Analog Output

The NI USB-6008/6009 has two independent analog output channels that can generate outputs from 0 V to 5 V. All updates of analog output channels are software-timed. GND is the ground-reference signal for the analog output channels.

The following figure shows the circuitry of one analog output channel on the NI USB-6008/6009.

Figure 12. Circuitry of One Analog Output Channel

1378

The main block featured in the NI USB-6008/6009 analog output circuitry is the digital-to-analog converter (DAC), which converts digital codes to analog voltages. There is one DAC for each analog output line.