National Semiconductor DAC121C085, Руководство пользователя

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10. Configure the digital waveform to be
converted by the DAC as seen in Figure 11 .
Please s ee the WaveVision4 User’s Manual
for detailed instructions. The ability to drive
preset waveforms or custom data is provided.
Figure 11: Waveform Configuration
11. Press the “Start” button to begin driving the
digital waveform to the DAC.
The WaveVision4 Board will continuously send the
waveform out to the DAC over the I
2
C interface
until the “Stop” button is pressed. Please refer to
S ection 4.4 for details on measuring the Analog
Output of the DAC.
The Digital Waveform is plotted in the main
WaveVision window for added convienience. This
waveform may be further analyzed by clicking on
the magnifying glass icon, then clicking and
dragging across a specific area of the plot for
better data inspection. See the WaveVision4
Board User's Guide for details.
If this board is used in conjunction with the
WaveVision4 Data Capture Board and
WaveVision software, a USB cable is needed to
connect WaveVision4 Board to the host computer.
See the WaveVision4 Board User's Guide for
details.
6.0 Evaluation Board Specifications
Board Size: 2.8" x 2.0" (7.2 cm x 5.1 cm)
Power Requirements Min: +2.7V , 6mA Max: +5.5V, 16mA
I
2
C Interface Speed: 100 kHz, 400kHz, or 3.4 MHz
Analog Output
AC Coupled
Output Range: -(V
A
/2) to (V
A
/2)
Impedance: User Selectable: 2K Ω , 200pF, or ∞ .