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96 Programming the VT1422A for Data Acquisition and Control Chapter 4
-- Reading Running Algorithm Values . . . . . . . . . . . . . . . . . page 134
Reading CVT Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 134
Reading FIFO Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 135
Which FIFO Mode? . . . . . . . . . . . . . . . . . . . . . . . . . . . page 135
Reading Algorithm Variables Directly . . . . . . . . . . . . . page 137
-- Modifying Running Algorithm Variables . . . . . . . . . . . . . page 138
Updating Algorithm Variables and Coefficients . . . . . . page 138
Enabling and Disabling Algorithms . . . . . . . . . . . . . . . page 138
Setting Algorithm Execution Frequency. . . . . . . . . . . . page 139
• Example SCPI Command Sequence. . . . . . . . . . . . . . . . . . . page 139
• Example VXIplug&play Driver Function Sequence . . . . . . page 140
• Using the Status System . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 142
• VT1422A Background Operation. . . . . . . . . . . . . . . . . . . . . page 148
• Updating the Status System and VXIbus Interrupts . . . . . . . page 149
• Creating and Loading Custom EU Conversion Tables . . . . . page 150
• Compensating for System Offsets. . . . . . . . . . . . . . . . . . . . . page 153
• Detecting Open Transducers. . . . . . . . . . . . . . . . . . . . . . . . . page 155
• More On Auto Ranging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 156
• Settling Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 157
Overview of the VT1422A Multifunction DAC Module
This section describes how the VT1422A gathers input data, executes its 'C'
algorithms and sends its output data. Figure 4-1 shows a simplified
functional block diagram.