ADLINK Technology PCI-6208 Guide de l'utilisateur télécharger pdf (Page 30)

Software Library •• 23

5.2.4 _6208_DA

@ Description

This function is used to write data to D/A converters. There are 8 and 16

Digital-to-Analog conversion channels on the cPCI/PCI-6208.and PCI-6216

respectively. The resolution of each channel is 16 bits with sign; i.e. the

digital value range from -32768 (0x8000) to +32767 (0x7FFF). The

following table shows the output data format and the relation between the

digital value and the analog output voltage:

Digital value HEX value Output Voltage

32767 0x7FFF +9.99969V

16384 0x4000 +5.00000V

8192 0x2000 +2.50000V

1 0x0001 0.00031V

0 0x0000 0.00000V

-1 0xFFFF -0.00031V

-8192 0xE000 -2.50000V

-16384 0xC000 -5.00000V

-32767 0x8001 -9.99969V

-32768 0x8000 -10.00000V

@ Syntax

C/C++ (DOS)

U16 _6208_DA (U16 cardNo, U16 chn, I16 DAData)

C/C++ (Windows 95/98)

U16 W_6208_DA (U16 cardNo, U16 chn, I16 DAData)

Visual Basic (Windows 95/98)

W_6208_DA (ByVal cardNo As Integer, ByVal chn As Integer, ByVal

DAData As Integer) As Integer

@ Argument

cardNo: The card number of 6208 series card initialized. The first card (in

the most prior PCI slot) is with cardNo = 0.

Chn: D/A channel number

DAData: D/A converted value

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ADLINK Technology PCI-6208 Guide de l'utilisateur Page 30