Texas Instruments BUF08821EVM-USB BUF08821EVM-USB BUF08821EVM-USB 데이터 시트
제품 코드
BUF08821EVM-USB
BUF08821EVM-USB Software Overview
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5.2.7
Load From File Button
The BUF08821EVM-USB software is also able to load data saved from previous evaluations. A saved
register configuration can be loaded into the BUF08821 using the Load From File button, as shown in
register configuration can be loaded into the BUF08821 using the Load From File button, as shown in
. The program remembers where you saved the last register configuration. Simply select the
desired configuration and press Open.
Figure 20. Load From File Button and Window
5.2.8
Changing the DAC/V
COM
Analog Voltage
The voltage of any of the DAC or V
COM
channels can be adjusted in several ways. First, you can change
the voltage by entering the desired voltage directly in the voltage text box. In order to be able to manually
type the voltage into the text box, you must first click on the cell to be edited. Click a second time and the
cell turns from blue to black, and allows the user to type the updated voltage in the cell. The hexadecimal
DAC codes can be entered in the Code column in the same manner.
type the voltage into the text box, you must first click on the cell to be edited. Click a second time and the
cell turns from blue to black, and allows the user to type the updated voltage in the cell. The hexadecimal
DAC codes can be entered in the Code column in the same manner.
Another method of changing the voltage of a DAC or V
COM
channel is through the use of the slider on the
main software window. There is only a single slider that is used for all channels. In order to use the slider
to adjust the voltage of a particular channel, that channel must first be selected. To select a channel, click
on either the channel number, voltage, or code of a particular channel. The entire channel row highlights
in blue to show the user that the channel is selected. Adjusting the slider bar then only updates the
highlighted channel.
to adjust the voltage of a particular channel, that channel must first be selected. To select a channel, click
on either the channel number, voltage, or code of a particular channel. The entire channel row highlights
in blue to show the user that the channel is selected. Adjusting the slider bar then only updates the
highlighted channel.
The final method to change DAC/V
COM
voltages is through the ±1 Code and ±5 Code buttons on the main
software window. These buttons allow for fine and coarse adjustments, respectively, to the highlighted
channel, giving the user the ability to quickly step the channel output up or down as needed without
having to manually enter the changes in the Code column.
channel, giving the user the ability to quickly step the channel output up or down as needed without
having to manually enter the changes in the Code column.
20
BUF08821EVM-USB User Guide and Software Tutorial
SBOU095 – March 2011
© 2011, Texas Instruments Incorporated