Chapter 4 Operation Theorem; Voltage Output; Voltage Output Range Selection; Da Data Format - NuDAQ PCI-6308 Series User Manual

4
Operation Theorem
In this chapter, the detail operation theorem of PCI-6308V and PCI-
6308A is described. Before programming or applying the PCI-6308
cards to your applications, please go through this chapter to
understand the features of the functions.

4.1 Voltage Output

There are 8 voltage output channels for PCI-6308V and 6308A. For
voltage output operation, you have to understand:
1. How to set the voltage output range.
2. The DA data format.
4.1.1

Voltage Output Range Selection

The DA converters used on the PCI-6308 are Burr-Brown
DAC4814AP. This DAC is 12 bits resolution with bipolar or unipolar
output. The voltage output range is jumper selectable by JP1~JP8.
Please refer to section 2.7 for detail of the jumper setting.
selectable range is +/-10V, 0~+10V and 0V ~ user defined voltage.
The user-defined voltage is input from the DB-37 connector¡¦s pi n # 6
4.1.2

DA data format

The DA data format is 12-bits unsigned value for all channels, that is,
the value is in binary format. The digital value range from 0(0X000) to
+4095(0xFFF) is corresponding to full span of the output range, which
is setting by jumper. Table 4.1 shows the relation between the digital
value and the analog output voltage.
Operation Theorem 17
The