6211

[stemac]

Using lv 7.1 w/ usb-6211 to control test process.  Would like to use DO's of 6211 to set attenuation level of digital attenuator to make adj's for different product lines.  Are digital outs the easiest way to achieve this and if so, direction to an example would be appreciated.  Thanks.

[Jordan_D]

Hi stemac,

The digital outputs will follow TTL specifications so you will be limited to outputting either 0 or 5 V. In addition, digital I/O on a USB-6211 cannot be performed with hardware timing so you will be required to use software in order to change the digital output values. The 6211 also has two counters which could be used with hardware timing if you are looking to output TTL pulses at a specific frequency. If you would like to output specific voltages, I would recommend using an analog output task. Examples for all of these functions can be found in the LabVIEW Example Finder (Help»Find Examples) under Hardware Input and Output»DAQmx. If you provide me with a bit more information regarding the signal that you are trying to output, I might be able to help you make some of these early design decisions and get you started with an example program.