To contact Anritsu, please visit:

From here, you can select the latest sales, select service and support contact information in your country or region, provide online feedback, complete a “Talk to Anritsu” form to have your questions answered, or obtain other services offered by Anritsu.

Updated product information can be found on the Anritsu web site:

Search for the product model number. The latest documentation is on the product page under the Library tab.