding decimal number N between 0 and

4095 is calculated (2

= 4096).

N/4096 = V(out)/V(full scale)

Next the data are written to the selected analog output channel. (See the preceding I/O Address Map.)

In this example, we will assume analog output on channel zero (AO 0).

outport (BASE + 0, N)

For simplicity, it was assumed that the simultaneous-update capability was not used.

Examples of this routine are found on the sample disk along with examples in other languages.