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Operation Theorem •• 15

Operation Theorem

In this chapter, the detail operation theorem of 6208 series cards is

described. Before programming or applying the 6208 series cards to

your applications, please go through this chapter to understand the

features of the functions.

4.1 Voltage Output

The DA converters used on the cPCI/PCI-6208 are Burr-Brown PCM-

56U. The DAC is 16 bit resolution with bi-polar output. The voltage

output range is +/-10V. Therefore, the data register are all 16-bits value

with sign. The digital value range from -32768 (0X8000) to +32767

(0x7FFF) is corresponding to -10 Volt to +10 Volt. Table 3.1 shows the

relation between the digital value and the analog output voltage.

When the applications use smaller voltage range, the cPCI/PCI-6208

can still be applied. For example, if the application voltage range is uni-

polar 0~5V, the user just use digital value range of 0~16384 with 14 bit

voltage resolution.

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ADLINK Technology PCI-6208 Guida Utente Pagina 22