The antenna attaches to the instrument with a coaxial cable. The antenna and coaxial cable are not supplied with the instrument and are to be obtained separately. The antenna factors are different for each antenna. Refer to the documentation for your antenna. Then select an antenna from the standard list that is available on the instrument. If your antenna is not on the list, then use the Antenna Editor function of Master Software Tools to define a custom antenna and to upload the antenna information into the antenna list on the instrument. You can use Master Software Tools (MST) to update your antenna and coaxial cable lists. For directions about updating these lists, refer to the Master Software Tools documentation on the MST CD‑ROM that was supplied with your Anritsu instrument.